Correlation of continuous non-invasive arterial pressure(CNAP)system and intermittent arterial pressure monitoring for trauma patients in the emergency department
ZHAO Peng
WEI Na
WANG Qian-mei
LI Ping-fang
YIN Wen
Abstract：Objective To compare continuous AP measurements obtained by CNAP with intermittent oscil-lometric AP measurements in ED trauma patients,and to investigate whether continuous non-invasive AP monitoring allows detection of relevant hypotensive episodes that might be missed by intermittent AP monitoring.Methods Totally 110 trauma patients who required AP monitoring in the ED were analyzed in this prospective comparison study.Continuous AP monitoring was performed using CNAP technology over a 2h period.The oscillometric AP val-ues were recorded simultaneously every 15 minutes for the comparison of both methods.For statistical evaluation, Bland-Altman plots accounting for repeated AP measurements per individual were used.Results The mean differ-ence(±standard deviation)between AP measurements obtained by CNAP and oscillometric AP measurements was-6mmHg(±21mmHg)for systolic AP(SAP),-3mmHg(±17mmHg)for diastolic AP(DAP),and -7mmHg (±18mmHg)for mean AP(MAP),respectively.In the interval between two oscillometric measurements,the CNAP device detected hypotensive episodes(≥4 minutes)defined as either SAP <90 mmHg or MAP <65mmHg in 26 patients and 15 patients,respectively.In 11(SAP<90mmHg)and 5(MAP <65mmHg)of these patients,hypo-tension was also detected by the subsequent intermittent oscillometric AP measurement.Conclusions CNAP sys-tem for noninvasive continuous AP measurement shows reasonable agreement with intermittent oscillometric measure -ments in ED trauma patients.Continuous AP monitoring allows immediate recognition of clinically relevant hypoten -sive episodes,which are missed or only belatedly recognized with intermittent AP measurement.
Keywords：traumaartery pressuresystolic blood pressurediastolic blood pressurehypotensionmonitering
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 171-174,202 )