Do SpaceLabs ambulatory non-invasive blood pressure recorders measure blood pressure consistently over several years use?
All 15 SpaceLabs recorders measured consistently over the 6 years with 89.5% of the differences in average pressures, recorded by any particular device at each recorded pressure, less than 2 mmHg between successive test episodes. The maximum difference was 4.5 mmHg and 60.1% of the differences were less than 1 mmHg. The measurements for all devices were within the tolerances specified by the supplier for the device when tested with the simulator. Maintenance records also show that most devices required breakdown maintenance less than once every 3 years. The results show that the SpaceLabs devices maintain measurement consistency in the demanding conditions of ambulatory pressure recording over several years.
MRI-defined vulnerable lesions in carotid arteries are related to accelerated recurrent cerebral infarction and high recurrent rate. MRI demonstrates clinical value in the secondary prevention of cerebral infarction.