Question

Electricity is converted into heat to incise a tissue in:

• A. Cryosurgery
• B. Laser surgery
• C. Electrosurgery
• D. Electro acupuncture

Hint:

Remember the core mechanism:
- Electrosurgery = Electricity converted directly to thermal energy via tissue resistance.
- Laser surgery = Coherent light energy converted to thermal energy upon pigment absorption.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Modern veterinary surgery utilizes various energy modalities to cut, coagulate, or ablate tissues.
These modalities convert different physical energy forms (electrical, thermal, light, or sound) into localized heat at the target tissue.

Step 2: Detailed Explanation:
Let us analyze each surgical modality:
- Cryosurgery: Uses extreme cold (typically liquid nitrogen or nitrous oxide) to freeze and destroy diseased tissues, rather than heat.
- Laser surgery: Converts light energy (amplified by stimulated emission of radiation) into thermal energy at the target tissue to cut or vaporize cells.
- Electrosurgery: Uses high-frequency alternating electrical currents passed through target tissues.
The resistance of the tissue to this electrical current converts the electricity into localized thermal energy (heat), vaporizing the cells to create an incision.
- Electro acupuncture: Passes a mild electrical current through acupuncture needles to stimulate nerves, and is not used to incise tissues.

Step 3: Final Answer:
Therefore, electrosurgery is the modality that directly converts electricity into tissue-destructive heat to create an incision.