6 Narrow tubing. Errors in zeroing the transducer will not result in the desired pressure equilibration; this may occur from technical difficulty related to user error or from electronic difficulty due to the phenomenon of zero drift. Zero drift is, literally, electronic malfunction of the transducer, transduction cable attached to the monitor, or of the monitor itself, which results in artificial offset of the arterial waveform from the zero line. (right atrium of the heart 4th intercostal space, midaxillary line). Analysis of damping characteristics of arterial catheter blood pressure Several studies have shown a reduction in complications and failure rate, as well as an increase in first-pass success with the use of ultrasound guidance during central venous catheter placement compared to traditional landmark technique.2,4,5,6,7 As a result more ICUs are now equipped with various bedside ultrasound machines and practitioners are becoming more comfortable with its use, especially for insertion of invasive catheters. Arterial line readings must be calibrated regularly to ensure accuracy. For every 10cm below the phlebostatic axis the transducer will add 7.4mmHg of pressure and vice versa. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. 20 The axillary A-line has some advantages compared to the femoral A-line. He is an internationally recognised Clinician Educator with a passion for helping clinicians learn and for improving the clinical performance of individuals and collectives. You can try flushing the line but often after a period of time the arterial waveform will be inaccurate and you may not be able to aspirate from the arterial cannula. & Bridges, E.J. Please view the course first! If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus.
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