Tens Lecture

August 21, 2022 | Author: Anonymous | Category: N/A
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T.E.N.S. Trancutaneous Electrical Nerve Stimulation

 

General • An Approach to painConcepts: control  – Trancutaneous  –  Trancutaneous Electrical Nerve Stimulation:  – Any  –  Any stimulation in which a current is applied across the skin to stimulate nerves  –  1965 Gate Control Theory created a great  – 1965  popularity of TENS  – TENS  –  TENS has 50-80% efficacy rate  – TENS  –  TENS stimulates afferent sensory fibers to elicit production of neurohumneral substances such as endorphins, enkephalins and serotonin (i.e. gate theory)

 

TENS • Indications  –  Control Chronic Pain  –  Management postsurgical pain  –  Reduction of posttraumatic & acute pain

• Precautions  –  Can mask underlying  pain  –  Burns or skin irritation  –  prolonged  –   prolonged use may result in muscle spasm/soreness  –  caffeine intake may reduce effectiveness  –  Narcotics  –   Narcotics decrease effectiveness

 

TENS may be: • high voltage • interferential • acuscope • low voltage AC stimulator  • classical portable TENS unit

 

Biophysical Effects • Primary use is to control pain through Gate Control Theory • May produce muscle contractions • Various methods  –  High TENS (Activate A-delta fibers)  – High  – Low  –  Low TENS (release of  of -endorphins -endorphins from  pituitary)  – Brief-Intense  –  Brief-Intense TENS (noxious stimulation to active C fibers)

 

Techniques of TENS application: • Conventional or High Frequency • Acupuncture or Low Frequency • Brief Intense • Burst Mode • Modulated

 

Protocol for Various Methods of  TENS Parameter

High TENS

Low TENS

Brief-Intense TENS

Intensity Pulse Fq

Sensory 60-100 pps

Motor 2-4 pps

Noxious Variable

Pulse Duration Mode

60-100 sec 150-250 sec Modulated

Tx Duration

As needed

Modulated Burst 30 min

Onset of  Relief 

< 10 min

20-40 min

300-1000sec Modluated

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