Which of the following medications is commonly used for afterload reduction in critical care?

Nitroglycerin

Metoprolol

Furosemide

Epinephrine

Answer and Explanation

The Correct Answer is A

A. Nitroglycerin is a vasodilator commonly used to reduce preload and afterload in critical care settings. By dilating blood vessels, nitroglycerin decreases systemic vascular resistance (afterload), which reduces the workload on the heart and improves cardiac output. It is often used to manage conditions such as acute heart failure, hypertensive emergencies, and acute coronary syndromes.

B. Metoprolol is a beta-blocker that primarily acts to reduce heart rate and myocardial contractility. While it can indirectly reduce afterload by lowering blood pressure, its primary mechanism of action is not targeted at afterload reduction. Metoprolol is commonly used in critical care for various indications, including hypertension, myocardial infarction, and heart failure, but it is not primarily used for afterload reduction.

C. Furosemide is a loop diuretic commonly used to manage volume overload and reduce preload in critical care settings. By promoting diuresis, furosemide decreases circulating blood volume, venous return, and preload, which indirectly reduces afterload. However, its primary mechanism of action is not targeted at afterload reduction but rather at reducing volume overload.

D. Epinephrine is a potent sympathomimetic agent that acts on alpha and beta-adrenergic receptors. While it can increase systemic vascular resistance (afterload) at higher doses due to its alpha-adrenergic effects, it is not commonly used for afterload reduction in critical care settings. Epinephrine is primarily used as a vasopressor to increase blood pressure and cardiac output in patients with shock or cardiac arrest.

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Correct Answer is []

Explanation

In respiratory acidosis, there is an accumulation of carbon dioxide (CO2) in the blood due to inadequate ventilation, leading to an increase in the partial pressure of arterial carbon dioxide (PaCO2) and a decrease in pH.

This is often caused by conditions that impair ventilation, such as airway obstruction, respiratory muscle weakness, lung diseases (e.g., chronic obstructive pulmonary disease, pneumonia), or central nervous system depression (e.g., drug overdose, head injury).

Management of respiratory acidosis include bronchodilators, sodium bicarbonate, adequate ventilation, and treatment of underlying causes.

A. The rapid response team will begin with defibrillation and then progress to cardiopulmonary resuscitation if needed B. It would be best if you waited outside, as you won't want to see cardiopulmonary resuscitation performed on your loved one C. As long as the team is doing cardiopulmonary resuscitation, your loved on has a normal blood flow throughout their body D. The rapid response team cannot defibrillate your loved on because they are in systole; they are continuing cardiopulmonary resuscitation.

Correct Answer is D

Explanation

D. Asystole represents the absence of electrical activity in the heart and is not amenable to defibrillation. Therefore, the RRT would continue cardiopulmonary resuscitation (CPR) with chest compressions and may administer medications or other interventions as indicated. This statement provides accurate information to the family about the patient's condition and the actions being taken by the RRT.

A. Defibrillation is not indicated for asystole. Asystole represents a flatline on the cardiac monitor, indicating the absence of electrical activity in the heart. Defibrillation is only effective for certain types of cardiac rhythms, such as ventricular fibrillation or pulseless ventricular tachycardia. Therefore, the RRT would not use defibrillation for a patient in asystole.

B. It does not provide the family with information about the patient's condition or the actions being taken by the RRT. Moreover, excluding the family from the patient's care may cause additional distress and prevent them from being present to support their loved one during a critical situation.

C. Cardiopulmonary resuscitation (CPR) is performed to maintain blood flow and oxygenation to vital organs during cardiac arrest. However, it does not restore normal blood flow or circulation. The goal of CPR is to provide temporary support until advanced interventions can be initiated or until return of spontaneous circulation (ROSC) is achieved.

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Which of the following medications is commonly used for afterload reduction in critical care?

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Naxlex Comprehensive Predictor Exams

Correct Answer is []

Explanation

The rapid response team (RRT) is caring for a client with asystole. Which nursing statement made to the client's family about the actions of the RRT is appropriate?

Correct Answer is D

Explanation

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