Explore Pulmonary Medicine by Topic
Key Takeaways
- Pulmonary medicine spans several broad disease families: obstructive lung disease like asthma and COPD, interstitial and pleural disease, pulmonary vascular disease, and conditions that affect breathing support like chronic respiratory failure.
- Pulmonary function testing and spirometry are the starting point for most obstructive and restrictive lung disease evaluations, with imaging, bronchoscopy, and specialized tests added based on the specific pattern of symptoms.
- Persistent or new symptoms, an unexplained abnormal chest X-ray or CT, coughing up blood, or shortness of breath that does not have an obvious explanation are all reasons to be evaluated rather than waiting.
- Lung health connects closely to sleep and weight; conditions like nocturnal hypoxemia and obesity hypoventilation syndrome sit directly at that intersection and often benefit from coordinated care.
Patient Questions
What is the difference between asthma and COPD?
Both are obstructive lung diseases that can cause wheezing, cough, and shortness of breath, but they typically differ in onset, cause, and reversibility. Asthma often begins earlier in life, is commonly triggered by allergens or exercise, and its airflow obstruction is usually substantially reversible with a bronchodilator. COPD is more often associated with a significant smoking history, develops later in life, and its airflow obstruction is only partially reversible. Some patients have features of both, a recognized overlap.
When does a cough become a medical concern?
A cough lasting more than eight weeks is generally considered chronic and worth evaluating, as is any cough accompanied by coughing up blood, unexplained weight loss, fever, or shortness of breath, regardless of duration.
What does an abnormal chest X-ray or CT scan usually mean?
Most incidental findings, such as a small nodule or mild scarring, are not cancer and do not require immediate alarm. The finding is evaluated in the context of your symptoms, history, and risk factors, and the next step is often correlation with prior imaging, a follow-up scan, or specialist referral rather than an immediate invasive procedure.
How is lung function actually measured?
Pulmonary function testing and spirometry measure how much air you can move and how quickly, and are the foundation for diagnosing and monitoring most obstructive and restrictive lung conditions. Additional tests such as DLCO, FeNO testing, methacholine challenge testing, and exercise testing add more specific information depending on what is being evaluated.
How does lung disease relate to sleep and weight?
Lung disease, sleep, and weight influence each other. Conditions like COPD and interstitial lung disease can worsen oxygen levels overnight even without a separate sleep-disordered breathing diagnosis, and excess weight can reduce lung volumes and worsen breathlessness independent of a specific lung disease. VitalAir evaluates these connections together rather than treating each in isolation.
When should I see a pulmonologist rather than my primary care physician?
A primary care physician is a reasonable starting point for many respiratory symptoms and can order initial testing. A pulmonologist becomes particularly useful for an abnormal chest imaging finding, a diagnosis that needs confirming with specialized testing like bronchoscopy or right heart catheterization, a condition that has not responded to initial treatment, or a less common disease like interstitial lung disease, pulmonary hypertension, or sarcoidosis.