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On the basis of our experience early operation is recommended for almost all patients with ascending aortic IMH, and medical therapy for those with descending aortic involvement unless complication developed. However, the presence of intimal disruption may require early surgical treatment even in the patients with descending thoracic IMH.

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A rare case of a 61-year-old man who developed herpes simplex virus (HSV) pneumonia after cardiac surgery is presented. He was immunocompetent before the operation and had no history of a mucocutaneous herpesvirus infection. This potentially fatal complication was successfully managed with acyclovir treatment after establishing the diagnosis with bronchoalveolar lavage. A depression of the patient's cell-mediated immunity after cardiopulmonary bypass may have been a causative factor. An unusual type of pneumonia such the HSV pneumonia seen in the present case should therefore be considered in patients with severe hypoxemia accompanied with unexplained pulmonary infiltrates after cardiac surgery using cardiopulmonary bypass which does not improve with conventional treatment.

Preoperative autologous donation can be performed safely with clinical efficacy, even in children under 20 kg. This can be improved further through coupling with another procedure.