This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which of the following is most accurate in describing coblation intracapsular tonsillectomy? 
Select and explain. 
A. Electric energy is transferred to vibration energy, B. lt can only cut, and not coagulate, C. . lt creates significant thermal injury to tissues, D. lt utilizes a thin layer of ionized sodium to ablate tissues
B: lt can only cut, and not coagulate
Answer: B: lt can only cut, and not coagulate 
Explanation: It utilizes a thin layer of ionized sodium to ablate tissues The newer methods of tonsillectomy include: a. Coblation b. Harmonic scapel c.Ligasure (Thermal Welding) d. Laser e. Intra-capsular methods Coblation Uses radiofrequency (RF) energy to ionize NaCI in a saline medium, then the energy of these ions (plasma) is used to break molecular tissue bonds * May also be used for direct hemostasis * RF energy is supposed to stay in the irrigation to minimize collateral heating * Temperatue is not supposed to exceed 70 C (cautery is routinely 200-400 C) * Most studies indicate less pain than electrocautery, some cite equivalent pain to cold knife * Intraoperative blood loss comparable to electrocautery * No electrical connection to patient * Very high cost compared to electrocautery or cold knife ($150-200/piece) * Operative times up to twice as long than electrocautery * Aggressive marketing campaign targeted to lay public