著者
藤村 欣吾
出版者
一般社団法人 日本内科学会
雑誌
日本内科学会雑誌 (ISSN:00215384)
巻号頁・発行日
vol.98, no.7, pp.1619-1626, 2009 (Released:2012-08-02)
参考文献数
13
被引用文献数
6 3

特発性血小板減少性紫斑病(ITP:idiopathic thrombocytopenic purpura)には急性型と慢性型があり,前者は5歳以下の小児に,後者は中高年齢者に,発症が多い.慢性型の診断には免疫学的特徴と血小板産生動態を反映する検査を取り入れた感度,特異度が高い診断基準が提案されている.治療目標は薬物治療による副作用との兼ね合いから,血小板数を3~5万以上に維持することにおく. 緊急時を除いて,ピロリ陽性症例では除菌療法を行い,除菌効果のない症例やピロリ菌陰性症例に対して副腎皮質ステロイド療法,これに続く摘脾療法を行う.これらに反応しない症例は難治性ITPとして種々の治療法を選択するが,保険適応,効果のエビデンス,副作用などから最終的には副腎皮質ステロイド維持量で経過を観察する症例も多い.
著者
藤村 欣吾 高松 弓子 蔵本 淳
出版者
一般社団法人 日本血液学会
雑誌
臨床血液 (ISSN:04851439)
巻号頁・発行日
vol.27, no.9, pp.1693-1699, 1986 (Released:2009-02-02)
参考文献数
27
被引用文献数
3

Fifty six (56) chronic ITP cases were treated with steroid hormone over one year and the effectiveness of steroid was evaluated. Fourty one cases (66.1%) showed good response (platelet counts≥10×104/μl) to the initial steroid treatment within 15∼80 days (mean 29.4 days) and the platelet counts increased depend on cumulative dose of steroids (prednisolone, β-methasone). The clinical and hematological responsiveness after at least one year of steroid treatment was observed in 9 cases were complete remission (platelets≥10×104/μl) reaching to the drug free, in 18 cases of partial remission (Plts≥10×104/μl), 10 cases of minor response (5×104≤Plts 10×104/μl) and 19 cases of non responder (plts<5×104/μl). The CR and PR groups showed good response to initial therapy and the pretreatment period from the onset was shorter than that of MR or NR. Since there was no remarkable correlation between the clinical response to steroid and the PAIgG level or other various autoantibodies level, the prediction of steroid responsiveness before treatment was difficult by these serological findings. The complications of steroid therapy were found in steroid unresponsive cases who were treated with large amount of steroid for long period.These analysis mentioned that the prednisolone (β-methasone) treatment should be the first choice for the initial treatment of ITP to relieve bleeding tendency and to increase the platelet counts rapidly in above half cases (48%).