Author/Editor		Podbregar, Matej; Košir, Miha; Štajer, Dušan; Zdovc, Jure; Plaskan, Stane
Title		Evaluation of continuous monitoring of stroke volume and cardiac output in patients supported by an intra-aortic balloon pump
Type		članek
Vol. and No.		Letnik 79, št. 7
Publication year		2013
Volume		str. 762-770
ISSN		0375-9393 - Minerva anestesiologica
Language		eng
Abstract		Background: Currently available minimally invasive devices cannot provide continuous determination of stroke volume (SV) or cardiac output (CO) in patients supported with an intra-aortic balloon pump (IABP). Our aim was to evaluate the accuracy of Dat-conTM monitor for continuous SV and CO determination in such patients. Methods: SV (SVdat-con) and CO (COdat-con) were determined by Dat-conTM monitor in 35 patients supported by IABP, at baseline and after 103 therapeutic interventions. Echocardiography was used to measure SV (SVecho) and CO (COecho) from velocity time integral and cross-sectional area of left ventricular outflow tract. Monitored and echocardiographic values were compared using Bland-Altman's statistics. Results: Bias in baseline SVdat-con compared to SVecho was 0.2 mL, with 1.96 limits of agreement (SD) of +-4.8 mL and with percentage error of 11%. Bias of baseline COdat-con compared to COecho was 0.03 l/min, with 1.96 SD of +-0.435 l/min with percentage error of 10.9%. After therapeutic interventions, bias of SVdat-con compared to SVecho was -0.3 mL, with 1.96 SD of +-4.8 mL and with percentage error of 10.5%. Agreement for SV changes was >95% (exclusion zone: changes <10%). Bias of COdat-con compared to COecho after therapeutic interventions was -0.03 L/min, with 1.96 SD of +-0.45 L/min. Conclusion: The accuracy and trending of continuous determination of SV and CO with Dat-conTM monitor in patients supported by IABP is equivalent to echocardiography.
Keywords		intra-aortic balloon pump echocardiographic values minimally invasive devices aortna balonska črpalka ehokardiografske vrednosti minimalno invazivni pripomočki