File:Interstate medical journal (1919) (14577490308).jpg

Identifier: interstatemedica2619unse (find matches)
Title: Interstate medical journal
Year: 1919 (1910s)
Authors:
Subjects: Medicine
Publisher: St. Louis, : Interstate Medical Journal
Contributing Library: The College of Physicians of Philadelphia Historical Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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ight auricle, and occurs in tricuspid lesions, either regurgitantor stenotic. A dilatation of the left side of the heart occurs inmitral lesions or in aortic lesions. Usually in mitral lesions, withloss of compensation, the entire heart is dilated. The first chamberto dilate in mitral lesions, however, is the left auricle. The leftventricle will also be large—first from hypertrophy and, later, afterloss of compensation from dilatation. In aortic lesions, only the leftside of the heart is affected. 170 INTERSTATE MEDICAL JOURNAL Pericardial effusion (Fig. 2) causes an increase in the size of theheart shadow, with an obliteration of the curves identifying thevarious chambers of the heart. The heart shadow becomes roughlytriangular, with the apex above and the base below. The outlinesof the heart shadow approximate straight lines instead of curves.The heart shadow changes shape somewhat on changing the positionof the patient. Alterations in the contour of the heart occur from increased
Text Appearing After Image:
Fig 1. Extreme dilatation of the heart in a child. size of any or all of the chambers of the heart, and have just beenconsidered. The heart may be displaced from various causes.Pleurisy with effusion, old pericarditis with adhesions, old pleurisywith adhesions, fibroid phthisis, tumors in the mediastinum, andsubphrenic abscess are a few of the etiologic factors. By means of the fluoroscope the action of the heart may bewatched, and occasionally information is obtained that might other-wise be overlooked. The rapidity and vigor of the pulsations are,of course, noted. Arhythmia is occasionally seen. I have fluoroscoped one case Grier: X-Ray of Heart and Great Vessels 171 of heart block, and the demonstration was very beautiful. The slow,massive contractions of the left ventricle occurred about twentytimes to the minute, while the contractions of the right auriclewere so rapid as to almost challenge the power of the eyes to followthem. Adhesions of the pericardium to the diaphragm in the

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