A patient who has neurogenic shock is receiving a dobutamine infusion through a right forearm IV. Which assessment finding obtained by the nurse indicates a need for immediate action?

The patient's IV infusion site is cool and pale.

The patient's extremities are warm and dry.

The patient's urine output is 28 ml, over the past hour.

The patient's heart rate is 58 beats/min.

Answer and Explanation

The Correct Answer is A

A. In a patient receiving a dobutamine infusion, which is a vasopressor medication used to increase cardiac output, a cool and pale IV infusion site could indicate inadequate perfusion despite treatment. This finding requires immediate action to assess the patient's hemodynamic status and ensure adequate tissue perfusion.

B. Warm and dry extremities are typically indicative of adequate tissue perfusion. In neurogenic shock, vasodilation can lead to warm extremities due to decreased systemic vascular resistance. While this finding may be expected in neurogenic shock, it does not necessarily indicate a need for immediate action if other parameters are stable.

C. Decreased urine output can be indicative of inadequate renal perfusion and impaired kidney function. In a patient with neurogenic shock, maintaining adequate renal perfusion is crucial to prevent acute kidney injury. While decreased urine output warrants close monitoring and intervention, it may not require immediate action unless other signs of worsening perfusion are present.

D. A heart rate of 58 beats/min may be within the normal range for some patients, especially those who are receiving dobutamine, which can have a chronotropic effect. However, in the context of neurogenic shock, bradycardia may indicate a compensatory response to hypotension and decreased tissue perfusion. While bradycardia alone may not always require immediate action, it should prompt further assessment of the patient's hemodynamic status and response to treatment.

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Correct Answer is D

Explanation

D. Myocardial infarction (heart attack) is a common cause of cardiogenic shock. In myocardial infarction, part of the heart muscle becomes ischemic or necrotic due to occlusion of a coronary artery. This leads to impaired cardiac function and reduced cardiac output, resulting in cardiogenic shock. Prompt recognition and treatment of myocardial infarction are crucial to prevent or manage cardiogenic shock.
A. Anaphylaxis is a severe allergic reaction that can lead to systemic vasodilation and distributive shock, but it is not a common cause of cardiogenic shock. In anaphylaxis, the primary mechanism of shock is typically related to widespread vasodilation and increased vascular permeability rather than impaired cardiac function.
B. Hypovolemic shock occurs due to a decrease in intravascular volume, leading to inadequate tissue perfusion. It is not a common cause of cardiogenic shock, as the underlying mechanism is different. In hypovolemic shock, the primary issue is the loss of circulating blood volume, whereas cardiogenic shock involves impaired cardiac function.
C. Pulmonary embolism can lead to acute right heart strain or failure, which may result in hemodynamic instability and shock. However, pulmonary embolism typically causes obstructive shock rather than cardiogenic shock. Obstructive shock occurs when blood flow is obstructed, such as by a pulmonary embolism, leading to reduced cardiac output.

A. QRS complex B. QT interval C. ST segment D. PR interval

Correct Answer is B

Explanation

B. The QT interval represents ventricular depolarization and repolarization. It starts at the beginning of the QRS complex and ends at the end of the T wave. The QT interval reflects the total time it takes for both ventricular depolarization and repolarization to occur. Prolongation of the QT interval can be associated with an increased risk of arrhythmias, including torsades de pointes.

A. The QRS complex represents ventricular depolarization, which is the electrical activation of the ventricles. The duration of the QRS complex provides information about the time it takes for ventricular depolarization to occur. A prolonged QRS complex can indicate abnormalities in ventricular conduction, such as bundle branch blocks or ventricular hypertrophy.

C. The ST segment represents the early part of ventricular repolarization. It starts at the end of the QRS complex and ends at the beginning of the T wave. Changes in the ST segment, such as elevation or depression, can indicate myocardial ischemia or injury.

D. The PR interval represents the time it takes for the electrical impulse to travel from the atria to the ventricles. It includes atrial depolarization, atrial contraction, and the delay at the atrioventricular node. The PR interval does not specifically provide information about ventricular depolarization and repolarization.

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A patient who has neurogenic shock is receiving a dobutamine infusion through a right forearm IV. Which assessment finding obtained by the nurse indicates a need for immediate action?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which of the following is a common cause of cardiogenic shock?

Correct Answer is D

Explanation

A nurse is interpreting a client's ECG strip. Which of the following components of the ECG should the nurse examine to determine the time it takes for ventricular depolarization and repolarization?

Correct Answer is B

Explanation

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