The nurse is caring for a group of patients on the telemetry unit. Which patient should the nurse see first?

A patient with sinus bradycardia with a heart rate of 53 beats/minute

A patient with premature atrial contractions who is asymptomatic

A patient with atrial fibrillation reporting dyspnea

A patient with sinus tachycardia with a heart rate of 108 beats/minute

Answer and Explanation

The Correct Answer is C

A.   Sinus bradycardia may not require immediate intervention if the patient is asymptomatic and stable.
B.   Asymptomatic premature atrial contractions may not require immediate attention unless they are associated with significant symptoms or hemodynamic instability.
C.   Dyspnea in a patient with atrial fibrillation may indicate heart failure or other complications and requires prompt assessment and intervention.
D.   Sinus tachycardia may not require immediate intervention if the patient is asymptomatic and stable.

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Correct Answer is A

Explanation

A. The P wave on an ECG represents atrial depolarization, which occurs as the electrical impulse originates in the sinoatrial (SA) node and spreads through the atria, initiating atrial contraction.
B. Atrial repolarization typically occurs during the QRS complex and is not represented by the P wave. Atrial repolarization is masked by the larger QRS complex.
C. Ventricular depolarization is represented by the QRS complex on an ECG, as the electrical impulse spreads through the ventricles, leading to ventricular contraction.
D. Ventricular repolarization typically occurs during the T wave and is not represented by the P wave. Ventricular repolarization involves the recovery of ventricular muscle cells after contraction.

A. To reduce risk of infection B. To dry gastric secretions C. To promote postoperative healing D. To correct a clotting problem

Correct Answer is D

Explanation

A. While vitamin K plays a role in immune function, its administration prior to surgery primarily aims to correct potential clotting abnormalities rather than prevent infection.

B. Vitamin K does not affect gastric secretions. Its role in this context is unrelated to gastric function.
C. While vitamin K is involved in various physiological processes, its administration prior to surgery is primarily aimed at preventing bleeding complications by ensuring adequate clotting factor synthesis.
D. Vitamin K is essential for the synthesis of clotting factors in the liver.

Administering vitamin K prior to surgery helps ensure adequate levels of clotting factors, reducing the risk of bleeding during and after the procedure.

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The nurse is caring for a group of patients on the telemetry unit. Which patient should the nurse see first?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

After reviewing an electrocardiogram, the nurse determines that an electrical impulse originated in a patient's sinoatrial (SA) node with a P wave. What does this represent?

Correct Answer is A

Explanation

A patient is admitted to the hospital for a splenectomy. The nurse understands that the health-care provider prescribes an injection of vitamin K prior to surgery for which action?

Correct Answer is D

Explanation

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