BIOM 3090 Study Guide - Final Guide: Anesthesia, Reticular Formation, Premedication

• School: University of Guelph
• Department: Biomedical Sciences
• Course: BIOM 3090
• Professor: Bettina Kalisch

Document Summary

Short duration (wears off within 1-3 minutes) Easier to turn off inhalant anesthetic in emergency (like the patient stops breathing can manually ventilate) Ca(cid:374)"t re(cid:373)o(cid:448)e i(cid:374)je(cid:272)ta(cid:271)le a(cid:374)estheti(cid:272)s ((cid:373)ust be metabolized and eliminated); may depress cns too much if given all at once. Onset of effect is too slow, patient struggles through stage 2. 4 stages of anesthesia: stage of analgesia: analgesia, amnesia, euphoria, semi-consciousness, state of excitement: struggling, irregular breathing, delirium, vomiting, urination, combative behaviour, semi-consciousness, stage of surgical anesthesia: unconscious, regular breathing, no movement. If the process goes too far (increasing cns depression from stage 1 4: stage of medullary depression: breathing stops, heart stops death. General anesthetics cause unconsciousness (cid:271)ut do(cid:374)"t stop ap"s in peripheral pain pathways. Patients may awaken if large numbers of pain signals are delivered to reticular activating system. This is true of both iv and inhalant anesthetics. Analgesic is administered as part of the premedication to inhibit these signals.