Treated white-coat hypertension and masked uncontrolled hypertension were often observed in clinical settings. Physicians need to understand the prevalence of such patients to prevent inadequate diagnosis and treatment in them.

The present study demonstrated that resistant hypertension is mediated at least partly by the white-coat effect. Home BP measurements and other relevant factors associated with resistant hypertension, such as relatively higher office SBP, type of drugs prescribed, and cardiovascular complications, should be taken into account for the diagnosis and treatment of resistant hypertension.

No abstract

In the Japan Home versus Office Blood Pressure Measurement Evaluation (J-HOME) study, we examined the current situation with respect to the prescription of diuretics, including the prevalence of diuretic treatment and the dosages used for patients with essential hypertension in primary care settings. Of the 3,400 hypertensive patients included in the study, 315 (9.3%) patients (mean age: 66.9 ± 10.4 years; males: 43.5%) were prescribed diuretics. Compared with patients who were not using diuretics, those who were using diuretics were more obese and had more complications. The most commonly prescribed diuretic among the 331 prescriptions in the 315 diuretic users was trichlormethiazide (44%), followed by indapamide (15%) and spironolactone (14%). Among patients being treated with diuretics, monotherapy was used in only 5% of patients; in the majority of patients combination therapy including diuretics (95%) was used. Relatively low dosages of diuretics were generally used. There was a difference between the actual dosages prescribed and those recommended by the Japanese Society of Hypertension (JSH) guidelines or the product information approved in Japan. Compared with previous estimates of the prevalence of diuretic use in hypertensives in Japan (4.0-5.4%), the rate in the J-HOME study (9.3%) was higher. This may be attributable at least in part

To investigate the relationship between morning and evening home blood pressure (BP) measurements to make a diagnosis of masked hypertension, we collected information on the characteristics of 3,303 essential hypertensive outpatients receiving antihypertensive medication in Japan using a physician, self-administered questionnaire. All patients were asked to measure their home BP once every morning and once every evening for two weeks. Morning and evening home BP values of each patient were defined as the average of all morning and all evening home BP values, respectively. The mean BP values of all study subjects were 142.8/80.6 mmHg for office BP, 139.8/81.8 mmHg for morning home BP, 133.7/76.9 mmHg for evening home BP, and 136.8/79.3 mmHg for the average of the morning and evening home BPs. Masked hypertension was defined as an office BP < 140/90 mmHg and a home BP > or = 135/85 mmHg. The prevalence of masked hypertension diagnosed using morning home BP (23.1%) was higher than that diagnosed by evening home BP (14.7%); the prevalence was 19.0% when diagnosed using the average of the morning and evening home BPs. Among the 1,386 patients with a normal office BP, the diagnosis of masked hypertension based on morning and evening home BP values differed in 28.8% of patients for systolic BP and 20.9% for diastolic BP (kappa coefficient = 0.43). The present study showed that the prevalence of masked hypertension was underestimated when the diagnosis of masked hypertension was made on the basis of evening home BP.