Stretchable Capacitive Pressure Sensing Sleeve Deployable onto Catheter Balloons towards Continuous Intra-Abdominal Pressure Monitoring.

Kirthika Senthil Kumar,Hui Huang,Manivannan Sivaperuman Kalairaj,Hongliang Ren,Zongyuan Xu,Godwin Ponraj,Qing Hui Wu,Chi-Fai Ng

doi:10.3390/bios11050156

Abstract

Intra-abdominal pressure (IAP) is closely correlated with intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) diagnoses, indicating the need for continuous monitoring. Early intervention for IAH and ACS has been proven to reduce the rate of morbidity. However, the current IAP monitoring method is a tedious process with a long calibration time for a single time point measurement. Thus, there is the need for an efficient and continuous way of measuring IAP. Herein, a stretchable capacitive pressure sensor with controlled microstructures embedded into a cylindrical elastomeric mold, fabricated as a pressure sensing sleeve, is presented. The sensing sleeve can be readily deployed onto intrabody catheter balloons for pressure measurement at the site. The thin and highly conformable nature of the pressure sensing sleeve captures the pressure change without hindering the functionality of the foley catheter balloon.

Highlights

Intra-abdominal pressure (IAP) is the pressure within the abdominal cavity enclosed by the abdominal wall and the viscera
This paper presents a pressure sensing sleeve fabricated for IAP monitoring (Figure 1b)
We presented a stretchable pressure sensing sleeve, readily deplo on Foley catheter balloons for continuous IAP monitoring

Summary

Introduction

Intra-abdominal pressure (IAP) is the pressure within the abdominal cavity enclosed by the abdominal wall and the viscera. Normal IAP is defined to be below 12 mmHg. Sustained elevation of IAP > 12 mmHg (1.6 kPa) is termed as intra-abdominal hypertension (IAH), and elevation >20 mmHg (2.7 kPa) is defined as abdominal compartment syndrome (ACS). Sustained elevation of IAP > 12 mmHg (1.6 kPa) is termed as intra-abdominal hypertension (IAH), and elevation >20 mmHg (2.7 kPa) is defined as abdominal compartment syndrome (ACS) These IAP elevations can lead to conditions altering organ perfusion and organ dysfunctions [1,2], or even organ failure in extreme cases [3]. As recommended by the World Society of the Abdominal Compartment Syndrome (WSACS), IAP measurements are to be made every four hours for critically ill patients.

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Conclusion