There is a large market for blood pressure measuring devices not only in clinical medicine but also among the public where the demand for self measurement of blood pressure is growing rapidly. For consumers, whether medical or lay, accuracy should be of prime importance when selecting a device to measure blood pressure. However, most devices have not been evaluated for accuracy independently using the two most widely used protocols: the British Hypertension Society (BHS) protocol and the standard set by the US Association for the Advancement of Medical Instrumentation (AAMI)., The Working Group on Blood Pressure Monitoring of the European Society of Hypertension has decided to review blood pressure measuring devices regularly to guide purchasers. For this first report devices for which there is published evidence of independent validation using these protocols have been surveyed. Because most blood pressure devices have not been independently validated, only a fraction of the many devices available have been surveyed. Devices that have been validated recently for which results have not yet been published were not included, but this shortcoming should be addressed in future. Validation standards In 1987, the American Association for the Advancement of Medical Instrumentation published a standard for sphygmomanometers which included a protocol for evaluating the accuracy of devices. God Of War 3 Full Game Download.

In 1990 a protocol was devised by the British Hypertension Society. Both protocols have since been revised., Since the two protocols can be reconciled the joint criteria are applied in most validation studies. The House Of The Spirits Pdf Free Download here. The criteria for fulfilling the BHS protocol are that devices must achieve at least grade B (where A denotes greatest agreement with mercury standard and D denotes least agreement) for systolic and for diastolic pressures (table ); the criteria for fulfilling the AAMI protocol are that the test device must not differ from the mercury standard by a mean difference >5 mm Hg or a standard deviation >8 mm Hg. Criteria for recommendation The following criteria have been used to designate devices according to accuracy.