Clinical trials: Doppler
Hemodynamic Monitoring
Evaluation of the UltraTrac System as a Non-Invasive Monitor of Hemodynamic Parameters
This study will test the use of the UltraTrac™ system, a small, noninvasive device that uses electrodes on the skin and a small ultrasound sensor to provide measurements of cardiac function in a wide of subjects.
- Trial name
- NCT07862608
- Testing
- Noninvasive Hemodynamic Monitoring System
- Where
- United States
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- AcQumen Medical, Inc.
Preterm Birth, Prenatal Care Late
This Study Was to Investigate the Efficacy of Fetal Right Heart Doppler Findings in Determination of Pulmonary Maturity
Objective: The aim of this study was to investigate the efficacy of fetal right heart doppler findings in determination of pulmonary maturity.
- Conditions
- Preterm Birth, Prenatal Care Late, Preterm Labor
- Trial name
- NCT04296591
- Testing
- fetal heart doppler findings
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Karadeniz Technical University
Preterm, Patent Ductus Arteriosus
NeoDoppler: New Ultrasound Technology for Continuous Monitoring of Cerebral Circulation Pilot
Non-invasive tools for monitoring of course of disease are important and necessary in the treatment of pre-term/premature infants and sick neonates.
- Conditions
- Preterm, Patent Ductus Arteriosus, Sepsis, Asphyxia
- Trial name
- CE-NeoDoppler (NCT06646250)
- Testing
- NeoDoppler - CE certified
- Where
- Norway
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- St. Olavs Hospital
Preeclampsia and Intrauterine Growth Restriction
Placental Insufficiency Microcirculation Quantification by Ultrafast Doppler (MICRODOPPLER PLACENTA)
To identify fetuses small for their gestational-age who have reached their appropriate growth potential from growth-restricted fetuses due to placental insufficiency is uneasy.
- Trial name
- NCT03860103
- Where
- France
- Volunteers
- 165 people, healthy volunteers welcome
- Sponsor
- Nantes University Hospital
French Vascular Physicians
Arterial Doppler Waveforms Analysis in PAD
The main objective is to evaluate the differences of terminology used when describing arterial doppler waveforms. To assess the impact of an educational process
- Trial name
- APP-Wave-PAD (NCT03827512)
- Testing
- Doppler arterial waveforms analysis
- Where
- France
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Rennes University Hospital
Diagnosis
Uterine Artery Diastolic Notching & Apelin-13 and 36
This study was conducted to investigate the relationship between diastolic notching on uterine artery Doppler and serum apelin-13 and 36 concentrations between 11 and 14 weeks of gestation.
- Trial name
- NCT06390202
- Testing
- no intervention
- Where
- Turkey (Türkiye)
- Volunteers
- 88 people, healthy volunteers welcome
- Sponsor
- Umraniye Education and Research Hospital
Smoking
Acute Cardiovascular Effects of Cigarette Smoking
Twenty healthy smokers will be subjected to measurement of Pulse, Blood Pressure, electrocardiogram (ECG) and Echo at baseline and after smoking a cigarette.
- Trial name
- NCT01346956
- Where
- India
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Andhra Medical College
Arteriovenous Fistula
Color Doppler Ultrasonography in Prediction of Arteriovenous Fistula Maturation in Hemodialysis Patients
The transplant is the definitive treatment of renal insufficiency, in our days. While waiting for it, the arteriovenous fistula surgery is standard procedure.
- Trial name
- NCT03171701
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Assiut University
Varicose Veins, Venous Insufficiency
The Party Balloon Assisted Valsalva in Diagnosis of Superficial Venous Valvular Reflux of Lower Limb
This study was designed to compare the party balloon assisted Valsalva with the conventional Valsava for exhibiting the reverse venous flow in superficial venous valvular incompetence duplex examination.
- Trial name
- NCT02051439
- Testing
- Valsava
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Mahidol University
This Study Was Focused to Evaluate Feasibility of Doppler Tissue Monitoring During the Induction Anesthesia,, and Evaluate Routine Propofol Induction's Effect on Myocardial Tissue Motion, Using Non-invasive Doppler Tissue and 2D Speckle Tracking Imaging.
Propofol Induction's Effect on Cardiac Function
Background: Propofol effects dose-dependent myocardial depression, but there is little clinical data available regarding the direct impact of propofol induction on myocardial function.
- Conditions
- This Study Was Focused to Evaluate Feasibility of Doppler Tissue Monitoring During the Induction Anesthesia,, and Evaluate Routine Propofol Induction's Effect on Myocardial Tissue Motion, Using Non-invasive Doppler Tissue and 2D Speckle Tracking Imaging., This is the First Study, to Our Knowledge, Which Has Evaluated the Possible Impact of Propofol Induction on LV Function.
- Trial name
- NCT02408341
- Where
- South Korea
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Konkuk University Medical Center
Heart Surgery
Study of Diaphragm Mobility on Tissue Doppler
Diaphragm dysfunction is found in 10 to 90% of patients following heart surgery. In current practice diaphragm dysfunction is evaluated by 2D ultrasonography. Tissue Doppler is a validated technique to study heart contractility.
- Trial name
- DD (NCT03295344)
- Testing
- Diaphragm ultrasonography, Tissue Doppler
- Where
- France
- Volunteers
- 170 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire Dijon
Absent End-Diastolic Flow Of The Fetal Umbilical Artery
Clinical Significance Of Intermittently Absent End-Diastolic Flow Of The Fetal Umbilical Artery On Perinatal And Neonatal Outcomes Dr. Zeynep Kayaoğlu Yıldırım Dr. Alperen İnce Dr Gökhan Bayanmelek Dr Gökhan Bolluk
Objective: This study aimed to estimate the risk of adverse perinatal outcomes among pregnant patients with intermittently absent (iAEDF) and persistently absent end-diastolic umbilical artery flow (pAEDF).
- Trial name
- NCT06346327
- Where
- Turkey (Türkiye)
- Volunteers
- 137 people, healthy volunteers welcome
- Sponsor
- Başakşehir Çam & Sakura City Hospital
Healthy Volunteers
Mechanisms of Human Cutaneous Microcirculation in Healthy Volunteers
Microvascular dysfunctions are critical events in several diseases including diabetes. This study will develop a methodology for microvascular investigation in human skin.
- Trial name
- NCT00152724
- Testing
- pressure strain system, iontophoresis, scopolamin, emla
- Where
- France
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- University Hospital, Angers
Malignant Tumor of Women's Reproductive System
Characterizing Malignant Tumors Using Ultrasound Doppler Imaging
The aim of this study is to determine whether Ultrasound Doppler imaging can identify malignant tumors at a very early stage.
- Trial name
- NCT03598335
- Testing
- Ultrasound
- Where
- Israel
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Hillel Yaffe Medical Center
Acute Coronary Syndrome, Myocardial Infarction (MI)
Clinical Echocardiography and S' Wave for Early Recognition of Acute Coronary Syndrome in the Emergency Department, A Prospective Study
The goal of this prospective observational study is to assess the diagnostic accuracy of the tissue Doppler imaging (TDI) S' wave in detecting acute coronary syndrome (ACS) in adult patients presenting to the emergency department…
- Conditions
- Acute Coronary Syndrome, Myocardial Infarction (MI), Non-ST Elevation Myocardial Infarction, Unstable Angina
- Trial name
- CLEAR_ECHO (NCT06860997)
- Testing
- Tissue Doppler Imaging (TDI) S' Wave Echocardiography
- Where
- Belgium
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- Cliniques universitaires Saint-Luc- Université Catholique de Louvain
Missed Abortion
Doppler Flow Measurements in Patients With Misoprostol Treatment for Arrested Pregnancy
Testing the whether Doppler studies after cytotec treatment can predict success of treatment.
- Trial name
- NCT01639976
- Where
- Israel
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Hillel Yaffe Medical Center
Anemia During Pregnancy, Anemia Complicating Pregnancy
Middle Cerebral Artery Doppler( MCA-PSV) & Perinatal Outcome
can we predict neonatal outcome by the results of 3rd trimester MCA Doppler Indices In pregnant women with anemia?? --- the aim of this study is to evaluate values of MCA Doppler indices in determining fetal outcome in pregnant…
- Conditions
- Anemia During Pregnancy, Anemia Complicating Pregnancy, Anemia
- Trial name
- NCT07135635
- Testing
- Middle Cerebral Artery doppler
- Where
- Egypt
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Sohag University
Multiple Sclerosis
Transcranial Doppler in Multiple Sclerosis
The aim of this study is to investigate the potential of Transcranial doppler (TCD) and Near-Infrared Spectroscopy (NIRS), more simple and non-invasive bedside methods than magnetic resonance imaging (MRI), to evaluate changes in…
- Trial name
- TRADOMS (NCT02389426)
- Testing
- TCD baseline, TCD after bosentan administration, NIRS baseline
- Where
- Belgium
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Universitair Ziekenhuis Brussel
Other Acute Illnesses Presenting to the Hospital, Heart Failure
Evaluation of Implementation of a National Point-of-Care Ultrasound Training Program
This VA QUERI Partnered Evaluation Initiative will evaluate the impact of an immersive Point-of-care Ultrasound (POCUS) Training Course on provider skill acquisition and retention; the frequency of POCUS use by trained providers…
- Conditions
- Other Acute Illnesses Presenting to the Hospital, Heart Failure, Pneumonia, Deep Venous Thrombosis
- Trial name
- NCT03296280
- Where
- United States
- Volunteers
- 116 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Stroke
CLOTBUST Hands-Free: A Phase I/II Pilot Safety Trial
The purpose of CLOTBUST-HF is to determine the safety of a novel, external Hands-Free transcranial Doppler (TCD) ultrasound system in healthy volunteers and ischemic stroke patients.
- Trial name
- CLOTBUST-HF (NCT01240356)
- Testing
- 2-MHz transcranial Doppler ultrasound, 2-MHz transcranial Doppler ultrasound insonation
- Where
- 2 sites in United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- The University of Texas Health Science Center, Houston