A nurse is caring for a client in a critical care unit who suffered a knife wound to the chest. The nurse suspects the client is developing cardiac tamponade. Which of the following assessment findings should the nurse identify as supporting this suspicion?

Bradycardia.

Muffled heart sounds

Flattened neck veins.

Sudden lethargy.

Answer and Explanation

The Correct Answer is B

B. Muffled heart sounds, often described as distant or indistinct, are classic findings in cardiac tamponade. The accumulation of fluid in the pericardial sac dampens the transmission of sound from the heart to the chest wall, resulting in muffled heart sounds on auscultation. This finding is known as Beck's triad, which also includes hypotension and jugular venous distention.

A. Bradycardia is not a typical finding in cardiac tamponade. In fact, tachycardia is more commonly observed due to the compensatory response to decreased cardiac output and decreased stroke volume. The sympathetic nervous system is activated, leading to an increase in heart rate as a compensatory mechanism to maintain cardiac output.

C. Flattened neck veins are not consistent with cardiac tamponade. In cardiac tamponade, jugular venous distention (JVD) is typically observed due to increased venous pressure resulting from impaired right ventricular filling. The presence of JVD is an important clinical finding in cardiac tamponade and can help differentiate it from other causes of shock.

D. Sudden lethargy can occur in various medical emergencies, including cardiac tamponade, but it is not a specific or diagnostic finding for this condition. In cardiac tamponade, symptoms may include dyspnea, chest pain, hypotension, and signs of decreased cardiac output such as cool extremities and altered mental status. However, sudden lethargy alone may not be specific enough to confirm cardiac tamponade.

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Correct Answer is A

Explanation

A. Atropine is commonly used in the treatment of symptomatic bradycardia. It works by blocking vagal stimulation, leading to increased heart rate. Atropine is typically administered in doses of 0.5 to 1 mg every 3 to 5 minutes, up to a total dose of 3 mg, in patients with symptomatic bradycardia.

B. Sodium bicarbonate is not indicated for symptomatic bradycardia. It is primarily used in the management of metabolic acidosis, hyperkalemia, and certain drug overdoses. While sodium bicarbonate may be administered in specific situations during cardiopulmonary resuscitation (CPR), it is not the first-line treatment for symptomatic bradycardia.

C. Magnesium sulfate is used in the treatment of certain arrhythmias, such as torsades de pointes and refractory ventricular fibrillation or ventricular tachycardia associated with hypomagnesemia. However, it is not the first-line treatment for symptomatic bradycardia. Magnesium sulfate may be considered if there are specific indications such as torsades de pointes or suspected hypomagnesemia.

D. Epinephrine is commonly used in advanced cardiac life support (ACLS) protocols for cardiac arrest. It is not the first-line treatment for symptomatic bradycardia. Epinephrine is primarily used during CPR to improve coronary and cerebral perfusion by increasing systemic vascular resistance and heart rate.

However, in the case of symptomatic bradycardia, atropine is typically preferred as the initial medication.

A. Intracranial pressure B. Renal function C. Spinal cord perfusion D. Hemodynamic status

Correct Answer is D

Explanation

D. A pulmonary artery catheter is used to monitor hemodynamic status. It provides valuable information about cardiac function, preload, afterload, and cardiac output. By measuring parameters such as pulmonary artery pressure, pulmonary artery wedge pressure, and central venous pressure, a pulmonary artery catheter helps assess the effectiveness of cardiac function and guide management in critically ill patients, especially those with conditions such as heart failure, shock, or pulmonary hypertension.

A. A pulmonary artery catheter, also known as a Swan-Ganz catheter, is not used to monitor intracranial pressure. Instead, it is primarily used to assess hemodynamic status and cardiac function by measuring parameters such as pulmonary artery pressure, pulmonary artery wedge pressure, central venous pressure, and cardiac output.

B. A pulmonary artery catheter is not used to directly monitor renal function. While changes in hemodynamic status can impact renal perfusion and function, the primary purpose of a pulmonary artery catheter is to assess cardiac function and hemodynamics, rather than renal function.

C. A pulmonary artery catheter is not used to monitor spinal cord perfusion. Although alterations in hemodynamic status can affect spinal cord perfusion indirectly, the main purpose of a pulmonary artery catheter is to evaluate cardiac function and hemodynamics.

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A nurse is caring for a client in a critical care unit who suffered a knife wound to the chest. The nurse suspects the client is developing cardiac tamponade. Which of the following assessment findings should the nurse identify as supporting this suspicion?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has a cardiopulmonary arrest. The nurse anticipates the emergency response team will administer which of the following medications if the client's restored rhythm is symptomatic bradycardia?

Correct Answer is A

Explanation

A nurse is preparing a client for transfer to the ICU for placement of a pulmonary artery catheter. The nurse should explain to the client that this catheter is used to monitor which of the following conditions?

Correct Answer is D

Explanation

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