About: The effect of pars plan vitrectomy on oxygen saturation in retinal vessels

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Purpose: To determine the effect of pars plana vitrectomy (PPV) on oxygen saturation in retinal vessels. Methods: We performed a prospective consecutive interventional case series of 20 eyes of 20 patients with macular hole or epiretinal membrane. We performed automatic retinal oximetry (Oxymap Inc., Reykjavik, Iceland) in each patient 24 hr prior to and 45 days (range 42-49) after PPV (classic 20G or sutureless 23G). We analysed oxygen saturations in retinal arteries and veins. Vessel segments of first or second degree were selected. The same segment was analysed before and after PPV. Oximetry data were compared by paired two-tailed t-test. Results: Pars plana vitrectomy did not alter arterial haemoglobin saturation with oxygen (98 +- 2% prior to the surgery and 98 +- 3% after the procedure, (p = 0.549). The mean venous haemoglobin saturation with oxygen increased after vitrectomy from 63 +- 10% to 66 +- 8% (p = 0.012). Conclusions: Oxygen saturation is higher in retinal veins after pars plana vitrectomy. Further studies are needed to unveil the mechanism of how vitrectomy affects oxygen metabolism in the retina. Purpose: To determine the effect of pars plana vitrectomy (PPV) on oxygen saturation in retinal vessels. Methods: We performed a prospective consecutive interventional case series of 20 eyes of 20 patients with macular hole or epiretinal membrane. We performed automatic retinal oximetry (Oxymap Inc., Reykjavik, Iceland) in each patient 24 hr prior to and 45 days (range 42-49) after PPV (classic 20G or sutureless 23G). We analysed oxygen saturations in retinal arteries and veins. Vessel segments of first or second degree were selected. The same segment was analysed before and after PPV. Oximetry data were compared by paired two-tailed t-test. Results: Pars plana vitrectomy did not alter arterial haemoglobin saturation with oxygen (98 +- 2% prior to the surgery and 98 +- 3% after the procedure, (p = 0.549). The mean venous haemoglobin saturation with oxygen increased after vitrectomy from 63 +- 10% to 66 +- 8% (p = 0.012). Conclusions: Oxygen saturation is higher in retinal veins after pars plana vitrectomy. Further studies are needed to unveil the mechanism of how vitrectomy affects oxygen metabolism in the retina. (en)
Title	The effect of pars plan vitrectomy on oxygen saturation in retinal vessels - a pilot study The effect of pars plan vitrectomy on oxygen saturation in retinal vessels - a pilot study (en)
skos:prefLabel	The effect of pars plan vitrectomy on oxygen saturation in retinal vessels - a pilot study The effect of pars plan vitrectomy on oxygen saturation in retinal vessels - a pilot study (en)
skos:notation	RIV/61989592:15110/14:33152328!RIV15-MSM-15110___
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Langová, Kateřina Řehák, Jiří Chrapek, Oldřich Karhanová, Marta Šín, Martin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Lékařská fakulta
http://linked.open...dnocenehoVysledku	13437
http://linked.open...ai/riv/idVysledku	RIV/61989592:15110/14:33152328
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	retinal vessel blood saturation; retinal blood flow velocity; pars plana vitrectomy; oxygen saturation (en)
http://linked.open.../riv/klicoveSlovo	retinal blood flow velocity retinal vessel blood saturation oxygen saturation pars plana vitrectomy
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[D1FBD61FB840]
http://linked.open...i/riv/nazevZdroje	Acta Ophthalmologica
http://linked.open...in/vavai/riv/obor	FF
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	92
http://linked.open...iv/tvurceVysledku	Langová, Kateřina Chrapek, Oldřich Řehák, Jiří Šín, Martin Karhanová, Marta Prachařová, Zuzana Šínová, Irena
issn	1755-375X
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1111/aos.12238
http://localhost/t...ganizacniJednotka	15110

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