The nurse identifies which of the following as the most common cause of a myocardial infarction?

Atherosclerosis

Obesity

Hypertension

Diabetes Mellitus type 2

Answer and Explanation

The Correct Answer is A

A. Atherosclerosis is correct. It is the primary cause of myocardial infarction (MI) due to the narrowing and eventual blockage of coronary arteries by plaque buildup, leading to reduced oxygen supply to the heart muscle.
B. Obesity is a risk factor for MI but is not the direct cause. It contributes to conditions like hypertension, diabetes, and atherosclerosis, which increase MI risk.
C. Hypertension increases the risk of MI by damaging blood vessels over time, but it is not the most common direct cause.
D. Diabetes Mellitus type 2 is a risk factor because it contributes to vascular damage and atherosclerosis, but it is not the primary cause of an MI.

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Correct Answer is ["A","B","C","E","F"]

Explanation

A. Vital signs . The client has tachycardia (HR 138/min) and tachypnea (RR 28/min), which may indicate worsening heart failure or fluid overload. The low blood pressure (96/75 mmHg) is also concerning, especially with rapid ventricular response (RVR).
B. Respiratory assessment . The presence of a frequent cough with pink-tinged sputum suggests pulmonary congestion or pulmonary edema, a sign of worsening left-sided heart failure.
C. Renal function . The BUN of 28 mg/dL (elevated) and creatinine of 1.5 mg/dL (borderline high) suggest possible kidney impairment due to decreased cardiac output and poor perfusion.
D. Cardiac enzymes . The client denies chest pain or discomfort, so cardiac enzymes are not the immediate priority.
E. BNP (B-type natriuretic peptide) . BNP is a key marker of heart failure severity and helps guide treatment decisions.
F. ECG results . The atrial fibrillation with RVR increases the risk of hemodynamic instability and potential thromboembolic events, requiring urgent intervention.
G. Neurologic status . The client is alert, oriented, and following commands, so no immediate neurologic concerns are present.

Correct Answer is ["120"]

Explanation

 Convert pounds to kilograms:

176 pounds / 2.2 pounds/kg = 80 kg

 Calculate the enoxaparin dose:

80 kg 1.5 mg/kg = 120 mg

 Round to the nearest whole number:

120 mg

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The nurse identifies which of the following as the most common cause of a myocardial infarction?

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Naxlex Comprehensive Predictor Exams

A nurse is admitting a client who has a history of heart failure. Exhibits Check the 5 findings that require immediate follow-up.

Correct Answer is ["A","B","C","E","F"]

Explanation

A nurse is caring for a client who has a pulmonary embolism and has a new order for enoxaparin 1.5 mg/kg/dose to be administered subcutaneously every 12 hours. The client weighs 176 pounds. How many mg should the nurse administer per dose? (Round to the nearest whole number)

Correct Answer is ["120"]

Explanation

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