Validation of automated oscillometric sphygmomanometer (HDBPM) for arterial pressure measurement during haemodialysis

An HDBPM oscillometric sphygmomanometer used for the automatic measurement of arterial blood pressure is evaluated according to the ANSI/AAMI SP10-199 2 standard. The accuracy of the HDBPM is ascertained by comparing it agains t the standard Riva-Rocci ascultatory method. Following the ascultatory met hod, two independent observers use the HDBPM devise to simultaneously measu re the arterial blood pressure in 92 subjects of varying ages and having di fferent blood pressures and arm sires. High agreement is found when compari ng the observers' pressure determinations (within 10 mmHg for 100% of obser vations). Correlation between the average of two ascultatory determinations and the HDBPM is high both for the systolic (r = 0.98) and diastolic (r = 0.94) pressures. The mean of the differences between the pressures measured by the observers and the HDBPM device are 0.2mmHg (systolic) and -0.4mmHg (diastolic). The percentages of readings within 10mmHg between those taken by the observers and those taken by the HDBPM are 88% (systolic) and 97% (d iastolic). These results largely satisfy current requirements.