Active clinical trials for "Constriction, Pathologic"

This study will assess and compare the levels of pain, discomfort, and functional impairments between rapid and slow maxillary expansion in treating skeletal maxillary constriction in the early adolescence period (i.e. between 12 and 16 years). The study sample will consist of 32 patients who suffer from a skeletal posterior crossbite. The sample will be allocated randomly into two groups: RME group and SME group. The patients will be asked to fill out the attached questionnaires at three assessment times.

The study evaluates the use of a biomimetic stent (SUPERA®) and a drug eluting balloon (DEB - Passeo 18 Lux) for the treatment of recurrent and tight cephalic arch stenosis in patients with brachiocephalic fistulas. All participants will undergo angioplasty with stated devices, and be followed up with over 12 months.

A novel stent, called Universal Partially Covered Removable Self-expanding Stent and Anchoring System for the Treatment of Refractory Benign Esophageal Strictures (UAS-RBS) was designed to improve the treatment of benign esophageal refractory strictures with a novel stent. This study aims at evaluating the safety of this new device.

Feasibility Trial on the ACURATE TA™ transapical implantation in patients presenting severe symptomatic aortic stenosis to collect human feasibility data pertaining to the safety and performance of the device.

INCREASE OF PROSTAGLANDIN E2 IN REVERSAL OF DUCTAL CONSTRICTION AFTER DIETARY RESTRICTION OF POLYPHENOLS. Clinical trial with a healthy group as comparator. The interventional group was made up of third-trimester mothers whose single fetuses had ductal constriction, excluding those exposed to NSAID, and the control group only by third-trimester normal fetuses. The interventional group was submitted to dietary orientation to restrict polyphenol-rich foods and both groups answered a food frequency questionnaire after fetal Doppler-echocardiographic examination and blood draw for PGE2 levels analysis. After two weeks, the women were again submitted to fetal echocardiogram, dietary assessment and blood draw.

A prospective, multicenter, nonrandomized, single-arm, clinical study.

Periodontal Disease (PD) is present in 60+% of adults >65 years and is associated with tobacco smoking, diabetes, and atherosclerosis that worsen inflammation, comorbidities common in older people with mild to moderate cognitive impairment (MCI). Older MCI patients are prone to poor oral hygiene and dental health, which if untreated worsens inflammation-mediated brain and nervous system function, and accelerates progression to dementia. Asymptomatic carotid artery stenosis (ACAS) is often a silent disease detected in only ~10% of older adults, and may have a strong association with MCI. This study examines the effects of intensive therapy for periodontitis on cognition in high-risk older people with ACAS. Results could highlight PD as a readily modifiable risk factor for dementia.

Feasibility testing of a cap-assisted endoscopic bougienage for benign upper GI stenosis with direct optical control.

To evaluate the safety and effectiveness of the SAPIEN XT (Edwards Lifesciences, Irvine, California) transcatheter heart valve implantation (TAVI) in Chinese patients with symptomatic severe calcific aortic stenosis who are considered at high risk for surgical valve replacement.

In ERCP guidewires are used for the insertion of endoprostheses and the cannulation of stenosis. This leads to two essential requirements for the wire systems: The use of a (highly) flexible, hydrophilic wire to achieve successful and rapid passage of the narrow passage; for additional intervention, modern wires are equipped with a stable shaft with which e.g. bougies, dilatation catheters, or stents can be introduced. Guidewires are available with angled or straight tips whose use differ regionally. Guidewires with angled tips are used predominantly in Japan, whereas in the Western world incl. Germany straight wires are commonly used. In a recently published study examining the intubation of the native papilla, successful intubation of the papilla was faster with guidewires with angled tips than with guidewires with straight tips. However, this did not result in an effect upon the time-independent rate of the successful papilla intubation. The investigators test the hypothesis that 1) a higher success rate of the ERCP can be achieved with the use of an angled guidewire than with a straight guidewire and 2) a higher success rate of the ERCP can be achieved with the use of a type 1 guidewire than with a type 2 guidewire