Q.1 Which route of nutrition is preferred for critically ill patients if the gastrointestinal tract is functional?
Parenteral nutrition
Enteral nutrition
Oral supplementation only
Intravenous glucose only
Explanation - Enteral nutrition is preferred because it maintains gut integrity, reduces infection risk, and is more physiologic than parenteral nutrition.
Correct answer is: Enteral nutrition
Q.2 Which laboratory marker is commonly used to assess protein status in critically ill patients?
Serum albumin
Serum sodium
Serum creatinine
Serum calcium
Explanation - Serum albumin is often used as an indicator of protein status, though it may be affected by inflammation and hydration status.
Correct answer is: Serum albumin
Q.3 What is the primary complication associated with overfeeding in critically ill patients?
Hyperglycemia
Hypotension
Hypoglycemia
Anemia
Explanation - Overfeeding, especially with high carbohydrate intake, can cause hyperglycemia, which increases infection risk and worsens outcomes.
Correct answer is: Hyperglycemia
Q.4 Which type of formula is typically used for patients with impaired gastrointestinal function?
Polymeric formula
Elemental formula
Standard oral diet
High-fiber formula
Explanation - Elemental formulas contain predigested nutrients, which are easier to absorb in patients with compromised GI function.
Correct answer is: Elemental formula
Q.5 Which micronutrient is particularly important for wound healing in critically ill patients?
Vitamin C
Vitamin D
Iron
Calcium
Explanation - Vitamin C is essential for collagen synthesis and wound healing, making it critical for recovery in critically ill patients.
Correct answer is: Vitamin C
Q.6 In patients receiving enteral feeding, what is the recommended head-of-bed elevation to reduce aspiration risk?
0-10 degrees
15-30 degrees
30-45 degrees
60 degrees
Explanation - Elevating the head of the bed to 30-45 degrees helps prevent aspiration pneumonia in patients receiving enteral nutrition.
Correct answer is: 30-45 degrees
Q.7 Which electrolyte imbalance is most commonly associated with refeeding syndrome?
Hyperkalemia
Hypophosphatemia
Hypernatremia
Hypocalcemia
Explanation - Refeeding syndrome leads to a rapid shift of phosphate into cells, causing hypophosphatemia, which can be life-threatening.
Correct answer is: Hypophosphatemia
Q.8 Which patient population is at highest risk for malnutrition in the ICU?
Young trauma patients
Elderly with multiple comorbidities
Patients with uncomplicated pneumonia
Healthy elective surgery patients
Explanation - Elderly patients with comorbidities are at high risk due to decreased intake, chronic disease, and altered metabolism.
Correct answer is: Elderly with multiple comorbidities
Q.9 Which method is commonly used to estimate energy requirements in critically ill patients?
Indirect calorimetry
BMI calculation
Waist-to-hip ratio
Body surface area
Explanation - Indirect calorimetry measures oxygen consumption and CO2 production to estimate resting energy expenditure accurately in critically ill patients.
Correct answer is: Indirect calorimetry
Q.10 Which type of fatty acids should be emphasized in enteral nutrition for patients with systemic inflammation?
Omega-3 fatty acids
Saturated fatty acids
Trans fats
Omega-6 fatty acids
Explanation - Omega-3 fatty acids have anti-inflammatory properties and can improve outcomes in critically ill patients with systemic inflammation.
Correct answer is: Omega-3 fatty acids
Q.11 Which of the following is a sign of intolerance to enteral feeding?
High gastric residual volume
Normal bowel sounds
Stable blood pressure
Adequate urine output
Explanation - High gastric residual volumes indicate delayed gastric emptying and intolerance to enteral feeding, increasing the risk of aspiration.
Correct answer is: High gastric residual volume
Q.12 Which amino acid is considered conditionally essential in critically ill patients and important for immune function?
Glutamine
Leucine
Alanine
Glycine
Explanation - Glutamine supports immune function and gut integrity, becoming conditionally essential in critically ill patients under stress.
Correct answer is: Glutamine
Q.13 Which factor increases the risk of hyperglycemia in ICU patients receiving nutrition support?
High carbohydrate intake
Low protein intake
Adequate hydration
Enteral feeding tolerance
Explanation - Excess carbohydrate administration can overwhelm glucose metabolism, leading to hyperglycemia in critically ill patients.
Correct answer is: High carbohydrate intake
Q.14 Which vitamin deficiency is associated with impaired wound healing and immune dysfunction in ICU patients?
Vitamin A
Vitamin K
Vitamin B12
Vitamin E
Explanation - Vitamin A is essential for epithelial integrity, wound healing, and immune function, especially important in critically ill patients.
Correct answer is: Vitamin A
Q.15 Which type of lipid emulsion is preferred in parenteral nutrition for patients with liver dysfunction?
Soybean-based
Fish oil-based
Coconut oil-based
Butterfat-based
Explanation - Fish oil-based lipid emulsions are better tolerated in patients with liver dysfunction due to anti-inflammatory properties and reduced hepatotoxicity.
Correct answer is: Fish oil-based
Q.16 Which condition can result from prolonged inadequate protein intake in critically ill patients?
Muscle wasting
Hypernatremia
Hypocalcemia
Hyperbilirubinemia
Explanation - Insufficient protein intake leads to catabolism of muscle tissue, causing muscle wasting and impaired recovery.
Correct answer is: Muscle wasting
Q.17 Which monitoring parameter is essential during parenteral nutrition?
Blood glucose levels
Heart rate
Respiratory rate
Skin turgor
Explanation - Monitoring blood glucose is crucial to prevent hyperglycemia and related complications during parenteral nutrition.
Correct answer is: Blood glucose levels
Q.18 Which electrolyte imbalance is most likely to occur with high-volume nasogastric suctioning in ICU patients?
Hypokalemia
Hyperkalemia
Hypomagnesemia
Hypercalcemia
Explanation - Nasogastric suctioning removes gastric secretions rich in potassium, leading to hypokalemia if not replaced.
Correct answer is: Hypokalemia
Q.19 Which is a major risk factor for aspiration in critically ill patients receiving enteral nutrition?
Reduced consciousness
Normal bowel function
Adequate hydration
Low carbohydrate intake
Explanation - Patients with reduced consciousness are at high risk of aspiration because protective airway reflexes are impaired.
Correct answer is: Reduced consciousness
Q.20 Which type of feeding is recommended for critically ill patients with severe pancreatitis?
Jejunal feeding
Gastric feeding
Oral high-fat diet
Parenteral nutrition only
Explanation - Jejunal feeding bypasses the pancreas, reducing stimulation and improving tolerance in severe pancreatitis.
Correct answer is: Jejunal feeding
Q.21 Which strategy helps prevent refeeding syndrome in malnourished ICU patients?
Gradual initiation of nutrition
High-dose vitamin C supplementation
Immediate full-calorie feeding
Avoiding protein intake
Explanation - Starting nutrition slowly allows the body to adapt and reduces the risk of electrolyte shifts seen in refeeding syndrome.
Correct answer is: Gradual initiation of nutrition
Q.22 Which protein source is preferred in enteral formulas for critically ill patients to reduce renal burden?
Whey protein
Casein protein
Soy protein
Gelatin
Explanation - Whey protein is rapidly absorbed and efficiently used, reducing renal burden compared to other protein sources in critical illness.
Correct answer is: Whey protein
Q.23 Which of the following is considered a complication of prolonged parenteral nutrition?
Cholestasis
Hypertension
Hypoglycemia
Hypothermia
Explanation - Prolonged parenteral nutrition can lead to liver dysfunction, including cholestasis, due to lack of enteral stimulation.
Correct answer is: Cholestasis
Q.24 Which condition may require supplementation with glutamine in critically ill patients?
Severe burns
Mild dehydration
Uncomplicated fracture
Seasonal allergy
Explanation - Severe burns increase glutamine demand for immune function and nitrogen transport, making supplementation beneficial.
Correct answer is: Severe burns