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To the Editor:—
I read with interest the article by Drs. John Merendino and Frank Finnerty, entitled "Importance of the Position of the Arm on the Level of Arterial Blood Pressure," in The Journal, Jan. 7, page 51. I assume that the same arm was used in the study, although it is not stated in the article, and the illustration indicates that the left arm was used in one position and the right arm in the other. Perhaps the authors could clarify this for your readers.The observed difference in the blood pressure in the two positions has been known for some time, and it was for this reason that the arm was held at the level of the heart when determining the blood pressure in the standing position as compared to the lying position (Amer Heart J35:646-654 [April] 1948). The authors give no reason for the higher
Currens JH. Position of the Arm. JAMA. 1961;176(2):169. doi:10.1001/jama.1961.03040150085031