Clinical trials: Hypocapnia
Hypoxia, Brain, Hyperoxia
The Effect of Respiratory Challenge on the BOLD Signal
The purpose of this research study is to better understand how blood flow and metabolism are different between normal controls and patients with disease.
- Conditions
- Hypoxia, Brain, Hyperoxia, Hypercapnia, Hypocapnia
- Trial name
- NCT04258774
- Testing
- Carbon Dioxide
- Where
- United States
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Washington University School of Medicine
Mechanical Ventilation Complication, Surgery
Intraoperative Hypocapnia in PROVHILO and PROBESE
To gain a better understanding of the epidemiology of intraoperative hypocapnia, in particular the associations of intraoperative hypocapnia with patient demographics, ventilator characteristics, and perioperative complications…
- Conditions
- Mechanical Ventilation Complication, Surgery, Pulmonary Complication, Intraoperative Complications
- Trial name
- iHypoPRO (NCT05550181)
- Testing
- intraoperative mechanical ventilation with hypocapnia (etCO2 < 35 mm Hg)
- Where
- 4 sites in Brazil, Germany and 2 more
- Volunteers
- 2,793 people
- Sponsor
- NMC Specialty Hospital
Hypoxia, Hypercapnia
Pulse Oximeter and Respiratory Rate Test
Assessment of Spry Health's Loop oximetry accuracy in profound hypoxia Assessment of Spry Health's Respiratory rate accuracy in normal conditions and profound hypoxia
- Conditions
- Hypoxia, Hypercapnia, Hypocapnia
- Trial name
- NCT03797300
- Testing
- Spry Loop Band
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Spry Health
Hyperventilation Syndrome, Hypocapnia
Comparison of Transcutaneous Vs End-tidal CO2 Pressure Measurements in Hyperventilation Syndrome Diagnosis
Hyper Ventilation Syndrome is a frequent disease affecting adults whose diagnosis is often belated or even unrecognized due to the lack of "gold standard" criteria.
- Conditions
- Hyperventilation Syndrome, Hypocapnia, Alkalosis, Respiratory, Hyperventilation
- Trial name
- TCvsPETCO2 (NCT03614806)
- Testing
- Simultaneous Transcutaneous and End-tidal CO2 measurements
- Where
- France
- Volunteers
- 14 people
- Sponsor
- University Hospital, Rouen
Aneurysmal Subarachnoid Hemorrhage (aSAH)
Correcting Hypocapnia in Aneurysmal Subarachnoid Hemorrhage.
Based on the clinical observation that over half of the patients in the management of aneurysmal subarachnoid hemorrhage(aSAH) present with spontaneous hyperventilation, which is significantly associated with delayed cerebral…
- Trial name
- NCT07343232
- Testing
- Normobaric Facemask Oxygen, control group
- Where
- China
- Volunteers
- 80 people
- Sponsor
- The Chinese University of Hong Kong, Shenzhen
Anesthesia, Intravenous, Anesthesia Recovery Period
Effects of Hypercapnia on Emergence From General Anesthesia Under Propofol
Hypercapnia derives increase of cerebral blood flow and cardiac output. It means that the rate of propofol elimination from the brain and the blood will be increased and the patient will awake more quickly.
- Trial name
- NCT01531491
- Testing
- Rebreathing tube, No rebreathing tube (Nothing)
- Where
- South Korea
- Volunteers
- 30 people
- Sponsor
- DongGuk University
Microcirculation, Blood Circulation
Study of the Impact of Changes in Carbonemia on Microcirculation in Patients Achieving a Test Hypercapnia
The microcirculatory alterations is common in circulatory failure, especially during sepsis. The severity of these changes and their sustainability are responsible of multi organ failure and ultimately death.
- Trial name
- NCT02549378
- Testing
- confocal microscopy
- Where
- France
- Volunteers
- 10 people
- Sponsor
- Centre Hospitalier Universitaire de Saint Etienne
Delivery Room Resuscitation
Quantitative End Tidal CO2 Monitoring in the Delivery Room (DR)
This is a trial evaluating the use of an end tidal CO2 monitor during ventilation in the delivery room. The use of the monitor is compared with clinical assessment of ventilation.
- Trial name
- NCT01381068
- Testing
- End tidal CO2 monitor
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Neil Finer
Anesthesia, Hypercapnia
End Tidal Carbon Dioxide Concentration and Depth of Anesthesia in Children
Carbon Dioxide (CO2) is a by-product of metabolism and is removed from the body when we breathe out. High levels of CO2 can affect the nervous system and cause us to be sleepy or sedated.
- Conditions
- Anesthesia, Hypercapnia, Hypocapnia
- Trial name
- NCT06303518
- Testing
- High normal ETCO2: ETCO2 50 mmHg (+/- 3mmHg), Normal ETCO2: ETCO2 40 mmHg (+/- 3mmHg), Low Normal ETCO2: ETCO2 30 mmHg (+/- 3mmHg)
- Where
- Canada
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Postural Orthostatic Tachycardia Syndrome, Hypocapnia
Chemoreflex and Baroreflex Alterations Causing Postural Tachycardia Syndrome With Orthostatic Hyperpnea and Hypocapnia
Postural tachycardia syndrome (POTS) is the most common chronic cause of postural lightheadedness, and upright confusion afflicting many Americans, mostly young women.
- Conditions
- Postural Orthostatic Tachycardia Syndrome, Hypocapnia, Hyperventilation
- Trial name
- NCT05923840
- Testing
- Chemoreflex Testing, Baroreflex testing, Orthostatic stress testing
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Response to Hyperoxia, Hypocapnia
The Role of Perioperative Ventilation (Gas Exchange) During Intrabdominal Surgery on Cognitive Function
Abdominal surgery commonly requires perioperative relaxation and therefore controlled mechanical ventilation. However, respiratory support can be associated with minor, yet clinically significant changes in blood gas content.
- Trial name
- ACDYS (NCT02267031)
- Testing
- mechanical ventilation
- Where
- Russia
- Volunteers
- 109 people
- Sponsor
- Northern State Medical University
Neonatal Encephalopathy
Transcutaneous Carbon Dioxide Monitoring in Neonates Receiving Therapeutic Hypothermia for Neonatal Encephalopathy
The aim of our study is to evaluate the feasibility of applying transcutaneous CO2 monitoring (tcPCO2) in neonates receiving therapeutic hypothermia and to quantify the agreement between tcPCO2 and PCO2 in this population with or…
- Trial name
- NCT04603547
- Testing
- Transcutaneous Carbon Dioxide Monitoring
- Where
- United States
- Volunteers
- 53 people
- Sponsor
- Brigham and Women's Hospital
Hypoxic-Ischaemic Encephalopathy, Perinatal Asphyxia
Hypoxic-Ischemic Encephalopathy Therapy Optimization in Neonates for Better Neuroprotection With Inhalative CO2
This is a Phase I, open-label, single center trial to evaluate the feasibility and safety of low concentration CO2 gas mixture (5% CO2 + 95% air) inhalation in asphyxiated, cooled, mechanically ventilated newborns at risk of…
- Conditions
- Hypoxic-Ischaemic Encephalopathy, Perinatal Asphyxia, Hypocapnia
- Trial name
- HENRIC (NCT02700854)
- Testing
- 5% carbon-dioxide inhalation
- Where
- Hungary
- Volunteers
- 10 people
- Sponsor
- Semmelweis University
Hypocapnia, Balance; Distorted
A Study to Evaluate the Effects of Sharpened Romberg Testing (SRT) in Healthy Subjects
This research study is being done to evaluate the effectiveness of using the sharpened Romberg test to screen for impaired postural control in patients with impaired or altered breathing patterns.
- Trial name
- NCT04897360
- Testing
- Increased breathing, sharpened Romberg test (SRT)
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Chronic Obstructive Pulmonary Disease, Congestive Heart Failure
Effectiveness of Respiratory Muscle Training by Spirotiger in Chronic Patients
The reduction in effort tolerance as result of a decreased efficiency in ventilation is common both in patients affected by COPD (McKenzie) and chronic heart failure (CHF) (Ribeiro, Frankenstein).
- Trial name
- NCT01556139
- Testing
- Spirotiger
- Where
- Italy
- Volunteers
- 40 people
- Sponsor
- Fondazione Salvatore Maugeri