| 摘要 |
FIELD: medicine.SUBSTANCE: at the first stage of a subtotal vitrectomy, the vitreous body is sampled with its biochemical parameters to be analysed. In an air-free environment, the vitreous body samples are analysed to determine the following values at 37°C by means of an automatic blood gas and acid-base balance analyser: pH, partial carbon dioxide pressure pCO, actual bicarbonate ionand BE base excess/deficiency. If the ophthalmoscopic examination shows signs of exudative-proliferative reactions in the posterior eye segment, with the vitreous body pH <6.9, the partial carbon dioxide pressure pCO<8 mm Hg, actual bicarbonate concentrationmmole/l and BE<-25 mmole/l, the course of retinopathy is considered to be aggressive with a low probability of the formation of adequate visual functions in the disease outcome.EFFECT: method enables assessing the severity and potential outcome of retinopathy in newborn children as shown by analysing the acid-base balance of the vitreous body.2 ex |
