A nurse is caring for a client who is postoperative and has an NG tube that has drained 2,500 ml. In the past 6 hr. The nurse should monitor the client for which of the following electrolyte Imbalances?

A. To remove gastric acid that might cause dyspepsia:
This statement is not accurate. Measuring gastric residuals is not done to remove gastric acid but rather to ensure that the previous feeding has been digested and moved into the intestines before the next feeding is administered.

B. To identify delayed gastric emptying:This is the correct purpose. Measuring gastric residual helps assess whether the stomach is properly emptying its contents. High residual volumes can indicate delayed gastric emptying, which can increase the risk of aspiration and other complications during enteral feeding.

C. To determine the client's electrolyte balance:
Measuring gastric residuals is not used to assess the client's overall electrolyte balance. Electrolyte balance is typically assessed through blood tests and clinical evaluations, not by checking gastric residuals.

D. To confirm the placement of the NG tube:
Although verifying NG tube placement is critical before feeding, this is typically done by checking the tube’s external length, aspirating gastric contents, and confirming placement through pH testing or an X-ray, not by measuring gastric residual.

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.