<prompt> A patient was admitted epidural anaesthesia with 15 ml of 1.5. Lignocaine with adrenaline for hernia surgery. He devoled hypotension and respiratory depression within 3 minutes after administration of block. The most common cause would be:Allergy to drug administeredSystemic toxicity to drug administeredPatient got vasovagal shockDrug has entered the subarachnoid space  <response>: D i.e. Drug has entered the sub arachnoid space 