A patient admitted with urosepsis and alcohol abuse had three seconds of PVCS and returns to sinus tachycardia. The patient's baseline heart rate ie 116/ min with a temperature of 101.1F, respirations of 22/min and blood pressure is 114/64. What should the nurse anticipate to do first?

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.

C Atrial fibrillation (AF) is characterized by rapid, irregular electrical activity in the atria, leading to an irregularly irregular ventricular response. AF often results in palpitations, fatigue, and dizziness due to the irregular heart rhythm and inefficient cardiac output. A significant pulse deficit may also be present due to the irregularity of the ventricular response compared to the atrial activity. Given the sudden onset of irregular palpitations, fatigue, dizziness, and a significant pulse deficit, atrial fibrillation is a likely dysrhythmia in this scenario.

A First-degree AV block is characterized by a prolonged PR interval on the electrocardiogram (ECG), indicating delayed conduction between the atria and ventricles. While it can indicate conduction system abnormalities, it typically does not result in rapid or irregular palpitations, fatigue, or dizziness.

Therefore, it is less likely to be the cause of the client's symptoms.

B Sinus tachycardia is characterized by a rapid heart rate originating from the sinus node, typically with a regular rhythm. While sinus tachycardia can cause palpitations and fatigue, it is less likely to result in an irregular heart rate with a significant pulse deficit. Therefore, it is less likely to be the cause of the client's symptoms.

D Sinus bradycardia is characterized by a slow heart rate originating from the sinus node. While sinus bradycardia can cause fatigue and dizziness, it typically does not result in a rapid or irregular heart rate. Therefore, it is less likely to be the cause of the client's symptoms.