Correlation Between Cerebral Near-Infrared Spectroscopy and Hoffman Index With Central Venous Saturation in Children who Underwent Surgery for Congenital Heart Disease
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View abstract on PubMed
Summary
This summary is machine-generated.The Hoffman index, derived from near-infrared spectroscopy (NIRS), shows a stronger correlation with central venous oxygen saturation (SvO2) than cerebral NIRS alone. This suggests the Hoffman index is a valuable tool for monitoring hemodynamics in pediatric patients post-congenital heart surgery.
Area Of Science
- Cardiology
- Pediatric Surgery
- Biomedical Engineering
Background
- Post-cardiopulmonary bypass surgery for congenital heart disease often leads to hemodynamic instability.
- Monitoring tissue oxygen balance is crucial for patient management.
- Central venous saturation (SvO2) offers insights but is invasive and not continuous.
Purpose Of The Study
- To investigate the relationship between SvO2, the Hoffman index, and cerebral NIRS (NIRSc) in pediatric patients.
- To evaluate the utility of noninvasive NIRS-derived measures for hemodynamic monitoring.
Main Methods
- Prospective study involving 41 pediatric patients undergoing cardiovascular surgery with cardiopulmonary bypass.
- Continuous monitoring of cerebral and renal NIRS values.
- Intermittent measurement of SvO2 upon admission and at 6 and 12 hours post-admission to the CICU.
Main Results
- The Hoffman index demonstrated a stronger overall correlation with SvO2 (r=0.72, P<.001) compared to NIRSc (r=0.55, P<.001 at 12h).
- High correlations were observed between the Hoffman index and SvO2 across different patient groups, including biventricular repair, univentricular physiology, and neonates.
- The correlation between Hoffman index and SvO2 was strongest at admission (r=0.64, P<.001).
Conclusions
- The Hoffman index, calculated using multisite NIRS, is a more reliable indicator of global perfusion and correlates better with SvO2 than cerebral NIRS alone.
- Both the Hoffman index and NIRSc can serve as valuable noninvasive tools for hemodynamic monitoring in pediatric patients after congenital heart surgery.
- These findings support the integration of NIRS technology for enhanced perioperative care in this vulnerable population.
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