Clinical trials: Plethysmography
Abdominal Cancer
Tidal Volume Challenge and Reliability of Plethysmography Variability Index
The aim of this study is to investigate whether a temporary increase in tidal volume can predict fluid responsiveness in patients receiving a low tidal volume ventilation in hepatobiliary and pancreatic surgeries.
- Trial name
- NCT03546179
- Testing
- tidal volume challenge test, Volume loading
- Where
- Egypt
- Volunteers
- 48 people
- Sponsor
- Fayoum University Hospital
Pulmonary Disease, Chronic Obstructive
Safety And Tolerability Study In Patients With Chronic Obstructive Pulmonary Disease
GSK233705 is a high-affinity specific muscarinic receptor (mAChR) antagonist which is being developed for once daily treatment of chronic obstructive pulmonary disease (COPD).
- Trial name
- NCT00376714
- Testing
- GSK233705
- Where
- 5 sites in Belgium, Sweden
- Volunteers
- 45 people
- Sponsor
- GlaxoSmithKline
Chronic Cerebrospinal Venous Insufficiency
Doppler Sonography, MR Venography, Plethysmography for the Diagnosis of CCSVI
This study is aimed at evaluation of diagnostic value of Doppler sonography, MR venography and air-plethysmography for the assessment of abnormalities in the internal jugular veins, with catheter venography as the reference test.
- Trial name
- NCT01425554
- Testing
- Doppler sonography of internal jugular veins, Magnetic resonance venography of internal jugular veins, Air-plethysmography of the neck
- Where
- Poland
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- Euromedic Specialist Clinics, Poland
Vascular Disease, Heart Disease
Effects of Urocortins on Forearm Arterial Blood Flow in Healthy Volunteers (Protocol 3)
Impairment of the heart's pumping capacity (heart failure) remains a major clinical problem with a poor prognosis and the search for novel treatments remains an important area of research.
- Trial name
- NCT01096706
- Testing
- NO clamp, Saline, Fluconazole
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Blood Pressure, Heart Rate, Respiratory Rate, Heart Rate Variability, Stress Index, Vital Signs Monitoring, Vital Signs Monitoring
Contactless Vital Signs Measurement
This pilot study will determine the feasibility and effectiveness of implementing video plethysmography (PPG) for contactless vital signs and str5ess index measurements from surgical patients in preoperative care.
- Trial name
- NCT05165381
- Testing
- Video PPG
- Where
- 2 sites in Canada
- Volunteers
- 216 people
- Sponsor
- University Health Network, Toronto
Congestive Heart Failure
Blood Volume and Hemodynamic Analysis in Patients With Chronic Heart Failure
The primary hypothesis is that patients with HFREF (heart failure with reduced ejection fraction) will demonstrate a markedly expanded intravascular volume which will correlate with elevated right heart hemodynamics and increased…
- Trial name
- NCT02120014
- Testing
- blood volume measurement, venous plethysmography
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- Mayo Clinic
COPD
Comparing Pressure Based and Dilution Based Total Lung Capacity Measurements in COPD Patients for Lung Function Diagnostics
Total Lung Capacity (TLC) of the lungs can be determined using a pressure based method (i.e. by body plethysmography) or it can be determined using a dilution based method (i.e.
- Trial name
- NCT04531293
- Testing
- Respiratory Analysis System
- Where
- Switzerland
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- ndd Medizintechnik AG
Acute Disease, Sepsis
Acutelines: a Large Data-/Biobank of Acute and Emergency Medicine
Research in acute care faces many challenges, including enrollment challenges, legal limitations in data sharing, limited funding, and lack of singular ownership of the domain of acute care.
- Conditions
- Acute Disease, Sepsis, Pneumonia, Frailty
- Trial name
- Acutelines (NCT04615065)
- Where
- Netherlands
- Volunteers
- 35,000 people
- Sponsor
- University Medical Center Groningen
Neonates
Body Composition Assessment in Healthy Full-term Neonates by Anthropometry, Air Displacement Plethysmography and Multiple-frequency Bio-impedance Analysis
Low birth weight and prematurity are associated with adverse metabolic outcome in adult life. Yet it remains to be determined whether this outcome is the consequence of the low birth weight per se, or of the catch up growth…
- Trial name
- NCT00890344
- Where
- France
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Nantes University Hospital
Heart Failure
Inspiratory Muscular Training
Objectives: To evaluate regional lung ventilation distribution in patients suffering from chronic heart failure (CHF) after completing inspiratory muscle training (IMT) and correlate it with functional capacity and quality of…
- Trial name
- NCT01593007
- Testing
- Inspiratory muscle training, Control group
- Where
- Brazil
- Volunteers
- 19 people
- Sponsor
- Universidade Federal de Pernambuco
COPD
Diaphragm Release Manual Technique Efficacy in COPD Patients
The aims of this study are to evaluate the effects of Diaphragm Release Manual Technique on diaphragm mobility, chest wall kinematics and functional capacity of COPD patients.
- Trial name
- NCT02212184
- Testing
- Manual Diaphragm Release Technique
- Where
- Brazil
- Volunteers
- 26 people
- Sponsor
- Helga Cecília Muniz de Souza
Validation of PVI in Tidal Volume Challenge Test
PVI for TVC Response
Determine the ability of changes in Plethysmographic Variability Index during tidal volume challenge to predict fluid responsiveness
- Trial name
- NCT04978909
- Where
- Taiwan
- Volunteers
- 50 people
- Sponsor
- National Taiwan University Hospital
Study Vasodilatory Effects of C21
Effect of C21 on Forearm Blood Flow
The purpose of this study is to assess the effect of C21 on forearm blood flow by use of strain-gauge venous occlusion plethysmography.
- Trial name
- NCT05277922
- Testing
- C21, Sodium Nitroprusside
- Where
- Sweden
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Vicore Pharma AB
Surgeries Undergoing General Anesthesia
PPV vs PVI in the Supine and Prone Position
This is a prospective study that will record the Pulse Pressure Variability (PPV) from the arterial line and Plethysmography Variability Index (PVI) from the pulse oximeter while the patient is in the supine position and then…
- Trial name
- NCT07415603
- Testing
- Observation
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- Joseph D. Tobias
Hypertension
Role of Endothelin in the Regulation of Vascular Tone in Patients With Essential Hypertension
Endothelin-1 (ET-1) is a powerful vasoconstricting peptide produced predominantly by vascular endothelial cells, that exerts its effect through the interaction with specific receptors, ETA and ETB, on the underlying smooth muscle…
- Trial name
- NCT00001527
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Pre-Eclampsia, Severe, Pregnancy
Finger Plethysmography to Predict Fluid Responsiveness in Healthy Pregnancy and Severe Preeclampsia
The goal of this observational study is to determine whether noninvasive finger plethysmographic cardiac output monitoring can help predict fluid responsiveness in pregnant women, including those with preeclampsia with severe…
- Trial name
- NCT07430254
- Testing
- Noninvasive finger plethysmographic cardiac output monitoring, Standard transthoracic echocardiographic assessment
- Where
- United States
- Volunteers
- 88 people, healthy volunteers welcome
- Sponsor
- Stanford University
Pregnancy
Therapeutic Omegas for Triglyceride Suppression
This study plans to learn more about how an omega-3 fatty acid supplement effects triglyceride levels in pregnancy. Triglycerides are a type of fat found in your blood.
- Trial name
- TOTS (NCT04349475)
- Testing
- Intervention Omega 3 Supplementation
- Where
- 2 sites in United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Cardiovascular Disease, Heart Failure
Effects of Urocortins on Forearm Arterial Blood Flow in Healthy Volunteers - Protocol 4
Impairment of the heart's pumping capacity (heart failure) remains a major clinical problem with a poor prognosis and the search for novel treatments remains an important area of research.
- Trial name
- NCT01296607
- Testing
- Urocortin 2, Urocortin 3
- Where
- United Kingdom
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Autonomic Nervous System Modulation
Estimation of Autonomic Nervous System Modulation by Pulse Plethysmographic Analysis
Novel pulse plethysmography-derived indexes has been proposed as a tool to measure autonomic nervous system modulation in anaesthetized and awake patients, but nowadays a physiologic validation is lacking.
- Trial name
- NCT01966198
- Testing
- Tilt test
- Where
- Italy
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- ASST Fatebenefratelli Sacco
Spinal Induced Hypotension
PVI for Prediction of Spinal Induced Hypotension
The hypothesis is that plethysmography variability index can predict the occurrence of hypotension after spinal anesthesia for cesarean delivery
- Trial name
- NCT01967914
- Testing
- PVI
- Where
- United States
- Volunteers
- 38 people
- Sponsor
- Duke University