How should the critical care nurse most accurately titrate the dose and frequency of administration of an intragastric drip of an antacid through a nasogastric tube?

The critical care nurse most accurately titrate the dose and frequency of administration by aspirating stomach contents and measuring the pH.

For patients with a nasogastric tube in place, antacid dosage may be titrated by aspirating stomach contents, determining pH, and then basing the dose on the pH. Accurate measurement of gastric pH cannot be determined from the buccal mucosa or urine.