2003 HBP news tips( phones. And it provides two-way conve...),Health

phones. And, it provides two-way convenience with both patients and physicians being able to check data or send messages at any time of the day. Researchers studied 38 men and 22 women, average age 50, being treated for hypertension. Patients used home monitoring systems to collect blood pressure and heart rate data. They used cell phones that connected to an Internet Web site to transmit the data. The patients were monitored for three months. During that time they were asked to check blood pressure at least two times a day -- in the morning and before sleep. Participants also were asked to check blood pressure as often as they could, using the cellular system at different times and locations. Blood pressure data was accumulated at NTT DoCoMo data center. The researchers report that all patients achieved good blood pressure control using the cellular monitoring system, including patients who were managed without using blood pressure-lowering medicines. Moreover, the cost for the system was only about $1 a month.

1:30 p.m. Abstract P221 Black girls retain more sodium if calcium intake is low. Researchers measured sodium (Na) excretion in 40 black and 28 white adolescent girls 11-15 years old. The study was divided into two sessions of three weeks each. The girls ate diets with either 1.3 grams per day (g/d) or 4 g/d of dietary sodium, plus dietary calcium in one of three levels -- 800 milligrams per day (mg/d), 1300 mg/d or 1800 mg/d. Researchers measured daily urinary and fecal sodium levels. While consuming the low-calcium, high-sodium diet, blacks had lower urinary sodium excretion (2,671 mg/d) than whites (3,485 mg/d). However, at higher levels of calcium intake, urinary sodium was similar between blacks and whites even on the high-sodium diet (3,743 mg/d in blacks and 3,889 mg/d in whites). Sodium retention may increase risk for hypertension in this population.

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Contact: Carole Bullock
carole.bullock@heart.org
214-706-1279
American Heart Association
25-Sep-2003

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