Prevalence and Pattern of Abnormal Glucose Tolerance in Adult Nigerians with Primary Hypertension

ABSTRACT

Background: Hypertension and diabetes mellitus relate to one another aetiologically and prognostically. Studies show that hypertension occurs frequently in diabetics than non-diabetics. Data on the prevalence of abnormal glucose tolerance in hypertensive Nigerians are scanty. This study assesses the magnitude of this problem in adult Nigerians with primary hypertension. Method: Oral glucose tolerance test was performed on 124 adult Nigerians (64hypertensives; 60normotensives) to determine the prevalence of abnormal glucose tolerance. Body mass index and waist circumference were measured. Plasma glucose was analyzed by the glucose oxidase method. Results: The hypertensive(32 males;32females) and normotensive (30males; 30females) had mean ages of 47.6+/-10.1years and 44.2+/-7.6years.The mean body mass index and waist circumference of hypertensives and normotensives were 30.2+/-80kg/m;100.8+/-17.2cm and28.5kg/m;88.5+/-14.1cm. The mean plasma glucose in mmols/l; during oral glucose tolerance test of hypertensives and normotensives; at 0hr; 1hr and 2hrs were;4.79+/-0.99;6.94+/-1.5;5.96+/-1.82 and4.42+/-0.90;6.25+/-1.02;5.05++/-1.8 respectively. The response to glucose load was significantly higher in the hypertensives than normotensives particularly at 2hours p