View clinical trials related to One-Lung Ventilation.
Filter by:BACKGROUND: The aim of this study is to evaluate the confirmation of double lumen tube placement with thoracic Ultrasound (USG) in thorax surgery operations with one lung ventilation. METHODS: In this prospective and observational study, 130 patients aged between 18-65 years in ASA (American Society of Anesthesiology) I-III risk class who will undergo thoracic surgery with the application of single-lung ventilation were included in the study. A double-lumen endobronchial tube was placed in the patients blindly. One-lung ventilation (OLV) was confirmed by thoracic USG by the anesthesiologist. The patient's demographic data, rapid clinical evaluation and USG data results, and intraoperative surgeon satisfaction were recorded.
The goal of this randomized clinical trial is to compare a liberal versus restrictive oxygen supply (fraction of inspired oxygen, FiO2) strategy in patients scheduled for thoracic surgery requiring one-lung ventilation during lung isolation. The primary and secondary outcome parameters are: - oxygenation of the blood after 30 minutes of one-lung ventilation, assessed by PaO2/FiO2 ratio - time to lung collapse after start of one-lung ventilation Participants in the control goup will receive an oxygen content of 100% before lung isolation, which will be subsequently decreased to achieve normoxia or mild hyperoxia (PaO2 of 75-120 mmHg). The intervention group will receive the previous, during two-lung ventilation set, oxygen content and after lung isolation oxygen supply will be increased to secure adequate oxygenation of the blood (PaO2 75-120 mmHg) during one-lung ventilation. The investigators hypothesize, that a higher fraction of inspired oxygen may impede hypoxic pulmonary vasoconstriction of the collapsed lung and thus decrease overall oxygenation performance during one-lung ventilation. Secondary endpoint will be the time to lung collapse, as a lower fraction of inspired oxygen and thus a higher nitrogen content may impede lung collapse.
The investigators' goal is to perform an observational cohort study investigating the use of oxygen reserve index (ORi) in patients undergoing elective thoracic surgery and one-lung ventilation (OLV). For this purpose, ORi values are recorded and compared to the other collected hemodynamical and oximeter parameters. The primary hemodynamic parameters include heart rate (HR) and blood pressure (BP), while; oximeter device-related parameters include peripheral oxygen saturation, perfusion index (PI), and pleth variability index (PVI). The investigators' secondary goal is to investigate relationships between these hemodynamical and oximeter parameters using statistical analysis methods.
One-lung ventilation (OLV) may cause negative changes in the oxygenation of cerebral tissue which results in postoperative cognitive dysfunction. The aim of this prospective study was to compare the potential effects of TIVA and inhalation general anesthesia techniques on cerebral tissue oxygenation and postoperative cognitive functions in patients receiving one-lung ventilation in thoracic surgery
Intraoperative protective ventilation with low tidal volumes (TV), positive end-expiratory pressure (PEEP) and possibly lung recruitment maneuvers (RMs) reduces postoperative pulmonary complications. In thoracic surgery, in one-lung ventilation (OLV), the evidence is lacking. However, in this context protective ventilation with PEEP titration is related to better intraoperative oxygenation and respiratory mechanics. It is not clear whether this strategy is associated also with better postoperative oxygenation and less postoperative pulmonary complications.
Intraoperative lung protective ventilatory strategy has been widely recognized to reduce postoperative pulmonary complications in laparotomy and laparoscopic surgeries. However, the clinical evidence and consensus for ventilatory strategy to protect the dependent lung segments during thoracic surgery that requires one-lung ventilation (OLV) is currently not available. Since lung compliance changes significantly during OLV, the levels of respiratory mechanics should be optimized to avoid barotrauma and volutrauma. This study aims to determine the optimal levels of volume-pressure dynamics during OLV and at the phase of recruitment of the independent lungs by achieving optimal lung compliance, gas exchange and hemodynamics.
The authors developed a formula for predicting the accurate depth of DLT insertion into the appropriate bronchus based on height as follows [The predicted insertion depth of left DLT (cm) equals 0.249 × (BH)0.916] [R]. That pilot study showed comparable correlations between five formulae [Brodsky et al, Bahk and Oh R, Takita et al, Chow et al, Lin]. However, that formula developed has not been validated yet. We hypothesized that previously published formula would predict the accurate depth of left-sided DLT insertion. We aimed to investigate the efficacy of this formula to estimate the optimum insertion depth of the DLT using a flexible bronchoscope and decrease the incidence of DLT displacement into the appropriate bronchus, the need for bronchoscopic adjustment, and complications including soreness of throat and mucosal injury.
Pulmonary complications are the most common complication in thoracic surgery and the leading cause of mortality.Therefore, lung protection is utmost important, and protective ventilation is strongly recommended in thoracic surgery. Protective ventilation is a prevailing ventilatory strategy in these days and is comprised of small tidal volume, limited inspiratory pressure, and application of positive end-expiratory pressure. However, several retrospective studies recently suggested that tidal volume, inspiratory pressure, and positive end-expiratory pressure are not related to patient outcomes, or only related when they influenced the driving pressure. Recently, the investigators reported the first prospective study about the driving pressure-guided ventilation in thoracic surgery. PEEP was titrated to bring the lowest driving pressure in each patient and applied throughout the one lung ventilation. The application of individualized PEEP reduced the incidence of pulmonary complications.However, that study was small size single center study with 312 patients. Thus, investigators try to perform large scale multicenter study. Through this study investigators evaluate that driving pressure-guided ventilation can reduce the incidence of postoperative pulmonary complications compared with conventional protective ventilation in thoracic surgery.
To observe the effectiveness of ultrasound-guided alveolar recruitment in thoracic surgery with one-lung ventilation(OLV).
In this study we compared the efficacy of continuous positive airway pressure (CPAP) to differential lung ventilation, in terms of patient's oxygenation, during video assisted thoracoscopic lung resection.