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To the Editor:
—In The Journal, Jan. 9, 1915, p. 182, was an abstract of an article on the use of the cuff of the sphygmomanometer to cause a venous stasis, in introducing a needle for intravenous injection. I have used this method for a couple of years, and I believe the main part of its usefulness is the fact that by covering the release valve with a sterile towel, the pressure in intravenous injection can be relieved without breaking aseptic technic or requiring the assistance of a second person.Also I find this apparatus to be very efficient in giving Bier's hyperemic treatment, because a definite venous stasis can be regulated by the definite pressure in the arterial supply, thus eliminating the guesswork which is evident with the old tourniquet method for producing hyperemia.
Rang AA. Sphygmomanometer Cuff in Intravenous Injections and Hyperemic Treatment. JAMA. 1915;LXIV(24):2007. doi:10.1001/jama.1915.02570500055033
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