<prompt> Mechanism of action of sodium nitroprusside in cyanide poisoning -Produces methemoglobinemiaIncreased blood flow to liverIncreased blood flow to heaIncreased blood flow to kidney  <response>: Ans. is a i.e., Produces methemoglobinemia o Nitrates generate methaemoglobin which has high affinity for cyanide and forms cyanomethaemoglobin.o Cynomethaemoglobin may again dissociate to release cyanide, therefore, sodium thiosulfate is given to form sod. 