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.
Using a spinal block will involve injecting the local anesthetic directly into the subarachnoid space which holds the cerebrospinal fluid. This fluid transports waste and nutrients and acts as a cushion. You can use a small amount of local anesthetic for a spinal block because it spreads easily in the spinal fluid. It is injected using a small needle which is then removed and takes 5 to 20 minutes to complete this process. The epidural begins differently as the patient has to lie down so the area can be cleaned.