A 60-year-old female had a myocardial infarction. She was brought to the hospital 30 minutes later. She survived, but now the nurse is providing care for impaired ventricular function because

the cells of the myocardium become hypertrophic.

the resulting hypoxia leads to ischemic injury and myocardial cell death.

there is a temporary alteration in electrolyte balance that can be corrected.

there is too much pressure on the heart and the ventricles begin to dysfunction.

Answer and Explanation

The Correct Answer is B

Choice A reason: The cells of the myocardium become hypertrophic in response to increased workload or pressure, not as a result of myocardial infarction. Hypertrophy is an adaptive mechanism that can lead to impaired ventricular function over time.

Choice B reason: The resulting hypoxia leads to ischemic injury and myocardial cell death. This is the main cause of impaired ventricular function after a myocardial infarction. The loss of viable myocardial tissue reduces the contractility and pumping ability of the heart.

Choice C reason: There is a temporary alteration in electrolyte balance that can be corrected. This is not the primary cause of impaired ventricular function after a myocardial infarction. Electrolyte imbalance can occur due to fluid loss, renal impairment, or medication side effects, but it can be managed with appropriate interventions.

Choice D reason: There is too much pressure on the heart and the ventricles begin to dysfunction. This is not the direct cause of impaired ventricular function after a myocardial infarction. Increased pressure on the heart can result from hypertension, valvular disease, or pulmonary embolism, but it is not related to myocardial ischemia or necrosis.

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Correct Answer is D

Explanation

Choice A reason: Potassium is not restricted in the management of high blood pressure. In fact, potassium can help lower blood pressure by balancing the effects of sodium and relaxing the blood vessel walls.

Choice B reason: Magnesium is not restricted in the management of high blood pressure. Magnesium can also help lower blood pressure by regulating the calcium channels and improving the endothelial function.

Choice C reason: Calcium is not restricted in the management of high blood pressure. Calcium can also help lower blood pressure by inhibiting the renin-angiotensin system and reducing the vascular resistance.

Choice D reason: Sodium is restricted in the management of high blood pressure. Sodium can increase blood pressure by retaining water in the body and increasing the blood volume and pressure.

A. Acute allergies B. Nasal congestion C. Dyspnea on exertion D. Acute bronchospasm

Correct Answer is D

Explanation

Choice A reason: Albuterol is not used to treat acute allergies. It is a bronchodilator that relaxes the smooth muscles of the airways and improves airflow. Antihistamines are the drugs of choice for acute allergies.

Choice B reason: Albuterol is not used to treat nasal congestion. It is a bronchodilator that acts on the lungs, not the nose. Decongestants are the drugs of choice for nasal congestion.

Choice C reason: Albuterol is not used to treat dyspnea on exertion. It is a bronchodilator that is used for acute or chronic respiratory conditions, such as asthma or chronic obstructive pulmonary disease (COPD). Dyspnea on exertion is a symptom of various cardiac or pulmonary disorders that require further evaluation and treatment.

Choice D reason: Albuterol is used to treat acute bronchospasm. It is a bronchodilator that quickly relieves the symptoms of bronchoconstriction, such as wheezing, coughing, and shortness of breath. It is often prescribed as a rescue inhaler for patients with asthma or COPD.

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A 60-year-old female had a myocardial infarction. She was brought to the hospital 30 minutes later. She survived, but now the nurse is providing care for impaired ventricular function because

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Naxlex Comprehensive Predictor Exams

Restriction of which electrolyte is recommended in the management of high blood pressure?

Correct Answer is D

Explanation

What is albuterol (Proventil) used to treat?

Correct Answer is D

Explanation

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What is ejection fraction?

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