The newer methods of analyzing the venous pulse have enabled us to differentiate clinically a number of forms of cardiac arrhythmia that could not otherwise be properly classified. So far as I am aware, arrhythmias due to a blocking of extrasystoles on their passage from the auricles to the ventricles have not been described. I am able to report such a case here through the kindness of Dr. T. W. Huntington.
—P. C., clergyman, aged 56, entered the Lane Hospital for operation on a left inguinal hernia.
—His family history was excellent and his past history contained little of note. He had been twice poisoned by eating mussels, the last time five years ago, but had never had a severe illness. He habitually drank a cup of coffee in the morning, a cup of tea at noon, and an occasional glass of wine at meals; he did not
HEWLETT AW. THE BLOCKING OF AURICULAR EXTRASYSTOLES.. JAMA. 1907;XLVIII(19):1597–1598. doi:10.1001/jama.1907.25220450041003a
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