Somatosensory evoked potentials by median nerve stimulation in children during thiopental/sevoflurane anesthesia and the additive effects of ketoprofen and fentanyl

Anesthesia and Analgesia
S Westerèn-PunnonenH Kokki

Abstract

Somatosensory evoked potentials (SEPs) are used to determine the spinal cord and brain function during surgical procedures. In general, SEPs are sensitive to volatile anesthetics, but little is known about the effects of anesthesia maintenance with sevoflurane on SEPs in children. Analgesics are often provided during anesthesia, and supplementary drugs may also affect the SEPs. In this prospective clinical trial of 27 healthy, 3- to 8-yr-old children, we evaluated the effects of sevoflurane anesthesia after IV induction with benzodiazepine and barbiturate on median nerve SEP. In addition, the effects of two analgesics (ketoprofen and fentanyl) on SEPs were evaluated. Median nerve SEPs were recorded before premedication with midazolam 0.1 mg/kg IV, and at three separate times during anesthesia maintenance with sevoflurane 2% end-tidal concentration in air/oxygen (after 15 min of sevoflurane inhalation), supplemented with/without ketoprofen 1 mg/kg (after 25 min) and fentanyl 1 microg/kg (after 35 min). Compared with baseline measurements, an increase both in N20 latency (P = 0.015) and in central conduction time (P = 0.001) was noted during anesthesia maintenance with sevoflurane. The administration of analgesics did not have an...Continue Reading

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Citations

Feb 13, 2013·Pain Research and Treatment·Joel S Goldberg
Jan 3, 2012·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Calixto MachadoGerry Leisman
Jul 2, 2020·Minerva anestesiologica·Rossella Garra, Carmela Riso
Mar 29, 2019·Anesthesiology·Brian J Anderson, Oliver Bagshaw

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