Session Title: Vitreoretinal Surgery III
Session Date/Time: Friday 27/09/2013 | 11:00-12:30
Paper Time: 12:04
Venue: Hall 3 (Level 0)
First Author: M.Sin CZECH REPUBLIC
Co Author(s): O. Chrapek I. Sinova J. Rehak
To determine the effect of pars plana vitrectomy (PPV) on oxygen saturation in retinal vessels.
prospective, pilot, interventional case series
We performed a prospective, pilot, consecutive, interventional case series. The sample consisted of 20 eyes of 20 patients with macular hole or epiretinal membrane in whom we performed PPV (classic 20G or sutureless 23G). 24 hours before surgery we performed automatic retinal oximetry (Oxymap inc., Reikjavik, Island) in each patient. The same measurement was taken in each patient 45 days (range 42-49) after the vitrectomy.
The mean pre-vitrectomy arterial saturation was 98% (SD 2%) and mean post-vitrectomy arterial saturation was 98% (SD 3%), (p = 0.594). The mean oxygen saturation in venous blood before vitrectomy was 63% (SD 10%) and after vitrectomy the mean retinal saturation was 66% (SD 8%), (p = 0,012).
Oxygen saturation was higher in retinal veins after pars plana vitrectomy.