Emergency Medical Technician (EMT) Intermediate Practice Exam

Which of the following symptoms might indicate an epinephrine overdose?

1. Severe sweating

2. A sudden drop in blood pressure

3. Rapid heart rate

4. Increased salivation

The correct answer is: Rapid heart rate

Epinephrine is a medication commonly used in emergency situations, particularly for conditions such as anaphylactic shock. It works by stimulating the sympathetic nervous system, leading to various physiological responses. An overdose of epinephrine can lead to several significant symptoms due to its stimulating effects on the cardiovascular system. A rapid heart rate, or tachycardia, is a primary symptom of an epinephrine overdose. The drug elevates heart rate and force of contraction, which is beneficial in emergencies but can be harmful in excessive amounts. This response can lead to symptoms such as palpitations or a racing heartbeat, which would be considered an overdose effect. Understanding the context of the other symptoms helps clarify the situation. Severe sweating can sometimes occur as a stress response but is not specifically indicative of an epinephrine overdose. A sudden drop in blood pressure is more likely associated with an allergic reaction or anaphylaxis rather than an overdose. Increased salivation is generally not a recognized symptom of epinephrine overdose and would be more associated with other conditions or reactions. Recognizing the distinction between these symptoms is essential for EMTs when assessing patients and determining the need for interventions, as it informs subsequent treatment measures and the administration of further doses of epinephrine or other