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We compared PPC patients with 39 randomly selected controls.During surgery,affected patients spent significantly more time on pump and at temperatures under 36 degrees C,were cooled to lower temperatures than controls,and were more likely to have had a circulatory arrest.One patient developed chorea without a history of circulatory arrest.We conclude that (1)there is a strong association between PPC,deep hypothermia,and circulatory arrest,(2)absence of characteristic macroscopic changes suggests a biochemical or microembolic etiology in some cases,(3)chorea is frequently associated with developmental delay,and(4)the prognosis for complete resolution of chorea is guarded. |
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