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Effect of Treating Sleep Disorder Breathing in Patients With Resistant Hypertension

2014-08-27 03:19:30 | BioPortfolio

Summary

The investigators would like to investigate the effects of treating sleep apnea with a positive airway pressure device, either continuous (titrated) versus auto titrated on the control of blood pressure in patients with Resistant Hypertension.

Description

One of the major cause and contributor to stroke, myocardial infarction, heart disease, and kidney disease is high blood pressure. Traditional approaches to control of hypertension (HTN) have mostly included pharmaceuticals targeting different mechanisms that contribute to HTN. However, adequate control of Blood pressure continues to remain a major problem.

Sleep Apnea is currently being recognized as a modifiable risk factor for resistant HTN. Sleep disordered breathing represents states of increased sympathetic drive and vagal tone withdrawal, along with significant episodic hypoxia. There is increasing evidence that sleep apnea is highly prevalent in subjects with hypertension and may be a frequent cause of drug-resistant hypertension.

We propose that we compare strategies for treating subjects with Resistant Hypertension who have SDB as detected by ambulatory multi somnogram and treat subjects using:

1. Ambulatory Autotitrating Positive Airway Pressure (APAP) plus Standard medical therapy OR

2. Traditional Polysomnogram and Traditional PSG guided titration of Continuous Positive Airway Pressure (CPAP) plus Standard medical therapy

Our hypothesis is that in subjects with Resistant HTN, who have SDB, using the treatment approach of ambulatory multisomnography for testing and then treating with APAP will be noninferior to the traditional polysomnography plus CPAP approach in the amount of reduction of mean systolic and diastolic 24 hour ambulatory blood pressure, when treated for 90 days.

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Sleep Apnea

Intervention

Autotitrating Positive Airway Pressure (APAP), Traditional Split Titration Polysomnogram

Location

Albert Einstein Medical Center
Philadelphia
Pennsylvania
United States
19141

Status

Recruiting

Source

Albert Einstein Healthcare Network

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:19:30-0400

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Medical and Biotech [MESH] Definitions

Application of positive pressure to the inspiratory phase when the patient has an artificial airway in place and is connected to a ventilator.

Non-therapeutic positive end-expiratory pressure occurring frequently in patients with severe airway obstruction. It can appear with or without the administration of external positive end-expiratory pressure (POSITIVE-PRESSURE RESPIRATION). It presents an important load on the inspiratory muscles which are operating at a mechanical disadvantage due to hyperinflation. Auto-PEEP may cause profound hypotension that should be treated by intravascular volume expansion, increasing the time for expiration, and/or changing from assist mode to intermittent mandatory ventilation mode. (From Harrison's Principles of Internal Medicine, 12th ed, p1127)

A technique of respiratory therapy, in either spontaneously breathing or mechanically ventilated patients, in which airway pressure is maintained above atmospheric pressure throughout the respiratory cycle by pressurization of the ventilatory circuit. (On-Line Medical Dictionary [Internet]. Newcastle upon Tyne(UK): The University Dept. of Medical Oncology: The CancerWEB Project; c1997-2003 [cited 2003 Apr 17]. Available from: http://cancerweb.ncl.ac.uk/omd/)

A type of oropharyngeal airway that provides an alternative to endotracheal intubation and standard mask anesthesia in certain patients. It is introduced into the hypopharynx to form a seal around the larynx thus permitting spontaneous or positive pressure ventilation without penetration of the larynx or esophagus. It is used in place of a facemask in routine anesthesia. The advantages over standard mask anesthesia are better airway control, minimal anesthetic gas leakage, a secure airway during patient transport to the recovery area, and minimal postoperative problems.

Application of positive pressure to the inspiratory phase of spontaneous respiration.

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