Predicting Fluid Needs During Heart Surgery
Author Information
Author(s): Sander Michael, Spies Claudia D, Berger Katharina, Grubitzsch Herko, Foer Achim, Krämer Michael, Carl Matthias, Heymann Christian
Primary Institution: Charité Universitätsmedizin Berlin
Hypothesis
Can CVP, PCWP, GEDVI, SVV, and PPV effectively predict changes in cardiac index and stroke volume index after sternotomy in cardiac surgery patients?
Conclusion
CVP and PCWP are not suitable for monitoring fluid status during cardiac surgery, while GEDVI, SVV, and PPV are more reliable indicators.
Supporting Evidence
- CVP and PCWP did not correlate with changes in cardiac index after sternotomy.
- GEDVI, SVV, and PPV showed significant correlations with changes in cardiac index.
- Only relative changes in GEDVI, SVV, and PPV predicted an increase in stroke volume index.
Takeaway
Doctors need to use better tools than CVP and PCWP to check if heart surgery patients need more fluids, especially after opening the chest.
Methodology
Measured CVP, PCWP, GEDVI, SVV, and CI in 40 patients at two time points: after anesthesia induction and after sternotomy.
Limitations
The study did not measure catecholamine discharge or chest wall compliance changes post-sternotomy.
Participant Demographics
Mean age 63 years, 36 males and 4 females, average height 1.75 m, average weight 90 kg.
Statistical Information
P-Value
<0.01
Confidence Interval
95% confidence interval for GEDVI delta: 0.61–0.91
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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