Queckenstedt's test

Queckenstedt's test is a diagnostic procedure used in neurology to assess the flow of cerebrospinal fluid (CSF) around the spinal cord. This test is particularly useful in diagnosing spinal blockages, such as those caused by a spinal tumor or herniated disc. The procedure is named after the German neurologist Hans Queckenstedt, who developed the test in the early 20th century.

Procedure[edit | edit source]

The Queckenstedt's test is performed during a lumbar puncture, where a needle is inserted into the lumbar region of the spine to access the spinal canal. Once the needle is in place and CSF is flowing, the examiner manually compresses the jugular veins in the neck for a few seconds. This compression increases the pressure in the chest and abdomen, which should, in turn, increase the pressure of the CSF if the spinal canal is not obstructed. The pressure is measured before, during, and after the compression. An abnormal test result occurs when there is no significant increase in CSF pressure upon compression of the jugular veins, suggesting a blockage in the spinal canal.

Clinical Significance[edit | edit source]

Queckenstedt's test was historically significant in diagnosing spinal pathologies, especially before the advent of more advanced imaging techniques such as MRI (Magnetic Resonance Imaging) and CT scan (Computed Tomography). It helped in identifying the presence and general location of spinal blockages. However, with the development of these imaging techniques, the use of Queckenstedt's test has declined because MRI and CT scans offer a non-invasive, more detailed view of the spinal cord and surrounding tissues.

Limitations[edit | edit source]

While Queckenstedt's test was a valuable diagnostic tool, it had limitations. It could indicate the presence of a blockage but could not provide specific details about the nature or exact location of the obstruction. Additionally, the test carried risks associated with lumbar puncture procedures, such as headache, infection, and bleeding.

Current Relevance[edit | edit source]

Today, Queckenstedt's test is rarely performed due to the preference for imaging studies that are less invasive and provide more detailed information. However, understanding the test and its historical significance is important for medical professionals, particularly those specializing in neurology and neurosurgery.