Acids in toilet bowl cleaners and industrial agents
Outcomes distribution
Most accidental exposures minor
Intentional exposures higher grade injury rates
Pathophysiology
Injury mechanisms
Alkali injury
Liquefaction necrosis
Deep penetration risk
Esophageal predominance common
Acid injury
Coagulation necrosis
Eschar formation with variable depth
Gastric injury prominence possible
Timeline of tissue vulnerability
Early inflammation within hours
Tissue slough and friability days 5 to 15
Stricture formation weeks to months
Therapeutic Considerations
Treatment principles
Supportive care mainstay
Airway protection prevents mortality
Early risk stratification guides nutrition and monitoring
Endoscopy role
Direct mucosal grading supports prognosis
Avoid during peak friability window when possible
Imaging role
CT identifies transmural injury and perforation
CT complements EGD in severe cases
Guideline framing
Early GI involvement Class I consensus
Avoid neutralization and emesis Class III harm consensus
Steroids selective use only Class IIb consensus
Patient Discharge Instructions
copy discharge instructions
Discharge instructions for low risk exposure
Fluids and soft diet as tolerated if no pain with swallowing
Avoid alcohol and spicy foods for 24 to 48 hours
Small frequent sips if throat irritation
Medication guidance
Take prescribed acid suppression as directed
Use acetaminophen for pain within safe limits
Return to ED now for any red flags
Trouble breathing
Noisy breathing
Drooling or inability to swallow saliva
Vomiting that will not stop
Vomiting blood or black stools
Chest pain
Severe belly pain
Fever
New confusion or fainting
Follow up plan
Primary care within 2 to 3 days if symptoms persist
GI follow up if swallowing difficulty develops in coming weeks
Prevention counseling
Store chemicals locked and original containers
Do not transfer cleaners to drink bottles
References
Clinical guidelines and consensus
Key guidance sources
European Society of Gastrointestinal Endoscopy guideline on caustic ingestion management
Early endoscopy risk stratification recommendations
Avoidance of neutralization and emesis recommendations
American Society for Gastrointestinal Endoscopy guidance on caustic ingestion
Endoscopy timing and contraindications
Management of strictures and long term follow up
Poison control and toxicology consensus references
Substance specific risk profiles
Home exposure triage criteria
Evidence based sources
Foundational evidence
Zargar classification original and follow up studies
Correlation of endoscopic grade with outcomes
Stricture risk with higher grades
Observational studies on CT predictors of transmural injury
CT findings associated with need for surgery
CT as adjunct to endoscopy in severe cases
Systematic reviews on corticosteroids for stricture prevention
Mixed results and selective use conclusions
Adverse effect considerations
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