Clinical trials: Variability
Vascular Reaction to Medications
Variability in Adrenergic Response
The goal of this project is to determine the genetic factors contributing to interindividual differences in response to physiological and pharmacological vasoconstrictors and vasodilators.
- Trial name
- NCT00838695
- Testing
- Phenylephrine
- Where
- United States
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Cancer
Variability of Definitions for Survival Endpoints and Surrogate Properties for OS in Sarcoma Trials: a Meta-analysis
The DATECAN-2 project aims at assessing the surrogate properties for OS of several time-to-event endpoints through meta-analyses of completed and published randomized controlled trials.
- Trial name
- DATECAN-2 (NCT02873923)
- Testing
- undefined
- Volunteers
- 2,846 people
- Sponsor
- Institut Bergonié
Diabetes Mellitus, Type 2
An Efficacy Study of Canagliflozin or Sitagliptin to Determine Glucose Variability in Mexican Participants With Type 2 Diabetes Mellitus Inadequately Controlled on Metformin
The main purpose of this study is to assess the effects of 4 weeks each of daily treatment with canagliflozin 300 milligram (mg) versus sitagliptin 100 mg as treatment adjuncts to metformin (at stable dosages) on intrapatient…
- Trial name
- COMETA (NCT03267576)
- Testing
- Canagliflozin 300 mg, Sitagliptin 100 mg, Metformin
- Where
- 5 sites in Mexico
- Volunteers
- 64 people
- Sponsor
- Janssen Research & Development, LLC
Type 2 Diabetes Mellitus
An Exploratory Study of the Effects of Trelagliptin and Alogliptin on Glucose Variability in Patients With Type 2 Diabetes Mellitus
This is a multi-center, randomized, open-label, parallel-group comparative, exploratory study to evaluate the effect of trelagliptin administered at a dose of 100 mg once weekly or alogliptin administered at a dose of 25 mg once…
- Trial name
- TRACK (NCT02771093)
- Testing
- Trelagliptin, Alogliptin
- Where
- Japan
- Volunteers
- 27 people
- Sponsor
- Takeda
Cerebrovascular Accident
Mechanisms of Upper-Extremity Motor Recovery in Post-stroke Hemiparesis
The results of this study will provide sound, scientific evidence of physiologic mechanisms responsible for upper-extremity weakness; evidence of the processes involved in neuromuscular adaptation; and will elucidate the…
- Trial name
- NCT00125658
- Testing
- Control, Experimental
- Where
- United States
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Hypertension
24 Hour Ambulatory Cardiac Oxygen Consumption
A randomized,double-blind, active controlled,15 week study to evaluate the effects of nebivolol and valsartan alone and in combination on 24-hour ambulatory cardiac work and variability of heart rate-mean central systolic…
- Trial name
- ACRPP (NCT05170061)
- Testing
- Nebivolol, Valsartan, Nebivolol/valsartan combination
- Where
- United States
- Volunteers
- 26 people
- Sponsor
- State University of New York at Buffalo
Type 2 Diabetes
FLuctuATion Reduction With inSULin and Glp-1 Added togetheR (FLAT-SUGAR)
Results of recent studies using standard long and short acting insulin therapy (Basal - Bolus or BBI) in type 2 diabetes mellitus (T2DM) have not shown benefits to lower risks for heart attacks, strokes, or eye, nerve and kidney…
- Trial name
- FLAT-SUGAR (NCT01524705)
- Testing
- Insulin Glargine, Metformin, Prandial insulin
- Where
- 12 sites in United States
- Volunteers
- 102 people
- Sponsor
- University of Washington
Type 2 Diabetes
Impact on Glycemic Variability in Newly Onset T2DM Patients Initiating Dapagliflozin Plus Metformin Versus Metformin Alone
This study will compare the effect of Dapagliflozin added to Metformin vs Metformin alone on blood sugar fluctuations of adults with a recent diagnosis of Type 2 Diabetes (T2D). The duration of the protocol will be 12 weeks.
- Trial name
- MAGNNIFY (NCT04090580)
- Testing
- Continuous glucose monitoring
- Where
- Mexico
- Volunteers
- 88 people
- Sponsor
- Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran
Anesthesia, Neuromuscular Blockade
The Effect of Neuromuscular Blockade on the Composite Variability Index (CVI) During Laryngoscopy
The Bispectral Index (BIS) monitor is used in many operating rooms to provide information to the anesthesiologist about a patient's level of consciousness.
- Trial name
- NCT01450813
- Testing
- Saline 0.06 ml/kg, Rocuronium 0.2 mg/kg, Rocuronium 0.4 mg/kg
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- Medtronic - MITG
Premature Birth, Maternal Distress - Delivered
Heart Rate Variability and Prematurity
Mothers who deliver prematurely (<37 weeks of gestational age) experience intense stress and anxiety given that their child's survival and development might be compromised.
- Conditions
- Premature Birth, Maternal Distress - Delivered, Stress, Anxiety
- Trial name
- NCT03565874
- Testing
- Heart rate variability biofeedback
- Where
- Switzerland
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- University of Lausanne Hospitals
Liver Fibrosis, Liver Diseases
Beyond Confounders: Addressing Source of Measurement Variability and Error in Shear Wave Elastography
Chronic liver disease is a major problem in the general population and there is an unmet need to diagnose(and screen) for liver disease with using noninvasive, cost-effective and sensitive techniques.The investigators hypothesize…
- Trial name
- NCT03342560
- Testing
- Sonographic SWE measurements with 4 different ultrasound systems
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Massachusetts General Hospital
Type 2 Diabetes Mellitus
Efficacy of Sitagliptin and Glibenclamide on the Glucose Variability in Japanese Participants With Type 2 Diabetes Mellitus (MK-0431-355)
This is a study of the efficacy of sitagliptin and glibenclamide in a short-term treatment on the glucose variability using continuous glucose monitoring (CGM) in Japanese participants with type 2 diabetes mellitus (T2DM).
- Trial name
- NCT02318693
- Testing
- Sitagliptin, Glibenclamide
- Volunteers
- 53 people
- Sponsor
- Merck Sharp & Dohme LLC
Fibromyalgia, Mitochondrial Diseases
Heart Rate Variability in Response to Metformin Challenge
Diseases caused by brain energy supply defects can be innate (fibromyalgia secondary to familial mitochondrial disorders) or acquired (tardive dyskinesia or weight gain associated with prolonged antipsychotic use).
- Conditions
- Fibromyalgia, Mitochondrial Diseases, Movement Disorders, Diabetes Mellitus, Type 2
- Trial name
- NCT02500628
- Testing
- Metformin
- Where
- United States
- Volunteers
- 61 people
- Sponsor
- Woodinville Psychiatric Associates
Ventilation, Reproducibility
Assessing Variability of the Ventilatory Response to Duffin's Rebreathing Procedure
This study will combine Duffin's rebreathing procedure with additional study procedures, such as quantitative pupillometry, that are planned for subsequent clinical studies in order to confirm feasibility and gather…
- Conditions
- Ventilation, Reproducibility, Physiology
- Trial name
- NCT05168501
- Testing
- Rebreathing procedure
- Where
- United States
- Volunteers
- 7 people, healthy volunteers welcome
- Sponsor
- Food and Drug Administration (FDA)
Tobacco Smoking
Heart Rate Variability Biofeedback for Smoking Cessation
Open trial of heart rate variability biofeedback as an adjunct to individualized smoking cessation counseling (SCT) plus transdermal nicotine replacement patch (NRT) in smokers with elevated emotional distress.
- Trial name
- HRVB-SCT (NCT03972137)
- Testing
- Cognitive-Behavioral Smoking Cessation, Heart Rate Variability Biofeedback (HRVB), Transdermal Nicotine patch
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Rutgers, The State University of New Jersey
Heavy Drinking, Harmful; Use, Alcohol
A PPG Sensor-Based Feedback Intervention for Heavy Drinking Young Adults
Heavy alcohol use among young adults is a significant public health problem. Advances in technology may offer an innovative solution.
- Trial name
- NCT05090995
- Testing
- Behavioral Self-Management and Feedback, Behavioral Self-Management
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Yale University
Ischemic Heart Disease
Perceived Social Support, Heart Rate Variability, and Hopelessness in Patients With Ischemic Heart Disease
Cardiovascular disease is the leading cause of death worldwide, with ischemic heart disease (IHD) the leading cause of cardiovascular mortality.
- Trial name
- Hope Beats (NCT05003791)
- Where
- United States
- Volunteers
- 48 people
- Sponsor
- University of Illinois Chicago
Type 2 Diabetes, Hypoglycemia
Glycemic Excursions in Type 2 Diabetic Patients With Vildagliptin and Metformin Versus Vildagliptin and Glimepiride
The purpose of this study was to compare the effect of a fixed dose combination of vildagliptin plus metformin versus combination therapy of glimepiride plus metformin in glycemic variability in patients with type 2 diabetes who…
- Trial name
- GLOBE (NCT02007278)
- Testing
- vildagliptin and metformin (combination), glimepiride, Metformin
- Where
- 8 sites in Colombia
- Volunteers
- 40 people
- Sponsor
- Novartis Pharmaceuticals
Type 2 Diabetes Mellitus
Effect of Insulin Degludec Versus Insulin Glargine on Glycemic Variability in Patients With Type 2 Diabetes Mellitus
Type 2 diabetes mellitus (T2DM) is characterized by wide fluctuations of glucose. The long-acting insulin has showed to improve glycemic variability however the behavior of insulin glargine versus insulin degludec is unknown.
- Trial name
- Diabetes (NCT02680457)
- Testing
- Insulin Degludec, Insulin Glargine
- Where
- Mexico
- Volunteers
- 12 people
- Sponsor
- University of Guadalajara
Glaucoma
Variability in Perimetry Study
Improved Assessment of Visual Field Change is a trial aimed at investigating mechanisms of visual field testing variability. The investigators have found using larger stimulus size substantially lowers short-term variability.
- Trial name
- VIPII (NCT01051739)
- Testing
- Comparison of four visual field testing strategies
- Where
- United States
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development