Accession Number : AD0785735

Title :   Evaluation and Development of Electrical Anesthesia Device.

Descriptive Note : Rept. no. 5 (Final comprehensive),


Personal Author(s) : Sances,Anthony , Jr. ; Larson,Sanford J.

Report Date : 24 MAY 1974

Pagination or Media Count : 46

Abstract : A study was done in the monkey to compare sine wave electroanesthesia (EA) currents at frequencies ranging from 100 Hz to 10 kHz; dual sine wave EA currents at three separation frequencies of 100 Hz, 500 Hz and 1 kHz; biased rectangular pulses with a 10 to 20% on time and repetition rates from 30 to 1,000 pulses per second; rectangular interburst frequencies of 10 to 20% on time, repetition rates from 50 to 500, with interburst frequencies from 1 kHz to 50 kHz. Each of these waveforms was evaluated in monkeys given no drugs, Midocalm, Droperidol, Sodium Pentathol, Phenobarbital or Atropine. For the levels of drugs used the most consistent physiologic findings were obtained with the barbiturate preanesthetic drugs. For anesthesia, the average value of the 10% on time rectangular pulse was less than the 20% on time pulse. The least amount of average EA current was required for the rectangular interburst pulse currents, the next greatest amount for biased rectangular pulses, followed by the single sine wave and double sine wave currents. (Modified author abstract)

Descriptors :   *Electroanesthesia, *Bioinstrumentation, Anesthesia, Waveforms, Physiology, Monkeys, Experimental data, Drugs

Subject Categories : Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE