Cases reported "Blast Injuries"

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11/13. Acute myocardial infarction caused by blast injury of the chest.

    A 51-year-old healthy man was hit in the chest by the shock-waves generated by an explosion, without being injured by any physical object. He felt immediate chest pain, but, in spite of electrocardiographic tracings highly suspicious for an acute anteroseptal infarction in the emergency room, he was discharged from hospital. The electrocardiogram recorded three weeks later was pathognomonic of anteroseptal infarction. Coronary arteriography performed four months later showed a complete obstruction of the left anterior descending coronary artery, with retrograde filling from the right coronary artery. It is assumed that the myocardial infarction was caused by the blast injury which induced an intimal tear and/or a subintimal haemorrhage in the left anterior descending artery with subsequent thrombosis. The lack of atherosclerosis in any other coronary arteries in this patient is noteworthy.
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keywords = wave
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12/13. Corneal injury from explosion of microwaved eggs.

    PURPOSE: To report two patients with ocular burns from explosion of microwaved eggs that caused direct vision-threatening corneal damage. methods: The initial examination and treatment of both patients are described. RESULTS: Both patients were initially examined with severe decrease in the visual acuity of both eyes. The first patient required limbal conjunctival transplantation and a subsequent penetrating keratoplasty in the right eye and prolonged treatment of superficial keratitis in the left eye. The second patient sustained bilateral corneal epithelial defects and unilateral intrastromal hemorrhage. CONCLUSIONS: Exploding microwaved eggs can cause notable thermal injury to the eyes. The public should be educated about the dangers of cooking eggs in the microwave oven.
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keywords = microwave, wave
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13/13. Successful removal of traumatic tattoos in Asian skin with a Q-switched alexandrite laser.

    BACKGROUND: Traumatic tattoos result from mechanical penetration of the skin by foreign-body particles associated with puncture, abrasive, or explosive trauma. Until the recent development of the Q-switched lasers, it was not possible to remove tattoo pigments without scar and pigmentary changes. OBJECTIVE: The objective of this study was to determine the effectiveness of the Q-switched alexandrite laser (wavelength, 755 nm; pulsewidth, 100 ns), in treating the 27 cases of Asian skin with 36 traumatic tattoos and to observe any side effects such as scarring or pigmentary change. methods: The results of treatments on 16 patients with 19 penetrant tattoos, 10 patients with 16 abrasive tattoos and 1 patient with bomb explosion were clinically analyzed. RESULTS: Greater than 76% removal of tattooed pigments required an average of 1.7 treatment sessions in penetrant tattoos in contrast with 2.4 sessions in abrasive tattoos. The excellent removal of traumatic tattoos required 7.5 J/cm2 except the scarred region of one explosive tattoo and one abrasive tattoo on soil. There were no permanent side effects such as scar or permanent pigmentary changes. CONCLUSION: In conclusion, the Q-switched alexandrite laser is a safe and highly effective modality for removal of various traumatic tattoos without scar or permanent pigmentary change in Asian skin.
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