Gastrointestinal bleeding: Difference between revisions

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==Background==
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*Loss of blood from the GI tract distal to the ligament of Treitz
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*Upper GI bleeds are most common source for blood detected in the lower GI system
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*80% of lower GI bleeding will resolve spontaneously
{{GI bleeding pages}}
*Cause for bleeding is found in <50% of cases
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==Diagnosis==
== Calculators ==
===History===
{{Glasgow_Blatchford_Calculator}}
*Hematochezia
**Bright red or maroon-colored bleeding that comes from the rectum
**Usually represents lower GI bleeding
**May represent UGIB if bleeding is brisk
***Usually accompanied by hematemesis and hemodynamic instability
*Melena
**Usually represents bleeding from upper GI source
**May represent bleeding from lower GI source due to slow bleeding


 
==References==
==DDX==
<references/>
#Upper GI bleed
#Diverticular disease
#Colitis
##Infectious
##Ischemic (90% of cases occur in age >70yo)
#Adenomatous polyps
#Malignancy
 
 
#Diverticulosis (painless, voluminous)
#Infectious (virus, bacteria, parasites, C. dif)
#Ischemic Colitis 3-12% (acute onset; 90% > 70yo)
#IBD (fistula-in-ano)
#Angiodysplasia
#Cancer/polyps
#Rectal dz
#Hemorrhoids
##External (below pectinate); Internal (above)
#Ulcer (HIV, syphilis, STDs)
#Fissures (painful defecation)
#Abscess, prolapse, proctitis, impaction
 
===Consider===
#Proctoscopy (22cm from anal verge)
#Sigmoidoscopy (60cm from anal verge)
#Angiography (requries arterial bledding >0.5cc/min)
#CT angio
 
==Disposition==
Rockall score
 
===Home (very low risk)===
#No comorbid dz
#Normal vitals
#Norma/trace pos guiac
#Normal/near-normal Hb
#Home support
#F/U within 24hrs
 
===Ward/Stable (low risk)===
#Age <60
#Initial SBP >100
#Normal vitals x 1hr
#No transfusion req
#No major comorbid
#No liver dz
 
===ICU===
#Normal or dec Hct
#Blood in NG doesn't clear
#SBP<100, HR>100
#Gauaic +/- stool
 
==False Positive Guaiac==
#Red fruits and meats
##(Bananas, turnips, broccoli)
#Methylene blue
#Chlorophyll
#Iodide
#Cupric sulfate
#Bromide
#Iron (causes GI bleed by irritation)
 
==Source ==
*Tintinalli


[[Category:GI]]
[[Category:GI]]
[[Category:Symptoms]]
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Latest revision as of 09:29, 22 March 2026


Gastrointestinal Bleeding Pages

Calculators

Glasgow-Blatchford Bleeding Score

Glasgow-Blatchford Bleeding Score (GBS)
Criteria Select
BUN (mg/dL) 1 <18.2 (0)   18.2–22.3 (+2)   22.4–27.9 (+3)   28–69.9 (+4)   ≥70 (+6)
Hemoglobin — Male (g/dL) 1 ≥13 (0)   12–12.9 (+1)   10–11.9 (+3)   <10 (+6)
Hemoglobin — Female (g/dL) 1 ≥12 (0)   10–11.9 (+1)   <10 (+6)
Systolic BP (mmHg) 1 ≥110 (0)   100–109 (+1)   90–99 (+2)   <90 (+3)
Heart rate ≥100 (+1) 1 No   Yes
Melena (+1) 1 No   Yes
Syncope (+2) 1 No   Yes
Hepatic disease (+2) 1 No   Yes
Cardiac failure (+2) 1 No   Yes
GBS Score / 23
Interpretation
0 Very low risk — Can be considered for outpatient management. Virtually 0% chance of needing intervention.
1‒11 Moderate risk — Consider inpatient management and endoscopy.
≥12 High risk — Urgent intervention likely needed.
References
  • Blatchford O, et al. A risk score to predict need for treatment for upper-gastrointestinal haemorrhage. Lancet. 2000;356(9238):1318-1321. PMID 11073021.
  • Stanley AJ, et al. Outpatient management of patients with low-risk upper-gastrointestinal haemorrhage: multicentre validation and prospective evaluation. Lancet. 2009;373(9657):42-47. PMID 19091393.

References