A client in the coronary care unit is receiving a diltiazem infusion for atrial fibrillation. The nurse observes on the cardiac monitor that the client's heart rate has converted to sinus bradycardia at a rate of 50 beats/minute. Which nursing action should be performed first?

Apply transcutaneous pacemaker pads.

Place the client in Trendelenberg position.

Call the doctor for an order to decrease the infusion rate.

Administer a dose of atropine.

Answer and Explanation

The Correct Answer is C

A. Apply transcutaneous pacemaker pads: While this is a potential intervention for symptomatic or severe bradycardia unresponsive to medications, it is premature as a first step in this scenario. The client is stable with a heart rate of 50 bpm and no mention of hemodynamic compromise.

B. Place the client in Trendelenburg position: This position is used to improve venous return in hypotensive patients, but there is no evidence of hypotension or poor perfusion. It is not an appropriate response to mild bradycardia in this context.

C. Call the doctor for an order to decrease the infusion rate: Diltiazem is a calcium channel blocker that slows AV node conduction, potentially causing bradycardia. Since the heart rate has dropped to 50 bpm, the most appropriate first action is to contact the provider to adjust the infusion rate, which may be too high for the client’s current rhythm.

D. Administer a dose of atropine: Atropine is used for symptomatic bradycardia. If the client is asymptomatic and the bradycardia is mild and medication-induced, adjusting or discontinuing the offending agent should be attempted before administering atropine.

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Correct Answer is A

Explanation

A. vegetative embolization to the kidneys: Infective endocarditis is an infection of the heart valves or the endocardium. Vegetations (clumps of bacteria, fibrin, and platelets) can form on the damaged heart structures. These vegetations are fragile and can break off, forming emboli that travel through the bloodstream to various organs. Embolization to the kidneys can cause renal infarction, leading to sharp flank pain due to ischemia or infarction of kidney tissue and hematuria.

B. hemolysis of red blood cells by hemolytic microorganisms: While some bacteria can cause hemolysis, it is not typically associated with localized flank pain. Hemolysis would present with systemic signs such as jaundice, fatigue, and anemia, not acute flank pain and visible hematuria.

C. septicemia resulting in decreased glomerular blood flow: Septicemia may impair renal perfusion over time but would more likely lead to generalized signs of acute kidney injury, such as oliguria and rising creatinine levels, rather than acute flank pain and hematuria.

D. bacterial infection in the kidneys: Acute pyelonephritis can cause flank pain and hematuria, but in the context of infective endocarditis, embolic events are a more likely and urgent explanation for new-onset symptoms, particularly sharp localized pain.

A. Breast cancer treated with chemotherapy and radiation B. Periodontal disease and gum surgery three months ago C. Type II diabetic for ten years D. Myocardial infarction one year ago

Correct Answer is B

Explanation

A. Breast cancer treated with chemotherapy and radiation: While cancer and its treatments can suppress the immune system, they are not direct causes of infectious endocarditis. The condition is more closely related to bacteremia and structural heart damage.

B. Periodontal disease and gum surgery three months ago: Periodontal disease involves chronic bacterial infection of the gums and supporting structures of the teeth, this transient bacteremia can lead to infectious endocarditis. Oral infections and invasive dental procedures can introduce bacteria into the bloodstream, particularly streptococci, which can colonize damaged heart valves and cause infectious endocarditis.

C. Type II diabetic for ten years: Diabetes increases the risk of infection generally, but it is not a specific cause of endocarditis. Without a portal of entry or bacteremia, the condition alone is not strongly associated with endocarditis.

D. Myocardial infarction one year ago: A prior MI may result in reduced cardiac function but does not directly lead to infectious endocarditis unless it has resulted in damaged valves or introduced infection, which is not indicated here.

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WBC	8.5
Hemoglobin	17g/dL
Hematocrit	54%
BUN	28mg/dL
Creatinine	1.1 mg/dL
Potassium	4.9 mEq/L

A client in the coronary care unit is receiving a diltiazem infusion for atrial fibrillation. The nurse observes on the cardiac monitor that the client's heart rate has converted to sinus bradycardia at a rate of 50 beats/minute. Which nursing action should be performed first?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is B

Explanation

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