A nurse is caring for four clients who have drainage tubes. The nurse should identify the client who has which of the following tubes as being at risk for hypokalemia?

A. A nephrostomy tube to a drainage bag:
A nephrostomy tube drains urine from the kidney to a drainage bag. While it's essential for urinary drainage, it doesn't lead to significant potassium loss, as potassium is primarily excreted through the urine.

B. An NG tube to suction:
An NG tube (Nasogastric tube) is inserted through the nose into the stomach. When connected to suction, it can remove stomach contents, including gastric acid and potassium. Excessive suctioning can lead to significant potassium loss, potentially causing hypokalemia.

C. An indwelling urinary catheter to gravity drainage:
An indwelling urinary catheter drains urine from the bladder into a drainage bag by gravity. While potassium can be found in urine, the drainage through a catheter does not cause significant potassium loss unless there are underlying kidney issues, which are not specified in this scenario.

D. A chest tube to water-seal drainage:
A chest tube removes air or fluid from the pleural space around the lungs. While chest tubes are vital for lung expansion, they don't result in significant potassium loss as they are not connected to body fluids rich in potassium, like gastric acid or urine.

A. Avoid replacing the NG tube if it is accidentally dislodged:After a gastrectomy, improper placement or reinsertion of the NG tube can disrupt the surgical site, leading to complications such as bleeding, leakage, or perforation. If the tube is accidentally dislodged, the nurse should notify the surgeon or provider, as reinsertions in postoperative gastric surgery clients are typically performed under their direction.

B. Irrigate the blue pigtail port with sterile saline:The blue pigtail port (air vent) of a double-lumen NG tube (e.g., Salem sump) should not be irrigated with saline because it functions as an air vent to prevent suction from damaging the stomach lining.

C. Verify tube placement by injecting air into the larger lumen:Injecting air to verify NG tube placement is no longer considered a reliable or evidence-based practice. Placement should be verified by other methods, such as aspiration of gastric contents, pH testing, or radiographic confirmation, especially in postoperative clients.

D. Avoid the nares when providing hygiene care:Hygiene care for the nares is essential to prevent skin breakdown and discomfort in clients with an NG tube. Neglecting the nares could lead to excoriation, pressure injuries, or infection.