title: [A case of acquired von Willebrand disease due to pulmonary stenosis after Jatene's operation].
abstract: The case of a 9-year-old girl with pulmonary stenosis complicated by acquired bleeding tendency after Jatene's operation is reported. Coagulation study revealed that platelet count and von Willebrand factor were reduced. Catheterization study revealed severe pulmonary stenosis, the pressure gradient between the right ventricle (RV) and pulmonary artery (PA) being 190 mmHg. A link between pulmonary stenosis and bleeding tendency was suggested and the patient was diagnosed as having acquired von Willebrand disease due to activated platelet/von Willebrand factor interactions enhanced by "shear stress" at the site of pulmonary stenosis. Right ventricular outflow reconstruction was done when she was 9 years-old. Due to a protocol based on the results of the challenge test that we instituted to determine the efficacy and effective duration of blood derivatives and hemostatic agents, perioperative massive bleeding was avoided. Bleeding tendency disappeared and coagulation study findings normalized with correction of the abnormal hemodynamic state.
authors.affiliation: Department of Surgery, School of Medicine Keio University, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Shimizu
authors.forename: T
authors.initials: T
authors.lastname: Katogi
authors.forename: Y
authors.initials: Y
authors.lastname: Kato
authors.forename: Y
authors.initials: Y
authors.lastname: Katada
authors.forename: S
authors.initials: S
authors.lastname: Takeuchi
authors.forename: S
authors.initials: S
authors.lastname: Kawada
mesh_terms: D002648:Child; D004374:Ductus Arteriosus, Patent / Q000601:surgery; D005260:Female; D006801:Humans; D008722:Methods; D010976:Platelet Count; D011183:Postoperative Complications; D011666:Pulmonary Valve Stenosis / Q000150:complications* / Q000209:etiology*; D014188:Transposition of Great Vessels / Q000601:surgery; D014842:von Willebrand Diseases / Q000209:etiology*; D014841:von Willebrand Factor / Q000032:analysis
chemical_list: D014841:von Willebrand Factor