Obstructive Sleep Apnea & Endothelial Function in Patients With Resistant

Status Completed

Clinical Trial Summary

The purpose of this study is to determine the prevalence of obstructive sleep apnea and associate it with the endothelial function behavior in patients with resistant hypertension. Two groups will be evaluate, one presenting uncontrolled high blood pressure, and other, with controlled blood pressure by drugs.

Clinical Trial Description

Introduction: Obstructive sleep apnea (OSA) is considered an independent risk factor for cardiovascular disease. There is evidence that individuals with OSA may have increased inflammatory mediators, changes in the metabolic profile, increased sympathetic activity with consequent elevation of blood pressure (BP) and endothelial dysfunction. Resistant hypertension (RH) is defined as uncontrolled blood pressure (BP ≥ 140/90mmHg) despite the current use of three hypotensive drugs at full doses, including a diuretic, or the need for >3 medications to control BP. OSA has been reported as the most common secondary cause of high blood pressure maintenance.

Objective: To determine the prevalence of OSA and associate it with the endothelial function behavior in patients with resistant hypertension comparing to those with BP controlled by medication.

Methods: A cross-sectional study involving 40 hypertensive patients (20 with resistant hypertension and 20 with controlled BP), irrespective of race or gender, with ages between 18 and 75 years. BP was measured by oscillometric method on automatic device. Endothelial function was assessed by peripheral arterial tonometry (PAT) by EndoPAT2000® and the OSA diagnosis also through PAT, using the portable device WatchPAT200®. Anthropometric evaluation was performed through measurements of waist, hip and neck circumference, body mass index, waist to height ratio (WHtR), and body composition assessed by bioelectrical impedance. Statistical analyzes were performed by GraphPad Prism software. ;

Study Design

Observational Model: Case Control, Time Perspective: Prospective

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT01854190
Study type	Observational [Patient Registry]
Source	Rio de Janeiro State University
Contact
Status	Completed
Phase	N/A
Start date	July 2012
Completion date	May 2013

View Details

See also
Status	Clinical Trial	Phase
Recruiting	`NCT05857384` - Bioavailability, Bioequivalence and Tolerability of IHL-42X Compared to the Reference Drugs	Phase 1
Recruiting	`NCT04547543` - Follow-up of Apneic Patients by Visio-consultation	N/A
Recruiting	`NCT05371509` - Novel Myofunctional Water Bottle to Reduce OSA and Snoring Study	N/A
Completed	`NCT02515357` - Mediterranean Diet/Lifestyle Intervention in Obstructive Sleep Apnea	N/A
Completed	`NCT05582070` - Effect on Sleep of Surgical Treatment of Severe Nasal Obstruction	N/A
Active, not recruiting	`NCT03189173` - Combined Upper-airway and Breathing Control Therapies for Obstructive Sleep Apnea	Phase 2
Completed	`NCT04084899` - The Effect of CPAP on Lung Hyperinflation in Patients With OSA
Completed	`NCT03032029` - Registry on the Treatment of Central and Complex Sleep-Disordered Breathing With Adaptive Servo-Ventilation
Recruiting	`NCT04028011` - Clinical Evaluation of a Wearable Technology for the Diagnosis of Sleep Apnoea
Recruiting	`NCT06047353` - Community Health Advocates for Motivating PAP Use in Our Neighborhoods.	N/A
Completed	`NCT05253963` - Acute Effect of CPAP on Weight in Patients With Obstructive Sleep Apnea	N/A
Recruiting	`NCT06029959` - Stroke and CPAP Outcome Study 3	N/A
Recruiting	`NCT06150352` - Sleep Apnea, Neurocognitive Decline and Brain Imaging in Patients With Subjective or Mild Cognitive Impairment
Completed	`NCT03589417` - Postural Stability, Balance and Fall Risk in Patients With Obstructive Sleep Apnea
Recruiting	`NCT04335994` - ENhancing Outcomes in Cognitive Impairment Through Use of Home Sleep ApNea Testing	N/A
Withdrawn	`NCT04063436` - Evaluation of a New Nasal Pillows Mask for the Treatment of Obstructive Sleep Apnea	N/A
Recruiting	`NCT05385302` - Sociological Determinants of Positive Airway Pressure Adherence in OSA Patients
Recruiting	`NCT04572269` - Metabolomics of Obstructive Sleep Apnea
Withdrawn	`NCT04011358` - Retinal Vein Occlusion and Obstructive Sleep Apnea: A Case Control Study	N/A
Completed	`NCT02894242` - The Evaluation of a Nasal Pillows Mask for the Treatment of Obstructive Sleep Apnea (OSA)	N/A

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Obstructive Sleep Apnea and Endothelial Function in Patients With Resistant Hypertension

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms