Aneurysm sac pressure monitoring: effect of pulsatile motion of the pressure sensor on the interpretation of measurements

Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists
Jan-Willem HinnenJaap F Hamming

Abstract

To determine the effect of pulsatile motion of graft-attached pressure sensors on the accuracy of aneurysm sac pressure measurement. Pressure inside a pressure box was measured with a sensor attached to a stent-graft (Sensorgraft) facing a sensor in fixed position (Sensorbox). Maximum inter-sensor variation of Sensorgraft and Sensorbox was determined in static experiments. Experiments with pulsatile circulation were performed with a compliant and a noncompliant stent-graft at 120/80 mmHg and 160/95 mmHg. Pressure measurements in the box were repeated after the box pressure was increased from 0 to 120 mmHg. Sensorgraft motion was measured by ultrasound. Measurements with Sensorgraft were compared to those with Sensorbox using Pearson correlation coefficients to determine the concordance between the sensors. The maximum inter-sensor variation was 4 mmHg. Increased box pressure induced progressive pulsatile graft and sensor motion during all experiments. During the experiments with the compliant graft at systemic pressures of 120/80 and 160/95 mmHg, the maximum inter-sensor variation was exceeded at box pressures of 65 and 75 mmHg, respectively. The sensor motion at these box pressures was 214+/-2.70 microm and 210+/-0.93 microm, ...Continue Reading

References

Feb 1, 1996·Journal of Endovascular Surgery : the Official Journal of the International Society for Endovascular Surgery·G H WhiteJ May
Aug 23, 2003·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Maarten J van der LaanJan D Blankensteijn
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Feb 8, 2005·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·J W HinnenJ H van Bockel
Dec 27, 2005·Journal of Vascular Surgery·Jan-Willem HinnenHajo J Van Bockel
Nov 13, 2009·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·N V DiasB Sonesson

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Citations

Feb 24, 2015·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·H T C VegerM J T Visser
Feb 17, 2007·Journal of Vascular Surgery·Jan-Willem HinnenJaap F Hamming
Mar 14, 2009·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Willem-Maarten P F BosmanJaap F Hamming
Aug 25, 2006·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Arindam Chaudhuri

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