A client with aortic regurgitation is being transferred from the critical care unit to the step-down unit. The nurse receiving the patient in the step-down unit is aware that aortic regurgitation causes:

Blood to flow back from the left atrium to the left ventricle

Blood to flow back from the aorta to the left ventricle

Obstruction of blood from the left atrium to the left ventricle

Obstruction of blood flow from the left ventricle

Answer and Explanation

The Correct Answer is B

A. Blood flowing back from the left atrium to the left ventricle describes mitral regurgitation, not aortic regurgitation.
B. Aortic regurgitation involves the backflow of blood from the aorta into the left ventricle during diastole due to an incompetent aortic valve. This leads to volume overload in the left ventricle.
C. Obstruction of blood from the left atrium to the left ventricle occurs in mitral stenosis, not aortic regurgitation.
D. Obstruction of blood flow from the left ventricle is characteristic of aortic stenosis, not aortic regurgitation.

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Correct Answer is C

Explanation

A. Sinus bradycardia is characterized by a heart rate less than 60 beats/min, but in this case the rate is exactly 60, which is normal lower limit.
B. First degree heart block involves a prolonged PR interval (>0.20 seconds); here, the PR interval is normal (0.16 seconds).
C. Normal sinus rhythm has regular P waves and QRS complexes, a normal PR interval (0.12–0.20 seconds), and a heart rate between 60–100 beats/min.
D. Sick sinus syndrome is characterized by irregular rhythms and abnormal sinus node function, which is not indicated here.

A. Increased cardiac output and improved tissue perfusion B. Restored fluid balance and resolution of hypovolemia C. Worsening organ dysfunction and failure D. Decreased heart rate and improved blood pressure

Correct Answer is C

Explanation

A. In the refractory stage, cardiac output is decreased and tissue perfusion is severely impaired, not improved.
B. Fluid balance is not restored during the refractory stage; instead, hypovolemia worsens.
C. The refractory stage is characterized by irreversible damage with worsening organ dysfunction and failure despite interventions.
D. Heart rate usually increases initially, and blood pressure typically decreases; decreased heart rate and improved blood pressure are not features of this stage.

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A client with aortic regurgitation is being transferred from the critical care unit to the step-down unit. The nurse receiving the patient in the step-down unit is aware that aortic regurgitation causes:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is assessing an ECG rhythm strip. The P waves and QRS complexes are regular. The PR interval is 0.16 second. The overall heart rate is 60 beats/min. The nurse assesses the cardiac rhythm as:

Correct Answer is C

Explanation

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Correct Answer is C

Explanation

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