Osborn wave
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2008-06-23T14:16:26Z
Arcadian
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'''Osborn waves''' (also known as '''camel-hump sign''', '''late delta wave''', '''hathook junction''', '''hypothermic wave''', '''J point wave''', '''K wave''', '''H wave''' or '''current of injury''') are usually observed on the [[electrocardiogram]] of people suffering from [[hypothermia]], though they may also occur in people with high blood levels of [[calcium]] ([[hypercalcemia]]), [[brain]] injury, [[Vasospasm|vasospastic]] [[Angina pectoris|angina]], or [[ventricular fibrillation]]. Osborn waves are positive deflections occurring at the junction between the [[QRS complex]] and the ST segment, where the S point, also known as the J joint, has a [[myocardial infarction]]-like elevation. These waves were definitively described in 1955 by JJ Osborn and were named in his honor.
==References==
*Osborn JJ. ''Experimental hypothermia: Respiratory and blood pH changes in relation to cardiac function.'' Am J Physiol 1953; 175: 389-398.
*Maruyama, Mitsunori and Kobayashi, Yoshinori and Kodani, Eitaroh and Hirayama, Yoshiyuki and Atarashi, Hirotsugu and Katoh, Takao and Takano, Teruo. ''Osborn Waves: History and Significance.'' Indian Pacing and Electrophysiology Journal 4(1):pp. 33-39.
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{{Eponymous medical signs for circulatory and respiratory systems}}
[[Category:Cardiology]]
[[it:Onda J di Osborne]]