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Pediatric blood pressures during anesthesia assessed using normalization and principal component analysis techniques.

Michael J Harrison1, Christopher W Connor2, David Cumin3

  • 1Department of Anaesthesiology, Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland, New Zealand. michael.harrison@auckland.ac.nz.

Journal of Clinical Monitoring and Computing
|September 30, 2018
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Summary

This study analyzed pediatric blood pressure changes during anesthesia, finding significant variations in cardiac and non-cardiac surgery patients. These insights aid in understanding pediatric anesthesia

Keywords:
Blood pressureGeneral anesthesiaMonitoringNormalizationPediatricsPrincipal component analysis

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Area of Science:

  • Pediatric Anesthesiology
  • Cardiovascular Physiology
  • Medical Statistics

Background:

  • Established blood pressure norms exist for unanesthetized and anesthetized children.
  • Statistics on blood pressure fluctuations during pediatric anesthesia, crucial for diagnostics, are largely unreported.
  • Understanding these variations is key for safe anesthetic management in pediatric surgical patients.

Purpose of the Study:

  • To quantify and report variations in blood pressure changes during anesthesia across four pediatric age groups.
  • To differentiate these variations between pediatric cardiac and non-cardiac surgical cases.
  • To establish a baseline for identifying statistically significant blood pressure deviations during pediatric anesthesia.

Main Methods:

  • Utilized an electronic dataset of intra-arterial pediatric blood pressure measurements during anesthesia.
  • Applied normalization and principal component analysis techniques for data interpretation.
  • Analyzed data separately for pediatric cardiac and non-cardiac surgical cases.

Main Results:

  • Systolic blood pressure generally increased with age in both non-cardiac and cardiac surgery patients.
  • Short-term (30s) blood pressure changes were minimal across age groups and surgical types.
  • Longer-term (5-min) blood pressure variations showed wider ranges, particularly in older pediatric patients and those undergoing cardiac surgery.

Conclusions:

  • Absolute blood pressures and their dynamic changes during anesthesia in pediatric surgical patients have been quantitatively analyzed.
  • Normalization and principal component analysis effectively identify statistically significant blood pressure alterations.
  • This research provides a foundation for improved monitoring and diagnostic interpretation of blood pressure during pediatric anesthesia.