Comparative performance of mitral E/e’ versus inferior vena cava variability for predicting fluid responsiveness in mechanically ventilated adults with shock - Report - MDSpire
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Comparative performance of mitral E/e’ versus inferior vena cava variability for predicting fluid responsiveness in mechanically ventilated adults with shock
Clinical Report: Evaluation of Mitral E/e’ Ratio Compared to IVC Variability
Overview
This study evaluates the predictive capability of the mitral E/e' ratio versus the inferior vena cava variability index (IVCVI) for fluid responsiveness in mechanically ventilated shock patients.
Background
Accurate prediction of fluid responsiveness is crucial in managing shock, as both inadequate and excessive fluid resuscitation can adversely affect patient outcomes. Echocardiographic parameters, such as IVCVI and mitral E/e', provide valuable insights into hemodynamic status and fluid responsiveness.
Data Highlights
Parameter
Responders (n=51)
Nonresponders (n=29)
MAP (baseline)
68.4 ± 12.0 mmHg
73.7 ± 16.0 mmHg
MAP (after fluid)
78.5 ± 14.5 mmHg
71.1 ± 14.4 mmHg
Heart Rate (baseline)
106.1 ± 24.0 bpm
Unchanged
Heart Rate (after fluid)
103.7 ± 23.3 bpm
Unchanged
IVCVI AUROC
0.788
-
Mitral E/e’ AUROC
0.682
-
Key Findings
IVCVI demonstrated superior predictive capability for fluid responsiveness with an AUROC of 0.788.
Mitral E/e' showed moderate discrimination for fluid responsiveness with an AUROC of 0.682.
Optimal cutoff for IVCVI was > 18%, yielding a sensitivity of 68.6% and specificity of 58.6%.
Mitral E/e' optimal cutoff was < 10, with sensitivity of 58.7% and specificity of 75.9%.
After fluid administration, responders showed a significant increase in MAP and cardiac index compared to nonresponders.
Central venous pressure (CVP) and pulse pressure variation (PPV) also provided predictive value for fluid responsiveness.
Clinical Implications
The findings suggest that IVCVI is a more reliable indicator of fluid responsiveness than mitral E/e’ in mechanically ventilated shock patients. Clinicians should consider prioritizing IVCVI in echocardiographic assessments for fluid management.
Conclusion
In mechanically ventilated shock patients, IVCVI outperforms mitral E/e’ in predicting fluid responsiveness, highlighting the importance of selecting appropriate echocardiographic parameters in critical care settings.
