NCLEX Question for the best method for determining nasogastric tube placement in the stomach

NCLEX Review Question

Which of the following methods is the best method for determining nasogastric tube placement in the stomach?

a.X-ray
b.Observation of gastric aspirate
c.Testing of pH of gastric aspirate
d.Placement of external end of tube under water

Correct Answer: A
X-ray
Rationale: Radiologic identification of tube placement in the stomach is most reliable.

Observation of gastric aspirate
Rationale: Gastric fluid may be grassy green, brown, clear, or odorless while an aspirate from the lungs may be off-white or tan. Hence, checking aspirate is not the best method of determining nasogastric tube placement in the stomach.

Testing of pH of gastric aspirate
Rationale: Gastric pH values are typically lower or more acidic than that of the intestinal or respiractory tract, but not always.

Placement of external end of tube under water
Rationale: Placement of external end of tube under water and watching

Posted in: MSN NCLEX