[Prevalence of left ventricular hypertrophy in Danish patients with hypertension].

The aim of this investigation was to study the prevalence of left ventricular hypertrophy (LVH) in a hypertensive population with reference to a normotensive control group. From the general population, 3498 men and women aged 35, 45, 55 and 65 years old were invited to a health examination. Participants with blood pressure above 160 mmHg systolic and/or 95 mmHg diastolic or participants currently taking antihypertensive medication or having done so during the previous six months were asked to undergo an echocardiographic examination. Controls were randomly selected from the same population. Of 552 participants in the final study population, 194 were normotensive controls and 358 were in the hypertensive group. Echocardiographic measurements were made according to the "Penn" conventions and indexed for body surface. Cutoff values for LVH were 134 grams per m2 for males and 102 grams per m2 for women. Overall, we found that the prevalence of 1 VH was 14%/20% (men/women) in normotensives and 25%/26% in hypertensives (p < 0.01). By subdivision in age and sex groups we found that the relation between normotensives and hypertensives was significant in the age group of 65 years (p < 0.02 for males and p < 0.05 for females). The association between blood pressure and 1 VH in the general population is weak. 1 VH is only significantly more frequent among hypertensives as compared to normotensives in older people.