Intraabdominal pressure measurement

I recently discovered that this is a thing. A catheter is inserted into the bladder, filled with water, and the other end is connected to a glass tube, serving as a weight manometer. Simillar to a urodynamic test, but focusing on the vesical pressure to estimate the intra abdominal one. Anybody having experience with this procedure?

This is actually a normal part of a urodynamics study, although they haven’t really used water manometers like you describe for years, probable decades.

They just use an electronic pressure transducer to measure the pressure. Typically one goes into a catheter in the bladder and there is a second one that goes into a catheter that is slipped into the rectum or the vagina. They use the difference between the two to tell how much pressure is in the bladder relative to the inter abdominal pressure.

I mean technically you could try to use a pair of water manometers to do this, but it would be very challenging to do.

I partecipated in a few clinical trials as healthy subject and I had to undergo accurate neuro-urologic tests. These included a multichannel urodinamics test with anorectal manometry. My penis was catheterized with a special catheter connected with a pump and a pressure transducer then a anorectal probe was slipped inside and inflated to distend the rectum. I had several tests where the bladder was filled and pressure during voiding was measured while anorectal contractions were recorded. I was in stirrups and the procedure was a little unconfortable due to the genitals manipulation and the distension of the rectum and urge to pee.