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[Peripheral blood perfusion during desflurane anaesthesia].
Anna Fijałkowska1, Michał Kowalczyk
1Klinika Anestezjologii i Intensywnej Terapii, Uniwersytet Medyczny w Lublinie. afijal@poczta.onet.pl
Anestezjologia Intensywna Terapia
|July 9, 2010
Summary
New pulse oximeters can assess peripheral blood flow during surgery. Perfusion index (PI) increased with desflurane anesthesia and correlated with anesthesia depth.
Area of Science:
- Anesthesiology
- Critical Care Medicine
- Medical Devices
Background:
- Assessing peripheral perfusion during anesthesia is challenging.
- New pulse oximeters can differentiate pulsatile and non-pulsatile flow, providing a Perfusion Index (PI).
Purpose of the Study:
- To evaluate the utility of a new generation of pulse oximeters for assessing peripheral perfusion.
- To investigate the relationship between Perfusion Index (PI) and anesthesia depth during desflurane anesthesia.
Main Methods:
- Elective gynecologic surgery patients (ASA I/II) received fentanyl/desflurane anesthesia.
- Perfusion Index (PI) was measured at various time points.
- Anesthesia depth was assessed using A-line Autoregressive Index (AAI) and compared with PI.
Main Results:
- Forty-five patients were studied; PI increased post-anesthesia induction and during surgery.
- A significant negative correlation was found between PI and AAI (r = -0.908; p < 0.001).
- PI positively correlated with end-tidal desflurane concentration (r = +0.757; p = 0.002).
Conclusions:
- New pulse oximeters offer accurate assessment of peripheral blood flow.
- Peripheral perfusion is elevated during desflurane anesthesia.
- Perfusion Index (PI) closely relates to anesthesia depth.
