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Erschienen in: Journal of Clinical Monitoring and Computing 6/2020

04.12.2019 | Brief Communication

Optimized electrical bioimpedance measurements of abdominal wall on a porcine model for the continuous non-invasive assessment of intra-abdominal pressure

verfasst von: Marcelo David, Omer Amran, Aviad Peretz, Aviad Raviv, Francisco Pracca

Erschienen in: Journal of Clinical Monitoring and Computing | Ausgabe 6/2020

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Abstract

This work describes the optimization of electrical bioimpedance measurements for indirect intra-abdominal pressure (IAP) assessment. The experimental run was performed on a female Sus scrofa domesticus (domestic pig). Different values of IAP were induced by inflation of the abdominal cavity, using a trocar placed near the umbilicus over the linea alba. The whole experiment was run within 1 h of the subject being sacrificed. The abdominal wall thickness was measured at an IAP of 5 mmHg. An exponential trend linking between the bioimpedance values at 99.8 kHz and the IAP was found. Non-optimized electrode placement presented a strongly reduced sensitivity to IAP changes above 7 mmHg. Upon optimization and placing the electrodes with a separation of about 3.6 times the measured abdominal wall thickness, the sensitivity for high IAP drastically increased, allowing continuous non-invasive monitoring of IAP, confirming the optimization method proposed in this work.
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Metadaten
Titel
Optimized electrical bioimpedance measurements of abdominal wall on a porcine model for the continuous non-invasive assessment of intra-abdominal pressure
verfasst von
Marcelo David
Omer Amran
Aviad Peretz
Aviad Raviv
Francisco Pracca
Publikationsdatum
04.12.2019
Verlag
Springer Netherlands
Erschienen in
Journal of Clinical Monitoring and Computing / Ausgabe 6/2020
Print ISSN: 1387-1307
Elektronische ISSN: 1573-2614
DOI
https://doi.org/10.1007/s10877-019-00441-6

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