epidural block
(EH-pih-DER-ul blok)
An injection of an anesthetic drug into the space between the wall of the spinal canal and the covering of the spinal cord.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at opm.gov.