A comparison and visual and auditory assessments of recovery from general anesthesia
| Autor: | J.D. Smith, E.B. Perrin, Gerald D. Allen |
|---|---|
| Rok vydání: | 1967 |
| Předmět: |
Auditory perception
medicine.medical_specialty Visual acuity Visual test business.industry Vomiting Hearing Tests Vision Tests Nausea Audiology Anesthesia General Pathology and Forensic Medicine Flicker Fusion Orthostatic vital signs Recovery period Cerebral activity Anesthesia medicine Humans Premedication medicine.symptom Hypotension business General Dentistry Postoperative nausea and vomiting |
| Zdroj: | Oral surgery, oral medicine, and oral pathology. 23(5) |
| ISSN: | 0030-4220 |
| Popis: | A clinical investigation was conducted to assess the value of utilizing the special sensory functions of vision and/or hearing in determining complete recovery from anesthesia. Eighty patients were divided equally between assessments of auditory and visual acuity to preoperative levels as end points. Auditory perception was determined on the basis of verbal response evoked by a human voice. Visual acuity and cerebral activity were assessed by flicker-fusion thresholds. Ten patients in each phase of the project were given either (A) halothane-oxygen, (B) halothane-nitrous oxide-oxygen, (C) thiopental for induction followed by halothane-nitrous oxide-oxygen, or (D) premedication and thiopental for induction followed by halothane-nitrous oxide-oxygen. The mean duration of anesthesia for the entire project was 31.8 minutes. In none of the cases did recovery from anesthesia exceed 90 minutes, as assessed by either visual or auditory acuity. Within 20 minutes of the termination of anesthesia, 92.5 per cent of the patients were fully recovered when auditory acuity was used as the criterion, whereas only 20 per cent were determined to be awake when CFF was used to measure recovery. No significant correlations were found between mode or duration of anesthesia and recovery time. The data suggest that recovery is most rapid following halothane-nitrous oxide-oxygen anesthesia, whereas halothane-oxygen produces the longest recovery period. There was a 12 per cent incidence of postoperative nausea and vomiting when the patients were rapidly ambulated in Phase II; this was directly related to orthostatic hypotension. It can be concluded that a visual test is a more appropriate measurement of recovery from anesthesia than a test of hearing. |
| Databáze: | OpenAIRE |
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