Different patient population have
different Envelopes (Oscillometric amplitude)

Whycirca_Oscillometric_amplitude

Has recommended a protocol that blood pressure monitoring devices need different validation in special clinical conditions like diabetes, chronic kidney diseases, end stage renal diseases, elderly population, pregnancy/ pre-eclampsia, obesity, hypotension, patients with AFIB etc.

Circa 120/80 globally availabe as WatchBP Home is the only device validated as per the WHO/AAMI protocols in various patient population to provide accurate blood pressure readings.