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BKAT ICU Post Test Newest Exam Preparation With
Complete Questions And Correct Answers With
Rationales Already Graded A+Brand New Version!!
1. A patient is admitted with a diagnosis of acute myocardial infarction.
Which electrocardiographic finding is most indicative of acute injury?
A) T-wave inversion
B) Pathologic Q wave
C) ST-segment elevation
D) Prolonged PR interval
Answer: C) ST-segment elevation
Rationale: ST-segment elevation in two or more contiguous leads is the
hallmark of acute myocardial injury and indicates transmural ischemia.
T-wave inversions and pathologic Q waves can indicate evolving or old
infarction but are not acute injury markers. A prolonged PR interval is
associated with heart blocks, not ischemia.
2. In hemodynamic monitoring, which parameter directly reflects left
ventricular preload?
A) Central Venous Pressure (CVP)
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B) Pulmonary Artery Wedge Pressure (PAWP)
C) Cardiac Output (CO)
D) Systemic Vascular Resistance (SVR)
Answer: B) Pulmonary Artery Wedge Pressure (PAWP)
Rationale: PAWP, also known as Pulmonary Capillary Wedge Pressure
(PCWP), is a direct measurement of left ventricular end-diastolic
pressure, which reflects left ventricular preload. CVP reflects right
ventricular preload. CO measures the volume of blood pumped by the
heart, and SVR reflects afterload.
3. What is the primary mechanism of action of norepinephrine when
used in the treatment of septic shock?
A) Selective beta-1 adrenergic agonism
B) Selective beta-2 adrenergic agonism
C) Potent alpha-1 and mild beta-1 adrenergic agonism
D) Inhibition of phosphodiesterase
Answer: C) Potent alpha-1 and mild beta-1 adrenergic agonism
Rationale: Norepinephrine is a potent vasopressor. Its primary effect is
alpha-1 agonism, causing significant vasoconstriction and increased
SVR. It also has mild beta-1 effects, increasing heart rate and
contractility. This makes it a first-line agent for septic shock to restore
mean arterial pressure.
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4. A patient on mechanical ventilation has a high-pressure alarm
sounding. Which of the following is the most immediate and
appropriate nursing action?
A) Suction the endotracheal tube.
B) Manually ventilate the patient with a bag-valve mask.
C) Disconnect the ventilator circuit and check for a kink.
D) Assess the patient's vital signs and breath sounds.
Answer: B) Manually ventilate the patient with a bag-valve mask.
Rationale: The priority when any ventilator alarm sounds is to ensure
the patient is being oxygenated and ventilated. The nurse should
immediately disconnect the patient from the ventilator and manually
ventilate with a bag-valve mask, while assessing the cause of the alarm.
This ensures patient safety while troubleshooting the issue.
5. Which finding is an early sign of increased intracranial pressure (ICP)?
A) Widening pulse pressure
B) Bradycardia
C) Ipsilateral pupil dilation
D) Decreased level of consciousness
Answer: D) Decreased level of consciousness
Rationale: A change in the level of consciousness (LOC) is the earliest
and most sensitive indicator of increased ICP. As ICP rises, cerebral
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perfusion decreases, affecting the reticular activating system. Cushing's
triad (widening pulse pressure, bradycardia, irregular respirations) is a
late and ominous sign. Pupil changes indicate compression of cranial
nerve III, which is also a later sign.
6. A patient with a history of chronic kidney disease has a serum
potassium level of 6.8 mEq/L. Which ECG change would the nurse
expect to see?
A) U waves
B) Widened QRS complex
C) Flattened T waves
D) Prominent U waves
Answer: B) Widened QRS complex
Rationale: Hyperkalemia (elevated potassium) affects cardiac
conduction. Early changes include peaked, tented T waves. As
potassium levels rise further, the QRS complex widens, the PR interval
lengthens, and the P wave may flatten or disappear, leading to a sine
wave pattern and ventricular fibrillation. U waves and flattened T waves
are more characteristic of hypokalemia.
7. What is the primary goal of therapeutic hypothermia post-cardiac
arrest?
A) Reduce myocardial oxygen demand
B) Prevent seizures
BKAT ICU Post Test Newest Exam Preparation With
Complete Questions And Correct Answers With
Rationales Already Graded A+Brand New Version!!
1. A patient is admitted with a diagnosis of acute myocardial infarction.
Which electrocardiographic finding is most indicative of acute injury?
A) T-wave inversion
B) Pathologic Q wave
C) ST-segment elevation
D) Prolonged PR interval
Answer: C) ST-segment elevation
Rationale: ST-segment elevation in two or more contiguous leads is the
hallmark of acute myocardial injury and indicates transmural ischemia.
T-wave inversions and pathologic Q waves can indicate evolving or old
infarction but are not acute injury markers. A prolonged PR interval is
associated with heart blocks, not ischemia.
2. In hemodynamic monitoring, which parameter directly reflects left
ventricular preload?
A) Central Venous Pressure (CVP)
,2|Page
B) Pulmonary Artery Wedge Pressure (PAWP)
C) Cardiac Output (CO)
D) Systemic Vascular Resistance (SVR)
Answer: B) Pulmonary Artery Wedge Pressure (PAWP)
Rationale: PAWP, also known as Pulmonary Capillary Wedge Pressure
(PCWP), is a direct measurement of left ventricular end-diastolic
pressure, which reflects left ventricular preload. CVP reflects right
ventricular preload. CO measures the volume of blood pumped by the
heart, and SVR reflects afterload.
3. What is the primary mechanism of action of norepinephrine when
used in the treatment of septic shock?
A) Selective beta-1 adrenergic agonism
B) Selective beta-2 adrenergic agonism
C) Potent alpha-1 and mild beta-1 adrenergic agonism
D) Inhibition of phosphodiesterase
Answer: C) Potent alpha-1 and mild beta-1 adrenergic agonism
Rationale: Norepinephrine is a potent vasopressor. Its primary effect is
alpha-1 agonism, causing significant vasoconstriction and increased
SVR. It also has mild beta-1 effects, increasing heart rate and
contractility. This makes it a first-line agent for septic shock to restore
mean arterial pressure.
,3|Page
4. A patient on mechanical ventilation has a high-pressure alarm
sounding. Which of the following is the most immediate and
appropriate nursing action?
A) Suction the endotracheal tube.
B) Manually ventilate the patient with a bag-valve mask.
C) Disconnect the ventilator circuit and check for a kink.
D) Assess the patient's vital signs and breath sounds.
Answer: B) Manually ventilate the patient with a bag-valve mask.
Rationale: The priority when any ventilator alarm sounds is to ensure
the patient is being oxygenated and ventilated. The nurse should
immediately disconnect the patient from the ventilator and manually
ventilate with a bag-valve mask, while assessing the cause of the alarm.
This ensures patient safety while troubleshooting the issue.
5. Which finding is an early sign of increased intracranial pressure (ICP)?
A) Widening pulse pressure
B) Bradycardia
C) Ipsilateral pupil dilation
D) Decreased level of consciousness
Answer: D) Decreased level of consciousness
Rationale: A change in the level of consciousness (LOC) is the earliest
and most sensitive indicator of increased ICP. As ICP rises, cerebral
, 4|Page
perfusion decreases, affecting the reticular activating system. Cushing's
triad (widening pulse pressure, bradycardia, irregular respirations) is a
late and ominous sign. Pupil changes indicate compression of cranial
nerve III, which is also a later sign.
6. A patient with a history of chronic kidney disease has a serum
potassium level of 6.8 mEq/L. Which ECG change would the nurse
expect to see?
A) U waves
B) Widened QRS complex
C) Flattened T waves
D) Prominent U waves
Answer: B) Widened QRS complex
Rationale: Hyperkalemia (elevated potassium) affects cardiac
conduction. Early changes include peaked, tented T waves. As
potassium levels rise further, the QRS complex widens, the PR interval
lengthens, and the P wave may flatten or disappear, leading to a sine
wave pattern and ventricular fibrillation. U waves and flattened T waves
are more characteristic of hypokalemia.
7. What is the primary goal of therapeutic hypothermia post-cardiac
arrest?
A) Reduce myocardial oxygen demand
B) Prevent seizures
