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==Background==
<languages/>
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{{Adult top}}
<translate> <!--T:1-->
[[Special:MyLanguage/acute gastroenteritis (peds)|acute gastroenteritis (peds)]].''
 
==Background== <!--T:2-->
 
<!--T:3-->
*Blood diarrhea suggests bacterial etiology
*Blood diarrhea suggests bacterial etiology
*Viral AGE usually lasts <7d
*Viral AGE usually lasts <7d
*Do not dx isolated vomiting as AGE
*Do not diagnose isolated vomiting as AGE
 
 
===Causes=== <!--T:4-->


===Causes===
<!--T:5-->
*Viral
{| class="wikitable"
*Non-Invasive
|+ Noninvasive AGE
*Invasive
|-
! Species!! Onset !! Symptoms !! Transmission !! Preformed Toxin
|-
| [[Special:MyLanguage/viruses|Viral]] ([[Special:MyLanguage/norovirus|norovirus]], [[Special:MyLanguage/adenovirus|adenovirus]], [[Special:MyLanguage/rotavirus|rotavirus]])
|| 11-72 hrs
||
*Nausea, vomiting, watery diarrhea
*Mild abdominal cramps, myalgia
||
*Fecal-oral
*Contaminated food or water
|| No
|-
| [[Special:MyLanguage/S. aureus|Staph]]
|| 1-6 hrs
||
*Nausea, severe vomiting, diarrhea,
*Mild abdominal cramping
||
*Previously cooked foods (mayonaise, ham, salads)
|| Yes
|-
| [[Special:MyLanguage/Bacillus cereus|B. cereus]]
|| 1-6 hrs
||
*Abrupt onset of nausea, vomiting, mild diarrhea
||
*Previously cooked foods (rice, vegetables, dried fruits, meat)
|| Yes
|-
| [[Special:MyLanguage/Clostridium (not difficile)|C. perfringens]]
|| 8-24 hrs
||
*Nausea, minimal vomiting, watery diarrhea
*Abd cramps
||
*Previously cooked or reheated meats and poultry
|| Yes
|-
| [[Special:MyLanguage/Vibrio cholera|V. cholerae]]|| 11-72 hrs ||
*Explosive rice-water diarrhea
*Vomiting, abdominal cramps
*Fever
||
*Fecal-oral
*Contaminated food or water
|| Yes
|-
| [[Special:MyLanguage/Giardia|Giardia]]
|| 1-4 wks
||
*Flatus, bloating
*Foul-smelling and fatty stools (steatorrhea)
||
*Fecal-oral
*Contaminated water
|| No
|}


<!--T:6-->
{| class="wikitable sortable"
{| class="wikitable sortable"
|+ Invasive AGE
|+ Invasive AGE
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! scope="col" | '''Transmission'''
! scope="col" | '''Transmission'''
|-
|-
| [[Salmonella]]||6-72 hours||
| [[Special:MyLanguage/Salmonella|Salmonella]]||6-72 hours||
*[[Fever]]
*[[Special:MyLanguage/Fever|Fever]], relative bradycardia
*[[Abdominal pain]]
*[[Special:MyLanguage/Abdominal pain|Abdominal pain]]
*[[Headache]]
*Bloody diarrhea
*[[Special:MyLanguage/Headache|Headache]]
*Osteomyelitis in sickle cell
||
||
*Eggs
*Eggs
Línea 27: Línea 99:
*Reptiles
*Reptiles
|-
|-
| [[Shigella]]||1-3 days||
| [[Special:MyLanguage/Shigella|Shigella]]||1-3 days||
*[[Fever]]
*[[Special:MyLanguage/Fever|Fever]]
*[[Abdominal pain]]
*[[Special:MyLanguage/Abdominal pain|Abdominal pain]]
*[[Headache]]
*Bloody diarrhea
*[[Special:MyLanguage/Headache|Headache]]
*1-5 years old
*1-5 years old
*Seizures in children
||
||
*Food
*Food
*Fecal-Oral
*Fecal-Oral
|-
|-
| [[Yersinia]]||1-5 days||
| [[Special:MyLanguage/Yersinia|Yersinia]]||1-5 days||
*[[Appendicitis]] mimic, [[RLQ Pain]]
*[[Special:MyLanguage/Appendicitis|Appendicitis]] mimic, [[Special:MyLanguage/RLQ pain|RLQ pain]]
*[[Fever]]
*[[Special:MyLanguage/Fever|Fever]]
*[[Vomiting]]
*[[Special:MyLanguage/Vomiting|Vomiting]]
*Kids and Young Adults
*Kids and Young Adults
||
||
Línea 48: Línea 122:
*Fecal-Oral
*Fecal-Oral
|-
|-
| [[Campylobacter]]||1-7 days||
| [[Special:MyLanguage/Campylobacter|Campylobacter]]||1-7 days||
*Low grade [[fever]]
*Low grade [[Special:MyLanguage/fever|fever]]
*[[Abdominal pain]]
*[[Special:MyLanguage/Abdominal pain|Abdominal pain]]
*Kids and Young Adults
*Kids and Young Adults
*Guillain-Barre
||
||
*Water
*Water
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*Pets/Animals
*Pets/Animals
|-
|-
| [[C. Dif]]||1-11 Weeks||
| [[Special:MyLanguage/C. Diff|C. Diff]]||1-11 Weeks||
*Copious FOUL diarrhea
*Copious FOUL diarrhea
||
||
*Antibiotic use: [[PCN]], [[Clinda]], [[Cephalosporins]]
*Antibiotic use: [[Special:MyLanguage/PCN|PCN]], [[Special:MyLanguage/Clinda|Clinda]], [[Special:MyLanguage/Cephalosporins|Cephalosporins]]
|-
|-
| [[Entamoeba]]||1-11 weeks||
| [[Special:MyLanguage/Entamoeba|Entamoeba]]||1-11 weeks||
*[[Appendicitis]] Mimic
*[[Special:MyLanguage/Appendicitis|Appendicitis]] Mimic
*[[Abdominal pain]], [[nausea/vomiting]], [[diarrhea]]
*[[Special:MyLanguage/Abdominal pain|Abdominal pain]], [[Special:MyLanguage/nausea/vomiting|nausea/vomiting]], [[Special:MyLanguage/diarrhea|diarrhea]]
||
||
*Water
*Water
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|}
|}


==Clinical Features==
*[[Vomiting/diarrhea]]
*Crampy/diffuse [[abdominal pain]]


==Differential Diagnosis==
==Clinical Features== <!--T:7-->
 
<!--T:8-->
*[[Special:MyLanguage/Vomiting|Vomiting]]/[[Special:MyLanguage/diarrhea|diarrhea]]
*Crampy/diffuse [[Special:MyLanguage/abdominal pain|abdominal pain]]
 
 
==Differential Diagnosis== <!--T:9-->
 
</translate>
{{Nausea and vomiting DDX}}
<translate>
</translate>
{{Abdominal Pain DDX Diffuse}}
{{Abdominal Pain DDX Diffuse}}
<translate>
==Evaluation== <!--T:10-->


==Diagnosis==
<!--T:11-->
*Assess hydration status
*Assess hydration status
**Cap refill, skin turgor, resp rate
**Cap refill, skin turgor, respiratory rate
*Consider stool labs if:
*Consider stool labs if:
**>10 stools in previous 24hr
**>10 stools in previous 24hr
**[[Traveler's diarrhea|Travel to high-risk country]]
**[[Special:MyLanguage/Traveler's diarrhea|Travel to high-risk country]]
**Fever
**Fever
**Bloody stool
**Bloody stool
**Persistent diarrhea
**Persistent diarrhea
**HIV / immunosuppressed
==Management== <!--T:12-->


==Treatment==
<!--T:13-->
#Oral rehydration therapy
#Rehydration (PO preferred)
#*30mL(1oz)/kg/hr
#*30mL(1oz)/kg/hr
#Antiemetic
#Antiemetic
#*[[Ondansetron]] 0.15mg/kg/dose IV/PO
#*[[Special:MyLanguage/Ondansetron|Ondansetron]] 0.15mg/kg/dose IV/PO
#[[Antibiotics]]
 
#*Only consider in pts w/ invasive infection
 
#**[[Shigella]], [[campylobacter]], [[E. coli]], [[yersinia]], [[vibrio]]
===[[Special:MyLanguage/Antibiotics|Antibiotics]]=== <!--T:14-->
#**Bloody stool with mucus and fever
 
#*NOT indicated for E. coli O157:H7
<!--T:15-->
#*NOT routinely indicated for salmonella
*''Only consider in patients with invasive infection''
#**Exceptions: SCD, [[IBD]], <3mo
**[[Special:MyLanguage/Shigella|Shigella]], [[Special:MyLanguage/campylobacter|campylobacter]], [[Special:MyLanguage/E. coli|E. coli]], [[Special:MyLanguage/yersinia|yersinia]], [[Special:MyLanguage/vibrio|vibrio]]
#*[[Azithromycin]] (able to tolerate PO)
**Bloody stool with mucus and fever
##[[Ceftriaxone]] (parenteral)
*NOT indicated for [[Special:MyLanguage/E. coli|E. coli]] O157:H7
*NOT routinely indicated for salmonella
**Exceptions: SCD, [[Special:MyLanguage/IBD|IBD]], <3mo
*[[Special:MyLanguage/Azithromycin|Azithromycin]] (able to tolerate PO)
*'''OR''' [[Special:MyLanguage/ciprofloxacin|ciprofloxacin]]
*'''OR''' [[Special:MyLanguage/TMP-SMX|TMP-SMX]]
*[[Special:MyLanguage/Ceftriaxone|Ceftriaxone]] (parenteral)
 
 
==Disposition== <!--T:16-->
 
<!--T:17-->
*Most can be discharged
 
 
===Admit=== <!--T:18-->
 
<!--T:19-->
*Unable to tolerate PO
*Hemodynamic instability
*Significant comorbidities
 
 
==See Also== <!--T:20-->
 
<!--T:21-->
*[[Special:MyLanguage/Nausea and vomiting|Nausea and vomiting]]
*[[Special:MyLanguage/Acute gastroenteritis (peds)|Acute gastroenteritis (peds)]]
*[[Special:MyLanguage/Dehydration|Dehydration]]
*[[Special:MyLanguage/Acute diarrhea|Acute diarrhea]]


==Disposition==


==See Also==
==References== <!--T:22-->
*[[Nausea and Vomiting]]
*[[Diarrhea (Peds)]]
*[[Dehydration]]


==References==
<!--T:23-->
<references/>


<!--T:24-->
[[Category:GI]]
[[Category:GI]]
[[Category:Peds]]
</translate>

Revisión actual - 16:59 6 ene 2026

Otros idiomas:

This page is for adult patients. For pediatric patients, see: 

acute gastroenteritis (peds).

Background

  • Blood diarrhea suggests bacterial etiology
  • Viral AGE usually lasts <7d
  • Do not diagnose isolated vomiting as AGE


Causes

Noninvasive AGE
Species Onset Symptoms Transmission Preformed Toxin
Viral (norovirus, adenovirus, rotavirus) 11-72 hrs
  • Nausea, vomiting, watery diarrhea
  • Mild abdominal cramps, myalgia
  • Fecal-oral
  • Contaminated food or water
 No
Staph 1-6 hrs
  • Nausea, severe vomiting, diarrhea,
  • Mild abdominal cramping
  • Previously cooked foods (mayonaise, ham, salads)
 Yes
B. cereus 1-6 hrs
  • Abrupt onset of nausea, vomiting, mild diarrhea
  • Previously cooked foods (rice, vegetables, dried fruits, meat)
 Yes
C. perfringens 8-24 hrs
  • Nausea, minimal vomiting, watery diarrhea
  • Abd cramps
  • Previously cooked or reheated meats and poultry
 Yes
V. cholerae 11-72 hrs
  • Explosive rice-water diarrhea
  • Vomiting, abdominal cramps
  • Fever
  • Fecal-oral
  • Contaminated food or water
 Yes
Giardia 1-4 wks
  • Flatus, bloating
  • Foul-smelling and fatty stools (steatorrhea)
  • Fecal-oral
  • Contaminated water
 No
Invasive AGE
Species Onset Symptoms Transmission
Salmonella 6-72 hours
  • Eggs
  • Poultry
  • Water
  • Reptiles
Shigella 1-3 days
  • Food
  • Fecal-Oral
Yersinia 1-5 days
  • Water
  • Milk
  • Pork
  • Wild Animals
  • Fecal-Oral
Campylobacter 1-7 days
  • Water
  • Poultry
  • Pets/Animals
C. Diff 1-11 Weeks
  • Copious FOUL diarrhea
Entamoeba 1-11 weeks
  • Water
  • Sanitation
  • Travel


Clinical Features


Differential Diagnosis

Nausea and vomiting

Critical

Emergent

Nonemergent

Diffuse Abdominal pain


Evaluation

  • Assess hydration status
    • Cap refill, skin turgor, respiratory rate
  • Consider stool labs if:


Management

  1. Rehydration (PO preferred)
    • 30mL(1oz)/kg/hr
  2. Antiemetic


Antibiotics


Disposition

  • Most can be discharged


Admit

  • Unable to tolerate PO
  • Hemodynamic instability
  • Significant comorbidities


See Also


References

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