Occurrance of perioperative hypoxemia during one lung ventilation

Abstract

Background: One Lung Ventilation (OLV) remains standard procedure for thoracic surgery. However, this procedure increases the risk of hypoxemia and desaturation that can influence patients’ mortality and morbidity. The aim of this study was to evaluate the occurrence of desaturation SpO2. <93% in patients going pulmonal resections and to analyze the patients’ profiles. Material and Method: In a retro-prospective study were included all data of patients who underwent OLV for segmentectomy, lobectomy and bilobectomy, ASA I-III, with EF>50%, FEV1 >40%, PaO2 >60mmHg and who went standardized anesthesia protocol. Patients with prior radio or chemotherapy, with renal, hepatic, endocrine and coagulations disturbances were excluded. In all patients we evaluated demographics, clinical data, surgery data and the occurrence of desaturation (SpO2 <93%), 10 minutes, 30 and 40 minutes after OLV. Results: Desaturation occurred in 20% of the patients 10 minutes after the OLV, in 32.5% of the patients in the 30th and in 25% of the patients after the 40th minute. Significant number of patients underwent right sight lobectomy. In none of the patients OLV was stopped and no lethal outcome was registered. Conclusion: In our study desaturation occurred from 20-32.5% of the patients who underwent OLV during the first 40 minutes in respect to the time. Desaturation mainly occurred in patients with right thoracotomy.