Key result
Rapid-response thermodilution catheter correlates well with biplane angiography for RVEF, with r of ~0.83.
Why the study?
The accuracy and correlation of right ventricular ejection fraction and volume measurements by thermodilution compared to biplane angiography were uncertain.
Does thermodilution accurately measure right ventricular ejection fraction and volume compared to biplane angiography in patients without tricuspid incompetence?
Population
13 patients without tricuspid incompetence
Comparison
Thermodilution at end-inspiration vs biplane angiography
Design
Observational study
Authors
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May support thermodilution for RV assessment in select patients; leaves open validation before routine use.
Observational (n=13)
Does thermodilution accurately measure right ventricular ejection fraction and volume compared to biplane angiography in patients without tricuspid incompetence?
Effect estimate: r = 0.83 for RVEF, r = 0.71 for RVEDV
Thermodilution using a rapid response thermistor provides acceptable correlation with biplane angiography for measuring right ventricular volumes and ejection fraction, though it systematically underestimates RVEF and overestimates RVEDV.
Urban et al. (1987) conducted an observational in Without tricuspid incompetence (n=13). Thermodilution using a pulmonary artery catheter with a rapid response thermistor vs. Biplane angiography was evaluated on Correlation of right ventricular ejection fraction (RVEF) and right ventricular end-diastolic volume (RVEDV) measurements (r = 0.83 for RVEF, r = 0.71 for RVEDV). Thermodilution using a rapid response thermistor catheter correlated acceptably with biplane angiography for measuring RVEF (r = 0.83) and RVEDV (r = 0.71).
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