Related Experiment Video
Updated: Jun 15, 2026

04:44
Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
[Drug-induced pulmonary interstitial disease]
J Freise1, P Wehmeier, T Welte
1Medizinische Hochschule Hannover, Klinik für Pneumologie. Freise.Julia@mh-hannover.de
Deutsche Medizinische Wochenschrift (1946)
|March 4, 2010
Summary
Interstitial lung disease can be caused by medications like nitrofurantoin and amiodarone. Discontinuing the suspected drug and starting corticosteroids can improve symptoms.
Area of Science:
- Pulmonology
- Pharmacology
- Toxicology
Background:
- Two patients presented with dyspnea and cough, with one on long-term nitrofurantoin for renal calculi and the other on amiodarone for cardiac disorders.
- Both patients exhibited reduced general health and significant respiratory compromise upon admission.
Observation:
- Patient 1 showed bronchiectatic infiltrative changes on chest X-ray, while Patient 2 had extensive interstitial infiltrates on CT scan.
- Both patients had low oxygen saturation (pO(2) of 68 mm Hg), even with supplemental oxygen in one case.
Findings:
- Pulmonary changes were attributed to nitrofurantoin and amiodarone.
- Discontinuation of these drugs and initiation of corticosteroid therapy led to rapid clinical improvement in both patients.
Implications:
- Drug-induced lung disease should be considered in the differential diagnosis of interstitial lung diseases.
- While causal links can be challenging, strong suspicion warrants drug withdrawal and potential corticosteroid use for symptom management.
Related Concept Videos
Pulmonary Tuberculosis I
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Drug toxicity: Idiosyncratic Reactions
Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...
Drug Toxicity: Allergic Reactions
Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...
Chronic Obstructive Pulmonary Disease-II: Pathophysiology
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
Chronic Obstructive Pulmonary Disease II: Emphysema
Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
Acute Respiratory Failure-II
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include: