View clinical trials related to Carbon Dioxide.
Filter by:Carbon dioxide in patients on veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is eliminated via respirator as well as via the oxygenator's membrane of the ECMO machine. Consequently, monitoring of end-tidal carbon dioxide tensions is limited, which can result in marked swings towards non-physiological values. Hyper- and hypocapnia, however, can have detrimental effects on organ perfusion in a great number of patients supported with VA-ECMO. Continuous, rapidly applicable monitoring of reliable carbon dioxide measures would therefore be extremely helpful to prevent harmful deviations from the norm. The investigators therefore try to assess the accuracy and the precision of continuously measured non-invasive transcutaneous carbon dioxide partial pressures when compared with tensions determined by blood gas analysis.
Carbon dioxide insufflation during colonoscopy significantly reduces discomfort (pain, bloating and flatulence) after the procedure. So far, it has not been studied in inflammatory bowel disease patients. The study was designed to evaluate discomfort after the carbon dioxide insufflation colonoscopy in comparison to standard air insufflation colonoscopy.
Maternal hypotension is a common side effect after spinal anesthesia for cesarean delivery.Decreased vascular resistance and cardiac output, due to sympathetic blockade1and blood pooling in blocked areas of the body respectively, are main causes of spinal anaesthesia-induced hypotension during Caesarean delivery. Cardiac output, which has shown to be a better predictor of organ and placental perfusion than arterial blood pressure.Few studies have measured CO after spinal anesthesia in the maternal population.This is largely because of the lack of availability of accurate and reproducible noninvasive measurement techniques. Up to now, preventing hypotension has continued to focus on arterial blood pressure variables, fluid, and ephedrine requirements as markers of cardiovascular status, because these are more easily measured. Investgators hypothesized that CO and PetCO2, in parturients with the degree of hypotension during spinal anaesthesia, would also have a positive and significant association.
The purpose of this study is to investigate how inspiratory flow pattern influences CO2 elimination in people without primary lung disease. The hypothesis is that a long mean distribution time, caused by a long postinspiratory pause and high end-inspiratory flow, will promote CO2 exchange in the alveoli.
Endovascular repair of infrarenal abdominal aortic aneurysms (AAA) requires a contrast agent to identify the vascular anatomy and placement of the stent graft. Iodine contrast has traditionally been used, but has the potential to harm the kidneys. Another contrast agent is carbon dioxide gas. It has been proven safe to use, but the quality of the images it creates needs to be compared to iodine contrast. Patients in this study undergo the endovascular AAA repair as they normally, with the iodine contrast. At the end of surgery carbon dioxide gas contrast is given as an extra step. The images will be later evaluated.