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Feasibility and accuracy of continuous intraabdominal pressure monitoring with a capsular device in human pilot trial
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Feasibility and accuracy of continuous intraabdominal pressure monitoring with a capsular device in human pilot trial
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Journal Article
Feasibility and accuracy of continuous intraabdominal pressure monitoring with a capsular device in human pilot trial
2025
Overview
Background
Intrabdominal pressure (IAP) is an important parameter. Elevated IAP can reduce visceral perfusion, lead to intraabdominal hypertension, and result in life-threatening abdominal compartment syndrome. While ingestible capsular devices have been used for various abdominal diagnoses, their application in continuous IAP monitoring remains unproven.
Method
We conducted a prospective clinical trial to evaluate the feasibility of IAP measurement using a digital capsule PressureDOT, an ingestible capsule equipped with wireless transmission capability and a pressure sensor, then compared its reliability with conventional intravesical method. Patients undergoing laparoscopic or robotic surgeries were recruited. During surgery, we created pneumoperitoneum by inflating CO2 into the peritoneal cavity and IAP was simultaneously monitored using both the ingestible capsules and intravesical measurements from Foley catheter. We assessed the feasibility of signal transmission and the accuracy of pressure measurements.
Results
Six patients were enrolled in this pilot study. No adverse events were reported, and the average first-intake time was within 24 h. All capsules were successfully expelled, with an average excretion time of 81 h. In the summarized data, the mean IAPdot is 0.6 mmHg lower than the IAPivp, with a standard deviation of 1.68 mmHg. However, capsule measurements showed excellent correlation with intravesical IAP measurements, with an intraclass correlation coefficient of 0.916 (95% CI: 0.8821–0.9320).
Conclusion
Our study demonstrates the feasibility and safety of using digital capsules for continuous IAP monitoring, providing the agreement between IAP measurements from digital capsules and conventional intravesical measurement within a near-normal pressure.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
Subject
/ Abdominal Cavity - physiopathology
/ Abdominal compartment syndrome
/ Accuracy
/ Adult
/ Aged
/ Female
/ Humans
/ Intra-Abdominal Hypertension - diagnosis
/ Intra-Abdominal Hypertension - physiopathology
/ Male
/ Medicine
/ Monitoring, Physiologic - instrumentation
/ Monitoring, Physiologic - methods
/ Monitoring, Physiologic - standards
/ Patients
/ Pressure
/ Sensors
/ Surgery
