Responses of the second derivative of the finger photoplethysmogram indices and hemodynamic parameters to anesthesia induction

Hypertens Res. 2012 Feb;35(2):166-72. doi: 10.1038/hr.2011.152. Epub 2011 Sep 22.

Abstract

The finger photoplethysmogram (PTG) is a non-invasive method for pulse-wave analysis. The second derivative wave of the PTG (SDPTG) enables evaluation of atherosclerosis and cardiovascular aging. Responses of SDPTG indices and hemodynamic parameters to anesthesia induction are unknown. A total of 42 patients aged 40 years, who may have had atherosclerotic change, and who underwent elective oral surgery, were analyzed. Patients were divided into sevoflurane (S group; N=22) and sevoflurane with remifentanil (R group; N=20) groups. Systolic and diastolic blood pressure (SBP, DBP), heart rate (HR) and SDPTG were measured at four time points: before induction, after loss of consciousness, after tracheal intubation and 30 min after induction. At postintubation, b/a was elevated (that is, large arterial stiffness was increased), and d/a was reduced (that is, peripheral vascular resistance was increased) in the S group compared with the R group. SBP, DBP and HR were increased in the S group compared with those in the R group. In the S group, preanesthetic b/a and the aging index (AGI) were positively correlated with SBP at immediate postintubation, and preanesthetic d/a was negatively correlated with SBP and DBP at immediate postintubation. It is suggested that usage of remifentanil, a potent μ-opioid analgesic, with sevoflurane anesthesia prevented an increase in blood pressure and HR in response to laryngoscopy and tracheal intubation, which was accompanied by suppression of both elevation of b/a and the AGI and reduction of d/a. SDPTG indices are useful for predicting hypertension during induction of sevoflurane anesthesia, regardless of a history of hypertension or hypertensive factors.

MeSH terms

  • Adult
  • Aged
  • Aging / physiology
  • Anesthesia*
  • Anesthetics, Inhalation
  • Anesthetics, Intravenous / pharmacology
  • Area Under Curve
  • Blood Pressure / physiology
  • Female
  • Fingers / blood supply*
  • Heart Rate / physiology
  • Hemodynamics / physiology*
  • Humans
  • Intubation, Intratracheal
  • Male
  • Methyl Ethers
  • Middle Aged
  • Oral Surgical Procedures
  • Photoplethysmography / statistics & numerical data*
  • Piperidines / pharmacology
  • ROC Curve
  • Regional Blood Flow / physiology
  • Remifentanil
  • Sevoflurane

Substances

  • Anesthetics, Inhalation
  • Anesthetics, Intravenous
  • Methyl Ethers
  • Piperidines
  • Sevoflurane
  • Remifentanil