Clinical trials: Distension
Postural Tachycardia Syndrome (POTS)
Effect of Dietary Sodium Intake on Vascular Endothelium
The investigators will test the hypothesis that markers of vascular endothelial dysfunction will be exaggerated acutely with an extreme high sodium diet compared to an extreme low-sodium diet.
- Trial name
- NCT01550315
- Testing
- Pulsitile Arterial Tonometry (PAT) Protocol, Calf Blood Flow in Reactive Hyperemia (CBF-RH), Evaluation of Forearm-Mediated Dilation
- Where
- United States
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center
Chronic Obstructive Pulmonary Disease (COPD)
Long Term Nitric Oxide Bioavailability on Vascular Health in Chronic Obstructive Pulmonary Disease
Chronic obstructive pulmonary disease (COPD) affects up to 14 million people and is among the top five leading causes of death worldwide.
- Trial name
- COPD-LT (NCT02774226)
- Testing
- Tetrahydrobiopterin (BH4), Antioxidant Cocktail
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Augusta University
Mydriasis, Dilation
Safety and Efficacy of Nyxol (0.75% Phentolamine Ophthalmic Solution) to Reverse Pharmacologically-Induced Mydriasis
The objectives of this study are: To evaluate the efficacy of Nyxol to expedite the reversal of pharmacologically-induced mydriasis across multiple mydriatic agents with an emphasis on phenylephrine To evaluate the efficacy of…
- Trial name
- NCT04620213
- Testing
- Phentolamine Ophthalmic Solution 0.75%
- Where
- 12 sites in United States
- Volunteers
- 185 people, healthy volunteers welcome
- Sponsor
- Opus Genetics, Inc
Esophageal Dilation, Refractory Benign Esophageal Stricture
Outcomes of Esophageal Self Dilation for Benign Refractory Esophageal Stricture Management
This study is being done to see which treatment is more effective in improving the difficulty of swallowing. Researchers are comparing self-dilation to endoscopic dilation.
- Trial name
- NCT03738566
- Testing
- Esophageal self-dilation therapy, Endoscopic therapy with esophageal dilation
- Where
- United States
- Volunteers
- 26 people
- Sponsor
- Mayo Clinic
Abortion, Induced
Value of Mifepristone in Cervical Preparation Prior to Dilation and Evacuation 19-24 Weeks
A common practice for preparation for surgical abortion after 19 weeks gestation is the placement of multiple sets of osmostic dilators 1-2 days prior to the procedure.
- Trial name
- NCT01615731
- Testing
- Mifepristone, Hygroscopic cervical dilators, Misoprostol
- Where
- 2 sites in United States
- Volunteers
- 50 people
- Sponsor
- Stanford University
Second Trimester Abortion
Laminaria Compared to Dilapan-S for Cervical Preparation Before Dilation and Evacuation at 18-24 Weeks of Gestation
Primary objective: To study the difference in dilation and evacuation (D\&E) procedure time following overnight cervical preparation with laminaria or Dilapan-S™.
- Trial name
- NCT02033083
- Testing
- Laminaria, Dilapan-S
- Where
- United States
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Planned Parenthood of Greater New York
Sinusitis
Medical Therapy Versus Balloon Sinus Dilation for Patients With Chronic Rhinosinusitis
This post-market study aims to compare health outcomes for Chronic Rhinosinusitis (CRS) patients treated with balloon sinus dilation (BSD) versus continued medical management.
- Trial name
- MERLOT (NCT01685229)
- Testing
- Balloon sinus dilation, Medical Management
- Where
- 20 sites in United States
- Volunteers
- 198 people
- Sponsor
- Integra LifeSciences Corporation
Healthy
Radial Artery Dilation Study: The Effect of Topical Administration of Nitroglycerin and Lidocaine Versus Lidocaine Alone of the Radial Artery Diameter
The radial artery, which is located on the outer side of the forearm, can be used in interventional procedures, such as cardiac catheterization, to provide access to the arterial blood supply.
- Trial name
- NCT00686231
- Testing
- Nitroglycerin 15mg, Nitroglycerin 30mg, Lidocaine 20mg
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Smoking
Endothelial Function and Autonomic Regulation After Short-term Smoking Cessation: Varenicline Versus Placebo
The purpose of this study is to evaluate endothelial function and autonomic regulation (for example, heart rate and blood pressure) in smokers before and after short-term smoking cessation.
- Trial name
- NCT00673595
- Testing
- Varenicline
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Keratoconus, Cornea Ectasia
Safety and Efficacy of Corneal Crosslinking Using the PXL-Platinum 330 for Eyes With Corneal Ectatic Conditions
To evaluate the safety and effectiveness of the PXL Platinum 330 device for performing Corneal Crosslinking in patients with corneal thinning conditions.
- Trial name
- NCT04240457
- Testing
- Epithelial-on Corneal Crosslinking with the PXL 330 Platinum system.
- Where
- United States
- Volunteers
- 11 people
- Sponsor
- Arbor Center for Eye Care
Sinusitis
Sinus Balloon Dilation in Pediatric Patients
Safety and effectiveness of sinus balloon dilation in patients 2-21 years old.
- Trial name
- NCT02278484
- Testing
- XprESS device and PathAssist confirmation tools
- Where
- 4 sites in United States
- Volunteers
- 50 people
- Sponsor
- Entellus Medical, Inc.
Procedural Pain, Buprenorphine
Addition of Buprenorphine to Paracervical Block for Pain Control During Osmotic Dilator Insertion
Cervical preparation with osmotic dilators is commonly used prior to dilation and evacuation (D\&E) procedures to decrease the risk of complications.
- Conditions
- Procedural Pain, Buprenorphine, Adjuvants, Anesthesia, Dilation and Evacuation
- Trial name
- ABCD&E (NCT04254081)
- Testing
- Buprenorphine 0.15 MG, Lidocaine 1% Injectable Solution
- Where
- United States
- Volunteers
- 57 people
- Sponsor
- University of California, San Diego
Therapeutic Abortion
Same-day Dilapan-S With Adjunctive Misoprostol
Cervical preparation before second trimester dilation and evacuation (D\&E) reduces risks and complications. Osmotic cervical dilators as well as prostaglandin analogues have been studied for cervical preparation.
- Trial name
- DAM (NCT01818414)
- Testing
- Misoprostol, Folic Acid
- Where
- 2 sites in United States
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Improve Endothelial Function and Decrease Vascular Stenosis
Phosphodiesterase Type 5 Inhibition to Improve Endothelial Function and Vascular Remodeling in Chronic Kidney Disease and End Stage Renal Disease Patients Requiring New Arteriovenous Fistula
Patients with stage IV and V chronic kidney disease and end stage renal disease requiring hemodialysis at University of Alabama at Birmingham (UAB) Dialysis Clinics will be recruited from the UAB Vascular Access Clinic, which has…
- Trial name
- NCT02414204
- Testing
- Sildenafil
- Where
- United States
- Volunteers
- 4 people
- Sponsor
- University of Alabama at Birmingham
Abortion, Induced
Cervical Preparation Before Dilation and Evacuation
The purpose of this research study is to compare three different ways of opening a woman's cervix before her second-trimester surgical abortion.
- Trial name
- NCT01751087
- Testing
- Mifepristone, misoprostol, Osmotic dilators
- Where
- 7 sites in United States
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Planned Parenthood League of Massachusetts
Contraceptive Usage
'Levonorgestrel IUD Insertion After D&E Procedure
This study is a randomized controlled trial of insertion of the levonorgestrel-releasing intrauterine device (LNG-IUD) immediately following dilation \& evacuation (D\&E) compared to delayed insertion 3-6 weeks post-D\&E.
- Trial name
- ILIAD (NCT00475228)
- Testing
- Levonorgestrel IUD
- Where
- United States
- Volunteers
- 93 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Ischemic Heart Disease, Coronary Artery Stenosis
A Clinical Evaluation of the MINI TREK RX 1.20 mm Coronary Dilatation Catheter in Stenotic Lesions
This is a prospective, single-arm, open-label, multi-center, observational study to assess the acute safety and efficacy of MINI TREK RX 1.20 mm for enlarging coronary luminal diameter during percutaneous coronary intervention…
- Conditions
- Ischemic Heart Disease, Coronary Artery Stenosis, Chronic Coronary Total Occlusion, Coronary Bypass Graft Stenosis
- Trial name
- CROSS (NCT01186198)
- Testing
- MINI TREK RX 1.20 mm Coronary Dilatation Catheter
- Where
- 4 sites in United States
- Volunteers
- 71 people
- Sponsor
- Abbott Medical Devices
Endothelial Dysfunction
A Clinical Trial for People HIV+ Age > 50 at Risk for Heart Disease
This research study is to see whether blood vessel function, an early sign of heart disease, improves in HIV-infected men and women who take telmisartan for 12 weeks.
- Trial name
- NCT01578772
- Testing
- Telmisartan
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- University of California, Los Angeles
Chronic Sinusitis, Chronic Rhinosinusitis (Diagnosis)
XprESS Maxillary Balloon Dilation Study
A prospective, single-arm, post approval pilot study.
- Trial name
- NCT01525862
- Testing
- Balloon sinus dilation
- Where
- 2 sites in United States
- Volunteers
- 21 people
- Sponsor
- Entellus Medical, Inc.
Vascular Function
Effect of Black Tea on Vascular Function
Epidemiological studies indicate that regular consumption of three cups of black tea per day reduces the risk of stroke or myocardial infarction.
- Trial name
- Heraclitus (NCT01945970)
- Testing
- Black tea extract, Positive control
- Where
- Italy
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Unilever R&D