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  • Title: [Congenital antithrombin III deficiency associated with pulmonary thromboembolism].
    Author: Katayama T, Akiba Y, Nishigaki Y, Morimoto H, Yamaguchi S, Fujiuchi S, Yamazaki Y, Nakano H, Ohsaki Y, Kikuchi K.
    Journal: Nihon Kyobu Shikkan Gakkai Zasshi; 1997 Jul; 35(7):790-5. PubMed ID: 9341285.
    Abstract:
    A 42-year-old man was admitted to the hospital because of sudden left-lateral chest pain and dyspnea. The chest roentgenogram on admission showed a string-like shadow and pleural effusion, and analysis of arterial blood gases revealed hypoxemia. Many bilateral segmental defects were seen on a radioisotope perfusion scan of the lungs, and the chest CT scan showed a low-density area in the trunk of the pulmonary artery. From these findings, pulmonary thromboembolism was diagnosed. The serum antithrombin III (ATIII) activity and the antigen value were low, and the patient's son's serum ATIII level was also low. Both the patient and his son were given the diagnosis of congenital ATIII deficiency. Gene analysis revealed two point mutations in exon 6 of the ATIII gene, so we classified this case as type IIc. The patient was treated with intravenous urokinase and heparin, and was then given warfarin. The arterial blood gas tensions improved, and the low-density area of the pulmonary artery on the CT scan disappeared, as did the pulmonary perfusion defect on the radioisotope scan. The clinical manifestations of members of 28 families with congenital ATIII deficiency reported in Japan were reviewed. Patients in whom many point mutations were detected in the ATIII gene were rare.
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