Nitrofurantoin-Induced Lung Injury: A Reminder of an Overlooked Threat
Aasir M Suliman1, Mohammed A Alamin2, Irfan Ul Haq1
1Pulmonology, Hamad Medical Corporation, Doha, QAT.
Abstract:
Nitrofurantoin is a commonly prescribed antibiotic for urinary tract infection (UTI) treatment and prophylaxis. Although relatively rare, nitrofurantoin can cause a spectrum of lung injuries, from acute hypersensitivity reactions that might be fatal to chronic reactions involving fibrosis. Therefore, treating physicians' awareness and regular monitoring is essential for early recognition, drug withdrawal, avoiding unnecessary treatment, and preventing irreversible fibrosis. Here, we report the case of a 77-year-old woman who had been hospitalized with interstitial lung disease due to chronic nitrofurantoin therapy. Despite the severity of symptoms and the extent of radiological lung involvement, she returned to her clinical and radiological baseline shortly following the drug cessation.
Insights
Nitrofurantoin can cause serious lung injury, including fibrosis. Early recognition and drug cessation are crucial for recovery, as demonstrated in a case of interstitial lung disease.
Area of Science:
- Pulmonology
- Pharmacology
- Internal Medicine
Background:
- Nitrofurantoin is a widely used antibiotic for urinary tract infections (UTIs).
- Nitrofurantoin-induced lung injury (NILI) is a rare but serious adverse effect.
- NILI can manifest acutely or chronically, potentially leading to pulmonary fibrosis.
Observation:
- A 77-year-old woman developed interstitial lung disease (ILD) after chronic nitrofurantoin use.
- The patient presented with severe symptoms and significant radiological lung involvement.
- Pulmonary function and imaging normalized shortly after discontinuing nitrofurantoin.
Findings:
- This case highlights the potential for chronic nitrofurantoin therapy to cause severe ILD.
- Prompt drug cessation led to a remarkable clinical and radiological recovery.
- Early identification and management are key to preventing irreversible lung damage.
Implications:
- Physicians must maintain a high index of suspicion for NILI in patients on long-term nitrofurantoin.
- Regular monitoring and patient education are essential for early detection and intervention.
- Timely withdrawal of nitrofurantoin can prevent progressive pulmonary fibrosis and improve patient outcomes.
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