autonomic testing

Indications

• assessment of autonomic dysfunction

Procedure

• sudomotor
  • quantitative sudomotor axon reflex test (QSART)
  • silastic sweat imprint
  • thermoregulatory sweat test
  • changes in sympathetic skin potential
• vasomotor adrenergic innervation (sympathetic function)
  • beat-to-beat blood pressure & R-R interval changes during Valsalva maneuver
  • at least 5 minutes of passive tilt
• cardiovagal innervation (parasympathetic function)
  • heart rate response to deep breathing with recorded R-R interval
  • Valsalva ratio
  • 30:15 ratio

More general terms

• clinical procedure

Additional terms

• autonomic nervous system