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Upper GI Bleeding and Management. 台大醫院小兒肝膽腸胃科 吳嘉峰醫師 2010/07/25. 定義. 上消化道出血 : 於 Treitz 韌帶以上的消化道出血 吐血 Hematemesis : 鮮紅色的血液自口吐出 咖啡色吐出物 Coffee ground emesis : 鮮血經胃酸作用後呈咖啡色吐出物. To be differentiated … . 吐出物是否真的是來自腸胃道出血 ? 紅色食物染色 (Jello,tomatoes,strawberry)? 藥物 (bismuth, iron)? 流鼻血 ?
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Upper GI Bleeding and Management 台大醫院小兒肝膽腸胃科 吳嘉峰醫師 2010/07/25
定義 • 上消化道出血: 於Treitz韌帶以上的消化道出血 • 吐血 Hematemesis: 鮮紅色的血液自口吐出 • 咖啡色吐出物 Coffee ground emesis: 鮮血經胃酸作用後呈咖啡色吐出物
To be differentiated….. • 吐出物是否真的是來自腸胃道出血? • 紅色食物染色 (Jello,tomatoes,strawberry)? • 藥物 (bismuth, iron)? • 流鼻血? • 來自媽媽的血? • 呼吸道出血?
如何處理上消化道出血 • 實驗檢查 • CBC with differential • Reticulocyte count(選擇性) • PT, PTT • Blood type & cross match • Albumin, GOT, GPT, BUN, creatinine • 胃液抽取物 • Gilbert et al. report: bleeding source was identified in 16% of patients with negative gastric aspiration
出血的原因 • 新生兒 吞入母血(APT test) 維生素K缺乏或未施打 壓力性胃炎或潰瘍 凝血功能缺陷 胃酸分泌過多, 藥物 血管異常 牛奶蛋白過敏 病毒感染 Textbook Pediatric Gastrointestinal Disease 4th ed, p259
出血的原因 • 幼兒(小於三個月) • 壓力性潰瘍 • 胃酸分泌過多 • 食道炎 • 血管異常 • 食道靜脈瘤 • 十二指腸/胃結構異常 • 消化道阻塞 Textbook Pediatric Gastrointestinal Disease 4th ed, p259
出血的原因 • 孩童及青少年 • 食道撕裂傷 • 胃酸分泌過多 • 靜脈瘤 • 腐蝕性物質誤食 • 血管炎 (Henoch-Schönlein purpura) • 發炎性腸炎 • 消化道阻塞 • 凝血功能異常 Textbook Pediatric Gastrointestinal Disease 4th ed, p259
血管異常的病兆 • 腫瘤 • 血管瘤 Hemangiomas • 血管內皮瘤 Hemangioendotheliomas • 結構異常 • 微血管性 Capillary • 靜脈性 Venous • 淋巴管性 Lymphatic • 動脈性 Arterial/arteriovenous Textbook Pediatric Gastrointestinal Disease 4th ed, p259
Diagnosis • Radiology Plain X-ray, Barium study, Sonography, CT angiography • Angiography 血流量至少0.5mL/min • Radio-isotope study Technetium-labeled 標記紅血球攝影 • Endoscope Hemoclip, EV Band ligation, ST needle injection (Normal saline, Bosmine, 95% Alcohol, et al)
Management • Medical therapy: Drugs • Balloon tamponade • Endoscopic hemostasis • Angiography: embolization or angiocath with Pitressin infusion • Surgical hemostasis
Medical Therapy • Gastric acid control • Anti-Acid • H2 receptor antagonists • Proton pump inhibitors • Vessel constrictors • Octreotide • Vasopressin • Mucosa protectors • Sucralfate • Misoprostol Textbook Pediatric Gastrointestinal Disease 4th ed, p259
Gastric Acid Control • H2 blockers • Famotidine (Gaster 20mg/tab, 20mg/amp) • 0.5-1 mg/kg/day (max 80mg/day) • Ranitidine (Zantac 150mg/tab, 50mg/amp) • 2-4 mg/kg/day BID po (max 300mg/day); iv q6-8hr (max 50mg q6-8hr) • Proton pump inhibitors • Omeprazole (Losec 40mg/vial) • 1mg/kg/day qd to q12h (adult 40mg/day) • Lansoprazole (Takepron 30mg/cap) • 1-1.2mg/kg/day qd • Esomeprazole (Nexium 40mg/tab) • 1mg/kg/day qd
Vessel Constrictor • Somatostatin (somatosan 3mg/amp) • Prevent postprandial hyperemia or reducing portal pressure by vasoactive peptides • Few side effect: hyperglycemia, abdominal cramping • Stop variceal hemorrhage up to 80% • Adult 250-500mcg/hr for 1-5 days for EV (6-12 Amp in N/S 500cc with 20 cc/hr= 250-500mcg/hr ) • Child 1.5 mcg/kg/hr for 2 days, then up to 3mcg/kg/hr for another 7 days • Octreotide (Sandostatin 0.1mg/amp) • Synthetic analogues of somatostatin • 1-6 mcg/kg/hr (max 50 mcg/hr)
Vessel Constrictor • Vasopressin (Pitressin 20U/1ml/amp) • Reduce splanchnic blood flow & portal pressure • Short half-life (continuous infusion) • Side effect: systemic vasoconstriction (myocardial, mesenteric ischemia/ infarction) • Addition of nitroglycerine to improve efficacy • Initial 0.002-0.005U/kg/min (max 0.01U/kg/min) • Terlipressin (Glypressin 1mg/vial) • Synthetic vasopressin analogue • Fewer side effect & longer half-life • 20-30mcg/kg/dose q6h (adult 1-2 mg q4-6h)
Mucosa Protector • Sucralfate (Sucrate gel 1g/pk) • Aluminum salt of sulfated sucrose forms a paste-like complex adhering to damaged mucosa in the acid PH • Adults 1g qid; child 10-20mg/kg/dose qid, AC • Antacids should not be taken within one-half hour • Misoprostol (Cytotec 200mcg/tab) • Synthetic PGE1 analog (gastric antisecretory agent), reduce acid secretion from parietal cell & stimulation of bicarbonate from gastric & duodenal mucosa • Adults: 200mcg bid / qid (100mcg qid at 8-16y/o)
Balloon Tamponade • Sengstaken-Blakemore tube • 常於停止加壓後復發性出血 • 緊急時使用 • 等待確定治療的橋樑
Endoscopic Hemostasis • Hemoclip: a specific feeding vessel • Banding: Esophageal varix • ST needle injection: epinephrine, normal saline, 95% Alcohol & sclerosants injection • 電燒止血 • Heater probe, monopolar probe, bipolar electocoagulation (BICAP) probe • 雷射止血