How to Take A Blood Pressure
It seems that most people have problems with high blood pressure and are on multiple medications to control their hypertension. This is sometimes a problem in the hospital as well.
The more commonly life threatening issue than hypertension is hypotension (low blood pressure). Hypotension can be a late sign of a terrible infection (septic shock), or a sign of bleeding or dehydration (hypovolemic shock). This video is a very clear breakdown of how to take a patient's blood pressure.