Related Experiment Video
Updated: Aug 1, 2026

Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
Published on: January 29, 2011
A simple method for frequent monitoring of gastric carbon dioxide
Abstract:
Intragastric PCO2 has been recognized to rise in states of gastric hypoperfusion. A device including a gas-permeable balloon on a conventional sump nasogastric tube (TRIP catheter, Tonometrics) has permitted simple measurement of the intragastric PCO2 following equilibration of intragastric PCO2 with saline in the balloon. This method is slow to equilibrate and time-consuming. We describe an automated method using air instead of saline in the balloon with measurement using capnography. Equilibration is much faster using air and the automated system permits measurements to be taken at regular intervals (10 minutes) without additional workload.
More Related Videos
Related Concept Videos
Stomach pH Regulation
The acid-secreting gastric mucosal epithelial cells (parietal cells) lining the stomach lumen maintain the low pH in the lumen. Numerous ion transporters and channels on these parietal...
Assessment of Diffusion and Perfusion
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
![Assessment of Gastric Emptying in Non-obese Diabetic Mice Using a [13C]-octanoic Acid Breath Test](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F50301.jpg&w=3840&q=50)
