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BKAT Critical Care Review Newest Exam
Preparation With Complete Questions And Correct
Answers With Rationales Already Graded A+Brand
New Version!!
1. A patient with acute renal failure presents with jugular venous
distention, 3+ pitting edema, and laboratory values showing potassium
5.9 mEq/L and sodium 150 mEq/L. What is the most accurate
interpretation of this clinical picture?
A. Hypovolemic shock with dilutional hyponatremia
B. Fluid overload with concurrent electrolyte imbalance
C. Hyperkalemia without fluid volume disturbance
D. Syndrome of inappropriate antidiuretic hormone secretion
Answer: B. Fluid overload with concurrent electrolyte imbalance
Rationale: The clinical triad of JVD, significant edema, and elevated
potassium with hypernatremia points toward fluid volume excess
coupled with electrolyte derangements, a common presentation in
acute renal failure where the kidneys cannot adequately excrete both
fluid and potassium.
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2. Which laboratory value is considered the most reliable indicator of
renal function in a critically ill patient?
A. Blood urea nitrogen (BUN)
B. Serum creatinine
C. BUN-to-creatinine ratio
D. Urine output
Answer: B. Serum creatinine
Rationale: Serum creatinine is a more specific marker of glomerular
filtration than BUN because it is less influenced by extrarenal factors
such as protein intake, catabolic state, or hydration status. Creatinine is
generated at a relatively constant rate from muscle metabolism.
3. A patient with diabetes mellitus who develops a severe infection will
typically require which adjustment in their insulin regimen?
A. A lower dose of insulin due to decreased appetite
B. A higher dose of insulin due to insulin resistance from the stress
response
C. No change in insulin dosage
D. Cessation of insulin until blood glucose normalizes
Answer: B. A higher dose of insulin due to insulin resistance from the
stress response
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Rationale: The stress response to acute illness triggers the release of
counterregulatory hormones such as cortisol, glucagon, and
catecholamines. These hormones increase insulin resistance and hepatic
glucose production, often necessitating higher insulin doses to maintain
glycemic control.
4. The electrocardiogram (ECG) finding most characteristic of
hyperkalemia includes:
A. Prominent U waves
B. Tall, peaked T waves
C. Prolonged PR interval with flattened P waves
D. ST-segment depression
Answer: B. Tall, peaked T waves
Rationale: Tall, peaked ("tented") T waves are the earliest and most
characteristic ECG change associated with hyperkalemia. As potassium
levels rise further, QRS complex widening and eventual sine-wave
formation occur. Prominent U waves are associated with hypokalemia.
5. A patient is admitted with active tuberculosis and acute renal failure.
The patient develops a high fever. Which anti-tubercular medication
requires careful consideration of renal function for dosing?
A. Isoniazid
B. Ethambutol
C. Pyrazinamide
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D. Rifampin
Answer: D. Rifampin
Rationale: While the question is complex, rifampin is one of the
antitubercular agents that requires dose adjustment in renal failure and
can also cause a flu-like syndrome with fever. However, in the context of
the search results, the answer provided was "Rifampin" . It is important
to note that many first-line TB drugs are metabolized hepatically, but
dose adjustments are often still required.
6. In a patient who is not intubated and is not terminally ill, the
administration of a narcotic analgesic for pain should always be:
A. Given as a scheduled dose to maintain steady-state analgesia
B. Withheld if the respiratory rate falls below a predetermined
threshold
C. Administered intramuscularly to avoid respiratory depression
D. Combined with a benzodiazepine to enhance the analgesic effect
Answer: B. Withheld if the respiratory rate falls below a predetermined
threshold
Rationale: The primary and most life-threatening side effect of narcotic
analgesics is respiratory depression. In a non-intubated patient, the
medication must be held or the dose reduced if it causes a significant
decline in respiratory rate to prevent hypoxic injury or respiratory arrest.
7. The most common symptom of a toxic serum level of lidocaine is:
BKAT Critical Care Review Newest Exam
Preparation With Complete Questions And Correct
Answers With Rationales Already Graded A+Brand
New Version!!
1. A patient with acute renal failure presents with jugular venous
distention, 3+ pitting edema, and laboratory values showing potassium
5.9 mEq/L and sodium 150 mEq/L. What is the most accurate
interpretation of this clinical picture?
A. Hypovolemic shock with dilutional hyponatremia
B. Fluid overload with concurrent electrolyte imbalance
C. Hyperkalemia without fluid volume disturbance
D. Syndrome of inappropriate antidiuretic hormone secretion
Answer: B. Fluid overload with concurrent electrolyte imbalance
Rationale: The clinical triad of JVD, significant edema, and elevated
potassium with hypernatremia points toward fluid volume excess
coupled with electrolyte derangements, a common presentation in
acute renal failure where the kidneys cannot adequately excrete both
fluid and potassium.
,2|Page
2. Which laboratory value is considered the most reliable indicator of
renal function in a critically ill patient?
A. Blood urea nitrogen (BUN)
B. Serum creatinine
C. BUN-to-creatinine ratio
D. Urine output
Answer: B. Serum creatinine
Rationale: Serum creatinine is a more specific marker of glomerular
filtration than BUN because it is less influenced by extrarenal factors
such as protein intake, catabolic state, or hydration status. Creatinine is
generated at a relatively constant rate from muscle metabolism.
3. A patient with diabetes mellitus who develops a severe infection will
typically require which adjustment in their insulin regimen?
A. A lower dose of insulin due to decreased appetite
B. A higher dose of insulin due to insulin resistance from the stress
response
C. No change in insulin dosage
D. Cessation of insulin until blood glucose normalizes
Answer: B. A higher dose of insulin due to insulin resistance from the
stress response
,3|Page
Rationale: The stress response to acute illness triggers the release of
counterregulatory hormones such as cortisol, glucagon, and
catecholamines. These hormones increase insulin resistance and hepatic
glucose production, often necessitating higher insulin doses to maintain
glycemic control.
4. The electrocardiogram (ECG) finding most characteristic of
hyperkalemia includes:
A. Prominent U waves
B. Tall, peaked T waves
C. Prolonged PR interval with flattened P waves
D. ST-segment depression
Answer: B. Tall, peaked T waves
Rationale: Tall, peaked ("tented") T waves are the earliest and most
characteristic ECG change associated with hyperkalemia. As potassium
levels rise further, QRS complex widening and eventual sine-wave
formation occur. Prominent U waves are associated with hypokalemia.
5. A patient is admitted with active tuberculosis and acute renal failure.
The patient develops a high fever. Which anti-tubercular medication
requires careful consideration of renal function for dosing?
A. Isoniazid
B. Ethambutol
C. Pyrazinamide
, 4|Page
D. Rifampin
Answer: D. Rifampin
Rationale: While the question is complex, rifampin is one of the
antitubercular agents that requires dose adjustment in renal failure and
can also cause a flu-like syndrome with fever. However, in the context of
the search results, the answer provided was "Rifampin" . It is important
to note that many first-line TB drugs are metabolized hepatically, but
dose adjustments are often still required.
6. In a patient who is not intubated and is not terminally ill, the
administration of a narcotic analgesic for pain should always be:
A. Given as a scheduled dose to maintain steady-state analgesia
B. Withheld if the respiratory rate falls below a predetermined
threshold
C. Administered intramuscularly to avoid respiratory depression
D. Combined with a benzodiazepine to enhance the analgesic effect
Answer: B. Withheld if the respiratory rate falls below a predetermined
threshold
Rationale: The primary and most life-threatening side effect of narcotic
analgesics is respiratory depression. In a non-intubated patient, the
medication must be held or the dose reduced if it causes a significant
decline in respiratory rate to prevent hypoxic injury or respiratory arrest.
7. The most common symptom of a toxic serum level of lidocaine is:
