These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Effect of volume used in sub-Tenon's anesthesia on efficacy and intraocular pressure in vitreoretinal surgery.
    Author: Sohn HJ, Moon HS, Nam DH, Paik HJ.
    Journal: Ophthalmologica; 2008; 222(6):414-21. PubMed ID: 18849625.
    Abstract:
    PURPOSE: To compare the effect of volumes used in sub- Tenon's anesthesia on efficacy and intraocular pressure (IOP) in vitreoretinal surgery. METHODS: A prospective clinical trial was conducted on patients undergoing sub-Tenon's anesthesia for vitreoretinal surgery. Patients were randomized to receive either 3-, 5- or 7-ml volumes of anesthetic solution. IOP were measured immediately prior to injection, immediately after injection and at 2, 5 and 10 min after injection. Pain scores were assigned using a numerical visual analogue scale immediately after surgery, and again on postoperative day 1. RESULTS: A total of 108 patients (119 eyes) were studied, including 35 eyes in the 3-ml group, 48 eyes in the 5-ml group, and 36 eyes in the 7-ml group. There were significant elevations in mean IOP following injection in all groups, and a trend for larger rises in IOP with larger volumes of anesthesia (p < 0.01). Mean IOP were elevated after injection, and reduced at all time intervals. However, the reduction in the 3-ml group took levels to preinjection amounts. There were no significant differences in patient-reported pain scores among the groups when assessed immediately after surgery or on postoperative day 1. The incidence of chemosis and high IOP elevations (>or=40 mm Hg) were more frequent in the 7-ml group (p < 0.05). CONCLUSIONS: Sub-Tenon's anesthesia is effective in vitreoretinal surgery. It would appear that a 3-5-ml volume of anesthetic is safe, when considering the associated complications.
    [Abstract] [Full Text] [Related] [New Search]