Report "Hi I am a Physical therapist, and I have this HEM- 629N2 BP Wrist Monitor. I need to take the BP readings of my Patients and recently I find that I am not able To get correct readings.The readings are on the lower side, than what they should be.This I am informed by the patients themselves. What could be the problem ? I have purchased this just 8-9 months ago. Please help and advise. Thank you,"