If someone consumes drain cleaner, what is the immediate next step?

• A. Call poison control
• B. Induce vomiting
• C. Upper endoscopy
• D. Give activated charcoal

Answer: (C)

When someone consumes a corrosive substance like drain cleaner, the immediate next step is to ensure the patient's safety and health. In this scenario, performing an upper endoscopy is appropriate for several reasons.

First, drain cleaners contain highly caustic substances, such as strong acids or alkalis, which can cause severe damage to the esophagus and stomach. Upper endoscopy allows a healthcare professional to directly visualize and assess the extent of the damage to the upper gastrointestinal tract, helping to guide subsequent management decisions and interventions.

Other options may seem reasonable but are not the best next steps. Inducing vomiting can lead to further damage as the corrosive substance is brought back up through the esophagus. Activated charcoal is not recommended for corrosive substances since it does not effectively bind to them and may again risk further injury. While calling poison control is always a good practice, immediate medical evaluation is critical in this case due to the potential for serious injury from the ingestible, which is why an upper endoscopy is the most appropriate immediate step in management.