Author: Dr. Hima Bindu
What is Cryoablation?
Cyoablation is a procedure in which an extremely cold liquid or an instrument called a cryoprobe is used to freeze and destroy some tissue. A cryoprobe is cooled with substances such as liquid nitrogen, liquid nitrous oxide, or compressed argon gas.
When cryoablation is done to ablate a nerve to relieve pain it is called cryoneurolysis. cryoneuroablation, also known as cryoanalgesia or cryoneurolysis, is a specialized technique for providing long-term pain relief in pain management.
“Some say the world will end in fire, Some say in ice.
From what I’ve tasted of desire, I hold with those who favour fire.
But if it had to perish twice, I think I know enough of hate
To say that for destruction Ice is also great And would suffice.”
HISTORY OF CRYOABLATION:
Man has known the use of cold for analgesia for thousands of years. Hippocrates (460-377 BC) left us the first written records of the use of ice for pain relief, describing how snow was brought down the mountains in ancient Greece and applied to wounds for pain relief.
Modern cryoanalgesia traces its roots to Cooper who developed in 1961 a device that used liquid nitrogen in a hollow tube that was insulated at the tip and achieved a temperature of -1900 C. Amoils an ophthalmic surgeon, developed a simpler hand held device in 1967, which used carbon dioxide or nitrous oxide and could achieve temperature of -700C.
Lloyd coined the term ‘’cryoanalgesia’’ for its use in pain management. He proposed that this technique was superior to other methods of peripheral nerve destruction, e.g. alcohol, phenol, or surgical lesions, because it is not followed by neuritis or neuralgia.
What is the advantage of Cryoablation over Radiofrequency?
Cryoneurolysis is much safer way of performing neurolysis. Long term complications are less with cryoneurolysis.
Chances of differentiation (increase of pain instead of decreasing) pain is not there in cryoneurolysis, which is an important complication of radiofrequency procedures.
|CRYOABLATION VS RF ABLATION||CRYOABLATION||RADIOFREQUENCY|
|Indications||Neurolysis of peripheral nerves||Neurolysis of peripheral nerves|
|Method of action||Cold (-600 to -800C)||Heat (+60 to +900C)|
|Introducer size||12G,14G,16G, 18G, 20G, 22G||16G,18G,20G,22G|
|Functional limitations||Large introducers, recent probes are thin||Poor neurolysis in poorly perfused areas near bone|
|Length of Neurolysis||+++||+|
|Ease of use||+++||++|
What are the clinical applications in CRANIOFACIAL PAIN?
What are the clinical applications in ABDOMINAL AND PELVIC PAIN?
What are the clinical applications in LOW BACK AND LOWER EXTREMITY PAIN?
What are the clinical applications in UPPER EXTREMITY PAIN?
What are the clinical applications in CHEST WALL PAIN?
It is somewhat more difficult to address post-thoracotomy neuromas, persistent pain after rib fractures, or thoracic post herpetic neuralgia, but percutaneous technique can provide excellent analgesia.
What are the Contraindications?
General contraindications to percutaneous cryoneurolysis are quite basic:
What is the efficacy of cryoablation to control cancer pain?
Cryoablation is effective in controlling cancer pain without relevant side effects.