Quantitative Sudomotor Axon Reflex Test (QSART)
Quantitative Sudomotor Axon Reflex Test (QSART) is a test to evaluate the integrity of the postganglionic sudomotor system along the axon reflex to define the distribution of sweat loss. This is accomplished by the release of bio-impedance electrical stimulation the skin which activates receptors on the eccrine sweat gland. The sweat response is recorded from four sites (forearm and 3 lower extremity sites) and assessed for deficits.
The QSART is a test that measures the autonomic nerves that control sweating. The test is useful in assessing autonomic nervous system disorders, peripheral neuropathies and some types of pain disorders. The test requires a mild electrical stimulation on the skin, which allows to stimulate sweat glands. The QSART measures the volume of sweat produced by this stimulation.
QSART is used to diagnose:
- Painful, small fiber neuropathy when nerve conduction test results are normal
- Disturbances of the autonomic nervous system, which controls the sweat glands, heart, digestive system, other organs, and blood pressure
- Complex pain disorders
- Diabetic neuropathies
- Enzyme disorders
- RSD (Reflex Sympathetic Dystrophy, Complex Regional Pain Syndrome)
- Pharmaceutical agents
- Cosmetics/Consumer goods testing
- Dermatological studies
- Multiple System Atrophy (Shy-Drager syndrome)
Are your patients affected by Peripheral Autonomic Neuropathy?
SUDOSCAN2 Sudomotor is an a device for galvanic skin response that has been cleared for use by the FDA to test for Peripheral Neuropathies and Sudomotor function.
SUDOSCAN2 evaluates sweat gland function through a process called galvanic skin response. SUDOSCAN2 measures the ability of the sweat glands to release chloride ions in response to a small electrical stimulus on the palms of the hands and soles of the feet.
SUDOSCAN's focus on the small nerve fibers within the autonomic nervous system, and their ability to quickly regenerate, allows for the monitoring of disease progression and can help gauge if your treatment plan is right for patients.
How does it work?
- The patient is asked to put his hands and feet on large electrodes
- A small electric tension is applied to the surface to stimulate the sweat glands
- The results of the response to this stimulation are expressed as :
- Electrochemical Skin Conductance for SUDOSCAN 2, indicating the presence and severity of the small fiber peripheral autonomic neuropathies;
- Percentage of risk for EZSCAN indicating a risk to develop diabetes.
The SUDOSCAN2 testing device is available from Universal Medical Testing. Call 844-783-6722 TODAY!
Universal Medical Testing is a USA distributor of SUDOSCAN2, a product of Impeto Medical.
SUDOSCAN 2 is a new test that provides an accurate evaluation of sweat gland function through galvanic skin response in less than 3 minutes. SUDOSCAN2 measures the ability of the sweat glands to release chloride ions in response to an electrochemical activation on the palm of the hands and soles of the feet, areas with the highest sweat gland density. It is a dynamic test equivalent to a stress test in cardiology.
Instant results for a 3 minutes test
1. Provides a quantitative measure of the sweat conductance on the hands and feet (in units of micro-siemens). This measure can be used to compare with later test results to follow-up patients on the effect of treatment or other prescribed interventions.
2. Evaluates symmetry (left side vs right side of hands and feet). In addition to providing information about skin conductance measurements from palms and soles of feet, SUDOSCAN2 also compares the levels between right versus left-hand side.
Once an abnormality is suspected or confirmed, additional evaluation by the physician with specialized tests are recommended to pinpoint the underlying cause.