An client being assessed in the emergency room is anxious about their health status. The ECG rhythm strip shows a heart rate of 120 beats/min. Characteristics of a sinus tachycardia rhythm are

Atrial rhythm regular, ventricular rhythm irregular

P:QRS ratio of 1:1

P:QRS ratio of 2:1

Ventricular and atrial rhythm are irregular

Answer and Explanation

The Correct Answer is B

A. An atrial rhythm regular and ventricular rhythm irregular would suggest an arrhythmia such as atrial fibrillation or flutter with variable conduction—not sinus tachycardia.
B. In sinus tachycardia, the rhythm is regular, the P:QRS ratio is 1:1, meaning each P wave is followed by a QRS complex, and the origin is from the sinus node.
C. A 2:1 P:QRS ratio is characteristic of certain types of heart block or atrial flutter—not sinus tachycardia.
D. Irregular ventricular and atrial rhythms are seen in atrial fibrillation or other irregular arrhythmias, not sinus tachycardia.

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Correct Answer is C

Explanation

A. Fluid overload is associated with elevated CVP, not low CVP.
B. Left ventricular failure may eventually cause elevated pulmonary pressures and increased CVP, but a low CVP does not indicate left-sided failure.
C. Hypovolemia (low circulating blood volume) leads to a decreased central venous pressure (CVP) because there is less venous return to the heart. This is the most accurate interpretation of a low CVP reading.
D. An intracardiac shunt may affect circulation dynamics but is not a typical cause of isolated low CVP.

A. Blood pressure 84/50 mm Hg B. Petechiae C. Confusion D. Anuria

Correct Answer is C

Explanation

A. A blood pressure of 84/50 mm Hg is more consistent with the progressive stage of shock, where compensation is failing.
B. Petechiae may be seen in disseminated intravascular coagulation (DIC), a complication of severe shock, typically not in the compensatory stage.
C. Confusion is an early sign of impaired cerebral perfusion, which can occur in the compensatory stage of shock. It reflects the body’s efforts to maintain perfusion to vital organs despite declining cardiac output.
D. Anuria (no urine output) is a late finding, typically seen in the irreversible stage of shock, indicating complete renal failure.

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An client being assessed in the emergency room is anxious about their health status. The ECG rhythm strip shows a heart rate of 120 beats/min. Characteristics of a sinus tachycardia rhythm are

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Naxlex Comprehensive Predictor Exams

A nurse is evaluating the central venous pressure (CVP) of a client who has sustained multiple traumas. Which of the following interpretations of a low CVP pressure should the nurse make?

Correct Answer is C

Explanation

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Correct Answer is C

Explanation

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