Equivalence of bioimpedance and thermodilution in measuring cardiac index after cardiac surgery.

Objective: To compare thoracic electrical bioimpedance (TEB) cardiography versus pulmonary artery thermodilution (TD) derived cardiac index in patients after cardiopulmonary bypass.

Design: Prospective, blinded electronic data collection.

Setting: Intensive care unit of a military hospital.

Reliability and precision of a new thoracic electrical bioimpedance monitor in a lower body negative pressure model.

Objective: To evaluate the reliability and precision of measurement in a new thoracic electrical bioimpedance (TEB) monitor.

Design: Prospective clinical trial using healthy volunteers.

Setting: Military tertiary care teaching hospital.

Lack of agreement between measurement of ejection fraction by impedance cardiography versus radionuclide ventriculography.

Objective: To determine the limits of agreement between left ventricular ejection fraction estimated using systolic time intervals from impedance cardiography and left ventricular ejection fraction estimated by radionuclide ventriculography.

Design: A prospective study for diagnostic tests using radionuclide ventriculography as the criterion standard.

Setting: A large military teaching hospital.

Thoracic electrical bioimpedance measurement of cardiac output in postaortocoronary bypass patients.

Objective: To assess the degree of correlation and agreement between cardiac output by thermodilution and bioimpedance using the BoMed NCCOM3-R7 monitor in postaortocoronary bypass patients.

Design: Prospective, randomized sampling.

Setting: Military teaching hospital intensive care unit.