Constipation, Diarrhea, and Hemorrhoids

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is a common misconception regarding bowel movements in the Western world?

  • Infrequent bowel movements are always a sign of serious illness.
  • Bowel movements should occur at least twice a day.
  • Any deviation from a daily bowel movement indicates constipation. (correct)
  • Bowel movements are not related to dietary habits.

Constipation affects primarily older adults, with a prevalence rate exceeding 50% in individuals over 60 years old.

False (B)

According to the ROME IV criteria, what term is used to describe constipation that does not stem from drug use, anatomical issues, or physiological causes?

functional constipation

Based on the Bristol Stool Chart, stool types 1 and 2 indicate ______.

<p>constipation</p> Signup and view all the answers

Match the following tests with their primary purpose in evaluating constipation:

<p>Anorectal manometry = Measures resting pressure Scintigraphy = Assesses colonic transit time Defecography = Assesses anorectal angle</p> Signup and view all the answers

During the assessment of a patient with constipation, which of the following would be considered a 'red flag' or alarm feature that warrants further investigation?

<p>Family history of colon cancer (B)</p> Signup and view all the answers

Optimizing the management of underlying diseases is not a recommended strategy to lessen or resolve constipation.

<p>False (B)</p> Signup and view all the answers

Why is it important to balance the risk of constipation against the benefit of the medication when assessing medications as a cause of constipation?

<p>determine if the medication should be dose reduced or discontinued</p> Signup and view all the answers

According to one of the slide images, constipation is primarily the result of decreased ______ motility.

<p>colonic</p> Signup and view all the answers

Match the following goals to their corresponding actions in managing constipation:

<p>Resolve current symptoms = Return stool frequency Avoid complications of constipation = Address hemorrhoids Prevent adverse drug reactions = Minimize laxative dependence</p> Signup and view all the answers

Which of the following is a common complication of constipation?

<p>Hemorrhoids (C)</p> Signup and view all the answers

Regular physical activity definitively improves bowel function and resolves constipation without other interventions since this has been proven.

<p>False (B)</p> Signup and view all the answers

What dietary component is preferred over supplements for increasing intake to manage constipation & why?

<p>fiber</p> Signup and view all the answers

Using a ______ provides more optimal position for defecation.

<p>squatty potty</p> Signup and view all the answers

In the context of addressing constipation, match each agent with its corresponding category:

<p>Docusate Sodium/Calcium = Stool Softener Psyllium = Bulk-Forming Agent PEG 3350 = Osmotic Agent Bisacodyl = Stimulant</p> Signup and view all the answers

What is the primary mechanism of action of emollient/stool softeners?

<p>Decreasing surface tension to allow fluid penetration into stool (D)</p> Signup and view all the answers

Emollients (stool softeners) have strong clinical evidence supporting their efficacy in treating constipation and are highly recommended as first-line therapy.

<p>False (B)</p> Signup and view all the answers

What is a key instruction regarding fluid intake that should be given to patients using bulk-forming agents?

<p>take bulk forming agents with at least 250mL of fluid</p> Signup and view all the answers

Osmotic laxatives create an osmotic gradient to draw fluid into and retain in the ______ lumen, primarily to help motility.

<p>intestinal</p> Signup and view all the answers

Match the following common side effect to its corresponding treatment that is used for constipation:

<p>Glycerin Suppository = Stimulates defecation reflex Bulk Forming Agents = Flatulence and Bloating Stimulant Laxatives = Electrolyte Imbalances</p> Signup and view all the answers

What type of solution is preferred for bowel cleansing prior to inspection or fecal impaction?

<p>Enemas (B)</p> Signup and view all the answers

In managing acute constipation one should expect a BM to occur by day 7 from the date of assessment.

<p>False (B)</p> Signup and view all the answers

What should be returned when there is successfull management of chronic constipation?

<p>regular bowel movements</p> Signup and view all the answers

Diarrhea is believed to be ______-reported, and its complications can include dehydration & hypotension.

<p>under</p> Signup and view all the answers

Match the following durations with their corresponding type of diarrhea:

<p>Less than 14 days = Acute Greater than 14 days = Persistent Greater than 4 weeks = Chronic</p> Signup and view all the answers

When talking about diarrhea, how would you classify someone who has been experiencing three loose or liquid stools per 24 hours?

<p>It is diarrhea (A)</p> Signup and view all the answers

Once someone is dehydrated, continue giving them water until they feel better.

<p>False (B)</p> Signup and view all the answers

What electrolyte is used to stimulate absorption?

<p>sodium</p> Signup and view all the answers

The combination of sodium and ______ is the basis for hydration with diarrhea.

<p>glucose</p> Signup and view all the answers

Choose the product classification that would be considered when addressing a patient with diarrhea.

<p>Hydrophilic Bulking Agents = Increase Stool Volume Antimotility Agents = Decrease Transit Time Antibiotics = Address Bacterial Pathogens</p> Signup and view all the answers

What is a key consideration regarding esophageal obstruction when recommending treatment for those with non-specific dirrhea?

<p>Ensure patient takes with sufficient liquid (C)</p> Signup and view all the answers

Antisecretory/Adsorbent Agents are safe for children.

<p>False (B)</p> Signup and view all the answers

What is a common negative symptom of antidiarrheal treatment loperamide that patients will need to pay attention to?

<p>abdominal cramps</p> Signup and view all the answers

Hemorrhoids consist of connective tissue, an arteriovenous ______ and suspensory smooth muscle.

<p>plexus</p> Signup and view all the answers

Match the following functions of hemorrhoids with their purpose

<p>Continence = 15-20% of the resting pressure Protect Sphincters = During defeacation Completes shutdown = Opening in anal cavity</p> Signup and view all the answers

What group typically declines in function?

<p>Elderly (A)</p> Signup and view all the answers

Diarrhea a contributing factor to hemorrhoids.

<p>True (A)</p> Signup and view all the answers

When will a patient need to consult with a expert about their hemorrhoids?

<p>they do not react well to medication</p> Signup and view all the answers

Warm sits baths cause ______ via relaxation to ease pain.

<p>vasodilation</p> Signup and view all the answers

Choose the correct ingredient and result of those whom are impacted by hemorrhoids:

<p>Vasoconstrictors = Systemic Adr Protectants = Little evidence Yeast Deriviatives = Broken Skin</p> Signup and view all the answers

In the western world, it is a misconception that a daily bowel movement is necessary and that anything less indicates constipation.

<p>True (A)</p> Signup and view all the answers

Which of the following is considered a risk factor for constipation?

<p>Sedentary Lifestyle (A)</p> Signup and view all the answers

According to the slide, the first step in managing constipation involves establishing what?

<p>That the patient is suffering from constipation</p> Signup and view all the answers

Match the Bristol Stool Chart types with their corresponding bowel conditions.

<p>Types 1 and 2 = Indicate Constipation Types 3 and 4 = Ideal Stool Types 6 and 7 = Indicate Diarrhea/Urgency</p> Signup and view all the answers

According to the ROME IV criteria, which symptom is considered in the diagnosis of chronic functional constipation?

<p>Less than 3 spontaneous bowel movements per week (C)</p> Signup and view all the answers

Which of the following tests is used to assess colonic transit or evacuation? (Select all that apply)

<p>Scintigraphy (A)</p> Signup and view all the answers

Undergoing tests for constipation is necessary, regardless of the presence of alarm symptoms for every patient.

<p>False (B)</p> Signup and view all the answers

Which of the following is considered a red flag or alarm feature that requires additional investigation in individuals with constipation?

<p>Family history of colon cancer (A)</p> Signup and view all the answers

Which medical condition is associated with constipation?

<p>Hypothyroidism (B)</p> Signup and view all the answers

If possible, one should lower the ______ or discontinue medications, or switch to another agent with a lower incidence of constipation.

<p>dose</p> Signup and view all the answers

Name a medication that may cause constipation.

<p>All of the above (D)</p> Signup and view all the answers

Which of the following is a goal of therapy for constipation?

<p>To resolve current symptoms (D)</p> Signup and view all the answers

Which condition can be a complication of constipation?

<p>All of the above (D)</p> Signup and view all the answers

Match each dietary recommendation to the age group used.

<p>3-7 years = ≥10g 8-14 years = ≥15g Adults = 25-48g</p> Signup and view all the answers

Lifestyle changes have strong evidence that they resolve constipation and therefore are always a good idea.

<p>False (B)</p> Signup and view all the answers

What are some examples of stool softeners in the slides? (Select all that apply)

<p>Docusate sodium/calcium (A)</p> Signup and view all the answers

When are stool softeners often prescribed?

<p>Post-surgery to minimize straining (C)</p> Signup and view all the answers

What is the main purpose of using bulk-forming agents like psyllium for treating constipation?

<p>To increase fecal volume and soften stool (C)</p> Signup and view all the answers

Which of the following is a primary concern when using osmotic laxatives?

<p>Electrolyte imbalance (A)</p> Signup and view all the answers

Define a major safety concern when using mineral oil as a lubricant.

<p>Lipid pneumonia</p> Signup and view all the answers

What is the main action of stimulant laxatives in relieving constipation?

<p>Increasing colonic motility by stimulating the intestinal mucosa (C)</p> Signup and view all the answers

What are the main uses of the enemas?

<p>Bowel cleansing prior to inspection or fecal impaction (D)</p> Signup and view all the answers

When monitoring constipation the monitoring should reflect the ______.

<p>goals of therapy</p> Signup and view all the answers

Daily logs and remembering what a patient is experiencing are equally valid when observing constipation.

<p>False (B)</p> Signup and view all the answers

What is the most severe complication of diarrhea?

<p>Dehydration (B)</p> Signup and view all the answers

When diarrhea is defined how often is it defined by? (Select all that apply)

<p>All of the above (D)</p> Signup and view all the answers

According to the slide, which of the following is a sign that a person should take more action? (Select all that apply)

<p>More Mucus (A), Severe dehydration (B), Recent use of broad spectrum antibiotics (C), Vomiting for &gt; 4 hours (D)</p> Signup and view all the answers

What organic toxin is know to cause diarrhea?

<p>All of the above (E)</p> Signup and view all the answers

The management of potential diseases needs to be ______ so one can lessen the diarrhea.

<p>optimized</p> Signup and view all the answers

What is the cornerstone of therapy for diarrhea?

<p>Oral Rehydration Therapy (A)</p> Signup and view all the answers

Identify the part of the body that is unique about hemorrhoids.

<p>Anus (D)</p> Signup and view all the answers

Why are pharmacists NOT performing a physical assessment when diagnosing hemorrhoids based on these slides?

<p>Can be diagnosed by other indications (A)</p> Signup and view all the answers

When should a possible issue with Hemorrhoids be referred to a specialist? (Select all that apply)

<blockquote> <p>50 with new onselt symptoms (A), Pregnant with severe symptoms (B), Symptoms that are present for over &gt; 7 days (C), &lt; 12 years of age (D)</p> </blockquote> Signup and view all the answers

All hemorrhoids are treated equally and thus should be cured.

<p>False (B)</p> Signup and view all the answers

Flashcards

What is Constipation?

A condition marked by infrequent bowel movements or difficulty passing stools.

What is the Bristol Stool Chart?

A tool to classify the form of human feces into seven types.

What are the ROME IV Criteria?

Diagnostic criteria for functional gastrointestinal disorders, including chronic functional constipation.

What is Diarrhea?

Diarrhea is unusually frequent excretion of watery stools, often with loss of electrolytes.

Signup and view all the flashcards

What are Hemorrhoids?

A condition where veins in the anus and rectum become swollen, causing discomfort and bleeding.

Signup and view all the flashcards

Nonpharmacologic Treatments of hemorroids

Clean with soap and water after bowel movements, use astringents or antiseptic towelettes.

Signup and view all the flashcards

What is Hemorrhoidal Plexus?

Connective tissue, an arteriovenous plexus that contributes to continence.

Signup and view all the flashcards

What is Step 1 in managing constipation?

Establish the patient is suffering from constipation, diarrhea or hemorrhoids.

Signup and view all the flashcards

What is Step 4 in managing constipation?

Nonpharmacologic options include lifestyle changes like diet and exercise.

Signup and view all the flashcards

Bulk-Forming Agents

First-line treatment after lifestyle changes to improve stool frequency and straining.

Signup and view all the flashcards

Oral Rehydration Therapy

Can treat and prevent the majority of diarrhea related complications and is life saving.

Signup and view all the flashcards

What is step 4 in managing diarrhea?

In this step, nonpharmacologic options are often recommended to stop diarrhea.

Signup and view all the flashcards

Examples of medications that cause constipation?

Analgesics, antihistamines, and cation agents

Signup and view all the flashcards

Study Notes

  • Introduction to constipation, diarrhea, and hemorrhoids.

Disclaimer

  • The lecture notes were prepared for PHAR 1052 in the 2024-2025 academic year. The notes are complete and accurate as possible based on available resources at the time of preparation.
  • Lecture slides alone may give an incomplete picture of the presenter's intended message. They are to be used with Ms. Larose's verbal lecture to understand the complete intended message.
  • The notes are intended to supplement learning from the PBL case, and students should review content and build on their knowledge from anatomy and physiology courses.

Learning Objectives

  • By the end of the lecture, the student should be able to
  • Describe the pathophysiology, etiology, epidemiology, classification, and the diagnosis of constipation, diarrhea, and hemorrhoids.
  • List known causes for secondary constipation and diarrhea and suggest reasoned management strategies for when they are significantly clinical.
  • List red flags to refer patients who have constipation, diarrhea or hemorrhoids.
  • List goals of therapy for constipation, diarrhea, and hemorrhoids.
  • State the pharmacologic class, mechanism of action, efficacy and most common and serious adverse effects of pharmacologic agents used to treat constipation, diarrhea, and hemorrhoids.
  • Recommend pharmacologic and nonpharmacologic alternatives for managing constipation, diarrhea, and hemorrhoids based on patient-specific factors and tolerability.
  • Describe an approach to managing constipation, diarrhea, and hemorrhoids.
  • Have increased comfort talking to patients about the "taboo topic of poo."

Pharmacist Prescribing (for Gastrointestinal Conditions)

  • In British Columbia (BC), Alberta (AB), Manitoba (MB), Ontario (ON), New Brunswick (NB), Nova Scotia (NS), Prince Edward Island (PEI), Newfoundland and Labrador (NL), and Yukon (YT), pharmacists can prescribe for non-infectious diarrhea, dyspepsia (indigestion), and gastroesophageal reflux disease (heartburn).
  • Pharmacists in British Columbia (BC), Alberta (AB), Manitoba (MB), Ontario (ON), New Brunswick (NB), Nova Scotia (NS), Prince Edward Island (PEI), Newfoundland and Labrador (NL), Yukon (YT), and Nunavut (NU) can prescribe medication for hemorrhoids.
  • Threadworms and pinworms can be treated by pharmacists in only British Columbia. Vomiting/Nausea are not allowed pharmaceutical intervention.

Constipation Misconceptions

  • There is a pervasive misconception in the Western world that you must have a DAILY bowel movement; anything less means constipation.
  • The average number of bowel movements for adults and children (≥ 3 years) in the Western world varies from 3 daily to 1 every 3 days!

Constipation

  • Constipation affects approximately 15% of adults and 33% of those over 60 years of age.
  • Constipation cases increase with age.
  • It is more common in black patients, those of lower socio-economic status, and in women.
  • Other risk factors for chronic or acute constipation include:
  • Living in rural, northern or mountainous areas in North America.
  • Fewer years of formal education.
  • Low caloric, fiber, or fluid intake.
  • Greater number of medications used.
  • Physical and/or sexual abuse.
  • Sedentary lifestyle.
  • Nursing home residence.
  • Traveling.
  • Toilet training.
  • Ignoring the urge to defecate.
  • Inverse association: smoking, alcohol.

Approach to Managing Constipation

  • Step 1: Establish that the patient is suffering from constipation.
  • Step 2: Rule out alarm features.
  • Step 3: Identify causes.
  • Step 4: Recommend non-pharmacologic options (+ monitor).
  • Step 5: Initiate laxative therapy (+ monitor).

Step 1: Establish the Patient Suffering From Constipation

  • Use definitions and tools to help diagnose constipation, such as:
  • Definition of constipation.
  • Bristol Stool Chart.
  • ROME IV Criteria.
  • It is important to understand what the patient means by "constipation," and what are their predominant symptoms when taking a history.
  • Patients with impaired cognition or communication may present with nonspecific symptoms like agitation, anorexia, or decline in function, which puts them at a particular risk of fecal impaction, which is the inability to pass a hard collection of stool.

What is Constipation?

  • Constipation is a symptom-based disorder, and the diagnosis relies on subjective criteria.
  • Physicians often define constipation as fewer than 3 bowel movements per week.
  • Patients have a broader set of symptoms, including:
  • Hard stools.
  • A feeling of incomplete evacuation.
  • Abdominal discomfort.
  • Bloating and distention.
  • Other symptoms like excessive straining.
  • Sense of anorectal blockage during defecation or needing help to defecate manually.

Bristol Stool Chart

  • Type 1: Separate hard lumps, like nuts (hard to pass), indicates constipation.
  • Type 2: Sausage-shaped but lumpy indicates constipation.
  • Type 3: Like a sausage, but with cracks on the surface is considered an ideal stool.
  • Type 4: Like a sausage or snake, smooth and soft is considered an ideal stool.
  • Type 5: Soft blobs with clear-cut edges (passed easily), indicates diarrhea/urgency.
  • Type 6: Mushy consistency with ragged edges indicates diarrhea/urgency.
  • Type 7: Watery with no solid pieces, entirely liquid.

Rome IV Chronic Functional Constipation

  • Chronic constipation that does NOT have drug, anatomic, or physiologic causes is termed functional constipation. Functional constipation is defined by the ROME IV criteria.
  • Symptom onset must occur for a minimum of 6 months.
  • It can be reviewed by keeping a bowel log by reviewing the results from the past 3 months.
  • Presence of ≥2 of the following:
  • Straining during > ¼ of defecations.
  • Lumpy or hard stools (Bristol Stool Chart 1–2) > ¼ of defecations.
  • Sensation of incomplete evacuation > ¼ of defecations.
  • Sensation of anorectal obstruction/blockage > ¼ of defecations.
  • Manual maneuvers to facilitate > > ¼ of defecations (e.g., digital evacuation, support of the pelvic floor).
  • < 3 spontaneous bowel movements per week.
  • Loose stools are rarely present (without the use of laxatives).
  • Insufficient criteria for Irritable Bowel Syndrome:
  • Presence of abdominal pain associated with defecation OR changes in stool frequency or form/appearance.

Constipation – Tests?

  • Anorectal manometry measures physiologic parameters like resting pressure, squeeze pressure, rectoanal inhibitory reflex (absent in Hirschsprung disease), sensation, and in some labs, rectal compliance.
  • Balloon expulsion testing measures the ability to evacuate a water-filled balloon; patients with pelvic floor dysfunction may need more time to expel the balloon or may not expel the balloon all.
  • Scintigraphy uses radiolabeled material to assess colonic transit or evacuation but doesn't offer the ability to view anatomic defects. Functional magnetic resonance imaging uses magnetic resonance to assess pelvic floor anatomy and physiology; most offer this test in a supine position but it may offer a better assessment of bone landmarks and making measurements.
  • Defecography involves barium paste placed into the rectum to assess the anorectal angle at rest and with defecation. It may detect pelvic floor dysfunction, including structural issues (rectocele, enterocele, perineal descent) that can affect expulsion.
  • Colonic marker studies involve radiopaque markers that are swallowed to note position over time, allowing for estimates of colonic motility patterns.
  • Wireless pH-pressure capsule measures motor activity in the colon but cannot assess propagation.
  • Colonic manometry and barostat testing are mainly used in specialized centers, and are largely research tools with use in clinical practice not well-established.
  • Electromyelography is used in treatment using biofeedback for dyssynergic defecation but it may be used as a diagnostic tool to assess muscle response to a defecatory effort.
  • Tests are only reserved for patients:
  • With suspected pelvic floor dysfunction.
  • Who do not respond to therapy.
  • The order is to further characterize the underlying pathophysiology and help inform therapy.

Step 2: Conduct an Assessment & Rule out Alarm Features

  • Individuals with alarm features require additional investigations.
  • Alarm features may indicate another condition.
  • Red flags/alarm features include:
  • Family history of colon cancer.
  • Age ≥ 50 years (new onset).
  • Hematochezia or melena.
  • Anemia.
  • Unintended weight loss.
  • Palpable rectal or abdominal mass.
  • Reduction in stool caliber.
  • Fever or signs of infection.
  • Recent abdominal surgery.
  • Persistent abdominal pain.
  • Vomiting.
  • Unremitting nocturnal symptoms.
  • Constipation for >2 weeks (or no BM for >7 days) despite the use of laxatives.
  • Diarrhea alternating with constipation (could signify IBS).
  • Severe pain upon defecation.
  • Moderate to extreme thirst.
  • Chronic illness assoc. w/ constipation.
  • Eating disorders (e.g., bulimia nervosa).
  • Age <1 month of age (consider if <2 years).

Step 3: Identify the Causes of Constipation

  • Several diseases and conditions can cause or worsen constipation.
  • Optimize the management of the noted diseases if possible, in an effort to lessen or resolve the constipation.
  • Diseases and conditions that can cause constipation include (but are not limited to):
  • Cancer/Cancer-related: colorectal cancer, dehydration, intestinal radiation, tumor compression of the large intestine.
  • Endocrine: hormonal changes, hypothyroidism, diabetes, hyperparathyroidism.
  • GI disorders: diverticulosis, Hirschsprung's disease, irritable bowel syndrome, megacolon, pelvic floor dysfunction, rectal prolapse.
  • Metabolic: hypercalcemia, hypocalcemia, hypokalemia, hypomagnesemia, hypopituitarism, pan-hypopituitarism, uremia.
  • Neurologic: autonomic neuropathy, dementia, multiple sclerosis, muscular dystrophies, pain secondary to anal fissures or hemorrhoids, Parkinson's disease, spinal cord lesions, stroke.
  • Psychological: anxiety, depression, eating disorders.
  • Activity levels: decreased mobility or activity, e.g. due to pain.
  • Other: older age, chronic kidney disease, systemic sclerosis, sexual abuse, lack of privacy or time.

Step 3: Identify Causes such as Medications, Supplements etc.

  • Balance the risk of constipation vs. the benefit of the medication(s).
  • If possible, decrease the dose, discontinue the medication, or switch to another agent(with a lower incidence of constipation).
  • Examples of medications that can cause constipation (the list is not exhaustive):
  • Analgesics: NSAIDs and opioids.
  • Anticholinergics: antipsychotics, benztropine, oxybutynin, and others.
  • Antiparkinson: amantadine, bromocriptine, and pramipexole.
  • Anticonvulsants: gabapentin, phenytoin, and pregabalin.
  • Antidepressants: tricyclic antidepressants (e.g. amitriptyline), and paroxetine.
  • Antidiarrheals: diphenoxylate and loperamide.
  • Antiemetics: dimenhydrinate, ondansetron, prochlorperazine, promethazine, and scopolamine.
  • Antihistamines: diphenhydramine and hydroxyzine.
  • Antihypertensives: a-adrenergic agonists, B-blockers, and calcium channel blockers, diuretics.
  • Antispasmodics: dicyclomine.
  • Cation agents: aluminum, bismuth, barium, calcium, and iron.
  • Resins: cholestyramine and sodium polystyrene sulfonate.

Medications and Conditions Associated with Chronic Constipation

  • Medications associated with chronic constipation include 5-HT3 receptor antagonists such as Ondansetron, anticholinergics, antidepressants, anti-parkinson agents, anti-diarrheal agents, anti-epileptics, antihistamines, anti-hypertensives, and anti-nauseates.
  • Other constipation causing pharmaceutical agents can be calcium, iron, resins, NSAIDs, and opioids.
  • Conditions associated with chronic constipation include anatomic obstructions, cancer, chemotherapy-induced dehydration, hormonal changes, hypercalcemia, GI motor disorders, Hirschsprung disease, hyper/hypocalcemia etc.
  • Constipation is primarily the result of decreased colonic motility. Any condition, intervention, activity, or exposure that impairs normal contraction rhythms or slows GI transit time can cause constipation through excessive water absorption.

Therapy Goals for Constipation

  • Identify and correct secondary causes of constipation (when possible).
  • Resolve current symptoms.
  • Return the frequency of stool to the patient's previous normal or a minimum of ≥3 defecations per week.
  • Eliminate symptoms of straining, incomplete emptying, bloating, pain, and obstruction.
  • Improve QoL.
  • Avoid complications of constipation (i.e., hemorrhoids, anal fissure, rectal prolapse, fecal impaction, and incontinence).
  • Prevent adverse drug reactions (including laxative dependence).
  • Prevent the recurrence of constipation and minimizing the cost of management.
  • What is a reasonable parameter for this goal?
  • Is there a reasonable time frame?
  • Is there a goal specific to the patient?

Complications of Constipation

  • Abdominal discomfort or cramps.
  • Poor quality of life.
  • Hemorrhoids.
  • Anal fissures.
  • Damage to the pelvic floor.
  • Fecal incontinence.
  • Urinary retention.
  • Bowel perforation.
  • Rectal prolapse.
  • Volvulus.
  • Anal fistula.

Step 4: Recommend Non-Pharmacologic Options.

  • Consider where these options are safe and appropriate for the patient.
  • There is limited evidence that lifestyle changes resolve constipation BUT lifestyle changes are still considered the 1st choice of treatment.
  • Consider fitness/physical activity:
  • Encourage maintaining a normal level of physical activity (+ will ↑ QoL in seniors).
  • There is no evidence that fitness alone improves bowel function.
  • Consider fluid intake:
  • It is a Modern Day Myth to drink at least 8 glasses/2 liters of water daily.
  • Provide little guidance on how much to drink – consider hydration status, comorbidities (ex OAB, CHF, RF).
  • Consider fiber intake (dietary):
  • Dietary intake is preferred over supplements (avoid in children).
  • Provide a target intake of 3-7 years: ≥10g, 8-14 years: ≥15g, and adults: 25-48g.
  • Consider a daily regimented bowel routine.
  • In children and adolescents: Overconsume dairy and underconsume fiber in diet.
  • Encourage trying to have a bowel movement at the same time each day (e.g., each morning).
  • If you have the urge, go; waiting will cause problems and take the time to pass the entire stool.

Defecation Posture

  • Squatting is overall preferable to sitting during bowel movements.

Step 5: Initiate/Alter Laxative Therapy + Monitor

  • Assess where the therapy is safe and appropriate for the patient.

  • There are no studies assessing a step-wise approach for the management of constipation.

  • Guidelines, clinical practice, and patient-specific factors will inform the first choice of laxative

  • Options include:

  • Stool Softeners (docusate sodium/calcium).

  • Bulk-forming Agents (e.g. Psyllium, inulin, calcium polycarbophil).

  • Lubricants (e.g. Mineral oil).

  • Osmotic Agents (e.g. PEG 3350, Lactulose, sorbitol, glycerin, and magnesium hydroxide).

  • Stimulants (e.g. Bisacodyl and sennosides).

  • Other Guanylate cyclase C agonist (Linaclotide, Plecanatide) and Serotonin 5-HT4 Receptor Agonists (Prucalopride) to be discussed in the IBS lecture.

Emollients/Stool Softeners

  • They contain docusate sodium/calcium.
  • The alleged mechanism is that it decreases stool surface tension and increases fluid penetration into the stool = soft stool.

Emollients/Stool Softeners Efficacy and Use

  • Insufficient evidence supports use; it is unlikely to be effective, but also unlikely to cause harm.
  • The alleged onset is 12-72 hours.
  • Comes in capsules, drops, syrup and can be dosed once or twice daily.
  • Is often prescribed post-surgery to minimize straining.
  • Safety is well-tolerated. but can cause mild nausea and Gl Cramps.

Bulk Forming Agents Mechanism of Action

In the the colon:

  • Gas formation (+ osmoreceptors).
  • Increased osmotic load.
  • Fecal water retention.
  • This overall increases fecal volume and softens stool plus increases wall stress (*mechanoreceptors) Available options are Psyllium, inulin, and calcium polycarbophil.

Bulk-Forming Agents Efficacy and Use

  • Generally recommended as a 1st line after lifestyle changes.
  • Efficacy: Improves stool frequency and is beneficial for straining, incomplete evacuation and for normal transit constipation, the efficacy is similar to lactulose and is better than dietary fibre.
  • Onset of action: 12 to 72 hours.
  • Dosing: Typically 1-3 times daily, taken orally with ≥250mL of water/juice to prevent fecal impaction and esophageal obstruction.
  • ADR: flatulence and bloating (titrate slowly), fecal impaction.
  • Precautions/CI: AVOID if fluid restriction, dehydration, dysphagia, and esophageal strictures.
  • Drug Interactions: suggests spacing from other medications by 2 hours.

Osmotic Laxatives Mechanism and Available Options

  • Mechanism
  • poorly absorbed ions/molecules create an osmotic gradient to draw fluid into and retain in the intestinal thus increasing motility.
  • Available options: PEG 3350, Lactulose, magnesium hydroxide/sulfate/citrate, and sodium phosphate.

Osmotic Laxatives Efficacy and Use

  • Efficacy: beneficial in individuals whose primary symptom is infrequent bowel movements and will also improve stool form and consistency.
  • Onset: ~1-3 days (varies between agents).
  • Adverse Drug Reactions: Well tolerated, but can cause diarrhea, flatulence, nausea, and fluid loss.
  • Precautions/CI: pre-existing electrolyte imbalance, cardiac disease, and renal impairment.
  • General Comparison: PEG > Lactulose in efficacy, palatability, tolerability; Lactulose >PEG in the speed of onset.
  • additional MOA of glycerin is due to stimulating the defecation reflex.

Additional note on Lubricants ie: Mineral Oil

  • Mechanism of action: lubricates the gastrointestinal tract to aid stool passage & slows the reabsorption of water.
  • There are many safety concerns
  • Risk of aspiration = lipid pneumonia (esp. in infants and bedridden or dysphagic patients).
  • Impedes vitamin absorption.
  • Is is no longer typically recommended and Safer and more effective alternatives are available.

Stimulant Laxatives Mechanism of Action

  • Available Agents: Bisacodyl and Sennosides
  • Mechanism of Action:
    • Prodrugs activated in the small or large intestine.
  1. directly stimulate the intestinal mucosa → secrete water + electrolytes into the intestinal lumen.
  2. directly stimulate myenteric nerve plexus → ↑ smooth muscle contraction → ↑p peristalsis.

Stimulant Laxatives Efficacy and use

  • Can be referred to as “Rescue Therapy" because its not considered a 1st line agent for constipation
  • Except for opioid induced constipation.
  • Efficacy: Superior to osmotic agents (BUT more ADR).
  • Onset: po = 6-12 hours | pr = 15-60 min.
  • Dosing: typically PRN, some patients may require scheduled therapy (ex. opioid-users).
  • Safety: Long-term efficacy & safety unknown (studies were of short duration ≤4 weeks). Tolerance may occur.
  • Adverse Drug Reactions: abdominal discomfort, electrolyte imbalances (hyponatremia, hypokalemia and dehydration), allergic reactions and hepatotoxicity.

Enemas

  • Evidence: anecdotal- may have some use in acute constipation.
  • Main role: bowel cleansing prior to inspection or fecal impaction.
  • Onset: 1-5 min (NaP) vs 2-15 min (Mineral oil).
  • Mechanism of Action: (in addition to class action):
  • Increase volume in the colon = increase pressure on the lumen wall which increases motility.
  • Safety: Prefer mineral oil vs. sodium phosphate (due to risk of electrolyte imbalance).

Monitoring Constipation

  • When monitoring, consider whether you are using
  • a reasonable a parameter to this goal
  • a reasonable a time frame
  • a goal specific to the individual
  • Return to "Normal" and keep record of frequency in daily logs.
  • Acute Constipation: depends on agent chosen if patient should have a BM within 1-3 days.
  • Chronic Constipation: ideally patient should have regular BM patterns after 1 month of therapy.
  • Opioid-Induced Constipation: goal is to have a bowel movement at least every 3 days.
  • Consider consistency using ideal stool using the Bristol Stool Chart
  • Record bloating and cramping symptoms.
  • Observe complications and potential causes of laxative abuse which can result in dehydration, diarrhea, dependence, and electrolyte imbalances.
  • Also consider Quality of Life impacted by condition.

Diarrhea

  • Diarrhea is the unusually frequent excretion of watery stools
  • which is associated with loss of electrolytes and fecal rate > 200g /24Hours

Diarrhea incidence and sequelae.

  • Diarrhea is believed to be under-reported.
  • Worldwide, there are 2.8 billion episodes of diarrhea per year.
  • 1.9 million has resulted in death for children under 5 causing it to be the second cause of death in the age group.
  • The average person will experience 0.5-2 episodes per year.
  • Complications include dehydration, electrolyte imbalances, hypotension, vascular collapse, metabolic acidosis, hypokalemia, hypomagnesemia, hemorrhoids, and rectal prolapse.
  • Diarrhea impacts QoL due to an inability to perform daily activities.

Approach to managing diarrhea

  • Step 1: Establish the patient suffering from diarrhea.
  • Step 2: Rule out alarm features.
  • Step 3: Identify causes.
  • Step 4: Recommend non-pharmacologic options.
  • Step 5: Consider laxative therapy.

Establishing patient diarrhea use definitions and tools

  • Define the criteria of diarrhea
  • And duration using the stool chart.
  • It is important to consider if the definition and symptoms are troublesome depending on frequency.

What is Diarrhea

  • Diarrhea is an unusually frequent excretion of watery stool associated with loss of electrolytes and fecal matter
  • 3 loose or liquid tools of 24 hours

  • Loose stool occurring >75% of stools decreasing consistency

  • Acute < 14 days
  • Prolonged >14 days
  • Chronic > 4weeks.

Bristol Stool Chart

  • Type 1: Separate hard lumps, like nuts (hard to pass), indicates constipation.
  • Type 2: Sausage-shaped but lumpy indicates constipation.
  • Type 3: Like a sausage, but with cracks on the surface is considered an ideal stool.
  • Type 4: Like a sausage or snake, smooth and soft is considered an ideal stool.
  • Type 5: Soft blobs with clear-cut edges (passed easily), indicates diarrhea/urgency.
  • Type 6: Mushy consistency with ragged edges indicates diarrhea/urgency.
  • Type 7: Watery with no solid pieces, entirely liquid.

Conduct assessment to rule out alarm features with other conditions and high risk of conditions.

  • Red flag to consider are
  • Blood / mucous in stools
  • Severe abdominal pain or cramping
  • Fever
  • Server diarrhea
  • Signs of dehydration
  • Symptoms worsening.
  • Pregnancy
  • Frail elderly
  • Immuno compromise
  • Consider other symptoms/factors that lead to current dehydration and possible infectious diseases.

Identify medical conditions or diseases that call can worse diarrhea and what we will do to lessen or resolve

  • Viral Infection: rotavirus, norwalk, adenovirus, calicivirus
  • Bacteria: salmonella, camplylobacter, shigella, E.coli, giardia
  • Nutrition : high nutrient defecins or nutrition deficiency
  • Toxin and plants: arsenic and mushroom toxins, caffeine,
  • GI Disorders: Chronse, ulcerative colitis or IBS
  • Endocrine: Hypothyrodimse Addisons or diabetes
  • Psychological: Anxiety and nervousness
  • Other: Infection - fecal or cholecystectomy

Identifying Diarrhea Causes

  • Balance the risk of diarrhea vs the benefit of the medication
  • If possible lessen D/C medication
  • The lists include many agents like
  • Acetylcholinesterase
  • Antihyperteensvise
  • Anitmebaloiites
  • Chemo agents
  • Cholingieics and Lithium
  • Opiods and Allopurinol

Therapy Goals for Diarrhea

    1. what a reasonable parameters is for this goal
  • Is there a reasonable time frame
  • To be specific of the therapy being specific of that patients goal
  • Also correct for secondary diarrhea with normal stools

Complications of Diarrhea

Rehydration and electrolyte maintenance should be the first stone step of therapy with Oral Therapy and rehydration of balanced electrolytes.

  • There are only a few factors to consider because it can solve diarrhea.
  • Amount is given by weight of children or the 2L/day as adults until resolves.

Contraindicators to watch out for Oral Retardation therapy

  • Vomiting or comos
  • Worsening diarrhea when lacking the ability to keep stool down.
  • For the elderly make sure small amounts are eaten
  • Make sure they only last shelf life
  • Don't use excessive sugar when treating.
  • ½tsp salt or 6tsp of sugar which can be better

Oral rehydration

  • Started in 1969
  • To treat of dehydrations and can also prevent
  • Comes in liquid, dissolvable powder tablets and frezzies.
  • Can in Lemonade or even orange flavours. For dosing follow proper directions depending on age or symptoms.

Physiology Review of Intestinal Absorption

  • 3 mediators of ion transport for Intestinal Absorption
  • Ion channel
  • Movement depends on electrochemical gradient
  • Solutes to cross membrane
  • Allow 1+ substrates along for uphill transport
  • Transporters which are the Cotransporters/exchangers which transport some Also for diarrhea to have glucose with balance

Diarrhea treatment with rehydration

  • With the balance of diarrhea it needs to be the mostly to have and that absorption helps small Intestine with glucose

Oral Rehydration Ingredients

  • Facilitates absorption of Sodium and h2o to small intentstive
  • Na+/Ka to replace body loses of essentials ions with vomiting and diarrhea in body
  • Citrate Product stabilizes
  • Flavor to increase palatably
  • Zinc with duration and more.
  • There are hypo osmotic
  • To stool reduction by.20%
  • To decrease vomting.30.
  • Maintain efficiency.

Consider laxative therapy where safe and appropriate with pharmacological treatments if symptomatic,

  • Do antibiotics if Td self limited
  • Do hydrophilic Agents
  • No pro biotic
  • No anti secretory
  • No absorbents to aid fluid retention.

Is there Psyllium available for bulking

  • Haven't we seen this before
  • Liquid absorbed helps create stool for a slower passing.
  • Not for Dysphasia

AntiSecretroy Agents

  • Reduction in prostaglandin inhibits inflammation which will reduce hypertotliliy
  • Inhbits secretions which will reabsorb sodium.b
  • Cover all GI track to avoid toxins

Antisecretory Absorbing ingredients are Loperamide

  • It stops the muscule to pull fluid back.

Antimotility

  • effective can used multiple times a day.
  • Caution take except when advise.

For monitoring ask yoursel about goals for therepy

  • What's the defition of diarrhea
  • Loose more

Hemorrhoids Intro

  • Etiology any # of contributing factor leads to migration
  • Lack of diet and straining help move around
  • Diarrhea is pregnancy
  • Epideimotloy is hard to esablish there not much but its there: Peak 44-65 years old

Clinical Presentaiotn to rembemer.

  • Is the doctor not doing assessment is what will
  • Hemorrhoids will come out of larger more enlarged
  • Bleeding is blood more likely source
  • Pain
  • Anoderm is more snese than

Referral reasons include

  • Under age 2
  • More rectal issues
  • Is pain to cause many

Goals of Therapy

  • Realis symptoms of quality

Treatment to consider with non pharmacological

  • diet helps get better
  • Do it the right way Treatment to consider :
  • Steroids and anesthetic help deal
  • Avoid for long term issues
  • Follow guidelines helps with that to ensure more better quality

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

More Like This

Use Quizgecko on...
Browser
Browser