Clinical trials: Cerebrovascular Circulation, open to volunteers
Cerebral Blood Flow, Cerebral Blood Flow Regulation
The Role of Estrogen and Testosterone in Determining Brain Blood Flow and Metabolic Regulation in Humans
Due to historical exclusion of females from research, there are gaps in the understanding of female physiology, how it differs from males, and how sex-specific hormones contribute.
- Conditions
- Cerebral Blood Flow, Cerebral Blood Flow Regulation, Sex Differences, Exercise
- Trial name
- NCT07212712
- Testing
- GnRH antagonist, Estradiol (E2), Testosterone
- Where
- Canada
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Cerebral Blood Flow
Cerebral Blood Flow in Term and Preterm Neonates Using Doppler Ultrasonography
This study aims to evaluate cerebral blood flow in stable term and preterm newborns using Doppler ultrasonography. By measuring and comparing PSV, EDV, RI, and PI in the main brain arteries, the study seeks to identify normal…
- Trial name
- NCT07427342
- Where
- Egypt
- Volunteers
- 200 people
- Sponsor
- Assiut University
Blood Flow, Cerebral Oxygenation
MRI Assesment of Cerebral Blood Flow in Anesthetized Children
Children undergoing magnetic resonance imaging (MRI) of the brain often need to be sedated to complete the examination, as it is difficult to remain still for a long period, which is required to obtain usable images.
- Conditions
- Blood Flow, Cerebral Oxygenation, Blood Pressure
- Trial name
- BAMBI (NCT06886698)
- Where
- Sweden
- Volunteers
- 30 people
- Sponsor
- Karolinska Institutet
Cardiac Rhythm Disorders, Urological Disorders
Product Surveillance Registry
The purpose of the Registry is to provide continuing evaluation and periodic reporting of safety and effectiveness of Medtronic market-released products.
- Conditions
- Cardiac Rhythm Disorders, Urological Disorders, Neurological Disorders, Cardiovascular Disorders
- Trial name
- PSR (NCT01524276)
- Where
- 402 sites in United States, Argentina and 39 more
- Volunteers
- 100,000 people
- Sponsor
- Medtronic
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
Neonatal Prematurity, Patent Ductus Arteriosus in Preterm Infants
Relation Between Prostaglandin E2 Metabolite Levels and the Development of Hemodynamically Significant Patent Ductus Arteriosus in Preterm Neonates
prospective observational cohort study to explore the relationship between PGE2 metabolite levels and the development of hemodynamically significant PDA in preterm neonates.
- Conditions
- Neonatal Prematurity, Patent Ductus Arteriosus in Preterm Infants, Prostaglandins
- Trial name
- NCT07338370
- Testing
- Ibuprofen (Brufen®)
- Where
- Egypt
- Volunteers
- 34 people
- Sponsor
- Ain Shams University
Hemodynamic Monitoring
Effect of Cardiorespiratory Changes on Carotid Flow Time During Lung Resection Surgery
Cardiorespiratory changes during lung resection surgery, even though generally well tolerated, may lead to hemodynamic compromise, reducing venous return to the heart and hence cardiac output.
- Trial name
- NCT07808749
- Where
- Spain
- Volunteers
- 50 people
- Sponsor
- University of Valencia
Laparoscopic Surgery
A Comparative Study of Ventilation Strategies in Different Surgical Positions on Intracranial Pressure and Cerebral Blood Flow During Laparoscopic Surgery
The purpose of this clinical trial is to investigate the effects of laparoscopic surgery in the Trendelenburg and Reverse Trendelenburg positions, and variable tidal volume ventilation (V-VCV), pressure-regulated…
- Trial name
- NCT06805747
- Testing
- Variable tidal volume ventilation (V-VCV), Pressure-regulated volume-controlled ventilation (PRVC), Conventional volume-controlled ventilation (C-VCV)
- Where
- China
- Volunteers
- 240 people
- Sponsor
- Inner Mongolia Baogang Hospital
Hypoxic-Ischemic Encephalopathy, Asphyxia
Hydrocortisone Therapy Optimization During Hypothermia Treatment in Asphyxiated Neonates
This is a prospective, single center, pharmacokinetic study of intravenous hydrocortisone therapy for systemic low blood pressure during hypothermia treatment in asphyxiated newborns.
- Conditions
- Hypoxic-Ischemic Encephalopathy, Asphyxia, Hypotension, Circulatory Failure Neonatal
- Trial name
- UniCort (NCT05836610)
- Testing
- Hydrocortisone
- Where
- Hungary
- Volunteers
- 50 people
- Sponsor
- Semmelweis University
High Frequency Oscillation, Volume Targeted Ventilation
Optimising HFO&VTV in Newborn Infants
Mechanical ventilation (MV) is life saving for infants requiring respiratory support in the newborn period but its use has been associated with complications.
- Trial name
- NCT06719284
- Testing
- HFO&VTV at targeted tidal volumes of 1.5, 2.0 and 2.5 ml/kg in random order, HFOV at the settings applied prior to the study
- Where
- United Kingdom
- Volunteers
- 27 people
- Sponsor
- King's College Hospital NHS Trust
Anesthesia; Reaction, Anesthesia
Individual Cerebral Hemodynamic Oxygenation Relationships - ICHOR 4
The goal of this clinical trial is to understand whether there are differences in the cerebral blood flow, and oxygen metabolism affected by two types of anesthesia: Propofol or Dexmedetomidine.
- Trial name
- ICHOR (NCT07103616)
- Testing
- Randomization of Propofol or Dexmedetomidine
- Where
- United States
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Los Angeles
Hypotension, Neonatal Hypotension
Appropriate Dosage of Vasopressor in Neonates and Infants
In this study, the investigators will evaluate cerebral blood flow before and after drug infusion using ultrasound to suggest blood pressure criteria and dosage of ephedrine, a vasopressor, to maintain adequate cerebral blood…
- Conditions
- Hypotension, Neonatal Hypotension, Intraoperative Complications
- Trial name
- NCT06257316
- Testing
- EPHEDrine Hydrochloride 5 mg/ml
- Volunteers
- 132 people
- Sponsor
- Seoul National University Hospital