Southern medicine and surgery [serial] . inconclusive. Case 1: A physician aged 38 consultedme about his heart in May 1924. Abouta month previously he had had an acutearthritis, presumably secondary to a diseased tooth, and during this attackdeveloped tachycardia and having remained in bed a weekand with a regular pulse of 120 perminute, Digifoline tablets of one andone-half grains each were begun. Whenfour tablets had been taken at six-hourintervals the pulse suddenly fell to 40and became irregular. The drug waspromply discontinued and a few hourslater the heart resumed its
Southern medicine and surgery [serial] . inconclusive. Case 1: A physician aged 38 consultedme about his heart in May 1924. Abouta month previously he had had an acutearthritis, presumably secondary to a diseased tooth, and during this attackdeveloped tachycardia and having remained in bed a weekand with a regular pulse of 120 perminute, Digifoline tablets of one andone-half grains each were begun. Whenfour tablets had been taken at six-hourintervals the pulse suddenly fell to 40and became irregular. The drug waspromply discontinued and a few hourslater the heart resumed its rpid ratewith regular rhythm. General examination was was regular, rate 90. Blood pres-sure 112/68. The heart was not en-larged to percussion or by orthodia-gram. A soft apical systolic murmur,which had been discovered severalyears ago, was heard and there was ac-centuation of the pulmonic secondsound. Vital capacity: liters. Elec-trocardiogram showed normal QRScomplexes throughout with a conductiontime of .28 Fig. 1.—Case 1. Prolongation of P-K interval. 478 SOUTHERN MEDICINE AND SURGERY November, 1924. Case 2: A physician aged 40 develop-ed an irregular pulse following an acutepharyngitis and sinusitis. There hadbeen no previous infections except ton-silitis in early life for whch a clean ton-sillectomy was done in 1913. He hadbeen examined on several occasionswithout the detection of any cardiac de-fect, nor had he ever before had an ir-regular pulse. In March 1924 he had asore, red throat showing a hemolyticstreptococcus on culture. This was ac-companied by considerable enlargementof the cervical glands and moderatefever lasting about three days. Tendays after this attack subsided slightfever returned and investigation showedan acute infection of the left maxillaryantrum which was opened and treatedby irrigation. During this treatmenthe happened to feel his pulse and foundit irregular. Examination of the heartshowed no enlargement and no mur-mu
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