臨牀消化器内科 Vol.24 No.12(10)


特集名 機能性消化器疾患へのアプローチ -- 病態理解から的確な診療へ
題名 排便異常と機能検査
発刊年月 2009年 11月
著者 前田 耕太郎 藤田保健衛生大学医学部外科
著者 花井 恒一 藤田保健衛生大学医学部外科
著者 佐藤 美信 藤田保健衛生大学医学部外科
著者 小出 欣和 藤田保健衛生大学医学部外科
著者 松岡 宏 藤田保健衛生大学医学部外科
著者 勝野 秀稔 藤田保健衛生大学医学部外科
【 要旨 】 排便異常はおもに便秘,下痢,便失禁に分類される.便秘は器質性便秘,機能性便秘,原因不明の突発性便秘に分類される.機能性便秘を診断するには,癌などの器質的な疾患を除外しつつ,骨盤底臓器脱などの解剖学的異常による便秘や甲状腺疾患などによる続発性便秘を診断する.その後,機能的な検査を行う.機能的検査には解剖学的検査(排便造影など),腸管の運動機能検査(X線不透過マーカー),直腸肛門機能検査(直腸肛門内圧検査など)があり,これらを総合的に評価して診断する.肛門失禁(便失禁とガス失禁を含む)では,おもに肛門括約筋や周囲筋肉,これらの支配神経の損傷などを機能的検査で診断する.
Theme The Functional Gastrointestinal Disorders -- Clinical Practice Based on the Understanding of Its Basic Mechanisms
Title Examinations of Defecatory Disorders
Author Kotaro Maeda Department of Surgery, Fujita Health University School of Medicine
Author Tsunekazu Hanai Department of Surgery, Fujita Health University School of Medicine
Author Harunobu Sato Department of Surgery, Fujita Health University School of Medicine
Author Yoshikazu Koide Department of Surgery, Fujita Health University School of Medicine
Author Hiroshi Matsuoka Department of Surgery, Fujita Health University School of Medicine
Author Hidetoshi Katsuno Department of Surgery, Fujita Health University School of Medicine
[ Summary ] Defecation disorders include constipation, diarrhea and anal incontinence (gas and fecal incontinence). Constipation is classified into the categories of mechanical, functional and idiopathic conditions. The exclusion of mechanical bowel disorders must be initially considered when diagnosing constipation. Secondary constipation due to hypothyroidism and pelvic organ prolapse may be evaluated through physical examination and inspection, followed by functional examination. Anal incontinence primarialy occurs due to damage to the anorectal muscles and associated nerves. The grade of anal incontinence should be initially evaluated be by confirming the frequency of incontinence related gas, fluid stools or hard stools, as well as the need to wear a pad or the restriction of social activity. Functional examination, including anorectal manometry should be done at a later time. Pelvic organ prolapse and anal diseases such as hemorrhoids can induce anal incontinence, therefore anatomical examination through defecography is also mandatory to evaluate anal incontinence. The most important factor to diagnose defecation disorders is to fully evaluate all these findings.
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