A novel disposable sensor for measure intra-abdominal pressure

Area of Science:

• Medical Devices
• Physiological Monitoring
• Critical Care Medicine

Background:

• Intra-abdominal pressure (IAP) measurement is crucial in patient care.
• The conventional Kron's method for IAP measurement has drawbacks, including patient discomfort due to bladder water infusion.

Purpose of the Study:

• To introduce and validate a novel disposable sensor for intra-abdominal pressure (DSIAP) measurement.
• To address the limitations associated with the Kron's method.

Main Methods:

• The DSIAP sensor was evaluated through in vitro and clinical testing.
• Comparison with Kron's method utilized Pearson correlation and Bland-Altman analysis.
• In vitro testing involved 159 simulated IAP measurements; clinical testing included 20 pairs of measurements from ICU patients.

Main Results:

• In vitro tests demonstrated a strong correlation (r = 0.99) between DSIAP and reference measurements.
• Clinical tests showed a very good correlation (r = 0.973) between DSIAP and Kron's method.
• Both in vitro and clinical results indicated minimal bias and narrow confidence intervals, suggesting high accuracy and reliability.

Conclusions:

• The DSIAP sensor exhibits performance comparable to existing clinical pressure transducers.
• The DSIAP effectively overcomes the limitations of the Kron's method for IAP monitoring.
• This novel disposable sensor offers a promising alternative for accurate and less invasive IAP measurement.