Physical Therapy Assistant Practice Exam

Which condition is associated with exercise but often overlooked in preventing arrhythmias?

1. Hypokalemia

2. Dehydration

3. Hyperglycemia

4. Hypertension

The correct answer is: Hypokalemia

Hypokalemia, or low potassium levels in the blood, is a condition that can significantly affect cardiac function and is particularly relevant in the context of exercise. Potassium plays a crucial role in maintaining normal heart rhythm, and an imbalance can lead to arrhythmias, which are irregular heartbeats that can be dangerous. During intense physical activity, there can be a shift in electrolyte balance, including potassium. Sweating, which often occurs during exercise, can lead to the loss of potassium, especially if an individual is not replenishing electrolytes adequately. Athletes or individuals engaging in high-intensity workouts are particularly at risk if they consume a diet low in potassium or have other dietary restrictions. It is important to monitor potassium levels during exercise, especially in populations that may have predisposing factors like certain medications, dietary habits, or existing health conditions. Understanding these connections emphasizes the importance of electrolyte management in exercise plans to prevent potential complications, such as arrhythmias resulting from hypokalemia.