What are common causes of ventricular fibrillation?

Prepare for the Telemetry Course Test. Study with quizzes and multiple-choice questions; each question includes hints and explanations. Get ready to excel in your exam!

The correct choice identifies the common causes of ventricular fibrillation as electrolyte imbalances, electric shock, and severe hypothermia. Each of these factors can disrupt the heart's normal electrical activity, leading to chaotic and ineffective contractions.

Electrolyte imbalances, such as those involving potassium, calcium, or magnesium, play a crucial role in maintaining the electrical stability of the heart. When these electrolyte levels are disturbed, it can create conditions favorable to the development of arrhythmias, including ventricular fibrillation.

Electric shock, such as from a lightning strike or a high-voltage incident, can cause immediate and severe disturbances in the heart's electrical system, provoking ventricular fibrillation. This results from the electrical energy overwhelming the heart's usual conduction pathways.

Severe hypothermia affects the body’s metabolism and can lead to a critical slowing down of cardiac function. The low body temperature can impair the heart's electrical properties and increase the likelihood of developing arrhythmias, including ventricular fibrillation.

The other choices involve conditions that do not directly lead to the chaotic activity of ventricular fibrillation. For instance, heart rate irregularities, angina, deep vein thrombosis, hypertension, chronic obstructive pulmonary disease, pneumonia, cerebral vascular accidents, diabetes mellitus, and