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Evaluation of two novel methods for the direct and continuous measurement of the intra-abdominal pressure in a porcine model

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Abstract

Objective

Intravesical bladder pressure (IVP) measurement is considered to be the gold standard for the assessment of intra-abdominal pressure (IAP). However, this method is indirect, discontinuous, and potentially infectious and relies on a physiological bladder function. This study evaluated two novel methods for direct, continuous IAP measurement.

Design and setting

Experimental study in an animal research laboratory.

Subjects

18 male domestic pigs.

Interventions

CO2 was insufflated to increase the IAP to 30 mmHg for 18 and 24 h in six animals each. Another six animals served as controls. A piezoresistive (PRM) and an air-capsule (ACM) pressure measurement probe were placed intra-abdominally and of IAP was measured every 1 h (PRM/ACM) or every 2 h (IVP). The mean difference between insufflator readings and IAP values and limits of agreement (mean difference ±2 SD) were calculated.

Measurements and results

In the presence of applied pressure IVP and PRM remained significantly below insufflator readings while ACM values showed no difference. Mean difference (and limits of agreement) were 4.5 (−2.1 to 11.1 mmHg), 1.6 (−8.0 to 11.2 mmHg), and 0.5 (−4.5 to 5.4 mmHg) for IVP, PRM, and ACM. The mean measurement-to-measurement drift of the ACM values was 9.0±10.2 mmHg.

Conclusions

In this model agreement of PRM and ACM with insufflator readings was comparable to IVP. As both methods may be advantageous regarding continuous straightforward measurement of IAP, the employment in further experimental and clinical investigations is suggested.

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Acknowledgements

We are grateful to Professor Kuepper, Dr. Scherer, and T. Stopinski, Department of Animal Laboratory Research, Rhenish-Westphalian Technical University of Aachen, for their invaluable help in conducting the study.

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Authors and Affiliations

  1. Department of Surgery, Rhenish-Westphalian Technical University Aachen, Pauwelsstrasse 30, 52074, Aachen, Germany

    Alexander Schachtrupp, Christian Tons, Volker Fackeldey, Joerg Hoer & Volker Schumpelick

  2. Department of Neurosurgery, Rhenish-Westphalian Technical University Aachen, Pauwelsstrasse 30, 52074, Aachen, Germany

    Marcus Reinges

Authors
  1. Alexander Schachtrupp
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  2. Christian Tons
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  3. Volker Fackeldey
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  4. Joerg Hoer
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  5. Marcus Reinges
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  6. Volker Schumpelick
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Corresponding author

Correspondence to Alexander Schachtrupp.

Additional information

This research work was supported by the Deutsche Forschungsgemeinschaft and the Medical Service of the German Armed Forces.

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Schachtrupp, A., Tons, C., Fackeldey, V. et al. Evaluation of two novel methods for the direct and continuous measurement of the intra-abdominal pressure in a porcine model. Intensive Care Med 29, 1605–1608 (2003). https://doi.org/10.1007/s00134-003-1847-3

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  • DOI: https://doi.org/10.1007/s00134-003-1847-3

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