GASTROINTESTINAL BLEEDING
Hematemesis
Melena
Hematochezia
Occult bleeding

CLINICAL PRESENTATION
Clinical manifestations of GI bleeding depends upon extent & rate
Postural hypotension suggests acute hemorrhage & intravascular volume depletion
Fatigue & exertional dyspnea typical symptoms  with slow, chronic blood loss

ETIOLOGY OF UGI BLEEDING
Differential diagnosis is extensive
Major causes;
PUD
Esophageal/Gastric Varices
Esophagitis
Mallory-Weiss tear

ETIOLOGY OF LOWER BLEED
Anal and rectal lesions
Colonic lesions
Diverticula

HISTORY
Consider factors that may cause false + FOBT
Postural hypotension helps determine need for hospitalization
H/O PUD, recent use of NSAIDs
Weight loss & change in bowel habits
H/O liver disease, ETOH abuse, inflammatory bowel disease

PHYSICAL
Orthostatic changes in pulse & BP
Cardiopulmonary
Skin
Examine oral cavity & nasopharynx
Lymph nodes
Abdomen
Digital rectal

DIAGNOSTIC TESTS
CBC
PT, PTT
Other lab tests relevant to physical findings
Upper endoscopy if stable
Colonoscopy

INDICATIONS FOR ADMISSION & REFERRAL
Admit pts with h/o recent brisk bleeding & orthostatic changes
Admit pts with less sever blood loss who have comorbid conditions aggravated by anemia
Profound anemia with no evidence of blood loss
Refer pts who are candidate for endoscopy or colonscopy when source of bleeding is elusive