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Spontaneous pneumomediastinum: Experience in 13 adult patients
Manoj K Panigrahi1, Cherlopalli Suresh Kumar2, Venugopal Jaganathan2
1Department of Pulmonary Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India panigrahimanoj75@gmail.com.
Insights
Spontaneous pneumomediastinum is generally benign, but underlying lung conditions like post-tubercular disease can complicate it. This study details its clinical profile and outcomes in India.
Area of Science:
- Pulmonology
- Thoracic Medicine
- Critical Care
Background:
- Spontaneous pneumomediastinum (SPM) is rare, with limited data specific to India.
- Understanding SPM's clinical presentation, hospital course, and long-term outcomes is crucial.
Purpose of the Study:
- To investigate the clinical characteristics, hospital course, and long-term outcomes of spontaneous pneumomediastinum patients in India.
Main Methods:
- Retrospective review of patients aged 15 years and above diagnosed with SPM.
- Data collected over a 7-year period (from 2005) at a tertiary care hospital.
Main Results:
- 13 SPM cases identified (0.39% of hospitalizations), median age 37 years.
- Dyspnea, neck swelling, and chest pain were common symptoms; 85% had subcutaneous emphysema and pre-existing lung disease.
- Pneumothorax occurred in 46% of patients; post-tubercular sequelae and asthma were frequent underlying conditions.
Conclusions:
- Spontaneous pneumomediastinum is typically benign, but complications arise from underlying lung diseases and pneumothorax.
- Exacerbation of post-tubercular obstructive airway disease is a significant risk factor in tuberculosis-endemic regions.
Background:
Spontaneous pneumomediastinum is an uncommon disorder. There is a lack of information on spontaneous pneumomediastinum in India. We aimed to understand the clinical profile, hospital course, and long-term outcome of such patients.
Methods:
We retrospectively reviewed all patients (aged ≥15 years) diagnosed with spontaneous pneumomediastinum in the respiratory ward of a tertiary care hospital over a 7-year period from 2005.
Results:
Of the 3326 patients hospitalized during the study period, 13 (10 male) were diagnosed with spontaneous pneumomediastinum, constituting 0.39% of all hospitalizations. The median age was 37 years (interquartile range 20-55 years). The most common presenting symptom was dyspnea in 85% followed by neck swelling (69%), chest pain (69%) and cough (54%). Subcutaneous emphysema and preexisting lung diseases were identified in 11 (85%) patients each. Post-tubercular pulmonary sequelae (5 patients) and asthma (4 patients) were the most common underlying lung diseases. Pneumothorax was identified in 6 (46%) patients; 4 required tube thoracostomy. Chest radiography was diagnostic in 92% of patients. The median length of hospital stay was 9 days (interquartile range 6-12 days). No recurrence was reported in 11 patients followed up for a median of 1550 days (interquartile range 691-1909 days).
Conclusions:
Spontaneous pneumomediastinum is a benign disorder, but underlying lung diseases and concomitant pneumothorax are likely to complicate the disease course. Exacerbation of post-tubercular obstructive airway disease is a common risk factor for spontaneous pneumomediastinum in a tuberculosis endemic country.
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