Effect of antihypertensive treatment on cognitive function of older patients

doi:10.1136/bmj.313.7050.166a

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C D Irvine,
S H Irvine

Research registrar Vascular Research Unit, Bristol Royal Infirmary, Bristol BS2 8HW
Professor of psychology Human Assessment Laboratory, University of Plymouth, Plymouth PL4 8AA

Effect is not proved

EDITOR,—On the basis of the results of two cognitive tests Martin J Prince and colleagues conclude that hypertensive drug regimens in elderly people impair cognition no more than does a placebo.1 This may lead to the changes suggested by the key message “Concerns about damaging cognition should not deter doctors from treating hypertension in older patients.” We have concerns about the study's design: the nature of the outcome measures used, the lack of any run in period before treatment to minimise practice …