American Heart Association
American Heart Association: Conditions: High Blood Pressure or Hypertension
Find out why high blood pressure is dangerous to your heart and overall health. Learn why and how high blood pressure damages the heart and who is at risk for high blood pressure. Information on treatment and prevention includes a link...
WebMD
Web Md: How a Health Professional Measures Blood Pressure
This resource lists the steps a health professional usually follows in measuring blood pressure. Also listed are factors that may cause a measurement to be inaccurate.