Articles

  • Disease

    Obesity hypoventilation syndrome (OHS)

    Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.

    Obesity hypoventilation syndrome (OHS) is a condition in obese people in which poor breathing leads to lower oxygen and higher carbon dioxide levels in the blood.

  • Disease

    Obstructive sleep apnea

    Massively enlarged tonsils can cause episodes of cessation of breathing known as obstructive sleep apnea.  Cessation of breathing can last 10 seconds or longer, causing extremely low levels of oxygen in the blood.

    Obstructive sleep apnea is a condition in which the flow of air pauses or decreases during breathing while you are asleep because the airway has become narrowed, blocked, or floppy. A pause in breathing is called an apnea episode. A decrease in airflow during breathing is called a hypopnea episode. ...

  • Disease

    Occupational Asthma

    Spirometry is a painless study of air volume and flow rate within the lungs. Spirometry is frequently used to evaluate lung function in people with obstructive or restrictive lung diseases such as asthma or cystic fibrosis.

    Occupational asthma is a lung disorder in which substances found in the workplace cause the airways of the lungs to swell and narrow. This leads to attacks of wheezing, shortness of breath, chest tightness, and coughing.