NONINVASIVE OSCILLOMETRIC WRIST AND UPPER ARM BLOOD-PRESSURE MEASUREMENTS COMPARED WITH INVASIVE VALUES

In 100 patients invasive blood pressure (BP) measurements in the aorti c arch were compared with oscillometric devices at the left upper arm (UA1, device: Hestia OZ 80) and at the left and right wrists (WI, Wr, device: NAiS Blood Pressure Watch). BPs/BPd at Wl were on average 4.3/ 6.0 mmHg higher than aortic BP with a relative high variability. Diffe rence between Wl(s) and Ao(s) more than +/- 20 mmHg in 16% of patients between Wl(d) and Ao(d) more than +/- 20 mmHg in 5% of patients. With in the limits of +/- 10 mmHg, we found 56% of the systolic and 74% of the diastolic wrist values compared to the aorta. The automatic oscill ometric BP measurement at the wrist is a useful method for BP self-mea surement, but should be compared with upper arm values before recommen ding it (difference < +/- 10 mmHg) in the individual case.