PHYSIOLOGICAL AND THERAPEUTIC EFFECTS OF TENS.pptx

THIS PRESENTATON ILLUSTRATES ABOUT VARIOUS PHYSIOLOGICAL AND THERAPEUTIC EFFECTS OF TRANSCUTANEOUS ELECTRICAL NERVE STIMULATION. IN THIS, YOU CAN UNDERSTAND THE EFFECTS ACCORDING TO THE TYPES OF TENS. KNOWLEDGE OF THE EFFECTS WILL ENABLE THE PHYSIOTHERAPIST TO SELECT APPROPRIATE TYPE OF TENS TO BE APPLIED FOR PATIENT.

1. PHYSIOLOGICAL AND THERAPEUTIC EFFECTS OF T RANSCUTANEOUS ELECTRICAL NERVE STIMULATION DR. NEHA INGALE-CHAUDHARY MPT NEURO PROFESSOR (HOD) 2 ND YEAR : ELECTROTHERAPY

2. PURPOSE OF LECTURE At the end of lecture students should understand the physiological and therapeutic effects of tens.

3. LEARNING OBJECTIVES Sr.no Learning objectives domain level criteria 1 EXPLAIN THE PAIN GATE MECHANISM Cognitive Must know All 2 EXPLAIN VARIOUS PHYSIOLOGICAL EFFECTS OF TENS Cognitive & Psychomotor Must know All 3 EXPLAIN VARIOUS THERAPEUTIC EFFECTS OF TENS Cognitive & Psychomotor Must know All

4. ULTIMATE AIM OF APPLICATION OF TENS IS- PAIN RELIEF

5. PHYSIOLOGICAL AND THERAPEUTIC EFFECTS OF TENS. CONVENTIONAL TENS:- Selectively activate A β fibers (touch related) , without concurrently activating A δ or c fibers (pain related). TENS induced activation of large diameter fibers inhibits the ongoing transmission of nocciceptive information in the spinal cord and reduces central sensitization ( by activating inhibitory interneuron).

6. Due to its high frequency effect mostly given in case of chronic cases.

7. LOW TENS: Activate small diameter A δ fibers that causes muscle contraction (non painful phasic muscle twitch) Indirect activation of A α fibers. Also activates A β fibers causing segmental analgesia. This causes traffic signal phenomenon and blocks the pain.

8. Burst pattern of low TENS is more tolerable and comfortable than the low frequency single pulses. This releases the endogenous opioids at PAG and RAPHE nucleus causing descending pain suppression system. The low TENS also activates A δ fibers causing segmental analgesia. Used in acute cases mostly

9. BRIEF TENS: Activate small diameter A δ fibers by applying tens electrodes over peripheral nerves arising from the site of pain, at an intensity tolerable to the patients. High frequency of the current doesn’t cause muscle contraction. A δ fibers activity causes peripheral nerve to block nocciceptive impulse and thus causes pain relief.

10. A β fibers are also activated causing segmental analgesia. As the intense TENS acts as counter irritant , it should be given for short time. Useful in minor surgical procedures and wound dressing and suture removal.

11. REFERENCES Claytons electrotherapy edition 9 Low and reed : edition 4 Electrotherapy evidence based practice: 12 th edition.

12. THANK YOU…