Screening for hypertension in a high school population.

Of 15 594 high school students (ages, 15 to 20) whose blood pressure was measured in a screening program, 350 (2.2%) has hypertensive readings (150 mm Hg or more systolic, or 95 mm Hg or more diastolic, or both). The mean blood pressure for the boys was 125.0 plus or minus 12.1/71.8 plus or minus 10.9 mm Hg, and for the girls, 119.8 plus or minus 10.2/72.3 plus or minus 9.2 mm Hg. The parents of the students with hypertensive readings were advised to send their children to a physician. By 6 months, of the 232 who were followed up, 156 (67.2%) has visited a physician and in 19 cases (12.2%) the physician had confirmed the hypertensive readings. Only one student, an asymptomatic 17-year-old boy whose hypertension had not previously been detected, was found to have secondary hypertension, which was relieved surgically. Of the 18 hypertensive students 4 are currently receiving antihypertensive medication and 8 continue to have their blood pressure monitored. The mean blood pressures recorded in the physicians' offices averaged 23.7/11.1 mm Hg less than those recorded in the schools. One reason for this was that none of the physicians used pediatric cuffs, but these were required by 62.4% of the students at the screening. Hence, the intravascular blood pressure was probably underestimated in a number of cases in the physicians' offices.