A nurse in a critical care unit is caring for a client 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?

Flatened neck veins.

Bradycardia.

Sudden lethargy.

Muﬄed heart sounds.

Answer and Explanation

The Correct Answer is D

Choice A Reason: This choice is incorrect because ﬂatened neck veins are not a sign of cardiac tamponade. Cardiac tamponade is a condition in which ﬂuid accumulates in the pericardial sac that surrounds the heart, causing compression and impaired filling of the heart chambers. This leads to reduced cardiac output and hypotension. One of the manifestations of cardiac tamponade is distended neck veins due to increased venous pressure and impaired venous return.

Choice B Reason: This choice is incorrect because bradycardia is not a sign of cardiac tamponade. Bradycardia is a condition in which the heart rate is slower than normal (less than 60 beats per minute). It may be caused by various factors such as vagal stimulation, medication side eﬀects, hypothyroidism, or sinus node dysfunction. It may cause symptoms such as fatigue, dizziness, or syncope, but it does not indicate cardiac tamponade.

Choice C Reason: This choice is incorrect because sudden lethargy is not a specific sign of cardiac tamponade. Lethargy is a condition in which the person feels tired, sluggish, or drowsy. It may be caused by various factors such as sleep deprivation, depression, infection, anemia, or hypoglycemia. It may aﬀect the person's mental and physical performance, but it does not indicate cardiac tamponade.

Choice D Reason: This choice is correct because muﬄed heart sounds are a sign of cardiac tamponade. Muﬄed heart sounds are heart sounds that are fainter or softer than normal due to reduced transmission of sound waves through ﬂuid-filled pericardial sac. They may indicate that the heart function is compromised by cardiac tamponade and require immediate intervention such as pericardiocentesis (removal of ﬂuid from pericardial sac).

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Correct Answer is D

Explanation

Choice A Reason: This is incorrect because administering a nitrate antihypertensive is not the first action, as it may cause a rapid drop in blood pressure and worsen the client's condition.

Choice B Reason: This is incorrect because obtaining the client's heart rate is not the first action, as it does not address the cause of autonomic dysreﬂexia or relieve the symptoms.

Choice C Reason: This is incorrect because assessing the client for bladder distention is not the first action, as it may take time and delay the treatment of autonomic dysreﬂexia.

Choice D Reason: This is correct because placing the client in a high-Fowler's position is the first action, as it lowers the blood pressure by promoting venous return and reducing cardiac preload.

A. Oral hypoglycemic medications B. 0.9% sodium chloride IV bolus C. Dextrose 5% in 0.45% sodium chloride D. Glucocorticoid medications

Correct Answer is B

Explanation

Choice A Reason: This choice is incorrect because oral hypoglycemic medications are not eﬀective for treating DKA. Oral hypoglycemic medications are drugs that lower the blood glucose level by stimulating insulin secretion or increasing insulin sensitivity. They may be used for clients who have type 2 diabetes mellitus, but they do not work for clients who have type 1 diabetes mellitus or DKA.

Choice B Reason: This choice is correct because 0.9% sodium chloride IV bolus is an eﬀective treatment for DKA. 0.9% sodium chloride is an isotonic solution that contains the same concentration of solutes as blood plasma. It may be used for clients who have ﬂuid loss, dehydration, or shock. In DKA, the body breaks down fat for energy due to insulin deficiency or resistance, resulting in high levels of ketones and acids in the blood. This causes osmotic diuresis, dehydration, electrolyte imbalance, and metabolic acidosis. Therefore, administering 0.9% sodium chloride IV bolus can help to restore ﬂuid volume and correct electrolyte imbalance.

Choice C Reason: This choice is incorrect because dextrose 5% in 0.45% sodium chloride is not indicated for treating DKA. Dextrose 5% in 0.45% sodium chloride is a hypertonic solution that contains more solutes than blood plasma. It may be used for clients who have hyponatremia, cerebral edema, or malnutrition, but it can worsen hyperglycemia and osmotic diuresis in clients who have DKA.

Choice D Reason: This choice is incorrect because glucocorticoid medications are not indicated for treating DKA. Glucocorticoid medications are drugs that mimic the eﬀects of cortisol, a hormone that regulates stress response and inﬂammation. They may be used for clients who have allergic reactions, asthma, or autoimmune diseases, but they can increase blood glucose levels and inhibit insulin action in clients who have DKA.

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A nurse in a critical care unit is caring for a client 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?

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Correct Answer is D

Explanation

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Correct Answer is B

Explanation

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