ANS (Autonomic Nervous System)
testing for diabetes is a non-invasive diagnostic procedure that measures how nerve damage from diabetes affects involuntary body functions. It checks for Diabetic Autonomic Neuropathy (DAN) by evaluating heart rate variability, blood pressure, and sweat gland function to identify early complications, such as cardiac damage or silent heart attacks.
Key Aspects of ANS Testing:
- Key Aspects of ANS Testing:
- Purpose: Detects damage to small, unmyelinated nerves controlling internal organs. It is recommended for managing both Type 1 and Type 2 diabetes to catch complications early.
- Common Tests:
- Heart Rate Variability (HRV) to Deep Breathing: Evaluates how the heart rate changes during breathing.
- Valsalva Maneuver: Measures blood pressure and heart rate changes while forcing air against a closed airway.
- Tilt Table Test: Monitors blood pressure and heart rate while moving from lying to standing, checking for orthostatic hypotension (fainting).
- Quantitative Sudomotor Axon Reflex Test (QSART): Measures sweat gland response to small electrical currents to assess nerve function.
- What it Detects: Identifies Cardiac Autonomic Neuropathy (CAN), digestive problems (gastroparesis), and abnormal sweat gland function.
The tests usually take 1–2 hours and help providers create targeted treatment plans to improve quality of life and reduce risks.