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Open Access Highly Accessed Research article

Direct intra-abdominal pressure monitoring via piezoresistive pressure measurement: a technical note

Jens Otto1*, Daniel Kaemmer1, Marcel Binnebösel1, Marc Jansen1, Rolf Dembinski2, Volker Schumpelick1 and Alexander Schachtrupp1

Author affiliations

1 Department of Surgery, University Hospital RWTH Aachen, Aachen, Germany

2 Department of Surgical Intensive Care Medicine, University Hospital of the RWTH Aachen, Aachen, Germany

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Citation and License

BMC Surgery 2009, 9:5  doi:10.1186/1471-2482-9-5

Published: 21 April 2009

Abstract

Background

Piezoresistive pressure measurement technique (PRM) has previously been applied for direct IAP measurement in a porcine model using two different devices. Aim of this clinical study was to assess both devices regarding complications, reliability and agreement with IVP in patients undergoing elective abdominal surgery.

Methods

A prospective cohort study was performed in 20 patients randomly scheduled to receive PRM either by a Coach®-probe or an Accurate++®-probe (both MIPM, Mammendorf, Germany). Probes were placed on the greater omentum and passed through the abdominal wall paralleling routine drainages. PRM was compared with IVP measurement by t-testing and by calculating mean difference as well as limits of agreement (LA).

Results

There were no probe related complications. Due to technical limitations, data could be collected in 3/10 patients with Coach® and in 7/10 patients with Accurate++®. Analysis was carried out only for Accurate++®. Mean values did not differ to mean IVP values. Mean difference to IVP was 0.1 ± 2.8 mmHg (LA: -5.5 to 5.6 mmHg).

Conclusion

Direct IAP measurement was clinically uneventful. Although results of Accurate++® were comparable to IVP, the device might be too fragile for IAP measurements in the clinical setting. Local ethical committee trial registration: EK2024