Cases reported "Hypothermia"

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11/24. Triphasic waves in accidental hypothermia.

    Triphasic waves occur in a variety of metabolic, toxic and diffuse encephalopathies. We describe an elderly patient in whom triphasic waves accompanied moderately severe accidental hypothermia and disappeared on rewarming.
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12/24. Osborn wave in hypothermia from vibrio vunificus sepsis unrelated to exposure.

    A 58 year old man with history of cirrhosis presented with vibrio vunificus sepsis. The patient developed multiorgan failure despite appropriate antibiotic therapy and fluid resuscitation. The patient developed moderate hypothermia. electrocardiography showed Osborn wave. Osborn wave is commonly seen in accidental hypothermia. Although sepsis is known to cause hypothermia, Osborn wave in sepsis is not widely appreciated.
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13/24. hypothermia-induced J waves.

    A 36 years old woman with acquired immunodeficiency syndrome was admitted to the hospital for pulmonary mycobacterium Avis Complex infection. Seventy-two hours after the admission she became hypothermic and bradycardic. The ECG showed sinus bradycardia, J waves in leads II, III, aVF, aVR, aVL, V5 and V6 along with QT prolongation and T wave abnormalities. After rewarming the J waves and repolarization abnormalities disappeared. The proposed cellular basis of hypothermia-induced J waves is the accentuation of the spike-and-dome morphology of the action potential of M and epicardial cells.
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14/24. Osborn waves in sepsis.

    A patient with severe sepsis, who presented with moderate hypothermia and the classical electrocardiographic findings that have been described in patients with accidental hypothermia is presented. rewarming was associated with proportional improvement of the initial electrocardiographic abnormalities. A brief discussion is included about the electrophysiologic mechanisms of Osborn waves, the differential diagnosis of this electrocardiographic finding as well as other findings described in patients with hypothermia.
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15/24. atrioventricular block in accidental hypothermia--a case report.

    The finding of second-degree and high-grade atrioventricular block in a patient with severe accidental hypothermia is described. Additional findings included atrial fibrillation, severe sinus bradycardia, and prominent J (Osborn) waves. This case represents, to the authors' knowledge, the first report of advanced spontaneous AV block not induced by atrial pacing in severe accidental hypothermia. Reversal of the block, and other characteristic changes, suggest a relationship to low temperature.
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16/24. Altered norepinephrine metabolism in Shapiro's syndrome.

    We studied a 66-year-old woman with spontaneous periodic hypothermia (Shapiro's syndrome) to determine the mechanisms that result in increased plasma norepinephrine (NE) levels. In comparison with age-matched control subjects, compartmental analysis of NE kinetics revealed an increased NE release rate into the extravascular compartment and decreases in NE clearance and volume of distribution of NE in the intravascular compartment. clonidine therapy was associated with an initial dramatic decrease in the frequency of diaphoretic episodes as well as with a fall in NE release rate and increases in NE clearance and volume of distribution. We conclude that increased NE release and decreased plasma NE clearance result in elevated plasma NE levels in Shapiro's syndrome. clonidine, which was associated with changes in NE kinetics, may provide effective treatment for this disorder.
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17/24. Atypical ventricular tachycardia and alternating Osborn waves induced by spontaneous mild hypothermia.

    A one-month-old infant developed atypical ventricular tachycardia, complete right bundle branch black, and alternating 2:1 Osborn waves during spontaneous mild hypothermia; 10 h after rewarming, the electrocardiogram was normal.
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18/24. The Osborn wave in hypothermia.

    A patient is reported who presented with fatal hypothermia. The electrocardiographic changes of a sinus bradycardia, prolonged QT interval and Osborn waves were documented and correlated with body temperature. The possible genesis of these electrocardiographic changes is reviewed in this article.
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19/24. Electrocardiographic alteration induced by accidental hypothermia.

    Electrocardiographic alterations during hypothermia are studied and a case is reported presenting a very marked J wave which disappeared when the patient recovered his normal temperature.
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20/24. A-V block in accidental hypothermia.

    His bundle electrocardiography was performed on a patient with accidental hypothermia on whom the standard electrocardiogram (ECG) showed absent P waves, prominent J waves and a slightly irregular rhythm. Sino-ventricular conduction and a prolonged AH interval not responsive to atropine were found. These abnormalities reversed with rewarming.
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