The QRS of an ECG Falls on a Dark Vertical

question 29

Multiple Choice

The QRS of an ECG falls on a dark vertical line of the ECG paper. Subsequent QRS complexes fall on every other dark line (10 mm apart) . What is the ventricular rate?

• A) 300/min
• B) 200/min
• C) 150/min
• D) 100/min

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Definitions:

Sympathetic Impulses

Nerve impulses that stimulate the body's fight or flight response, part of the autonomic nervous system.

Blood Pressure

The force exerted by circulating blood upon the walls of blood vessels, a critical indicator of cardiovascular health.

Carotid Baroreceptors

Sensory nerve endings located in the carotid artery that detect changes in blood pressure and help regulate it.

Glossopharyngeal Nerve

The ninth cranial nerve, responsible for sensory and motor functions in the throat and back of the tongue.