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Showing 1-20 of 68 trials
NCT07082283
The goal of this clinical trial is to learn whether temporary atrial pacing improves heart function after cardiac surgery under cardiopulmonary bypass (CPB). It will also help determine the best pacing rate during the first 24 hours after surgery. The main questions it aims to answer are: * Does atrial pacing improve cardiac output after surgery? * Is 70, 80, or 90 bpm the most effective pacing rate? * Does pacing reduce the risk of atrial fibrillation after surgery?
NCT05428384
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 (HF) 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).
NCT06759506
In this prospective, observational study, we aim to investigate whether routinely monitored Perfusion Index (PI) and cerebral oxygen saturation (NIRS) values in pediatric patients aged 0-6 undergoing congenital heart surgery are associated with Low Cardiac Output Syndrome. Pediatric patients aged 0-6 years undergoing congenital heart surgery will be followed primarily for Cerebral Near-Infrared Reflectance Spectroscopy, and Perfusion Index (PI) values both in the operating room during the operation, and in the Pediatric Cardiac Intensive Care Unit during the first 24 hours postoperatively. The patients with Low Cardiac Output Syndrome will be recorded, and the changes in Cerebral Near-Infrared Reflectance Spectroscopy, and Perfusion Index (PI) values will be evaluated to determine whether they can predict low cardiac output.
NCT06707077
Cardiac output (CO) is measured using Mostcare. Mean systemic filling pressure (MSFP) and vascular resistances are calculated using venous return curves constructed by measuring steady-state arterial and venous pressures and cardiac output (CO) during inspiratory hold manoeuvres at increasing plateau pressures. Measurements are performed at three incremental levels of targeted sevoflurane concentrations.
NCT06468657
This study evaluates the impact of ejection fraction (EF) on clinical outcomes in patients undergoing cardiovascular surgeries, specifically coronary artery bypass grafting (CABG) and heart valve replacement. It spans surgeries performed between 2012 and 2022 at Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital. Patients are categorized into two groups based on their preoperative EF: those with preserved EF (≥50%) and those with reduced EF (\<50%). The primary aim is to assess how EF affects postoperative morbidity, mortality, hospital stay, and complications. Secondary aims include evaluating the development of postoperative arrhythmias, the need for vasopressors and inotropes, and transfusion requirements. Data will be collected retrospectively from hospital records and electronic health systems. The study's findings are expected to provide insights into tailored perioperative and postoperative management strategies for patients with varying EF levels, ultimately improving clinical outcomes.
NCT04064177
This is an observational study in newborn term and preterm infants. The study will validate if non-invasive continuous cardiac output monitoring is feasible in newborn infants, if normative values can be constructed and what is the effect of fluid boluses and inotropes on cardiac output and peripheral vascular resistance.
NCT06355882
Patients with low cardiac output syndrome requiring surgical and periodontal dental treatment will be selected to undergo the dental procedure using local dental anesthetic: 2% lidocaine with epinephrine and 2% lidocaine without vasoconstrictor. Cardiovascular events and the safety of using two cartridges (3.6 mL) will be evaluated. They will be evaluated by Holter monitoring in the period of 1 hour before, during and 1 hour after the procedure and blood pressure correction will be performed
NCT03021525
To evaluate the impact of perioperative, algorithm driven, hemodynamic therapy based on individualized fluid and cardiac output optimization on postoperative moderate and severe complications in patients undergoing major abdominal surgery including visceral, urological, and gynecological operations. In the proposed study, hemodynamic therapy is tailored individually to each patient, based on individual preload optimization by the functional parameter "pulse pressure variation (PPV)" and based on an individually titrated goal of cardiac index. The proposed study therefore further develops the concept of hemodynamic goal-directed therapy to individually set goals and is designed to assess its impact on morbidity and mortality.
NCT06198621
The study aims at evaluating effectiveness of noninvasive cardiometry in assessment of cardiac parameters in critically ill patients in respiratory ICU in comparison to invasive methods as indirect fick's and thermodilution methods using pulmonary artery catheter.
NCT06088966
Investigation of the effects of negative pressure ventilation after cardiac surgery in adults onto performance of the left and right heart and the lungs.
NCT03172689
To compare the less invasive Oesophageal Doppler cardiac output Monitor (ODM) to the invasive (standard of care) Transpulmonary Thermodilution cardiac output monitor (TPTD) in children.
NCT05800808
The goal of this observational study was to better understand the impact of increased plasma volume on later exercise in hypoxia. Investigators examined young, healthy, males who regularly participated in aerobic exercise. Investigators first measured participant's response to exercise in hypoxia (simulated \~7,500 feet above sea level). The investigators then had participants either 1) undergo 1 bout of high intensity interval exercise or 2) undergo 1 bout of moderate, continuous exercise. 48 hours after the exercise, participants were again examined in hypoxia.
NCT05754489
Fatigue and dyspnea that reduce exercise performance are common symptoms in patients with hypertrophic cardiomyopathy. Since the cause of this functional limitation has not yet been described, this study aims to evaluate the cardiopulmonary parameters measured at cardiopulmonary exercise test in combination with those obtained by non-invasive measurement of cardiac output by impedance (Physioflow) and echocardiography. These results will help to better define the mechanisms underlying limitation in these patients, also in relation to the degree of LVOT obstruction. The aim of the present study is to assess the cardiopulmonary response to exercise in patients with hypertrophic cardiomyopathy, based on the degree of LVOT obstruction, by adding non-invasive measurement of cardiac output by Physioflow and echocardiographic parameters to the cardiopulmonary exercise test parameters associated with stroke volume and cardiac output (ie. VO2/WR, O2pulse) Consecutive patients with a previous diagnosis of hypertrophic cardiomyopathy on optimised medical therapy will be enrolled to perform a cardiopulmonary exercise test with simultaneous measurement of cardiac output and an exercise echocardiogram for clinical routine.
NCT05734664
Pulsify Medical aims at developing a sensor designed for the non-invasive, continuous and real-time monitoring of cardiac hemodynamics in patients at risk based on new transducer technology and artificial intelligence. It relies on real-time 3D greyscale ultrasound reconstruction of the LV myocardium. This medical device is still under development and the main objective of this clinical investigation is to gather data on the accuracy of the current version of the sensor developed by Pulsify Medical to further guide the development of the device. The data generated will not be used for conformity assessment and this single-center prospective study on 8 patients is therefore deemed appropriate for this purpose. During the pretreatment visit, eligibility of the subjects for the investigation will be assessed. Once subjects are considered eligible and they have consented to participate in the investigation, the visit to perform the monitoring will be scheduled. An operator will then perform on each patient two scans with the Pulsify sensor. For accurate 3D reconstruction, the ECG and breathing cycle during the acquisition will also be recorded. Immediately after acquisition with the Pulsify sensor, an echocardiographist will record a complete 2D and 3D ultrasound data set using regular ultrasound equipment used for medical examinations in the hospital. The data generated will then be used to compare the accuracy of the Pulsify sensor for cardiac output measurements with state-of-the-art ultrasound. The data will also enable to acquire a dataset of ultrasound images taken with the Pulsify sensor technology in a manner that is very close to the image capture mechanism of Pulsify's final product.
NCT04045340
The aim of the present study is to assess the best echocardiographic parameters (GLS, GLS rate and standard echocardiographic parameters) predicting LCOS in on-pump mitral surgery.
NCT05269537
Cardiac output will be measured in healthy parturients undergoing cesarean delivery under spinal anesthesia
NCT04465201
To demonstrate that the Impella® Hemodynamic Platform (the "Study Device") is safe, and measurements obtained are as good as currently used methods. These measurements include how much pressure the heart is generating and how much blood your heart is pumping during the PCI.
NCT05508711
The use of cardiac output monitoring to guide intraoperative fluid management and inotropic drugs as part of a hemodynamic therapy algorithm reduce the complication rate in major abdominal surgery. The FloTrac/Vigileo system (© Edwards Lifesciences) (Edwards Lifesciences, Irvine, CA) device estimate cardiac output by using arterial pulse contour analysis. The accuracy of FloTrac/Vigileo have been proven in patients with normal cardiac index. Most of studies regarding FloTrac/Vigileo were performed in patients in horizontal supine position, which is not usually the reality in the operation theater during abdominal surgery. Therefore, the investigators realized this monocentric prospective clinical trial to study the accuracy and trending ability of the fourth generation FloTrac/Vigileo system cardiac output estimation in three different positions (horizontal supine, Trendelenburg and reverse Trendelenburg positions) in anesthetized patients undergoing elective major abdominal surgery. The reference method of cardiac output measurement used was the transesophageal echocardiography.
NCT04641949
The study is a single-centre, placebo-controlled, crossover study on healthy volunteers aiming to explore non-inferiority of methoxyflurane and fentanyl compared to placebo on the tolerance to hypovolemia.
NCT03058653
On the Intensive Care Unit doctors give a lot of fluid to patients in order to improve their blood pressure, amount of urine made or to let doctors stop drugs that are needed to keep blood pressure up. Doctors normally give patients 500ml of fluid over 25 minutes as standard, however it is very difficult to know if giving those fluids and how much fluid will help (it does in some but not others). If a person gets too much fluid this can also cause problems such as fluid in lungs, poor kidney function, or swelling in the limbs. The LidCo Rapid monitor lets the Intensive Care Unit (ICU) team know the amount of blood the heart pushes out with each beat (Stroke volume). It works by following the tracing off the arterial line (Blood pressure monitor) that has been inserted as part of the standard care of a patient on the ICU. It does not need any other invasive procedures or drug administration to work. This study is using this monitor to see if it can identify a method of improving the administration of intravenous fluids on the Intensive Care Unit. The study is looking to see if it can identify whether giving a small amount of fluid first identifies people who will benefit from more fluid and those that won't.