Renal Failure and Management Quiz

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Questions and Answers

What is indicated by a GFR that falls below 50 mL/min?

  • Severe kidney impairment (correct)
  • Complete renal failure
  • Normal renal function
  • Mild kidney injury

What does hyperkalemia primarily result from in this context?

  • High sodium diet
  • Decreased potassium secretion (correct)
  • Excessive fluid intake
  • Increased physical activity

Which complication is associated with metabolic acidosis in renal failure?

  • Normal serum pH levels
  • Decreased acid secretion (correct)
  • Enhanced potassium conservation
  • Increased bicarbonate production

What is the relationship between serum phosphorus and calcium levels in this condition?

<p>Elevated phosphorus causes decreased calcium levels (A)</p> Signup and view all the answers

What is a likely cause of edema in patients with hypoalbuminemia?

<p>Decreased oncotic pressure (C)</p> Signup and view all the answers

Which finding might be observed on an ECG due to hyperkalemia?

<p>Tented T waves (D)</p> Signup and view all the answers

What nutritional strategy is recommended to prevent further kidney damage?

<p>Proteins of high biological value (D)</p> Signup and view all the answers

What is a key aspect of early medical management of kidney disease?

<p>Immediate dialysis treatment (B)</p> Signup and view all the answers

What is the recommended duration to retain Kayexalate for effective potassium removal?

<p>6 to 10 hours (D)</p> Signup and view all the answers

Which of the following medications requires dosage adjustment in patients with acute kidney injury (AKI)?

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

Which treatment is appropriate for managing severe acidosis in a patient with AKI?

<p>Sodium bicarbonate therapy or dialysis (C)</p> Signup and view all the answers

What consequence might indicate fluid retention in a patient with negative nitrogen balance?

<p>Daily weight gain or no weight loss (C)</p> Signup and view all the answers

In cases of respiratory problems in AKI patients, what is a priority action?

<p>Implementing ventilatory measures (B)</p> Signup and view all the answers

What is a common outcome of AKI that affects nutritional status?

<p>Increased tissue catabolism (A)</p> Signup and view all the answers

What should be monitored to manage elevated serum phosphate levels in AKI patients?

<p>Absorption of phosphate with binding agents (D)</p> Signup and view all the answers

Which of the following statements about the use of diuretics in AKI is correct?

<p>Diuretics have not been shown to enhance recovery from AKI. (A)</p> Signup and view all the answers

What is the primary function of erythropoietin produced by the kidneys?

<p>Stimulate the production of red blood cells (C)</p> Signup and view all the answers

Which form of vitamin D is activated by the kidneys?

<p>1,25-dihydroxycholecalciferol (A)</p> Signup and view all the answers

What is one function of prostaglandins produced by the kidneys?

<p>Causing vasodilation to maintain renal blood flow (B)</p> Signup and view all the answers

Which metabolic waste product is primarily excreted through the kidneys?

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

What role do leukotrienes play in the kidneys?

<p>They are mediators of renal diseases (A)</p> Signup and view all the answers

What is the main excretory function of the kidneys?

<p>Excretion of metabolic waste products (D)</p> Signup and view all the answers

Which part of the nervous system mediates the filling and emptying of the bladder?

<p>Both sympathetic and parasympathetic nervous systems (D)</p> Signup and view all the answers

What is end-stage kidney disease (ESKD)?

<p>A final stage of chronic kidney disease requiring renal replacement therapies (C)</p> Signup and view all the answers

What triggers the consciousness of bladder filling?

<p>Peripheral nerve innervation from T10 through T12 (B)</p> Signup and view all the answers

Which factor is NOT considered a risk factor for chronic kidney disease (CKD)?

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

What primarily causes damage to the kidneys in the early stages of CKD?

<p>Prolonged acute inflammation that is systemic (D)</p> Signup and view all the answers

What clinical manifestation might indicate the development of CKD?

<p>Decreased erythropoietin production leading to anemia (C)</p> Signup and view all the answers

Which is an important assessment in evaluating kidney function?

<p>Glomerular filtration rate (GFR) (C)</p> Signup and view all the answers

What is a recommended blood pressure target for managing CKD?

<p>130/80 mmHg (D)</p> Signup and view all the answers

What is the relationship between creatinine levels and CKD symptoms?

<p>As creatinine levels increase, symptoms of CKD begin to appear (C)</p> Signup and view all the answers

What is the primary goal of medical management in CKD?

<p>To prevent progression and manage symptoms effectively (B)</p> Signup and view all the answers

What is the primary purpose of accurate daily weights and I&O records?

<p>To assess fluid and electrolyte status (B)</p> Signup and view all the answers

Which of the following strategies helps to reduce the metabolic rate during acute stages of a disorder?

<p>Providing bed rest (A)</p> Signup and view all the answers

What is the best method to prevent respiratory complications like atelectasis?

<p>Providing assistance to turn, cough, and breathe deeply (D)</p> Signup and view all the answers

What should be prioritized to minimize the risk of infection when using invasive lines?

<p>Aseptic technique during insertion and maintenance (A)</p> Signup and view all the answers

What can be a consequence of using an indwelling urinary catheter?

<p>Increased risk of urinary tract infection (UTI) (C)</p> Signup and view all the answers

What is essential in providing skin care for patients with edema?

<p>Meticulous skin care to prevent breakdown (A)</p> Signup and view all the answers

Which treatment method is indicated for severe fluid and electrolyte disturbances?

<p>Hemodialysis, PD, or CRRT (C)</p> Signup and view all the answers

Why is it important to provide psychosocial support to patients undergoing treatment?

<p>To address psychological needs and family concerns (A)</p> Signup and view all the answers

What is the primary cause of death in patients with end-stage kidney disease (ESKD)?

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

Which symptom is associated with uremic peripheral neuropathy in ESKD?

<p>Restless leg syndrome (D)</p> Signup and view all the answers

What factors influence the progression rate of end-stage kidney disease?

<p>Underlying disorder and hypertension (D)</p> Signup and view all the answers

Which of the following is a neurologic manifestation of ESKD?

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

What skin condition may be observed in a patient with ESKD?

<p>Dry, flaky skin (A)</p> Signup and view all the answers

Which cardiovascular symptom is commonly associated with end-stage kidney disease?

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

Which of the following is NOT a systemic sign associated with end-stage kidney disease?

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

What leads to the development of uremia in patients with declining renal function?

<p>Accumulation of waste products in the blood (A)</p> Signup and view all the answers

Flashcards

What is Erythropoietin?

A glycoprotein produced by the kidneys that stimulates red blood cell production in the bone marrow.

Vitamin D Activation

The final conversion of inactive vitamin D into its active form, 1,25-dihydroxycholecalciferol, takes place in the kidneys. This active form of vitamin D is crucial for maintaining calcium balance in the body.

Kidney Prostaglandins

Kidneys produce prostaglandins such as PGE2 and PGI2, which have vasoactive effects. These prostaglandins help regulate renal blood flow by causing selective vasodilation or vasoconstriction.

Kidney's Role in Waste Removal

The kidneys are responsible for eliminating metabolic waste products from the body. This includes urea, the primary waste product of protein metabolism.

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Waste Products Excreted by Kidneys

Urea, creatinine, phosphates, sulfates, and uric acid are all waste products that the kidneys eliminate through urine.

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Bladder Function

The bladder is the reservoir for urine. Filling and emptying of the bladder are controlled by coordinated sympathetic and parasympathetic nervous system mechanisms involving the detrusor muscle and bladder outlet.

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Bladder Filling and Urge

As the bladder fills, stretch receptors within the bladder wall are activated, sending signals through sympathetic pathways to the spinal cord (T10-T12). This initiates the urge to urinate.

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Drug Metabolism and Kidneys

The kidneys serve a crucial role in eliminating drug metabolites, playing a significant part in drug metabolism overall.

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End-Stage Kidney Disease (ESKD)

A condition where the kidneys are unable to remove waste products and regulate bodily fluids, leading to the need for dialysis or transplantation.

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Glomerular Filtration Rate (GFR)

A measure of the amount of blood filtered by the kidneys per minute.

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Creatinine Clearance

A test to measure how much creatinine the kidneys remove from the blood in 24 hours.

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What causes Chronic Kidney Disease (CKD)?

The underlying cause of CKD can be hypertension, diabetes, or other conditions.

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Early Stages of CKD

CKD can progress slowly and silently, with few symptoms in the early stages.

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Symptoms of CKD

Fluid retention, anemia, and electrolyte imbalances are common symptoms of CKD.

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Treatment of CKD

Managing high blood pressure, anemia, and blood sugar helps slow down CKD progression.

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Renal Replacement Therapies

Early referral for dialysis or transplantation is crucial for patients with advanced CKD.

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Chronic Kidney Disease (CKD)

A condition where the kidneys lose their ability to filter waste products properly, leading to a buildup of toxins in the body.

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Fixed Specific Gravity

A specific gravity test measures the concentration of dissolved substances in urine. A fixed specific gravity of 1.010 in CKD indicates the kidneys are not concentrating urine properly.

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Proteinuria in CKD

Proteins in urine are a sign of damage in the kidneys. In CKD, proteinuria can be variable, meaning the amount of protein excreted in the urine fluctuates.

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Decreased GFR in CKD

A decrease in glomerular filtration rate (GFR) below 50 mL/min is a hallmark of CKD, indicating impaired kidney function.

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Cardiac Enlargement and ECG Changes in CKD

The heart, especially the left ventricle, enlarges in CKD due to increased workload from hypertension & fluid buildup. Hyperkalemia's effect on the ECG is characterized by tall, pointed T waves - a distinctive pattern.

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Increased Phosphorus and Decreased Calcium in CKD

CKD can lead to a buildup of phosphorus in the blood due to decreased renal excretion. The body tries to compensate by binding calcium to phosphorus, leading to a decrease in serum calcium.

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Pericarditis in CKD

A pericardial friction rub is a scratching or grating sound heard during auscultation of the heart, characteristic of pericarditis. Pulsus paradoxus, a drop in blood pressure during inspiration, is another sign of pericarditis.

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Weight Management and Diuretics in CKD

Maintaining a healthy weight and reducing fluid overload is important in managing CKD. Diuretics help remove excess fluid from the body.

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What is Kayexalate used for?

Potassium levels are high in the blood (hyperkalemia) and can lead to heart rhythm problems. Kayexalate is a medication that binds to potassium in the gut and helps remove it from the body.

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What's the purpose of an enema after using Kayexalate?

To help remove the Kayexalate medication from the gut, a cleansing enema might be needed. This helps prevent complications like fecal impaction.

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What is the treatment for hemodynamic instability in patients with high potassium?

When a patient is experiencing dangerously low blood pressure, mental status changes, or abnormal heart rhythms, giving dextrose, insulin, and calcium helps move potassium back into the cells and stabilize the situation.

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Why are dosages adjusted for certain drugs in patients with AKI?

As many medications are removed by the kidneys, dosages must be adjusted for people with AKI (Acute Kidney Injury). This is to prevent medication buildup and harmful side effects.

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Do diuretics improve AKI recovery?

Diuretics help with fluid management but haven't been shown to improve AKI recovery.

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How is severe acidosis treated in AKI?

If a patient with AKI has severe acidosis, monitoring their blood gases and bicarbonate levels is important because they may need sodium bicarbonate treatment or dialysis.

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What is done when a patient with AKI develops respiratory issues?

For patients developing respiratory problems due to AKI, appropriate ventilatory measures, such as mechanical ventilation, may be required to ensure good lung function.

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What is done to manage high phosphate levels in AKI?

Elevated serum phosphate levels in AKI can be controlled with phosphate-binding agents like calcium or lanthanum carbonate. These medications decrease the absorption of phosphate from the intestines, helping prevent further increases in phosphate levels.

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Reducing Metabolic Rate in AKI

The most acute stage of AKI involves reducing metabolic rate by limiting exertion and preventing fever and infection. This approach helps decrease energy demands and minimizes catabolism, protecting the kidneys from further damage.

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Fluid and Electrolyte Balance in AKI

Maintaining adequate fluid and electrolyte balance is essential for AKI management. Accurate monitoring of daily weight, I&O records, and immediate reporting of any imbalances ensures prompt intervention and prevents complications.

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Promoting Pulmonary Function in AKI

Frequent turning, coughing, and deep breathing are vital for preventing atelectasis and respiratory infections in AKI patients. This helps maintain lung function and oxygenation.

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Preventing Infection in AKI

Aseptic technique is crucial when dealing with invasive lines and catheters to minimize infection risk in AKI patients. This reduces the burden on the kidneys and prevents further complications.

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Providing Skin Care in AKI

Maintaining skin integrity is crucial in AKI patients due to edema and potential breakdown. Regular baths, turning, moisturizing, and nail care help prevent excoriation and discomfort.

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Providing Psychosocial Support in AKI

Psychological support is crucial for both the patient and their family during AKI treatment. Providing accurate information, addressing concerns, and offering empathy help them cope with the challenges.

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Treatment Options for AKI

Hemodialysis, peritoneal dialysis (PD), or continuous renal replacement therapy (CRRT) may be required to treat severe fluid and electrolyte disturbances in AKI. The duration of these treatments depends on the severity and cause of kidney damage.

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Ongoing Assessment in AKI

Continuous assessment for AKI complications and precipitating causes is essential. This includes monitoring for fluid overload, electrolyte imbalances, infection, and other factors that can worsen kidney function.

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Uremia

The accumulation of waste products in the blood, particularly urea, due to impaired kidney function.

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Uremic Syndrome

A condition characterized by the accumulation of uremic waste products, affecting multiple organs and systems in the body.

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Uremic Peripheral Neuropathy

A complication of ESKD where the nerves in the limbs become damaged, leading to various symptoms like pain, numbness, and tingling.

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Asterixis

A sign of ESKD seen in the neurological system, characterized by rapid, involuntary jerking movements of the hands or feet.

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Hyperkalemia

A buildup of potassium in the blood, a common complication of ESKD that can lead to serious heart rhythm problems.

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Pericarditis

Inflammation of the sac surrounding the heart, a potential complication of ESKD. The heart's sac gets angry!

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Kussmaul Respirations

A type of breathing pattern associated with ESKD, characterized by deep, rapid breathing.

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Study Notes

Course Information

  • Course: NCM 112
  • Topic: Care of Clients with Fluid and Electrolyte Problems in Renal Disorders
  • Focus: Nursing care for adult clients with fluid and electrolyte imbalances in any setting.

Course Outline

  • Week 10 & 12: Unit II: Fluid and Electrolyte Imbalances in Renal Disorders
  • Week 13 & 14: Unit III: Fluid and Electrolytes Imbalances of Patient with Burn Injury
  • Week 15 & 17: Unit IV: Fluid and Electrolytes Imbalances of Patient with Neurogenic Disorders
  • Week 18: Final Examination
  • Week 10 & 12: Introduction to urinary system structure and function, fluids and electrolytes imbalances in renal disorders, acute and chronic glomerulonephritis, nephrotic syndrome, renal failure, end-stage renal disease, dialysis (peritoneal and hemodialysis)

Rationale

  • This module helps students learn concepts, theories, and principles of fluid and electrolyte imbalances in renal disorders.
  • Provides guidance and equips student nurses for comprehensive care planning.

Instructions to Users

  • Students answer provided activities to demonstrate understanding of concepts and theories.
  • Developmental activities will include applications, discussions, and analysis.
  • Closure activities consist of case studies, critical thinking exercises, and evaluation examinations.

Learning Objectives

  • Describe the structure and function of the renal and urinary systems.
  • Explain the role of the kidneys in regulating fluids and electrolytes.
  • Identify diagnostic studies for urinary tract function and nursing implications.
  • Describe factors in kidney disorder development.
  • Differentiate acute and chronic kidney disease.
  • Explain pathophysiology, clinical manifestations, and medical/nursing management for kidney disorders.
  • Apply nursing process to care for patients with renal disorders.
  • Develop a comprehensive care plan and health education for patients with renal disorders.
  • Ensure comprehensive, accurate, and secure documentation.

Structure and Functions of the Kidney

  • Paired bean-shaped organs located outside the peritoneal cavity
  • Each kidney is around 10-12 cm long, 5-6 cm wide, and 2.5 cm deep
  • Weighs 113-170g
  • Protected by a fibrous external capsule and fatty connective tissue
  • Contains internal structures: cortex and medulla, renal pyramids, papillae, renal pelvis, and calyces

Nephron Structure and Function

  • Functional unit of the kidneys.
  • Each nephron has blood filtration and tubular structures that reabsorb materials from the filtrate and secrete materials from the blood into filtrate.
  • Two divisions: cortex and medulla
  • Contains glomerulus, peritubular capillaries, and tubular structures which process glomerular filtrate.

Renal Blood Supply

  • Supplied by a single renal artery branching into segmental, lobular, interlobular, arcuate, and intralobular arteries.
  • Blood flow to the kidneys passes mostly through the cortex
  • Decreased perfusion or sympathetic stimulation can redistribute blood flow from cortex to medulla.

Nephron (Basic Unit)

  • Each kidney has more than 1 million nephrons
  • Functions: Filtration, reabsorption, and secretion of water, electrolytes, and other molecules to maintain internal balance.
  • Components: glomerulus (filtration), proximal convoluted tubule (reabsorption), loop of Henle (concentration), distal convoluted tubule (reabsorption), collecting duct (final concentration, secretion).

Glomerulus

  • A network of capillaries where blood is filtered within Bowman's capsule
  • Three layers: capillary endothelial layer, basement membrane, and single-celled capsular epithelial layer, (podocytes)
  • Size of the pores in the basement membrane prevents red blood cells and large proteins from entering the filtrate
  • Mesangial cells help regulate blood flow and filter waste products.

Tubular Components

  • Proximal convoluted tubule - Highly coiled, drains Bowman's capsule
  • Loop of Henle - Thin, looped structure
  • Distal convoluted tubule - Distal coiled portion joining several tubules to form collecting tubules, the filtrate passes through these segments before entering renal pelvis.

Functions of Kidneys

  • Urine formation
  • Excretion of waste products
  • Regulation of electrolytes
  • Regulation of acid-base balance
  • Control of water balance
  • Control of blood pressure
  • Renal clearance
  • Regulation of red blood cell production
  • Synthesis of vitamin D to active form
  • Secretion of prostaglandins

Urine Formation Steps (Process of Filtrate Formation)

  • Filtration by glomerulus- Water and soluble substances smaller than proteins form the filtrate.
  • Tubular Reabsorption- Electrolytes and nutrients are reabsorbed into bloodstream.
  • Tubular Secretion- Waste products and excess substances are secreted into filtrate.

Glomerular Filtration Rate

  • Rate at which glomeruli filter blood
  • Approximately 125 mL/min in adults.

Regulation of Water Excretion

  • Kidney regulates urine volume in response to fluid intake
  • Hormonal controls, such as ADH, control water reabsorption and concentration.

Regulation of Electrolyte Excretion

  • Aldosterone regulates sodium excretion.
  • Kidney plays roles in controlling other electrolytes as well.

Regulation of Acid-Base Balance

  • Kidney regulates acid-base through reabsorption/secretion of bicarbonate and hydrogen ions and production of ammonia.

Excretion of Waste Products

  • Kidney excretes urea, creatinine, phosphates, sulfates.
  • Uric acid.

Urine Storage

  • Reservoir for urine (bladder) coordinated via sympathetic and parasympathetic systems.
  • Filling and emptying controlled by the detrusor muscle, which contracts to empty the bladder.
  • Signals from sensory receptors convey need for urination.

Bladder Emptying

  • Micturition reflex involving sympathetic and parasympathetic pathways.
  • Voiding occurs upon relaxation of the external sphincter and contraction of the bladder.

Gerontologic Considerations

  • GFR progressively declines with age, making older adults more susceptible to kidney injury.
  • Changes in thirst perception and bladder function may occur.

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