Which of the following is NOT an appropriate indication for the use of dopamine in critical care?

Hypotension due to neurogenic shock

Hypotension due to septic shock

Hypotension due to hypovolemic shock

Hypotension due to cardiogenic shock

Answer and Explanation

The Correct Answer is C

C. its use in hypovolemic shock is generally not appropriate because the primary treatment for hypovolemic shock is fluid resuscitation to address the volume loss.

A. Dopamine is often used in neurogenic shock to increase systemic vascular resistance and improve blood pressure. Therefore, dopamine is an appropriate choice for the management of hypotension due to neurogenic shock.

B. Dopamine is commonly used in septic shock to improve cardiac output and systemic vascular resistance. It helps to support blood pressure and perfusion in septic shock patients.

D. It is indicated for cardiogenic shock as it increases cardiac contractility.

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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.

A. Hypotension B. Nausea C. Decreased level of consciousness D. Severe dyspnea E. Headache

Correct Answer is ["A","C","D","E"]

Explanation

A. Hypotension may result from decreased cardiac output due to hypoxemia and acidosis or as a compensatory response to hypoxia-induced vasodilation. Therefore, monitoring for hypotension is important in ARF.

C. Hypoxemia can impair cerebral perfusion and neuronal function, leading to alterations in mental status ranging from confusion to coma. Decreased level of consciousness is a concerning sign of inadequate oxygenation and should be closely monitored in patients with ARF.

D. Dyspnea, or difficulty breathing, is a hallmark symptom of respiratory failure. In ARF, the respiratory system's inability to adequately oxygenate or ventilate leads to increased work of breathing and feelings of breathlessness. Patients with ARF often experience severe dyspnea as they struggle to maintain adequate gas exchange.

E. Headache is not typically considered a primary manifestation of ARF. However, it may occur as a secondary symptom due to factors such as hypoxemia, hypercapnia, or acidosis. Patients with ARF may experience headache as a result of cerebral vasodilation in response to hypoxia or as a symptom of underlying conditions contributing to respiratory failure.

B. Nausea is not a typical manifestation of ARF itself. However, it may occur as a secondary symptom due to factors such as hypoxia, acidosis, or medications administered for the management of ARF. While nausea may be present, it is not a direct result of respiratory failure.

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Which of the following is NOT an appropriate indication for the use of dopamine in critical care?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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

A nurse is caring for a client who has an acute respiratory failure (ARF). The nurse should monitor the client for which of the following manifestations of this condition? (Select all that apply.)

Correct Answer is ["A","C","D","E"]

Explanation

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