<prompt> An unconscious 50 year old known case of diabetes mellitus is brought to the ER. His medical records show he is on warfarin for atrial fibrillation. Which of the following investigations will not be done in this patient for work up?Lumbar punctureRandom blood sugarNCCTECG monitoring  <response>: Option A- Always CI in bleeding diathesis in ICT Option B- Known case of D.M so RBS should be done. Option C- Since he is unconscious may be dt warfarin toxicity so CT scan is a probable investigation. Option D- patient on warfarin for atrial fibrillation so ECG monitoring is mandatory. 