CEP Cardiac Care & Emergency Pharmacology

Question 1

What is the first-line treatment for a patient experiencing ventricular fibrillation?

Accepted Answer

Delivering unsynchronized defibrillation shock

Answer

The first-line treatment for a patient experiencing ventricular fibrillation (VF) is immediate unsynchronized defibrillation. VF is a chaotic electrical activity in the ventricles that results in no effective cardiac output, leading to cardiac arrest. Delivering an electrical shock is the definitive intervention to terminate VF and reset the heart's electrical activity, aiming to restore a perfusing rhythm and improve survival chances.

Question 2

Which medication is commonly used to treat bradycardia in the prehospital setting?

Accepted Answer

Atropine

Answer

Atropine is the medication commonly used to treat symptomatic bradycardia (slow heart rate) in the prehospital setting. It acts as an anticholinergic agent, blocking the effects of the vagus nerve, which normally slows the heart. By doing so, atropine increases the heart rate and improves cardiac output, helping to alleviate symptoms such as hypotension or altered mental status caused by the slow heart rate.

Question 3

What is the primary action of epinephrine during cardiac arrest?

Accepted Answer

Increases perfusion pressure

Answer

The primary action of epinephrine during cardiac arrest is to increase perfusion pressure, particularly coronary and cerebral perfusion. As a potent vasoconstrictor and cardiac stimulant, epinephrine increases systemic vascular resistance, which elevates aortic diastolic pressure. This improved blood flow to the heart and brain is crucial for increasing the chances of successful resuscitation and achieving a return of spontaneous circulation (ROSC).

Question 4

Which rhythm is most appropriate for synchronized cardioversion?

Accepted Answer

Unstable SVT

Answer

Unstable supraventricular tachycardia (SVT) is the rhythm most appropriate for synchronized cardioversion. Synchronized cardioversion delivers an electrical shock that is precisely timed with the R-wave of the patient's QRS complex. This synchronization is crucial to avoid delivering a shock during the vulnerable T-wave, which could induce ventricular fibrillation, and is used to convert unstable tachyarrhythmias with a pulse back to a normal rhythm.

Question 5

What is the goal of administering nitroglycerin during chest pain?

Accepted Answer

To decrease preload and myocardial oxygen demand

Answer

The goal of administering nitroglycerin during chest pain is to decrease preload and myocardial oxygen demand. Nitroglycerin is a vasodilator that primarily acts on venous capacitance vessels, causing venodilation. This reduces the amount of blood returning to the heart (preload), which in turn decreases the heart's workload and its demand for oxygen. By reducing myocardial oxygen demand, nitroglycerin helps alleviate chest pain caused by myocardial ischemia (angina).

(CEP) Certified Emergency Paramedic Practice Test

(CEP) Certified Emergency Paramedic Practice Test

CEP Cardiac Care & Emergency Pharmacology