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AMA Arch Intern Med. 1951;88(2):252-257. doi:10.1001/archinte.1951.03810080120012.
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AGREAT variety of cardiac lesions is known to occur following nonpenetrating injury to the chest.1 While pain in the chest is perhaps the commonest manifestation of such injury, disturbances of heart rhythm are frequently encountered. Among these, auricular fibrillation is second in incidence only to sinus tachycardia and is considered the most prevalent important arrhythmia following nonpenetrating trauma to the chest.1a, b Auricular flutter, by contrast, is a distinctly rare finding after indirect cardiac trauma. A search of the literature reveals only five such cases. In two of these2 the auricular flutter occurred years after the episode of trauma, and its relation to the injury is not established. In only one case3 was the flutter discovered immediately after the injury, but in this instance shock was also present. In the two other cases4 the flutter appeared 10 days and three weeks after the injury. In


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