Non-invasive and continuous intra-abdominal pressure assessment using MC sensors

Area of Science:

• Critical care medicine
• Medical device technology
• Surgical monitoring

Background:

• Intra-abdominal pressure (IAP) monitoring is vital for preventing severe complications like intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS).
• Existing methods for IAP measurement can be invasive or lack continuous monitoring capabilities.

Purpose of the Study:

• To evaluate the accuracy and reproducibility of a novel, non-invasive muscle contraction (MC) sensor for monitoring IAP.
• To assess the correlation between MC sensor readings and objective IAP measurements obtained via CO2 insufflation.

Main Methods:

• 41 patients undergoing laparoscopic cholecystectomy were enrolled.
• Two MC sensors were applied abdominally, and IAP was incrementally increased using CO2 insufflation.
• MC sensor readings were compared against randomized IAP values from the CO2 insufflator.

Main Results:

• The MC sensor demonstrated continuous and accurate IAP detection.
• A strong positive linear correlation (Pearson's r = 0.963, R² = 0.927) was found between MC sensor and insufflator measurements.
• The MC system showed high accuracy in identifying IAH (AUC = 0.996) and ACS (AUC = 0.981).

Conclusions:

• The transcutaneous MC sensor is an accurate, non-invasive method for IAP assessment, correlating strongly with CO2 insufflation measurements.
• This innovative device offers a potential alternative to conventional IAP monitoring methods.
• Real-time data from MC sensors can facilitate proactive patient care and early intervention for critical conditions.