Cardiopulmonary bypass surgery in infants can be complicated by choreoathetotic dyskinesia of unexplained etiology, which may persist long-term in some cases.
Choreoathetotic dyskinesia may complicate infant cardiopulmonary bypass; this case report leaves open its incidence, etiology, and prevention.
Four infants developed dyskinesia after cardiopulmonary bypass surgery three to four days postoperatively. The dyskinesia was choreoathetotic, and involved mainly the mouth, tongue and face. It was absent during sleep. Three of these infants improved over periods of several weeks, but one infant remained dyskinetic one year postoperatively. Neuro-imaging studies and EEGs were of little value in determining the cause of the dyskinesia. The factors responsible for the involuntary movements and for their severity remain unexplained.
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Huntley et al. (1993) studied this question.
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