[Drugs for supplementation in cataract surgery with a laryngeal mask].
BACKGROUND
We compared intraocular pressure (IOP), vitreous pressure and several anaesthesiological parameters for patients who underwent cataract surgery with propofol anaesthesia, laryngeal mask and different supplementations with reference to the effect of S-ketamin in particular.


METHODS
In 4 groups with 15 patients cataract surgery (phacoemulsification) was carried out using anaesthesia with propofol, laryngeal masks and spontaneous breathing if possible, supplementation with propofol (0.6 mg/kg, group 1), S-ketamin (0.3 mg/kg, group 2), ketamin (0.6 mg/kg, group 3) or fentanyl (0.5 microgram/kg, group 4); IOP measurement with tonopen XL and scoring vitreous pressure at different times during anaesthesia (score 0-3).


RESULTS
For IOP and vitreous pressure, none of the different supplementations showed a significant difference. Insertion of the laryngeal mask did not cause a rise in intraocular pressure. The number of patients with spontaneous breathing during the operation in group 4 was significantly lower than in groups 1-3. No significant differences were observed between the different anaesthesiological parameters.


CONCLUSIONS
S-Ketamin had no significant effect on IOP and vitreous pressure during phacoemulsification. It offers a safe "handling" of patients because of a high spontaneous breathing rate and lower concentration compared to Ketamin.
Becker
R
R
Zentrum für Augenheilkunde der Justus-Liebig-Universität Giessen, Germany. ralph-becker@web.de
Schmidt
W
W
Viehl
H
H
Rupp
D
D
D000368:Aged; D000768:Anesthesia, General; D004305:Dose-Response Relationship, Drug; D005260:Female; D005283:Fentanyl; D006801:Humans; D007429:Intraocular Pressure / Q000187:drug effects*; D007649:Ketamine; D017214:Laryngeal Masks; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000295:instrumentation; D015742:Propofol; D011446:Prospective Studies; D019998:Racemases and Epimerases; D014822:Vitreous Body / Q000187:drug effects
D007649:Ketamine; D019998:Racemases and Epimerases; D005283:Fentanyl; D015742:Propofol