Hypertension Clinical Trial
Official title:
The Effect of Chronic Remote Ischaemic Preconditioning on Blood Pressure in Older Adults
The purpose of this study is to assess whether remote ischaemic conditioning, applied chronically, improves vascular health in older adults
Hypertension and stroke remain leading causes of mortality across the world (1). Hypertension affects more than 1 in 4 adults and is the 3rd biggest risk factor for premature death and disability in the UK (2). Cerebrovascular disease is ranked 4th in the list of leading causes of death in the UK (3). At present, the treatment of these conditions largely involves chronic pharmacotherapy. In parallel, it is increasingly appreciated that polypharmacy poses a significant challenge to our older adult population. Guthrie et al showed that the number of people prescribed >5 medications in an area of the UK doubled between 1995 and 2010 (from 11.4% to 20.8%) (4). Age is significantly associated with polypharmacy, with an odds ratio of 118.3 when those aged 20-29 are compared to those >80. What's more, it has been estimated that adverse drug reactions account for 6.5% of hospital admissions (5), with age correlating significantly with admissions for this reason. Therefore, discovering a non-pharmacological intervention for hypertension and cerebrovascular disease could greatly benefit the population, particularly the elderly, both in terms of treating the diseases themselves and reducing the harmful effects of polypharmacy. Remote ischaemic preconditioning (RIPC) is the induction of non-lethal ischaemia in one organ or tissue, with the aim of conditioning a distant organ or tissue against ischaemic events. It is achieved via inflation of a blood pressure cuff to supra-systolic pressures for a short period of time. A recent meta-analysis showed that chronic RIC, but not acute RIC, significantly lowered diastolic and mean arterial blood pressure (6). The studies included in this review were small and performed in a younger population, hence larger studies are needed to clarify the effect of RIC in the field of hypertension and, importantly, the elderly. ;
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