open access

Vol 46, No 4 (2014 Sep-Oct)
Original and clinical articles
Submitted: 2014-10-07
Accepted: 2014-10-07
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Validation of a novel method for measuring intra-abdominal pressure and gastric residual volume in critically ill patients

Johan Van Stappen, Chiara Pigozzi, Robert Tepaske, Niels Van Regenmortel, Inneke De laet, Karen Schoonheydt, Hilde Dits, Paolo Severgnini, Derek J. Roberts, Manu LNG Malbrain
DOI: 10.5603/AIT.2014.0042
·
Anaesthesiol Intensive Ther 2014;46(4):245-254.

open access

Vol 46, No 4 (2014 Sep-Oct)
Original and clinical articles
Submitted: 2014-10-07
Accepted: 2014-10-07

Abstract

Background: Gastric residual volume (GRV) can be measured in a variety of ways in critically ill patients, most often, the nasogastric tube is disconnected and the GRV is aspirated via a 60 mL syringe. Bladder pressure (IBP) measurement is the gold standard for intra-abdominal pressure (IAP) estimation. This study will look at the validation of a novel method combining measurement of GRV and estimation of IAP via intra-gastric pressure (IGP).

Methods: In total 135 paired IAP and 146 paired GRV measurements were performed in 37 mechanically ventilated ICU patients. The IAP was estimated via the bladder (i.e. IBP) using the FoleyManometer and via the stomach (i.e. IGP) with the new device. The GRV was measured with the new device (GRVprototype) and via the classic method (GRVclassic). The devices were provided by Holtech Medical (Charlottenlund, Denmark) and data were retrospectively analysed.

Results: The number of paired measurements in each patient was 4 ± 1. The mean IBP was 10.7 ± 4.1 and mean IGP was 11.6 ± 4.1 mm Hg. Correlation between the IBP and IGP was significant, however moderate (R2 = 0.51). Analysis according to Bland and Altman showed a bias and precision of 0.8 and 2.7 mm Hg respectively, however the limits of agreement (LA) were large and ranged from −4.5 to 6.1 mm Hg. Changes in IGP correlated well with changes in IBP. The median GRVprototype was 80 mL (0–1050) and equal to the median GRVclassic of 80 mL (0−1250). Correlation between the 2 methods was excellent (R2 = 0.89). Analysis according to Bland and Altman showed a bias and precision of -0.8 and 52.3 mL respectively and the LA ranged from –103 to 102 mL. Changes in GRVclassic correlated well with changes in GRVprototype.

Conclusions: The results of this multicentre pilot study show that GRV can be measured with the new device. Furthermore this allows simultaneous screening for intra-abdominal hypertension with IAP estimation via IGP.

Abstract

Background: Gastric residual volume (GRV) can be measured in a variety of ways in critically ill patients, most often, the nasogastric tube is disconnected and the GRV is aspirated via a 60 mL syringe. Bladder pressure (IBP) measurement is the gold standard for intra-abdominal pressure (IAP) estimation. This study will look at the validation of a novel method combining measurement of GRV and estimation of IAP via intra-gastric pressure (IGP).

Methods: In total 135 paired IAP and 146 paired GRV measurements were performed in 37 mechanically ventilated ICU patients. The IAP was estimated via the bladder (i.e. IBP) using the FoleyManometer and via the stomach (i.e. IGP) with the new device. The GRV was measured with the new device (GRVprototype) and via the classic method (GRVclassic). The devices were provided by Holtech Medical (Charlottenlund, Denmark) and data were retrospectively analysed.

Results: The number of paired measurements in each patient was 4 ± 1. The mean IBP was 10.7 ± 4.1 and mean IGP was 11.6 ± 4.1 mm Hg. Correlation between the IBP and IGP was significant, however moderate (R2 = 0.51). Analysis according to Bland and Altman showed a bias and precision of 0.8 and 2.7 mm Hg respectively, however the limits of agreement (LA) were large and ranged from −4.5 to 6.1 mm Hg. Changes in IGP correlated well with changes in IBP. The median GRVprototype was 80 mL (0–1050) and equal to the median GRVclassic of 80 mL (0−1250). Correlation between the 2 methods was excellent (R2 = 0.89). Analysis according to Bland and Altman showed a bias and precision of -0.8 and 52.3 mL respectively and the LA ranged from –103 to 102 mL. Changes in GRVclassic correlated well with changes in GRVprototype.

Conclusions: The results of this multicentre pilot study show that GRV can be measured with the new device. Furthermore this allows simultaneous screening for intra-abdominal hypertension with IAP estimation via IGP.

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Keywords

intra-abdominal pressure; gastric residual volume; intra-gastric pressure; Intra-abdominal hypertension; abdominal compartment syndrome; critically ill patients; enteral feeding

About this article
Title

Validation of a novel method for measuring intra-abdominal pressure and gastric residual volume in critically ill patients

Journal

Anaesthesiology Intensive Therapy

Issue

Vol 46, No 4 (2014 Sep-Oct)

Pages

245-254

DOI

10.5603/AIT.2014.0042

Bibliographic record

Anaesthesiol Intensive Ther 2014;46(4):245-254.

Keywords

intra-abdominal pressure
gastric residual volume
intra-gastric pressure
Intra-abdominal hypertension
abdominal compartment syndrome
critically ill patients
enteral feeding

Authors

Johan Van Stappen
Chiara Pigozzi
Robert Tepaske
Niels Van Regenmortel
Inneke De laet
Karen Schoonheydt
Hilde Dits
Paolo Severgnini
Derek J. Roberts
Manu LNG Malbrain

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