Fluid and Electrolyte Balance Quiz
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Questions and Answers

Which of the following is NOT a component of extracellular fluid (ECF)?

  • Cytoplasm (correct)
  • Interstitial Fluid
  • Lymph
  • Blood
  • What is the term for the fluid located between cells?

  • Lymph
  • Intracellular Fluid
  • Plasma
  • Interstitial Fluid (correct)
  • What is the term for the process of moving fluid and electrolytes between intracellular and extracellular spaces to maintain homeostasis?

  • Diffusion
  • Regulation (correct)
  • Filtration
  • Osmosis
  • Which of the following is NOT a factor that contributes to maintaining fluid and electrolyte balance in the body?

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

    What is the term used to describe the accumulation of excess fluid in the peritoneal cavity, often observed in conditions like liver failure?

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

    Which of the following is a cardiovascular manifestation of fluid overload?

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

    What may occur if urine output falls below the necessary level?

    <p>Wastes accumulate and lead to toxic nitrogen levels. (D)</p> Signup and view all the answers

    What is the typical range of insensible water loss in a person?

    <p>500-1000 mL/day (C)</p> Signup and view all the answers

    What role does aldosterone play in fluid balance?

    <p>It promotes sodium and water reabsorption in the kidneys. (B)</p> Signup and view all the answers

    When is antidiuretic hormone (ADH) secreted?

    <p>When blood osmolarity increases. (D)</p> Signup and view all the answers

    What triggers the release of natriuretic peptides?

    <p>Increased blood volume and pressure. (C)</p> Signup and view all the answers

    What is the function of the renin-angiotensin II pathway?

    <p>To maintain blood volume and pressure. (B)</p> Signup and view all the answers

    Why are older patients at higher risk for electrolyte imbalances?

    <p>They are often underhydrated and may have concurrent illnesses. (A)</p> Signup and view all the answers

    How are electrolyte levels typically determined in patients?

    <p>By conducting blood tests. (D)</p> Signup and view all the answers

    What happens when a patient consumes a diet high in potassium but their kidneys cannot compensate due to aging?

    <p>High levels of potassium develop in the blood (D)</p> Signup and view all the answers

    What nursing diagnosis is associated with significant dehydration?

    <p>Fluid Volume Deficit (A)</p> Signup and view all the answers

    Which of the following is NOT a cause of dehydration?

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

    How does the body compensate for decreased blood volume due to significant dehydration?

    <p>Vasoconstriction of peripheral vessels (C)</p> Signup and view all the answers

    What is the best indicator for fluid losses or gains in a patient?

    <p>Changes in daily weights (B)</p> Signup and view all the answers

    What is the consequence of inadequate tissue perfusion caused by hypovolemia?

    <p>Decreased organ function (D)</p> Signup and view all the answers

    Which of the following factors can contribute to dehydration based on environmental exposure?

    <p>Excessive sweating in heat (B)</p> Signup and view all the answers

    How much does 1 liter of water weigh in pounds?

    <p>2.2 pounds (A)</p> Signup and view all the answers

    What is the key difference between diffusion and osmosis?

    <p>Diffusion involves the movement of solutes, while osmosis involves the movement of solvents. (A)</p> Signup and view all the answers

    Why is the movement of electrolytes important in the body?

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

    Which of the following scenarios best exemplifies the concept of osmosis in maintaining fluid balance in the body?

    <p>The movement of water from the bloodstream into the cells to maintain cellular volume. (D)</p> Signup and view all the answers

    What is the minimum daily urine output required for a healthy adult to ensure proper waste elimination?

    <p>400-600 mL (D)</p> Signup and view all the answers

    Which of the following is NOT a primary route of fluid intake for an adult?

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

    How does the body regulate fluid balance through intake and output?

    <p>By adjusting fluid intake and output to match the body’s needs, such as during exercise or in hot weather. (C)</p> Signup and view all the answers

    Which symptom suggests hypovolemia when a patient changes positions?

    <p>Dizziness upon standing (A)</p> Signup and view all the answers

    What is a potential risk for older adults experiencing dehydration?

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

    What laboratory finding indicates dehydration?

    <p>Dark amber urine (D)</p> Signup and view all the answers

    How should fluid overload be assessed over time?

    <p>By tracking daily weight changes (C)</p> Signup and view all the answers

    What nursing intervention is critical in managing dehydration?

    <p>Encourage oral fluid intake (C)</p> Signup and view all the answers

    Which condition may lead to fluid overload?

    <p>Excessive IV fluid administration (D)</p> Signup and view all the answers

    What might indicate the presence of hypoxia in a patient?

    <p>Dry and scaly mucous membranes (C)</p> Signup and view all the answers

    What change in kidney function is associated with dehydration?

    <p>Increased urine specific gravity (D)</p> Signup and view all the answers

    Which intervention is essential for patients with a risk of falls due to dehydration?

    <p>Monitor level of alertness (C)</p> Signup and view all the answers

    What is a sign of poor skin turgor in a dehydrated patient?

    <p>Skin remains tented for several minutes (B)</p> Signup and view all the answers

    Flashcards

    Homeostasis

    The balance of body fluids' volume, concentration, composition, and acidity.

    Intracellular Fluid (ICF)

    Fluid located inside cells, essential for cellular function.

    Extracellular Fluid (ECF)

    Fluid outside of cells, including blood, lymph, and interstitial fluid.

    Solutes

    Electrolytes and nutrients dissolved in body fluids.

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    Solvents

    The fluid in the body that dissolves solutes.

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    Diffusion

    Movement of solute particles from high to low concentration across a membrane.

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    Osmosis

    Movement of water through a selectively permeable membrane from a higher concentration to a lower concentration.

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    Fluid Intake and Output

    Balance maintained by the amount of fluid consumed versus excreted by the body.

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    Minimum Urine Output

    The least amount of urine (400-600 mL) necessary to excrete waste products daily.

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    Basic Metabolic Profile (BMP)

    A blood test measuring key electrolytes, glucose, and kidney function.

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    Complete Metabolic Profile (CMP)

    A comprehensive blood test that includes BMP plus additional markers for liver function and more.

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    Potassium Regulation

    Balance of potassium intake and excretion maintained by the kidneys.

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    Dehydration Causes

    Factors leading to dehydration include fluid loss, inadequate intake, and certain medications.

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    Fluid Volume Deficit

    A nursing diagnosis indicating insufficient fluid intake or retention in the body.

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    Hypovolemia

    A condition caused by significant dehydration leading to decreased blood volume.

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    Weight Measurement

    Tracking changes in weight to assess fluid gains or losses in the patient.

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    Vasoconstriction

    Narrowing of blood vessels to redirect blood flow during dehydration.

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    Insensible Water Loss

    Water loss from skin, lungs, and stool, averaging 500-1000 mL/day.

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    Aldosterone

    Hormone secreted when Na+ levels are low, triggers kidney reabsorption of sodium and water.

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    Antidiuretic Hormone (ADH)

    Hormone released when blood osmolarity increases, promotes water retention.

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    Natriuretic Peptides

    Hormones secreted by the heart to reduce blood volume by increasing sodium and water excretion.

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    Renin-Angiotensin II Pathway

    System maintaining blood volume and pressure for adequate organ perfusion.

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    Electrolyte Balance

    Narrow normal ranges of electrolyte concentrations critical for health; small changes can be serious.

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    Risk Factors for Imbalances

    Older adults, patients with kidney disease, and generally ill individuals are at higher risk.

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    Determining Electrolyte Levels

    Blood tests are conducted to measure the concentrations of electrolytes in the body.

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    Tachycardia

    Increased heart rate attempting to maintain blood pressure during low blood volume.

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    Orthostatic Hypotension

    Decreased blood pressure with changes in body position, causing dizziness.

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    Tachypnea

    Increased breathing rate to compensate for low perfusion and oxygen intake.

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    Hypoxia

    Insufficient oxygen in the tissues.

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    Skin Turgor

    How well skin returns to normal after being pinched; indicates hydration status.

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    Urine Specific Gravity

    Measurement indicating urine concentration; higher values suggest dehydration.

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    Fluid Overload

    Excessive body fluid causing imbalance; hypervolemia.

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    Assessment Findings

    Physical signs indicating fluid imbalance; weight gain and lab results show hemodilution.

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    Drug Therapy for Dehydration

    Medications aimed to restore fluid balance by addressing the cause of dehydration.

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    Patient Safety Interventions

    Prioritize monitoring vital signs and assessing patient's stability to prevent falls.

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    Hypertension

    A condition of persistently elevated blood pressure, over 130/80 mmHg.

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    Pitting Edema

    Swelling in tissues that leaves an indentation when pressed.

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    Dyspnea

    Difficult or labored breathing, often feeling short of breath.

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    Diuretics

    Medications that help remove excess fluid from the body via increased urine output.

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    Nutritional Therapy

    Dietary changes including fluid and sodium restrictions to manage fluid overload.

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    Fluid Overload Monitoring

    Regularly assessing a patient for signs of excess fluid accumulation in the body.

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    Study Notes

    Adult Health: Fluid & Electrolytes Module A

    • Learning Objectives: Define fluid and electrolyte homeostasis, explain fluid and electrolyte physiology & homeostasis regulation, identify causes and manifestations of imbalances, and evaluate treatment outcomes.

    What is Homeostasis?

    • Body fluid characteristics are balanced in terms of volume, concentration (osmolarity), composition (electrolytes), and acidity (pH).
    • Balance is achieved by fluid and electrolyte movement between intracellular and extracellular compartments.
    • Imbalances can be dangerous.

    Two Types of Fluid in the Body

    • Intracellular Fluid (ICF): 40% of body weight, fluid inside cells.
    • Extracellular Fluid (ECF): 20% of body weight, fluid outside cells, including blood plasma and interstitial fluid.

    Cellular Homeostasis

    • Diffusion: Movement of particles from high concentration to low concentration across a permeable membrane. Essential for electrolyte transport.
    • Osmosis: Movement of solvent (water) across a selectively permeable membrane to equalise solute concentration.

    Fluid Balance

    • Fluid intake and output are balanced.
    • Daily fluid intake averages 2300 mL, mainly from food and liquids.
    • Fluid loss occurs through various routes, but most significantly through urine (minimum 400-600 mL/day to remove waste).
    • Insensible water loss (skin, lungs, stool) is also significant (500-1000 mL/day.)

    Hormonal Regulation of Fluid Balance

    • Aldosterone: Secreted when sodium levels are low in the extracellular fluid; promotes sodium and water reabsorption by the kidneys.
    • ADH (Antidiuretic Hormone): Released when blood osmolarity increases; promotes water reabsorption in the kidneys.
    • Natriuretic Peptides: Secreted by the heart when blood volume and pressure increase; promotes sodium and water excretion.
    • Renin-Angiotensin II Pathway: A critical system for maintaining blood pressure and volume.

    Electrolyte Balance & Imbalances

    • Electrolyte levels must remain within normal, narrow ranges for proper body function.
    • Changes, even small ones, can cause significant problems.
    • Older adults, those with kidney disease, or those generally unwell are at higher risk for imbalances.
    • Lab tests, such as BMP and CMP, are essential to assess electrolyte levels.

    Dehydration

    • Fluid intake is insufficient, or fluid loss exceeds intake, resulting in hypovolemia.
    • Causes include vomiting, diarrhoea, excessive sweating, and certain medications.
    • Symptoms include decreased urine output, weight loss, and changes in skin turgor.
    • Assessment, vital signs, and weight monitoring are critical.

    Fluid Overload

    • Fluid intake or retention exceeds the body's needs, causing hypervolemia.
    • Causes include kidney failure, heart failure, and prolonged steroid use.
    • Symptoms include increased weight, edema, increased blood pressure, and changes in respiratory rate.
    • Monitoring weight, vital signs, and urine output is essential.

    Interventions & Patient Safety

    • Monitoring vital signs (heart rate and blood pressure) and neurological status (alertness, orientation) is crucial.
    • Assess risk of falls due to postural hypotension, and muscle strength, gait stability, and level of alertness.
    • Replace fluids as needed to maintain balance or via intravenous (IV) fluids.
    • Monitor fluid intake and output.
    • Continuous observation for fluid overload or dehydration is essential.

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    Description

    Test your knowledge on fluid and electrolyte balance in the human body with this quiz. It covers important concepts like extracellular fluid, homeostasis, and the role of hormones in fluid regulation. Perfect for students studying physiology or healthcare.

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