In vitro evaluation of an ultrasonic cardiac output monitoring (USCOM) device.
Non-invasive cardiac output monitoring techniques provide high yield, low risk mechanisms to identify and individually treat shock in the emergency setting. The non-invasive ultrasonic cardiac output monitoring (USCOM) device uses an ultrasound probe applied externally to the chest; however limitati...
| Publicado en: | Journal of Clinical Monitoring & Computing Vol. 30; no. 1; pp. 69 - 76 |
|---|---|
| Autores principales: | , , , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Springer Nature
Feb2016
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=112814889&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 112814889 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13871307 OHC jtl: Journal of Clinical Monitoring & Computing issn: 13871307 maglogo: N pubinfo: dt: Feb2016 vid: 30 iid: 1 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 112814889 112814889 NLM25749977 112814889 10.1007/s10877-015-9685-8 NLM25749977 112814889 ppf: 69 ppct: 7 formats: fmt: @attributes: type: P tig: atl: In vitro evaluation of an ultrasonic cardiac output monitoring (USCOM) device. aug: au: Gregory, Shaun Cooney, Helena Diab, Sara Anstey, Chris Thom, Ogilvie Fraser, John Gregory, Shaun D Fraser, John F affil: Emergency Department, Redcliffe Hospital, Redcliffe Australia sug: subj: Emergency Medical Services Methods Heart Function Tests Equipment and Supplies Echocardiography, Doppler Equipment and Supplies Cardiac Output In Vitro Studies Reproducibility of Results Sensitivity and Specificity Heart Function Tests Methods Equipment Design Equipment Failure Validation Studies Comparative Studies Evaluation Research Multicenter Studies ab: Non-invasive cardiac output monitoring techniques provide high yield, low risk mechanisms to identify and individually treat shock in the emergency setting. The non-invasive ultrasonic cardiac output monitoring (USCOM) device uses an ultrasound probe applied externally to the chest; however limitations exist with previous validation strategies. This study presents the in vitro validation of the USCOM device against calibrated flow sensors and compares user variability in simulated healthy and septic conditions. A validated mock circulation loop was used to simulate each condition with a range of cardiac outputs (2-10 l/min) and heart rates (50-95 bpm). Three users with varying degrees of experience using the USCOM device measured cardiac output and heart rate by placing the ultrasound probe on the mock aorta. Users were blinded to the condition, heart rate and cardiac output which were randomly generated. Results were reported as linear regression slope (β). All users estimated heart rate in both conditions with reasonable accuracy (β = 0.86-1.01), while cardiac output in the sepsis condition was estimated with great precision (β = 1.03-1.04). Users generally overestimated the cardiac output in the healthy simulation (β = 1.07-1.26) and reported greater difficulty estimating reduced cardiac output compared with higher values. Although there was some variability between users, particularly in the healthy condition (P < 0.01), all estimations were within a clinically acceptable range. In this study the USCOM provided a suitable measurement of cardiac output and heart rate when compared with our in vitro system. It is a promising technique to assist with the identification and treatment of shock. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|