GASTROINTESTINAL BLEEDING. Zdeněk Fryšák 3rd Clinic of Internal Medicine Nephrology-Rheumatology-Endocrinology Faculty Hospital Olomouc
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1 GASTROINTESTINAL BLEEDING Zdeněk Fryšák 3rd Clinic of Internal Medicine Nephrology-Rheumatology-Endocrinology Faculty Hospital Olomouc
2 Gastrointestinal Bleeding Hematemesis- Vomiting of bright red blood usually represents bleeding proximal to the ligament of Treitz Hematochezia- bright red blood per rectum indicates a lower GI source of bleeding Blood has a laxative effect so with massive bleeding the stool may be bright red
3 Gastrointestinal Bleeding Blood streaks on the stool indicates anal outlet bleeding Blood mixed with stool indicates bleeding source higher than the rectum Blood with mucus indicates an infectious or inflammatory disease Currant jelly-like material indicates vascular congestion and hyperemia (intussusception or midgut volvulus)
4 Gastrointestinal Bleeding Maroon-colored stools indicate voluminous bleeding proximal to the rectosigmoid area Melena, passage of black, sticky (tarry) stools suggests upper GI tract bleeding, but can be as distal as the right colon Hematemesis suggests a large bleed with possible recurrence, melena alone indicates less voluminous bleeding
5 Causes of Upper GI Bleeding Common Nasopharyngeal bleeding Erosive Esophagitis Peptic ulcer Gastritis (H. pylori) Mallory-Weiss tear Prolapse gastropathy Less Common Bleeding disorders Duplication cyst Foreign body Tube trauma Vascular malformation Esophageal varices
6 Causes of Lower GI Bleeding Common Anal fissure Infectious colitis Salmonella, Shigella, Campylobacter, C.diff Inflammatory bowel disease Intussusception Upper GI source Less Common Meckel s diverticulum Duplication cyst Hirschsprung s enterocolitis Gangrenous intestine Vascular malformation
7 Clinical Findings in Neonatal Period Gastric ulcers are more common than duodenal ulcers in neonates Spontaneous Perforation is a more common presentation than bleeding Frequently associated with: Hypoxia, Sepsis, RDS, CNS disorder
8 Clinical Findings in PUD Infants and Toddlers Presenting symptoms: Vomiting Poor feeding Irritability during and after eating Abdominal distention Hematemesis, melena Commonly associated with underlying disease in this age group
9 Clinical Findings in PUD Pre-Schoolers Periumbilical or generalized abdominal pain Vomiting after eating Nocturnal or early morning pain Gastric ulcers are as common as duodenal ulcers Primary ulcers are as common as secondary ulcers
10 Clinical Findings in School Age Male: Female ratio is 3:1 Burning epigastric pain Nocturnal pain Melena, hematemesis, fecal occult blood Primary ulcers are more common than secondary ulcers
11 Pathophysiology of GI Bleeding Mucosal lesions Acid-peptic disease, drug-induced (NSAIDs), Infectious (H. pylori), inflammatory bowel dz Portal hypertension Esophageal varices, hypertensive gastropathy Coagulopathy - Hemophilia, hepatic coagulopathy, CHF w/hepatic congestion Vascular lesions - hemangiomas
12 Causes and Effects of H + Ion Backdiffusion Lowflow states Drugs, EtOH Stress H. pylori Bile Reflux Mucosal Barrier Break H + Parietal Cells Release of histamine + Vasodilatation Increased HCl and Pepsin Secretion
13 Peptic Ulcer Disease Diagnostic Evaluation History (medications, family history) Physical exam (include Hemoccult) CBC, type & screen for GI bleeding PT, PTT H. pylori antibody, fasting gastrin level Upper GI Series EGD
14 Indications for EGD Hematemesis, Melena, Heme (+) stool Severe pain, weight loss Unexplained anemia Symptoms persist despite trial of antisecretory therapy Evaluation of abnormal UGI series Evaluation of status of H. pylori
15 Case #1 UGI Bleeding 12 YOWF with S/P splenectomy 2 yr ago for Evan s syndrome Weakness, pallor, melana x 2 days Exam HR- 128, BP-86/54, tachycardic, pale, abdomen nontender, nondistended, no hepatomegaly Lab H/H=6.8/19.1, WBC, 5.7; platelets, 115,000, PT=13.2 sec; AST, 38; ALT, 45; T.bili, 0.5; alk phos, 227
16 Esophageal varices
17 Case #2 UGI Bleeding 11 YOWM previously healthy with 1 day h/o fever, vomiting and diarrhea Emesis x 6 over past 24 hr, w/blood last 2 times Exam HR- 84, BP-116/74, abdomen nontender, nondistended, no hepatomegaly Lab H/H=13.8/39.1, WBC, 8.7; platelets, 235,000, PT=12.2 sec
18 Prolapse Gastropathy
19 Meckel s Scan 99m Tc-Pertechnetate Scan - injected IV and accumulates in gastric tissue - RLQ uptake is diagnostic of Meckel s diverticulum False (+) - bleeding lesions such as Crohn s disease, intussusception, hemangioma, PUD False (-) - Barium, bladder overdistention, no gastric mucosa in diverticulum
20 99m Tc- Labeled Red Cell Scan 99m Tc-sulfur colloid is added to a sample of the patient s blood cells and re-infused IVpatient is scanned with gamma camera Half-life is short (2.5 min) so that after 10 minutes only 10% is left in the circulation 99m Tc accumulates at the bleeding site and lights up on scan - can detect 0.1 ml/min
21 GI Bleeding - Treatment ABCs - protect airway with hematemesis in an obtunded patient IV access - two lines (0.9% NS in one line, PRBC s not compatible with dextrose) Transfuse for Hgb < 8 w/active bleeding NG lavage Antacids (1 ml/kg up to 30 ml q 2 hr) PPI 2 mg/kg loading dose, then 1 mg/kg/day IV
22 Drug Efficacy in Healing Ulcers Drug Regimen Ulcers Healed H2RA 4 weeks 8 weeks Cimetidine 40 mg/k/d 80% 90% Ranitidine 4-8 mg/k/d Famotidine 1-2 mg/k/d PPIs Omeprazole mg/k/d 85% 95% Lansoprazole mg/k/d Sucralfate mg/k/d 75% 86%
23 ATLS Classification of Shock Class Blood Loss BP HR Cap refill 1 <15% WNL Up to 10-20% % % % WNL Neuro WNL Decreased >150 > 3 sec Alert Decreased >150 > 3 sec Lethargic Not palpable >150 > 3 sec Obtunded
24 Management Class 1, no anemia, no active bleeding on lavage, may be followed up as outpatient Class 2, mild anemia, active bleeding may be monitored on wards Class 3 or 4 admit to PICU, central line, arterial line IVF boluses, transfusion as needed
25 Management Iced saline? - with cooling, bleeding time increases to 3 x control, clotting time increases up to 60%, and PT can increase to 2 x control, and can cause hypothermia NG tube is useful to monitor bleeding, but not in treatment Therapeutic endoscopy (sclerotherapy) useful in variceal hemorrhage
26 Management - Octreotide Somatostatin analog - octreotide has a longer halflife than somatostatin Decreases splanchnic blood flow and gastrointestinal secretion Make a 1 g/ml drip - begin drip at a rate of 0.1 g/kg/min - increase to 0.5 g/kg/min until bleeding stops, then wean rate Side effects - nausea, gas, hyperglycemia, gallstones, elevated liver enzymes
27 GI Bleeding Summary Remember your abc s IV access if bleeding is significant Plan diagnostic work-up based on presentation Consider non-gi causes of blood in the GI tract (e.g., swallowed blood)
28 Question #1 An 18-month-old boy passed a dark red stool four hours ago and another bloody stool during physical examination. He has no fever, vomiting, diarrhea, or constipation. His growth and development have been normal. On physical examination, his pulse is 140/min, respiratory rate 24/min, and blood pressure is 86/54 mmhg. The abdomen is soft and nontender. Rectal examination reveals maroon-colored stool that is guaiac positive. The remainder of the physical examination is normal. Gastric aspirate is negative for blood. Laboratory evaluation reveals hemoglobin 8 g/dl, hematocrit 26%. Prothrombin time, partial thromboplastin time, and INR were normal. After intravenous fluid administration and erythrocyte transfusion, which of the following is most likely to be diagnostic? A. Barium enema B. Meckel radionuclide scan C. Computerized tomography (CT scan) of the abdomen D. Upper gastrointestinal series with small bowel follow through E. Abdominal angiography
29 Question #2 A 6-week-old infant has done well since birth until blood and mucus appeared in the stool for the past 3 days. He is taking his usual four ounces of cow-milk formula per feeding without vomiting. He is more irritable during defecation. Physical examination reveals that the abdomen is soft and not distended. The hemoglobin is 10 g/dl. Which of the following is the most likely explanation for the findings in this infant? A. Hirschsprung disease B. Meckel diverticulum C. Anal fissure D. Cow-milk protein colitis E. Midgut volvulus
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