[Borderline hypertension].
According to WHO criteria in 1978, borderline hypertension is defined as systolic blood pressure between 140 and 159 mmHg and/or diastolic blood pressure between 90 and 94 mmHg. Compared with direct intravascular pressure measurement, values obtained by the conventional cuff method were 2 mmHg lower in systolic pressure and 2 mmHg higher in diastolic pressure. The precision of the cuff method was approximately +/- 4 mmHg in both systolic and diastolic pressures. In 20 patients with mild hypertension, arterial pressure fluctuated with respiration within ranges from 6 to 32 mmHg in systole and from 3 to 14 mmHg in diastole. From these results, repetitive blood pressure measurements are recommended for the diagnosis of borderline hypertension. Borderline hypertension is the most sensitive predictor of definite hypertension in the future. Long term follow up should be stressed.
Yamaguchi
I
I
Department of Laboratory Medicine, Yamagata University School of Medicine.
Miyazawa
K
K
D000367:Age Factors; D001794:Blood Pressure; D002940:Circadian Rhythm; D004562:Electrocardiography; D005500:Follow-Up Studies; D006801:Humans; D006973:Hypertension / Q000175:diagnosis* / Q000503:physiopathology; D012015:Reference Standards