The accuracy of the flowrate in flush-devices of disposable pressure transducers

Arterial and venous pressure is commonly measured using fluid filled catheters. To avoid obstruction they are continuously spilled by a flush-device. The accuracy of the flowrate has not been investigated previously. The accuracy of 5 different flush-devices available in Switzerland was checked for...

Full description

Saved in:
Bibliographic Details
Published in:International journal of clinical monitoring and computing 1995-01, Vol.12 (4), p.219-224
Main Authors: Michel, C, Roth, F, Feigenwinter, P, Zbinden, A M
Format: Article
Language:English
Subjects:
Blood Pressure Determination - instrumentation
Blood Pressure Determination - statistics & numerical data
Disposable Equipment - statistics & numerical data
Equipment Failure
Evaluation Studies as Topic
Humans
Reproducibility of Results
Sterilization - methods
Transducers, Pressure - statistics & numerical data
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Arterial and venous pressure is commonly measured using fluid filled catheters. To avoid obstruction they are continuously spilled by a flush-device. The accuracy of the flowrate has not been investigated previously. The accuracy of 5 different flush-devices available in Switzerland was checked for flowrate when factory new, after a single sterilization with ethylen-oxide, in a long-term test over 96 hours, after repeated handling of the integrated bypass and under application of a pulsing counter-pressure. Flow is linearly related to differential-pressure and is constant over time. The flow of each flush-device at 200 mmHg differential-pressure was below the indicated 3 ml per hour (1.69 - 2.49 ml/h). Sterilization in two types produced a significant but not relevant difference in flowrate. Longtime-use, bypass actuation and pulsing pressure did not alter the flowrate significantly (p
ISSN:0167-9945
DOI:10.1007/BF01207202