In an earlier communication a method was described for obtaining graduated jugular compression in performing the Queckenstedt test for spinal subarachnoid block.1 An ordinary blood pressure cuff was wrapped about the neck, with an attached mercury manometer. This provided accurately measured jugular compression and allowed a graded series of pressures to be used in the test for spinal subarachnoid block. It was pointed out that such a method assisted greatly in standardizing the test so that observations by different workers or by the same worker at different times could be correlated.
During the past three years all tests for spinal subarachnoid block carried out at the Montreal Neurological Institute have been made with this method of producing jugular compression. It has been the opinion of the staff that the results have been much more uniform and that partial blocks have been more accurately determined than by previous procedures.
Grant WT, Cone WV. GRADUATED JUGULAR COMPRESSION WITH MANOMETRIC TRACINGS OF SPINAL FLUID PRESSURE. Arch NeurPsych. 1936;36(6):1317-1322. doi:10.1001/archneurpsyc.1936.02260120164010