Assessment of stroke volume index with three different bioimpedance algorithms: lack of agreement compared to thermodilution.

ABSTRACT:

Objective

The accuracy of bioimpedance stroke volume index (SVI) is questionable as studies report inconsistent results. It remains unclear whether the algorithms alone are responsible for these findings. We analyzed the raw impedance data with three algorithms and compared bioimpedance SVI to transpulmonary thermodilution (SVI(TD)).

Design and setting

Prospective observational clinical study in a university hospital.

Patients

Twenty adult patients scheduled for coronary artery bypass grafting (CABG).

Interventions

SVI(TD) and bioimpedance parameters were simultaneously obtained before surgery (t1), after bypass (t2), after sternal closure (t3), at the intensive care unit (t4), at normothermia (t5), after extubation (t6) and before discharge (t7). Bioimpedance

SUBMITTER: de Waal EE 

PROVIDER: S-EPMC2271085 | biostudies-literature | 2008 Apr

REPOSITORIES: biostudies-literature