Usually rat poisons are fatal n dangerous. Most probably the way u are telling it could be aluminum or zinc phosphide poisoning. Best management can be done only in golden hour of presentation. Management can be suggested according to the complications developed. Rat poisoning best management is usually done much before the development of complications to prevent it. In complicated cases magnesium sulphate for life thretening arrhythmias, digitalization for cardiac failure, vitamin c and methylene blue if associated methemoglobinemias. Intra aortic balloon pump or exchange transfusion are of last options.