[Comparative study between propofol and isoflurane as a maintenance anesthetic in ambulatory surgery].
OBJECTIVE
To evaluate postanesthetic recovery and complications in outpatient surgery for which anesthetic maintenance was achieved with either isoflurane or propofol.


METHODS
Eighty patients were randomly divided into two groups for prospective study according to anesthetic used: isoflurane (group A) or propofol (group B). The patients were undergoing short surgery and in both groups induction was with 2-2.5 mg/kg propofol, 0.4-0.5 mg/kg atracurium, 20 microgram/kg alfentanil and 20 microgram/kg droperidol. In 40 patients maintenance was with 0.5-1% isoflurane (group A) and in the remaining 40 0.1-1.15 mg/kg/min propofol (group B) was used; in both groups 50% N2O-O2 was used.


RESULTS
We found no statistically significant differences in time until eye opening after a verbal command (3.8 +/- 2 in group A and 4.1 +/- 2.8 min in group B), in time until the patient was able to answer five questions (6.5 +/- 3 in group A and 6 +/- 2.9 min in group B) or in Aldrete test scores upon awakening (9 +/- 1 in group A and 8.7 +/- 0.9 in group B). Nor were there differences in frequency of nausea reported (2 in each group) or in level of pain after surgery.


CONCLUSIONS
Recovery and incidence of complications after out-patient anesthesia were similar when anesthetic maintenance was achieved with propofol or isoflurane.
Moriano
E
E
Servicio de Anestesiología y Reanimación, Complejo Hospitalario de Salamanca, Hospital Virgen de la Vega.
Espinel
C
C
Díaz-Alvarez
A
A
Barrientos
M T
MT
Frayle
E
E
el Busto
J J
JJ
D000328:Adult; D015760:Alfentanil / Q000008:administration & dosage / Q000009:adverse effects; D000556:Ambulatory Surgical Procedures; D000762:Anesthesia Recovery Period; D001279:Atracurium / Q000008:administration & dosage / Q000009:adverse effects; D004329:Droperidol / Q000008:administration & dosage / Q000009:adverse effects; D005260:Female; D006801:Humans; D007530:Isoflurane / Q000008:administration & dosage / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D009325:Nausea / Q000139:chemically induced; D009609:Nitrous Oxide / Q000008:administration & dosage; D015742:Propofol / Q000008:administration & dosage / Q000009:adverse effects; D011446:Prospective Studies
D015760:Alfentanil; D001279:Atracurium; D007530:Isoflurane; D009609:Nitrous Oxide; D004329:Droperidol; D015742:Propofol
Estudio comparativo entre propofol e isoflurano como mantenimiento anestésico en cirugía ambulatoria.