Lumbar puncture. Lumbar puncture (LP), also known as a spinal tap, is a medical procedure in which a needle is inserted into the spinal canal, most commonly to collect cerebrospinal fluid (CSF) for diagnostic testing. The main reason for a lumbar puncture is to help diagnose diseases of the central nervous system, including the brain and spine.
2. ratio-the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree; an inordinate proportion of the book is given over to quotations; a dry martini has a large proportion of gin. proportion.
The debt ratio is the debt capital divided by the business' total assets. Current and non-current assets and debt are used to calculate the ratio. The ratio is used to determine how much a company relies on its debt to finance its assets. The lower the debt to asset ratio, the more likely a business is to be granted a loan.