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Abstract Details

Establishment of Normative Data for Quantitative Sudomotor Axon-Reflex Test from North India
Neuromuscular and Clinical Neurophysiology (EMG)
P6 - Poster Session 6 (12:00 PM-1:00 PM)
QSART is an important non-invasive tool to assess sudomotor function. There is no normative data available for this test from Indian sub-continent.

 1. To establish normative data for Quantitative sudomotor axon-reflex test (QSART) in  Indian subjects.2. To correlate the sweat volume in QSART with age, gender and BMI

The study was done on 254 healthy subjects of age ≥18 years between April 2017 to September 2019. QSART was performed in autonomic laboratory at the Neurology department of Christian Medical College and Hospital, Ludhiana using Q-Sweat by WR Medical works. Sweat volume in QSART was recorded from four sites: forearm, proximal leg, distal leg and foot. Descriptive and correlation tests were used for the analysis of data. 

The mean age (±SD) of study participants was 43±16.1 years (range 20-84), and 129 (50.8%) were men. The normative value range (2.5 percentile to 97.5 percentile) of sweat volume was 0.230-1.303µl (forearm), 0.236-1.212µl (proximal leg), 0.262-1.254µl (distal leg) and 0.217-1.160µl (foot) for all the subjects. The QSART volume was significantly greater in men in all the sites: forearm (0.673 vs 0.512µl, p<0.001), proximal leg (0.665 vs 0.527µl, p<0.001), distal leg (0.713 vs 0.533µl, p<0.001) and foot (0.548 vs 0.486µl, p<0.001).  There was decline of sweat volume with age for distal leg and foot (p=0.042 and 0.031 respectively) whereas other two sites had no difference. There was no correlation between QSART volume and BMI.

Normative data for QSART has been derived for the first time for Indian subjects.. The pattern of sweating and the variation with age and gender was comparable to other studies however, the quantity of sweat volume was lower in our population.
Silky Adya (Christian Medical College and Hospital)
No disclosure on file
Himani Khatter (Christian Medical College) Ms. Khatter has nothing to disclose.
Bharat Singh No disclosure on file
Jeyaraj Durai Pandian, MD, DM (Christian Medical College) Dr. Pandian has nothing to disclose.
Sheena Singh No disclosure on file