This series of tests measures autonomic functions (blood pressure, heart rate, and ability to sweat) during various activities. Four specific tests are performed:
- Recording sweat response from four electrodes placed on the skin of the arm, leg and foot.
- Recording heart rate and blood pressure during deep breathing.
- Recording heart rate and blood pressure while blowing into a tube.
- Recording heart rate and blood pressure while lying horizontal for five minutes, then in a standing position for 10 minutes, then lying horizontal again for five minutes.
Assessment: Clinical autonomic testing report of the Therapeutics and Technology Assessment Subcommittee of the American Academy of Neurology.