View clinical trials related to Hemodynamics.
Filter by:Delta Pulse Pressure and Delta Down have been validated in surgery upon closed chest. This study aim to evaluate the influence of sternotomy on the value of Delta Pulse Pressure and Delta Down.
This study is designed to investigate the cardiovascular response (blood pressure, heart rate, electrocardiographic response and blood vessel reactivity response) to taking Adderall in healthy adults.
In this study we would like to monitor cardiac output by the use of NICAS bioimpedance in women undergoing cesarean section delivery. This study is a purely observational study, it will not have any clinical intervention nor will it interfere with standard cesarean delivery protocols in any way. This study's primary objective is to evaluate how spinal and general anesthesia influences cardiac output during cesarean section deliveries. Secondary endpoints is whether the hemodynamic changes as measured in cardiac output correlate with women's pain, measured by a visual analogue scale(VAS) from o-10. (0=representing no pain at all, 10= worse pain imaginable)
The ideal induction agent for day care surgery should have properties of rapid, smooth induction, better haemodynamic profile, faster recovery and devoid of side effects in the form of pain on injection, involuntary movements, respiratory depression and post-operative nausea/vomiting. Propofol is the drug being used for day care surgeries because of its rapid, smooth induction and faster recovery. But its use is associated with pain on injection (even with added lidocaine), hypotension and respiratory depression. So the need for an agent with better hemodynamic control and lesser side effects was felt. The introduction of etomidate lipuro revolutionised the anaesthesia practice. It possesses many of the properties of an ideal induction agent. This newer formulation of etomidate in lipid emulsion i.e. etomidate lipuro is known to have rapid, smooth induction, haemodynamic stability and lesser side effects than older etomidate with propylene glycol (hypnomidate). Hence, investigators devised a prospective randomized controlled open trial and compared this newer lipid formulation of etomidate with propofol in terms of - induction time, haemodynamic parameters and side effect profile.
To overcome the limited accuracy of functional hemodynamic parameters such as stroke volume and pulse pressure variation (SVV and PPV) during spontaneous breathing, a Passive Leg Raising (PLR) manoeuvre has been suggested as a reliable predictor of fluid responsiveness. Aim of this study was to evaluate fluid responsiveness using SVV, PPV and PLR during the transition from controlled to spontaneous breathing in cardiac surgery patients
Cardiologists and intensive care specialists are confronted daily with mechanically ventilated patients exhibiting cardiac failure. It is of paramount importance to understand the effect of mechanical ventilation on cardiac function and to interpret echocardiographic findings correctly in order to provide the patient with the best possible treatment to support cardiac and circulatory function. Currently physicians interpret echocardiographic findings based on studies that were performed in spontaneously breathing patients. With this study, the investigators intend to contribute to the understanding of cardiac physiology in patients needing ventilatory support, especially they aim to provide the physiological basis for the interpretation of echocardiographic findings in order to improve medical support (e.g. fluid resuscitation, vasoactive drugs, ventilation strategy) of ventilated patients with impaired cardiovascular function.
Primary: To observe how hemodynamic parameters are affected by age during rest and exercise in healthy humans. Furthermore, how an acute fluid challenge changes hemodynamic parameters. Secondary: To thoroughly examine this population with regard to cardiac performance and function, anthropometrics, metabolic status, exercise capability, constitution, pulmonary status, and humoral markers of organ functions. This population will serve as a healthy control group, to which different populations can be compared, hence the need for a comprehensive characterization. Hypotheses: Diastolic function and parameters associated with diastolic function gradually deteriorate with increasing age. The gradual deterioration is unmasked at an earlier age during exercise and fluid challenge, compared to measurements made at rest.
This study is being done to look at the cardiovascular response, if any, to intake of commercially available energy drink. We hypothesize that energy drink consumption compared to a control drink in healthy adults alters the cardiovascular hemodynamic system.The focus of this study is to elucidate the physiological/cardiovascular response to an energy drink consumption as compared to a control drink both at rest and during stressful conditions in healthy adults.
In this trial, the investigators intend to examine whether the concentration of local anesthetics during epidural analgesia could be modulating factor for change of hemodynamics in patients undergoing major upper abdominal surgery.
The ideal mean arterial pressure in patients with septic shock is unknown. The expert's recommandations have stated a target between 65 and 70 mm Hg. However the scientific basis are weak. Indead there are only few prospective studies which addressed this question without clear answer. Therefore we designed a RCT in order to assess the effect on mortality of two levels of mean arterial pressure in patients with septic shock.(800 patients, 30 centres)