Health Services

At The Woodlands Lung Center, our primary concern is patient care and service for both our outpatients and patients at area hospitals. Our physicians provide many services for a wide range of health conditions.


  • COPD
  • Emphysema
  • Chronic bronchitis
  • Asthma
  • Allergy
  • Rhinitis
  • Smoking cessation
  • Pulmonary fibrosis
  • Pulmonary hypertension
  • Sleep disorder
  • Interstitial lung disease
  • Lung cancer
  • Hemoptysis
  • Pulmonary nodules
  • Sarcoidosis
  • Tuberculosis


A cough is a sudden and often repetitively occurring reflex which helps to clear the large breathing passages from secretions, irritants, foreign particles and microbes.   Coughing can be either voluntary or involuntary. Excessive coughing can also be a hallmark of the presence of a disease.  Many viruses and bacteria benefit by making the host cough. Other causes of cough may be asthma, tobacco use and exposure, COPD, bronchitis, heart failure, post-nasal drip, gastroesophogeal reflux, pneumonia and pollutants.

COPD / Emphysema

Chronic obstructive lung disease is a progressive disease that makes it hard to breathe. We use the term “progressive” meaning it worsens over time.  COPD causes an increased production of sputum which, in turn, results in intermittent bronchitis, chest tightness and recurrent infection with prolonged and intermittent episodes of cough.

Cigarette smoking is the leading cause of COPD. Most people who have COPD are currently smokers or used to smoke. Long-term exposure to other lung irritants—such as air pollution, chemical fumes, or dust—also may contribute to COPD.

In COPD, less air flows in and out of the airways because of one or more of the following:

  • The airways and air sacs lose their elastic quality.
  • The walls between many of the air sacs are destroyed.
  • The walls of the airways become thick and inflamed.

If you have ever smoked and quit, you are at risk of developing this disease and screening is recommended. 

Critical Care Medicine

Our members have over 25 years of combined critical care experience. Drs. Araujo and Chang are board certified in critical care medicine.   We provide a broad and comprehensive systematic approach to our patients, keeping quality of life and family support as our main goals.  Besides seeing acutely ill patients in consultations at the hospitals, we also provide consulting services in local long-term care facilities and some local skilled nursing units.

Sleep Medicine, “Somnology”

Sleep apnea is a common disorder in which you have one or more pauses in breathing or shallow breaths while you sleep.   This condiiton disrupts your sleep.  When your breathing pauses or becomes shallow, you’ll often move out of deep sleep and into light sleep.  As a result, the quality of your sleep is poor, which makes you tired during the day.  Sleep apnea is a leading cause of excessive daytime sleepiness.