For thousands of years, pain relief could be secured only at the expense of central nervous system depression as with the use of mandragora, wine and opium ancient china, mandragora and poppy in ancient Egypt, Rome and Greece ,and atropine, opium, cocaine and hallucinogens by the Incas and ancient Peruvians. Subarachnoid block is defined as the temporary interruption of transmission of nerve impulses produced by the injection of local anaesthetic agents in to subarachnoid space subarachnoid block is one of oldest forms of regional block and is still a very commonly used one in our country. When given to properly selected patients subarachnoid block gives a clear advantage which is difficult to duplicate with general anaesthesia for surgical procedures below the level of the umbilicus. Advantages-Easy, Cheap, Highly reliable, Rapidity of onset, Safe

No abstract