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The patient from whom the accompanying tracings were made was admitted to the Pennsylvania Hospital in March, 1910, suffering with an attack of broken cardiac compensation. He was an Italian laborer, aged 19. A moderate user of alcohol and tobacco, he denied all previous disease except an attack of scarlatina twelve years previously. He presented the usual picture of an individual suffering from dilatation of the heart following disease of the aortic and mitral valves (insufficiency). Further examination disclosed the absence of leukocytosis with a marked diminution of the number of crythrocytes, and some depression of the percentage of hemoglobin, as well as an irregular fever, which sometimes reached 102. Blood-cultures were sterile on a number of occasions. Two months after admission well-marked signs of an acute pericarditis were noted, which gradually disappeared.
I saw the patient for the first time during August, while in charge of Dr. Tyson's
NORRIS GW. SYNCHRONOUS CARDIAC AND RESPIRATORY RATEREPORT OF A CASE. Arch Intern Med (Chic). 1911;VII(5):691–693. doi:10.1001/archinte.1911.00060050113008
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