Clinical trials: Plethysmography
High Blood Pressure
Microcirculation and Inflammatory Markers in Patients With Resistant, Stages 1/2 Hypertension and Normal Blood Pressure
Nailfold videocapillaroscopy (NVC), Venous occlusion Plethysmography (VOP) and inflammatory biomarkers have been used to study endothelial function in patients with resistant hypertension, stages 1 and 2 hypertension and…
- Trial name
- MICRORAH (NCT02759276)
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Daniel Alexandre Bottino
Bronchial Hyperreactivity, Abnormal Respiratory Airway Resistance
Diagnostic Utility of Different Airway Resistance Assessment Techniques in the Methacholine Challenge Test
The aim of the study is to compare standard spirometric evaluation of methacholine challenge test with plethysmographic, interrupter technique and forced oscillation technique (FOT) evaluation of the airways resistance.
- Trial name
- NCT02343419
- Testing
- Methacholine Challenge Test
- Where
- Poland
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Medical University of Warsaw
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
Pulmonary Disease
Validation of Structured Light Plethysmography
Measurements of Structured Light Plethysmography (SLP) using a chest wall movement based method will be compared to those obtained by spirometry using a flow based pneumotachograph method.
- Trial name
- SLPvsPNT (NCT02598336)
- Testing
- Structured Light Plethysmography, Pneumotachograph Spirometry
- Where
- United Kingdom
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- Pneumacare Ltd
Aortic Pulse Wave Velocity
Validation of Optical Device for Aortic Pulse Wave Velocity Measurement
Existing techniques available for capturing reliable aortic pulse wave velocity measurements and estimating aortic stiffness are costly and require technical expertise.
- Trial name
- NCT05400421
- Testing
- System & Method for Monitoring Aortic Pulse Wave Velocity & Blood Pressure
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- VitalSines International Inc.
Lipodystrophy
Carotid Doppler Peak Velocity Variation in Liposuction Fluid Management
This study aims to compare the hemodynamic parameters, postoperative plethysmography variability index, the total amount of postoperative intravenous fluid administration needed, and the urine output of two methods of fluid…
- Trial name
- NCT05930106
- Testing
- Intraoperative fluid ratio, Carotid Artery Doppler Peak Velocity Variation
- Where
- Mexico
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- TJ Plast Advanced Center for Plastic Surgery
Apnea, Circulatory; Change
Plethysmography Curve Variability Depending on the Breath Cycle
The aim of the study is to analyze the variability of plethysmography curve depending on the breath cycle (respiratory rate and tidal volume).
- Conditions
- Apnea, Circulatory; Change, Respiration
- Trial name
- NCT05302219
- Testing
- Respiratory rate, Tidal volume, Apnea
- Where
- Czechia
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Czech Technical University in Prague
Vascular Disease, Heart Disease
Gap Junction Potentiation of Endothelial Function With Rotigaptide
Hypothesis - Rotigaptide will improve endothelial function in the context of endothelial dysfunction. The lining of blood vessels (endothelium) can react to hormones in the blood stream causing the blood vessel muscle to relax…
- Trial name
- NCT00901563
- Testing
- Rotigaptide, Forearm vascular study
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Pulmonary Disease, Chronic Obstructive
Effect of GSK1160724 In Healthy Volunteers
GSK1160724 is a potent mAChR antagonist, which is being developed for treatment of chronic obstructive pulmonary disease (COPD)
- Trial name
- NCT00555022
- Testing
- GSK1160724, Tiotropium bromide
- Where
- United Kingdom
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- GlaxoSmithKline
Face Mask Squeeze, Respiratory Complication
Respirator and Breathing Compartments
The purpose of this study was to compare breathing pattern and involvement of individual breathing compartments (IBC) with and without filtering facepiece respirator (FFR) during rest and exercise.
- Trial name
- Breathing (NCT06053502)
- Testing
- filtering facepiece respirator
- Where
- Czechia
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- University of South Bohemia
Insulin Resistance, Obesity
Tea-beetroot-venous Occlusion Plethysmography
In the present study, muscle perfusion will be studied before and after an oral glucose challenge following a fasting period.
- Trial name
- NCT01746329
- Testing
- Tea, Beet root
- Where
- Netherlands
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Unilever R&D
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
Asthma
Bronchial Dilation Test in Wheezy Infants
The purpose of the study is to establish the methodology of bronchial dilation test by salbutamol MDI with Spacer in wheezy infants with asthma and to evaluate the effects of atopy on the exacerbation of wheeze in wheezy infants.
- Trial name
- NCT03467776
- Where
- China
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Guangzhou Institute of Respiratory Disease
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
Limb Volume, Measuring Edema
Measuring Volume Using a 3D Scanner and iPad to Grade the Swelling of Legs
We used a new and easy-to-measure iPad 3D scanner to measure swelling in lower limbs because current technology is not easily available or affordable.
- Trial name
- NCT06944041
- Testing
- STO3 sensor (Structure Inc., Boulder, CO)
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- The RANE Center for Venous and Lymphatic Diseases at St. Dominic's Hospital
Dysfunctional Breathing
Structured Light Plethysmography Against Standard of Care in the Diagnosis and Monitoring of Dysfunctional Breathing
This is an observational, controlled, single-centre study to validate the Thora3Di™ against standard practice in patients who are undergoing investigation for disproportionate breathlessness.
- Trial name
- SLPDB (NCT04255446)
- Testing
- Thora3DiTM
- Where
- United Kingdom
- Volunteers
- healthy volunteers welcome
- Sponsor
- Pneumacare Ltd
Healthy
Face Masks to Reduce the Adverse Effects of Diesel Exhaust Inhalation
Air pollution exposure is a major environmental and public health concern. The findings from controlled exposure studies have given biological plausibility to the epidemiological associations, and have defined important pathways…
- Trial name
- FM-RADIO (NCT02729129)
- Testing
- Diesel exhaust exposure with filtered facemask
- Where
- Sweden
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Umeå University
Bronchiolitis
Pneumacare SLP Validation in Infants and in Clinical Bronchiolitis
A cohort observational study to characterise baseline Structured Light Plethysmography (SLP) outputs in infants with bronchiolitis and examine response to treatment using the Thora3DiTM
- Trial name
- NCT02881632
- Testing
- Structured Light Plethysmography (SLP) - Pneumscan
- Where
- United Kingdom
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University Hospitals of North Midlands NHS Trust
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)
Swallowing Disorders
Swallowing Disorders in Geriatrics Studied With Respiratory Plethysmography by Inductance
The purpose of this study is to evaluate the efficiency of a novel non-invasive method for swallowing disorders detection in geriatrics.
- Trial name
- PRIOD (NCT00827749)
- Testing
- respiratory plethysmography by inductance
- Where
- France
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University Hospital, Grenoble