View clinical trials related to Cardiac Output, High.
Filter by:Heart failure is a special clinical syndrome such as difficulty breathing, fatigue, and swollen legs characterized by increased JVP, crackle lung sounds, and peripheral edema caused by heart disorders both structural and/or functional, resulting in decreased cardiac output and increased intracardiac pressure at rest and activity. Body positioning has been shown to affect stroke volume and parasympathetic modulating activity. The right lateral 30" semifowler position is a very safe position in heart failure patients admitted to the ICU. Although body positioning can affect stroke volume, and parasympathetic modulation, it is not yet clear what effect it has on cardiac output
fluid resuscitation is one of the bases of strategies in ICU to take in charge patients , one of the technique to evaluate preload charge , is Passive leg raising, that allows reliable prediction of fluid responsiveness even in patients with spontaneous breathing activity or arrhythmias . In recent years, hemodynamic response to passive leg raising (PLR) has been popularized as a dynamic test of preload responsiveness [1]. This manoeuvre provides an "auto-fluid challenge" which is rapid, transient and reversible. PLR transfers blood contained in the venous reservoir of the lower extremities to the central venous compartment leading to a transient increase in preload and an increase in cardiac output by Frank-Starling mechanism in preload responsive individuals. untille now the usseuful of PLR in Pregnancy, and also The validity of dynamic measurements of preload to predict fluid response during pregnancy are note clear in littérature .
The use of catecholamines for blood pressure and hemodynamic management is essential during undergoing surgery. The type of the catecholamine with the most clinical meaningful effect is still unknown. Therefore, the investigators evaluate the effect of intraoperative continuous infusion of epinephrine, norepinephrine and phenylephrine on intraoperative cardiac output. The investigators further evaluate the effect of epinephrine, norepinephrine and phenylephrine on regional brain and regional tissue oxygenation during surgery.
The aim of the project is to evaluate the effect of hypercapnia on physiological parameters in a healthy person during short-term hypoxia and hypercapnia.
The investigation will enroll subjects who have been previously implanted with the CardioMEMS™ Pulmonary Artery Sensor. This clinical investigation is twofold; in the first phase (development phase) data collected will be used to complete development of an algorithm that can estimate cardiac output from CardioMEMS™ Heart Failure System readings. The second phase (validation phase) of this clinical investigation is intended to compare the Cardiac Output estimate from CardioMEMS HF System to Cardiac Output estimates from Cardiac Magnetic Resonance Imaging (reference standard).
Biomarkers can play a significant role in fluid status assessment intraoperatively.
Invasive pulmonary capillary wedge pressure measurements using a Swan-Ganz catheter (SGC) is considered the gold standard for cardiac output (CO) monitoring. In this prospective study, we will compare CO measurements between a PPG-based wearable monitor and a SGC in ambulatory CHF patients.
Mixed venous saturation (SvO2) is an indicator of the balance between oxygen supply and demand in the body's tissues Recently, our research team published a paper describing the possibility to continuously monitor SvO2 by the use of continuous dynamic capnography (Karlsson et al, A Continuous Noninvasive Method to Assess Mixed Venous Oxygen Saturation: A Proof-of-Concept Study in Pigs. Anesth Analg 2020) The primary objective of the current study is thus to investigate the agreement and trending ability for capnodynamically derived SvO2 against the gold standard CO-oximetry. The secondary objective is to investigate the agreement and trending ability for capnodynamically derived CO (COEPBF) against the modified CO2-Fick method.
The purpose of the research is to characterize the effect of labetalol, atenolol, and nifedipine on maternal hemodynamics early in pregnancy. Patients will be given medication based on their hemodynamics and asked to return for a repeat measurement.
Rationale: Diligent fluid management is instrumental to improve postoperative outcome, cost and quality of care. Objective: To determine the accuracy of brachial, femoral and carotid blood flow measurement with ultrasound compared to intermittent transpulmonary thermodilution cardiac output measurement, invasive and non-invasive pulse-contour analysis. Study design: Observational study - Prospective clinical non-intervention measurement study. Study population: Adult ASA 1-2 patients, scheduled for open upper GI surgery Intervention (if applicable): Not applicable. We will perform non-invasive ultrasound measurements of the femoral, carotid and brachial blood flow right before induction and under anaesthesia. Main study parameters/endpoints: Femoral, carotid and brachial blood flow determined by ultrasound and blood flow variation and the accuracy compared to transpulmonary thermodilution cardiac output, stroke volume variation, and pulse-contour analysis derived cardiac output (invasive or non-invasive) at the following time points during surgery; (limited for femoral site as it cannot be measured during surgery): (1) before induction of anaesthesia, (2) after induction, (3) 15 minutes after start of surgery, (4) before and (5) after (1-2 minutes) a fluid bolus, (6) before and (7) after start of vasopressors, (8) before and (9) after Trendelenburg position and (10) after surgery before end of anaesthesia (figure 1). A fluid bolus will be performed as part of standard care (goal-directed fluid therapy). The vasopressor and Trendelenburg position time points are optional measurements. We will also measure (continuous) invasive femoral blood pressure (SBP, DBP, MAP), non-invasive blood pressure, SVV, central venous pressure (when available), heart rate, SpO2, PFI, etCO2.