Which drainage tube is associated with an increased risk for hypokalemia?

The use of a nasogastric (NG) tube to suction can lead to an increased risk for hypokalemia due to the potential loss of potassium-rich gastric fluids. When suction is applied to an NG tube, it can remove not only the contents of the stomach but also electrolytes, including potassium. As gastric content is emptied, these essential electrolytes are lost, which can disrupt the body's normal balance and lead to hypokalemia.

Hypokalemia can have several adverse effects on the body, including muscle weakness, fatigue, and potentially dangerous cardiac arrhythmias. As the body attempts to maintain potassium homeostasis while the NG tube continues to suction, it may deplete potassium levels further, especially if the patient is already at risk for electrolyte imbalances due to conditions such as vomiting or certain medications.

In contrast, the other options provided do not typically contribute to hypokalemia in the same manner as an NG tube to suction. For example, nephrostomy tubes and indwelling catheters primarily deal with urinary output rather than gastrointestinal contents, and chest tubes generally focus on pleural drainage rather than electrolyte loss.