Asthma: In simple terms asthma refers to increased responsiveness of lower airways to multiple stimuli. It can be acute – when it lasts for a short period or chronic- when it lasts for days.
Bronchioles: The tiny branches of air tubes in the lungs.
Pulmonary hypertension: Increased blood pressure in the arteries supplying blood to the lungs; caused by increased resistance to blood flow in the lungs, usually a result of a lung disease
Cyanosis: Blue colored skin caused by too little oxygen in the blood.
Spirometry: An instrument used to measure the lung’s capacity.