Hypertension Clinical Trial
Official title:
Influence of Age, Weight and Ethnic Background on Blood Pressure: AWE Study
Hypertension, also known as high blood pressure, is a chronic medical condition, in which the blood pressure is elevated. This is a common condition, which can lead to severe complications such as cardiovascular disease, heart attack, stroke and kidney disease, if not detected and treated early. Accumulating evidence suggests that the incidence of hypertension varies according to age, ethnicity and obesity. In order to obtain an in-depth knowledge of the pathophysiological mechanisms of hypertension, we aim to investigate the haemodynamic and biochemical correlates of elevated blood pressure across the adult age-span, and determine the extent to which body size and ethnicity impact on these associations. We also wish to investigate the impact of hypertension on key target organs (end-organ damage). The primary objective of this study is to compare the mechanisms regulating blood pressure in hypertensive and non-hypertensive participants across the adult age span, and to assess the influence of body mass index and ethnic background on these mechanisms. Secondary objectives are to investigate the association between blood pressure and cardiovascular physiology across the adult age span at rest and during sub-maximal exercise and to investigate the impact of blood pressure haemodynamics on key organs including the arteries and heart by assessing end-organ damage such as endothelial function, arterial structure and left ventricular mass/function. This study will be a combined case-control and cross-sectional study describing the procedures and time commitment required to investigate our scientific aims. This is a single centre study that will be conducted in a secondary care environment. Both male and females aged 18 and over and that are able provide informed consent will be considered for this study. People who are pregnant, currently receiving dialysis, illness with a life expectancy <1 year, current active malignancy and cannot provide informed consent are ineligible for this study. The study will be open for five years and each patient will complete a maximum of four visits in a 12 month period. Participants will complete a variety of non-invasive physiological assessments of their cardiovascular system and lung function. There will be some minimally invasive procedures completed, including a blood test and assessment of small artery endothelial function which involves insertion of a small needle under local anesthetic.
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