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US 11,304,658 B2Granted
Method for diagnosing cerebrospinal fluid hypovolemia
AssigneeNational University Corporation Kochi University
InventorsEiichi Nakai, Tetsuya Ueba
Life of this patent
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Abstract
The method for diagnosing cerebrospinal fluid hypovolemia includes injecting saline into a subdural space of a subject in a decubitus position, raising an upper body of the subject, and then determining whether the subject has headache or not, or headache of the subject is relieved or not.
Claims6
A method for diagnosing cerebrospinal fluid hypovolemia, comprising the steps of:
- injecting saline into a subdural space of a subject in a decubitus position, the subject having an orthostatic headache,
- raising an upper body of the subject within 5 minutes after injecting the saline into the subdural space of the subject in the decubitus position, and
- then determining whether the orthostatic headache in the subject has been eliminated or relieved or not,
- wherein the subject is diagnosed as having cerebrospinal fluid hypovolemia in the case where the orthostatic headache is eliminated or relieved, and the subject is diagnosed as not having cerebrospinal fluid hypovolemia in the case where the orthostatic headache is not eliminated or relieved.
1 more element
Dependencies are inferred from the claim text.