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Basics of  Radio Frequency techniques in Pain Management Dr. Ashok  Jadon, MD DNB Sr. Consultant & HOD Anaesthesia Tata Motors Hospital, Jamshedpur
Principle of RF lesion  ,[object Object],[object Object],[object Object],[object Object]
stylet Exposed tip = 5 mm RF electrode
 
Principle of RF (contd.) ,[object Object],[object Object]
Conventional vs. Pulsed RF ,[object Object],[object Object],[object Object],[object Object],In pulsed RF. Electrical field produces some punch in the capacitor of small diameter nociceptive fibers. Thereby signal transmission is stopped.
Conventional vs. Pulsed RF ,[object Object],[object Object],[object Object],[object Object]
Lesion characteristics ,[object Object],[object Object],[object Object],[object Object]
Impedance ,[object Object],[object Object],[object Object]
Lesion size versus Lesion Time  CW: 20V, t=  0 sec COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
CW: 20V, t=10 sec COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
CW: 20V, t=20 sec COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
CW: 20V, t=30 sec COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
CW: 20V, t=40 sec COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
CW: 20V, t=50 sec COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
CW: 20V, t=60 sec COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
CW: 20V, t=60 sec   50˚C Isotherm |E|=2,750 V/m |E|=17,000 V/m COSMAN, MIT 37˚C 40˚C 45˚C 60˚C 55˚C 50˚C 67˚C
Choice Between Conventional RF & Pulsed RF ,[object Object],[object Object],[object Object]
Localization of the Target nerve ,[object Object],[object Object],[object Object],[object Object],[object Object]
Conventional RF ,[object Object],[object Object],[object Object],[object Object]
Clinical   Indications of  Conventional RF ,[object Object]
Indications of Conventional RF Contd… Cervical facet joint denervation Sacro -iliac Joint denervation
Conventional RF Contd.. Lumber facet joint denervation
Indication of Pulse RF ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Stellate  Ganglion RF
Cervical DRG lesioning
Lumber DRG lesioning
Lumber DRG lesioning
Lumber sympathetic block
Complications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Conclusion ,[object Object],[object Object]
[object Object],[object Object],[object Object]
Thank You

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Basics of radio frequency techniques in pain management jadon.a