View clinical trials related to Cardiac Output.
Filter by:This study evaluates the cardiovascular effects of adding the ketone body 3-hydroxy butyrate (3-OHB) to whey protein during human endotoxemia. Further, this study compares cardiovascular changes during healthy and catabolic conditions. Participants will receive isocaloric, isonitrogenous beverages of either whey or 3-OHB+whey in a randomized crossover design during either healthy (overnight fast) or catabolic conditions (inflammation/endotoxemia + 36 h fast and bed rest).
Cardiac output (CO) monitoring is often required for clinical evaluation and management in critically ill patients and during anesthesia. There are many methods to measure CO. Fick-based CO estimation (Fick-CO) is one of the most commonly used methods, while thermodilution (TD-CO) is viewed as golden standard. But Fick-CO is still widely used, especially in catheterization laboratories and pediatric cardiologic department, whose patients often with congenital heart disease. Multiple studies from the 1960s find a strong correlation between TD-CO and Fick-CO. However, more recent studies reject the conclusion. Since Fick-CO is the ratio of oxygen consumption (V'O2) to the arteriovenous difference in oxygen content, many parameters are included in the Fick equation, such as V'O2, hemoglobin (Hb), arterial oxygen saturation (SaO2), mixed venous oxygen saturation (SvO2), partial pressure of arterial oxygen (PaO2), and mixed venous oxygen tension (PvO2). Any changes of each parameter may influence the accuracy of Fick-CO calculation. This may be the reason why it remains controversial whether Fick-CO and TD-CO are interchangeable or not. Although there are lots of studies comparing Fick-CO and TD-CO, discussing the impact of V'O2 on Fick-CO, how the other parameters influence the final CO estimation are rarely focused. Therefore, the purpose of this study was to assess the influence of FIO2 on PaO2, SvO2, PvO2, and the accuracy of Fick-CO in cardiac surgery patients.
Physioflow® is a new device for measuring cardiac output in a non-invasive way using a thoracic bioimpedance technique. This technique has been validated in patients in stress tests as well as in Chronic Obstructive Pulmonary Disease (COPD) patients, in obese patients and in children. Very little work has been published in intensive care unit (ICU) and no studies have been done on hemodynamically unstable patients. The aim of this work is to compare the cardiac output measured by Physioflow® to the transthoracic echocardiography (TTE) in ventilated, sedated patients hospitalized in ICU receiving catecholamines and for whom the attending physician wants to evaluate the fluid responsiveness using the TTE and a passive leg raising maneuver (PLR).
This study evaluates the role of arterial tone in the accuracy of cardiac output (CO) measurement by Pressure Recording Analytical Method (PRAM). Patients receiving noradrenaline who need for clinical reason to change the noradrenaline dose will be enrolled. We use echocardiography as reference method of CO measurement.
Continuous perioperative cardiac output (DC) and blood pressure (PA) monitoring contributes to hemodynamic stability and ensures adequate perfusion pressure, resulting in a reduction in morbidity and mortality and length of hospital stay. The monitors usually used in perioperative are either semi-invasive and difficult for calibration (oesophageal Doppler) or invasive (arterial catheter). The Nexfin HD allows these two measurements and it is completely non-invasive, remains to validate its use in peroperative.
This prospective and observational cohort studies the morphine consumption difference during the first 48 hours after a lung lobectomy between patients operated with a robot assisted or a video-assisted technique for a lung cancer lobectomy. Second outcome was to search eventual cardiac output difference during the surgery in 100 patients (50 in each group) using a non invasive monitoring device of cardiac output All patients operated between january 2016 and March 2017 for a lung cancer lobectomy were included.
The aim of the study is to investigate the effect of different angles of lateral tilt on the maternal hemodynamics before and after spinal anesthesia
Spinal block leads to the reduction of systemic vascular resistance (SVR) which may effect the cardiac output. Ngan Kee et al. has showed that spina block with 0.5% hyperbaric bupivacaine for Cesarean section combined with intravenous infusion norepinephrine had higher cardiac output than those who received phenylephrine
The aim of the present study is to compare accuracy and precision of Cardiac Output (CO) by nine different pulse contour algorithms with transpulmonary thermodilution before and after cardiopulmonary bypass (CPB).
Ondansetron is a medication routinely given to mothers having cesarean deliveries to help prevent and treat nausea and vomiting. The investigators are studying the hemodynamic effects of prophylactic ondansetron on parturients undergoing elective cesarean deliveries under spinal anesthesia.