title: Agreement between stroke volume measured by oesophageal Doppler and uncalibrated pulse contour analysis during fluid loads in severe aortic stenosis.
abstract: The purpose of this analysis was to study agreement and trending of stroke volume measured by oesophageal Doppler and 3rd generation Vigileo during fluid loads in patients with severe aortic stenosis. Observational study in 32 patients (30 analyzed) scheduled for aortic valve replacement due to severe aortic stenosis. After induction of anesthesia and before start of surgery, hemodynamic registrations for 1 min were obtained before and after a fluid load. Agreement between stroke volume measured by oesophageal Doppler (SVOD) and Vigileo (SVVig) was evaluated in Bland-Altman plot and trending in four-quadrant and polar plots. Bias ± limits of agreement (LOA) between SVOD and SVVig was 24 ± 37 ml (percentage error 45%). Concordance of the two methods from before to after a fluid load was 100%. Angular bias ± LOA was 12° ± 28°. Absolute values of SVOD and SVVig agreed poorly, but changes were highly concordant during fluid loads in aortic stenosis patients. The angular agreement indicated acceptable trending. The two measurement methods are not interchangeable in patients with aortic stenosis.
authors: Faculty of Medicine, University of Oslo, Oslo, Norway, lars.oivind.hoiseth@hotmail.com.
authors: Lars Øivind
authors: LØ
authors: Høiseth
authors: Ingrid Elise
authors: IE
authors: Hoff
authors: Ove Andreas
authors: OA
authors: Hagen
authors: Svein Aslak
authors: SA
authors: Landsverk
authors: Knut Arvid
authors: KA
authors: Kirkebøen
mesh_terms: D000368:Aged; D000465:Algorithms; D000777:Anesthetics; D001021:Aortic Valve / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging / Q000601:surgery*; D002302:Cardiac Output; D002318:Cardiovascular Diseases / Q000503:physiopathology; D003324:Coronary Artery Disease / Q000503:physiopathology; D003920:Diabetes Mellitus / Q000503:physiopathology; D004947:Esophagus / Q000000981:diagnostic imaging; D005260:Female; D006339:Heart Rate; D006350:Heart Valve Prosthesis; D006439:Hemodynamics; D006801:Humans; D006973:Hypertension / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods*; D011312:Pressure; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted; D013318:Stroke Volume; D018608:Ultrasonography, Doppler
chemical_list: D000777:Anesthetics
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