What is the different electro surgery techniques used in diathermy unit?

Fulguration - The term „fulguration‟ refers to a superficial tissue discoloration without affecting deep-seated tissues.

Desiccation - The needle point electrodes are struck into the tissue and kept steady while passing electric current. This creates a high local increase in heat and drying of tissues takes place. This is called „desiccation‟ which produces dehydration of tissues.

Electrotomy - When the electrode is kept above the skin, an electrical arc is sent. The heat developed produces a wedge shaped narrow cutting of the tissue on the surface.

Coagulation - When the electrode is kept near the skin, high frequency current is sent through the tissue in the form of bursts and heating it locally so that it coagulates from inside