Predictors of Left Ventricular Hypertrophy in Hypertensive Patients in Assiut Governorate

To recognize predictors of left ventricular hypertrophy in hypertensive patients in Assiut government & to recognize the prognostic effect of central blood pressure measurement versus office brachial blood pressure measurement.

Study Overview

• Status: Completed
• Conditions: Hypertrophy, Left Ventricular; HTN
• Intervention / Treatment: Diagnostic test: Echocardiography; Diagnostic test: ECG; Device: sphygmomanometer; Device: mobilogragh

Detailed Description

Many cohort studies have demonstrated that hypertension is a strong risk factor for total mortality and cardiovascular disease (CVD) in both developing and developed countries.

Although brachial blood pressure (BP) mea¬surements have been used for over a century more and more data suggest that measuring of brachial BP has important limitations. First, a few office BP readings may not be representa¬tive of BP during a patient's daily life. Second, brachial BP may differ from systolic BP mea¬sured at the level of the ascending aorta, i.e. central BP, which is responsible for left ventri¬cle afterload and determines blood flow through coronary and brain arteries .

Recent data from the Strong Heart Study confirm earlier results from smaller studies on high-risk patients that central pulse pressure is superior to brachial pulse pressure in the prediction of further cardiovascular events.

The results of the Conduit Artery Function Evaluation (CAFE) study reminded clinicians of the importance of CBP. Those results demonstrated significant differences in CBP (central SBP and PP) between patient groups treated with different antihypertensive regimens even though peripheral BP levels were comparably lowered, and suggested the potential superiority of CBP to cuff brachial BP in cardiovascular prognostic predictive value in hypertensive patients.

Modifiable risk factors for CVD that are common among adults with hypertension include cigarette smoking/tobacco smoke exposure, DM, dyslipidemia (including high levels of low-density lipoprotein cholesterol or hypercholesterolemia, high levels of triglycerides, and low levels of high-density lipoprotein cholesterol), overweight/obesity, physical inactivity/low fitness level, and unhealthy diet .

There are clear examples around the world of ethnic variations in response to drug therapies epitomized by the benefits of thiazide diuretics and calcium channel blockers in lowering BP in blacks and perhaps in older people of all races, whereas blockers of the renin angiotensin system and β-adrenoceptor receptor blockers are just as effective in some other populations.

Urbanization is a factor that profoundly affects BP patterns. In developed countries, hypertension is more common in rural populations than in urban. This pattern is reversed in developing, lower-, and middle-income countries where the first impact of rising rates of hypertension is seen in urban communities.

• Study Type: Observational
• Enrollment (Actual): 300

Contacts and Locations

Study Locations

• Egypt
  • Assiut, Egypt
    • Assiut university of medicine

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Hypertensive patient recorded in our outpatient clinic during the last two years will be included retrospectively & new hypertensive patients presenting to our outpatient clinic will be included prospectively for 1 year .

Description

Inclusion Criteria:

• Hypertensive patient recorded in our outpatient clinic during the last two years will be included retrospectively & new hypertensive patients presenting to our outpatient clinic will be included prospectively for 1 year .

Exclusion Criteria:

• Patient aged less than 18 year old.
• Patients from outside Assiut government .
• Ischemic heart diasease .
• Heart failure .
• Cerebrovascular stroke .
• Diabetes mellitus .
• Patients on regular dialysis .

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
hypertensive patients	Diagnostic test: Echocardiography; Echocardiography; Diagnostic test: ECG; Electrocardiogram; Device: sphygmomanometer; device used for measurement of brachial blood pressure; Device: mobilogragh; device used for measurement of central blood pressure

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Correlation between brachial blood pressure (measured by sphygmomanometer ) and left ventricular mass index measured by echocardiography to recognize predictors of left ventricular hypertrophy in HTN patients	baseline
Correlation between non invasive central blood pressure (measured by mobilograph ) and left ventricular mass index (measured by echocardiography) to recognize predictors of left ventricular hypertrophy in HTN patients	Base line

Collaborators and Investigators

• Sponsor: Assiut University

Study record dates

Study Major Dates

• Study Start (ACTUAL): October 1, 2019
• Primary Completion (ACTUAL): September 30, 2020
• Study Completion (ACTUAL): September 30, 2020

Study Registration Dates

• First Submitted: January 3, 2018
• First Submitted That Met QC Criteria: March 28, 2018
• First Posted (ACTUAL): March 29, 2018

Study Record Updates

• Last Update Posted (ACTUAL): September 29, 2021
• Last Update Submitted That Met QC Criteria: September 24, 2021
• Last Verified: January 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Heart Diseases; Cardiovascular Diseases; Pathological Conditions, Anatomical; Cardiomegaly; Hypertrophy; Hypertrophy, Left Ventricular
• Other Study ID Numbers: LVH in HTN

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No