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By non-valvular heart murmurs I mean heart murmurs that are produced without structural change in valves. Such murmurs are common. They often cannot be distinguished from those that are produced by valvular deformities. The physical signs which accompany valvular lesions enable the diagnostician to locate the morbid process and to determine the character of interference with the circulation which it produces, but does not make it possible to decide on the pathological character of the lesion.
I call attention to the following cases to emphasize the fact that not unfrequently the murmur of a nonvalvular lesion is the same in character and location as a valvular one, and that it may be accompanied by the same changes in the size and shape of the heart and other organs.
A man about 45 years old, entered Mercy Hospital suffering with distressing dyspnoea. He coughed little. He was moderately œdematous about his
DAVIS NS. NON-VALVULAR HEART MURMURS. JAMA. 1892;XIX(5):122–124. doi:10.1001/jama.1892.02420050004001a
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