What happens next?

How to take orthostatic blood pressure
Ask the person to lie down for five minutes.
He should be completely flat on a table, bed or couch. Wrap the sphygmomanometer, or blood pressure gauge, armband firmly around the person's upper right arm and secure it with the velcro strip.
Place your stethoscope over the brachial artery. With the blood pressure cuff wrapped around the person's arm, have her palm facing upwards and place the stethoscope on the inside of the elbow.