Prehospital Invasive Arterial Pressure: Use of a Minimized Flush System

Prehospital and Disaster Medicine
Jonas KarlssonMikael Gellerfors

Abstract

IntroductionInvasive blood pressure (IBP) monitoring could be of benefit for certain prehospital patient groups such as trauma and cardiac arrest patients. However, there are disadvantages with using conventional IBP devices. These include time to prepare the transducer kit and flush system as well as the addition of long tubing connected to the patient. It has been suggested to simplify the IBP equipment by replacing the continuous flush system with a syringe and a short stopcock.HypothesisIn this study, blood pressures measured by a standard IBP (sIBP) transducer kit with continuous flush was compared to a transducer kit connected to a simplified and minimized flush system IBP (mIBP) using only a syringe. A mechanical, experimental model was used to create arterial pressure pulsations. Measurements were made simultaneously using a sIBP and mIBP device, respectively. This was repeated four times using different mean arterial pressure (MAP): 40, 70, 110, and 140mm Hg. For each series, 16 measurements were taken during 20 minutes. Data were analyzed using Bland-Altman plots. Measurement error greater than five percent was regarded as clinically significant. Mean bias and standard deviation (SD) for systolic blood pressure (SBP),...Continue Reading

References

Sep 29, 1999·Statistical Methods in Medical Research·J M Bland, D G Altman
Jun 27, 2013·Circulation·Peter A MeaneyUNKNOWN CPR Quality Summit Investigators, the American Heart Association Emergency Cardiovascular Care Committee, and the Council on
Jan 27, 2016·Acta Anaesthesiologica Scandinavica·Ø ØsteråsJ-K Heltne
Sep 23, 2016·Neurosurgery·Nancy CarneyJamshid Ghajar

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