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Saline volume in transvesical intra-abdominal pressure measurement: enough is enough

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Abstract

Objective

The objective was to determine the minimum volume of instillation fluid for intra-abdominal pressure (IAP) measurement, and to evaluate the effect of instillation volume on transvesically measured IAP.

Design

Prospective cohort study

Setting

Twenty-two-bed surgical ICU of the Ghent University Hospital

Patients and participants

Twenty patients at risk of intra-abdominal hypertension (IAH).

Interventions

Transvesical IAP measurement using volumes from 10 to 100 ml. Minimal volume at which an IAP was measured was recorded (IAPmin), as well as IAP at 50 and 100 ml of instillation volume (IAP50 and IAP100). The percentage difference for IAP50 and IAP100 was calculated.

Measurements and results

The minimal volume for IAP measurement was 10 ml in all patients. Mean IAPmin was 12.8 mmHg (± 4.9), mean IAP50 15 mmHg (± 4.5) and mean IAP100 17.1mmHg (± 4.7). The mean percentage difference for IAP50 was 21% (± 17%), and 40% (± 29%) for IAP100.

Twelve patients were categorised as suffering from IAH when 10 ml of saline was used for IAP measurement, increasing to 15 and 17 patients respectively when using 50 and 100 ml.

In patients with IAH, there was a significant correlation between the duration of bladder drainage and percentage difference for IAP100 (Pearson correlation coefficient 0.60, p = 0.03).

Conclusions

Using 50 or 100 ml of saline for IAP measurement in critically ill patients results in higher IAP values compared with the use of 10 ml, and possibly, in overestimation of the incidence of intra-abdominal hypertension.

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Acknowledgements

Jan J. De Waele is supported by a Clinical Doctoral Grant from the Fund for Scientific Research — Flanders (Belgium; F.W.O. – Vlaanderen).

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Authors and Affiliations

  1. Intensive Care Unit 1K12-C, Ghent University Hospital, De Pintelaan 185, 9000, Ghent, Belgium

    J. De Waele, P. Pletinckx, S. Blot & E. Hoste

Authors
  1. J. De Waele
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  2. P. Pletinckx
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  3. S. Blot
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  4. E. Hoste
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Corresponding author

Correspondence to J. De Waele.

Additional information

This work was presented at the annual meeting of the European Society of Intensive Care Medicine, Amsterdam 10–13 October 2005

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De Waele, J., Pletinckx, P., Blot, S. et al. Saline volume in transvesical intra-abdominal pressure measurement: enough is enough. Intensive Care Med 32, 455–459 (2006). https://doi.org/10.1007/s00134-005-0062-9

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  • DOI: https://doi.org/10.1007/s00134-005-0062-9

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