Odom's indicator is a device used for locating the
epidural space
In anatomy, the epidural space is the potential space between the dura mater and vertebrae (spine).
The anatomy term "epidural space" has its origin in the Ancient Greek language; , "on, upon" + dura mater also known as "epidural cavity", "e ...
in regional anaesthesia. The device works on
Dogliotti's principle by finding an area of decreased resistance to injection. It was originally designed on the assumption that the pressure in the epidural space was
negative. This device is no-longer popular and alternative methods (e.g. loss of resistance to saline, loss of resistance to air) are now used.
See also
*
Epidural procedure, which contains additional information on identification of the epidural space
References
Anesthetic equipment
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