This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inhalational Anesthetic Agents, Subject name: Anaesthesia
Which is/ are not desirable for a patient with pacemaker? 
Select and explain. 
A. Thiopentone sodium, B. ECG monitoring, C. Suxamethonium, D. Unipolar diathermy
D: Unipolar diathermy
Answer: D: Unipolar diathermy 
Explanation: unipolar diathermy is not desirable it is preferable to use Bipolar diathermy.