Evaluation of Stendo Pulsating Suit on Microcirculation and Central Blood Pressure in Essential Hypertension Patients

Study Overview
=================
Brief Summary
-----------------
The action of one Stendo pulsating suit session will be evaluated on 24 patients referred to the hypertension consultations for essential hypertension treated but not stabilized. The effect of one Stendo pulsating suit session system will be mainly assessed on the peripheral cutaneous microcirculation and on the central arterial pressure.

Detailed Description
-----------------
The role of the endothelium in micro-vascular system is mediated by synthesis and release of numerous substances that act on the smooth muscle fibres. The release of these products is modulated, in turn, by various circulating molecules, by the autonomic nervous system and by local mechanical factors such as shear stress. The essential hypertension is associated to increased risks of cardiovascular and stroke morbidity and mortality and constitutes a major cause of severe kidney failure. The essential hypertension is a complex and multi-factorial disease; the dysfunction of the endothelium is of a great importance in the physiopathology of this disease, concerning both the consequences of the increase of the blood pressure and the possible cause of the hypertension development. The Stendo pulsating suit is expected to increase the cutaneous microcirculation measured by laser Doppler laser flowmetry and potentially to decrease the central blood pressure. Each patient will be his own witness and the clinical records will be assessed before, during when relevant, and after a pulsating suit session.

Official Title
-----------------
Evaluation of the Action of the Stendo Pulsating Suit on Peripheral Microcirculation and on Central Blood Pressure in Essential Hypertension Patients Treated But Not Stabilized

Conditions
-----------------
Essential Hypertension

Intervention / Treatment
-----------------
* Device: Stendo pulsating suit System


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Patient referred to the Hypertension Hospital Consultation for essential hypertension treated but not stabilized Patient with essential hypertension defined by a brachial arterial pressure of 140 ≤ Systolic Arterial Pressure < 180 mm Hg and/or 90 ≤ Diastolic Arterial - Pressure < 110 mm Hg Essential Hypertension confirmed by an ambulatory measure of the arterial pressure during 24 hours before the pre-inclusion visit Patients aged more than 40 and less than 70 Exclusion Criteria: Patient with secondary hypertension Patient with diabetes Patient with complete arrhythmia with atrial fibrillation Patient with an advanced obstructive arterial disease Patient with a recent and progressive deep venous thrombosis

Ages Eligible for Study
-----------------
Minimum Age: 40 Years
Maximum Age: 70 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Stendo pulsating suit System<br>One 20 minutes Stendo pulsating suit session will be applied to the patient. | Device: Stendo pulsating suit System<br>* The Stendo system, a multilayer pulsatile inflatable suit is applied to the lower limbs and the abdomen. This device induces a sequential compartmentalized compression synchronized with each diastolic phase of the cardiac cycle, each phase evolving centripetally (lower limbs to abdomen).<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Peripheral microcirculation measured using Laser Doppler flowmetry | Change in % of the peripheral cutaneous microcirculation using laser Doppler flowmetry after one Stendo pulsating suit session | 35 minutes after the end of the Stendo session at D1 + 7 jours +/- 3 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Humeral arterial pressure | Humeral arterial pressure using automatic measures with Dinamap device | 20 minutes after the end of Stendo session at D1 + 7 jours +/- 3 | 
| Central blood pressure | Central blood pressure measured by applanation using an applanation tonometry device; Central pulse pressure, Augmentation Index and subendocardial viability ratio will also be assessed. | Just after the end of the Stendo session.at D1 + 7 jours +/- 3 | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Essential Hypertension, Central Blood Pressure, Microcirculation, Endothelium Stimulation