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Impaired Oxygen Delivery clinical trials

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NCT ID: NCT04778150 Completed - Clinical trials for Transplant; Failure, Liver

Non-Invasive Measurement of SjvO2 Using Near Infrared Spectroscopy in Patients Undergoing Liver Transplantation Surgery

Start date: June 1, 2023
Phase:
Study type: Observational

Mixed venous oxygen saturation (SvO2) is an important parameter in the management of patient during liver transplantation surgery especially during portal vein clamping. The only way to measure it is to use a pulmonary artery catheter. If the authors can show a positive relationship between invasive SvO2 measurement and noninvasive jugular venous oxygen saturation (SjvO2) measurement with VO 100 medical device, it will possible to use SjvO2 as a noninvasive surrogate of SvO2 in patients during liver transplantation surgery.

NCT ID: NCT04624009 Completed - Clinical trials for Impaired Oxygen Delivery

Non-Invasive Measurement of SjvO2 Using Near Infrared Spectroscopy in Critically Ill Patients

NIRS-SCJVO2
Start date: January 1, 2022
Phase:
Study type: Observational

ScvO2 is an important parameter in the management of critically ill patient. The only way to measure it is to have an internal jugular or subclavian central venous catheter. With this trial, the investigators want to show a positive relationship between invasive ScvO2 measurement and noninvasive SjvO2 measurement with VO 100 medical device from Mespere LifeSciences, allowing the use of SjvO2 as a noninvasive surrogate of ScvO2 in critically ill patients.

NCT ID: NCT03355118 Completed - Surgery Clinical Trials

Oxygen Extraction and Delivery in Elderly During Major Surgery

Start date: November 27, 2017
Phase:
Study type: Observational

This clinical observational study investigates perioperative oxygen consumption and delivery in elderly patients undergoing major surgery. The primary objectives are to characterise the perioperative oxygen delivery, consumption and potential markers of oxygen debt. Secondary objective is to estimate the correlation between oxygen delivery/consumption and postoperative outcomes to guide the design of a future trial.

NCT ID: NCT02605005 Completed - Cerebral Hypoxia Clinical Trials

The Impact of a Beach Chair Position During Shoulder Arthroscopy on Regional Cerebral Oxygen Saturation : Comparison of Interscalene Block and General Anesthesia

Start date: December 2013
Phase: N/A
Study type: Observational

The aim of this study is to investigate the relationship between the patient positioning in the beach chair position with consequential arterial pressure changes and their influence on regional cerebral oxygen saturation under two anesthesia techniques, general anesthesia in one group of patients and interscalene block in the second group of patients.

NCT ID: NCT01826253 Completed - Hypovolemia Clinical Trials

Observational Study of Oxygen Delivery During a Fractional Fluid Expansion

OR
Start date: April 2013
Phase: N/A
Study type: Observational

Fluid expansion during cardiocirculatory insufficiency was helped by cardiac output monitoring. However, the goal of fluid expansion was to increase the oxygen delivery, which consider cardiac output, but also Haemoglobin which decrease during a fluid challenge. The maximalization of cardiac output could decrease the oxygen delivery if the haemodilution was too wide. The aim of this study was to describe the oxygen delivery during a fluid expansion conducted for cardiac output maximalization, following actual guidelines.

NCT ID: NCT01484886 Completed - Clinical trials for Congenital Heart Disease

Restrictive Versus Liberal Transfusion Protocol in Infants Undergoing Cardiac Surgery

Start date: January 2012
Phase: N/A
Study type: Interventional

In neonates and infants </= 10 kg following cardiac surgery for congenital heart disease a more restrictive red blood cell (RBC) transfusion strategy will be as effective as, and possibly superior to, a liberal RBC strategy. Allowing lower hemoglobin concentration will not affect the cardiac or pulmonary status of the patient.

NCT ID: NCT01454128 Completed - Clinical trials for Ischemic Reperfusion Injury

The Role of Exercise-Periodic-Breathing (EPB) in Impaired Ventilation Regulation Dysfunction in Heart Failure Patients

Start date: April 2011
Phase: N/A
Study type: Interventional

Heart failure (HF) is a complex syndrome characterized by myocardial dysfunction and an impaired regulatory function of multiple organ systems which were resulted from impaired cardiac output and consequently impaired perfusion of target organ. In cardiopulmonary exercise test (CPET), the investigators found there is periodic oscillation in minute ventilation of some patient. With periodic breathing (PB), clear oscillations in oxygen uptake, carbon dioxide output, tidal volume and left ventricle ejection fraction (LVEF) were also noted. Exertional hyper-ventilation that is caused by HF may further induce vasoconstriction during exercise and lead to further dysfunction of end-organ and muscle. Reduced end-organ perfusion/oxygenation may critically limit exercise performance. Hypoxic change during nadir phase of PB may deteriorate the exercise limitation. Physical training can have beneficial effects which can effectively counteract the progression of deleterious compensatory mechanisms of HF. Whether exercise yields the same beneficial effect on ventilation oscillation and inefficacy is not clear. The investigators will observe the real-time cardiac and hemodynamic change respond to exercise with periodic breathing change. The investigators expect that these results obtained from this study can aid in determining appropriate exercise intervention to improve aerobic fitness as well as simultaneously improve hemodynamic control in patients with HF. A quasi-experimental design will be used in this investigation. 60 HF patients will be recruited from Chang Gung Medical Foundation, Keelung Branch after they have provided informed consent. These subjects will be divided into PB (n=30) and non-PB groups (n=30) by their expression of CPET. Patients from each groups received the same therapy and trace course for 2years including CV clinics, CPET and polysomnography. The investigators will measure subjects' physical fitness, oxygen transport and utilization of exercising skeletal muscles, cardiovascular functions and hemodynamics, blood cell parameters, RBC deformity and aggregation, plasma biomarkers of myocardial damage, oxygen stress and quality of life at pre-training stage and following the 6th , 12th, 18th, 24th months of the tracing program. Experimental results were analyzed by descriptive statistics, independent t-test, and repeated measure ANOVA. The investigators study the above parameter to realize the physiological response to exercise of these patients and discover the appropriate exercise intensity for prescription for EPB.