Autonomic Function Testing (AFT)

This series of tests measures autonomic functions (blood pressure, heart rate, and ability to sweat) during various activities. Four specific tests are performed:

1. Recording sweat response from four electrodes placed on the skin of the arm, leg and foot.
2. Recording heart rate and blood pressure during deep breathing.
3. Recording heart rate and blood pressure while blowing into a tube.
4. 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.

Reference:

Assessment: Clinical autonomic testing report of the Therapeutics and Technology Assessment Subcommittee of the American Academy of Neurology.
Neurology. 1996;46:873-880.

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