嘔血與便血ppt課件-資料下載頁
2024-12-08 03:43本頁面
【正文】 mittent blood in the stools altered bowel habits often suggests colorectal malignancy Ⅳ Diagnostic approach to GI bleeding Hemorrhoidal bleeding is often suggested by the presence of bright red blood surrounding wellformed, normalappearing stools Ⅴ Diagnostic approach to GI bleeding A rectal examination is essential to document stool color as well as to palpate for gross anorectal (肛直腸 ) mass lesions such as polyps(息肉 ), cancers, or large hemorrhoids. Diagnostic approach to GI bleeding Auxiliary examination Endoscopy (內(nèi)鏡 ) Endoscopy is the diagnostic procedure of choice because of its high accuracy and immediate therapeutic potential. Endoscopy , however , must be performed only following adequate resuscitation (復(fù)蘇 ) Diagnostic approach to GI bleeding Barium radiography (鋇餐 ) Barium radiography is noninvasive but has significant disadvantages, particularly in patients who are bleeding actively Diagnostic approach to GI bleeding Angiography (血管造影 ) Angiography may localize the site of bleeding Bleeding must be active because angiography detects only extravasation (外滲 ) of contrast (造影劑 ) into the GI tract Is bleeding acute or chronic? Intensive care Where is the source of bleeding? Empiric therapy Diagnosis Treatment ( 經(jīng)驗治療 ) What is the causes of bleeding? Recognition of hemorrhage Diagnostic approach Questions 1. 名詞解釋 : 嘔血 便血 隱血便 2. 嘔血最常見原因有哪些 ?(至少 4種 )
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