Definition of Foreign Direct Investment Foreign direct investment (FDI) is an investment in a business by an investor from another country for which the foreign investor has control over the company purchased.
Spinal anaesthesia. Spinal anaesthesia (or spinal anesthesia), also called spinal block, subarachnoid block, intradural block and intrathecal block, is a form of regional anaesthesia involving the injection of a local anaesthetic into the subarachnoid space, generally through a fine needle, usually 9 cm (3.5 in) long.
Subarachnoid space. The spinal subarachnoid space is spacious in the lumbar spine, and below the level of L2 it is termed the lumbar cistern. Its CSF content (20-35 mL) is only a fraction of the total CSF volume (120-150 mL).