Case Study: Pediatric Furosemide Exposure – Evaluation and Management

Posted: March 18th, 2023

Furosemide Overdose in Pediatrics: A Case Study Analysis. Analyze a case study involving a 6-year-old who ingested furosemide, detailing assessment, complications, and treatment considerations.

PHARMACOLOGY/TOXICOLOGY CASE STUDY 

History:

A 6-year-old boy is brought to the emergency department by his mother, who is very worried. She explains that he accidentally got into her purse and may have ingested some of her furosemide tablets about an hour ago. The exact number of tablets is unknown. The child is currently asymptomatic, but his mother is concerned because she knows this medication is a strong diuretic.   

PMH:

None

Physical Examination:

• T: 98.6°F
• HR: 100 bpm
• RR: 20 breaths/minute
• BP: 100/60 mmHg

General: The child appears alert and playful. The rest of his physical exam is unremarkable.   

QUESTIONS CASE STUDY 

1. What initial steps should be taken in the management of this child?

2. What potential complications could arise from furosemide ingestion, and what signs would you look for?

3. Are there specific situations where activated charcoal might be considered?

4. How would you educate the mother about potential problems and follow-up care?

CASE STUDY : FUROSEMIDE EXPOSURE

1. In a case of potential diuretic ingestion, the first priority is to assess the child’s overall condition. Since the amount ingested is unknown, it’s important to gather more information from the mother about the strength of the furosemide tablets and how many might have been in the container. While the child is currently asymptomatic, it is essential to monitor him closely for any signs of developing symptoms.   

    

   While routine decontamination is not typically needed for diuretic exposure, activated charcoal could be considered under specific circumstances. If the child is alert and presents very soon after ingestion, it might be an option to minimize absorption.   

2. It’s more common to see adverse effects from chronic use or misuse of diuretics (like in sports or for dieting) than from a single accidental ingestion. Overdoses of diuretics are often benign, and serious consequences are uncommon.

    

    

   Furosemide, a loop diuretic, works in the ascending limb of the nephron in the kidneys. The main concerns following an overdose involve fluid and electrolyte imbalances. This could include dehydration and problems like: 

    
   • Hypokalemia (low potassium)
   • Hypercalcemia (high calcium)
   • Hypomagnesemia (low magnesium)
   • Hyponatremia (low sodium)   
      

   If these electrolyte abnormalities become severe, they could lead to various issues such as:

   • Cardiac arrhythmias
   • Muscle weakness
   • Hyporeflexia (decreased reflexes)
   • Tetany (muscle spasms)
   • Lethargy   
      

   It’s also possible for the child to experience nausea, vomiting, or diarrhea shortly after ingestion.    

3. As mentioned earlier, activated charcoal isn’t routinely used in diuretic exposures. However, it could be considered if the child is alert and presents within a short time after ingestion. The goal would be to try and prevent some of the drug’s absorption in the gastrointestinal tract.   

    

4. It’s important to provide clear and reassuring education to the child’s mother. Explain that, since her son is currently showing no symptoms, the situation is likely to resolve well.  

5. However, it’s crucial to instruct her on what signs to watch for over the next several hours, which include:

   • Increased urination
   • Signs of dehydration (dry mouth, decreased tears, lethargy)
   • Any changes in the child’s behavior or alertness
   • Nausea or vomiting   
      

   Advise her to contact the Poison Control Center or return to the emergency department if any of these develop.   

    

   In most cases, if the child remains asymptomatic, no specific intervention is needed. However, it would be prudent to have a follow-up plan, which might include a phone call later in the day or a repeat evaluation, depending on the circumstances and the mother’s level of concern.  

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