Pursed lip breathing is beneficial for people with chronic lung disease. It can help strengthen the lungs and make them more efficient. Two key conditions that come under the term COPD are emphysema and chronic bronchitis. Some doctors also include nonreversible or refractory asthma under this term.Click to see full answer. Thereof, what is the purpose of pursed lip breathing?Pursed lip breathing works by moving oxygen into your lungs and carbon dioxide out of your lungs. This technique helps to keep airways open longer so that you can remove the air that is trapped in your lungs by slowing down your breathing rate and relieving shortness of breath. does pursed lip breathing promote carbon dioxide elimination? Pursed-lip breathing is a breathing exercise where inhalation of air slowly through nose and exhalation slowly through mouth by pursing the lips. Pursed-lip breathing primarily slows down the respiratory rate and assists in emptying the lungs of retained CO2. It helps in self-recovery from chronic respiratory symptoms. Hereof, how do you do pursed lip breathing? Sit with your back straight or lie down. Inhale through your nose for two seconds, feeling the air move into your abdomen. Purse your lips like you’re blowing on hot food and then breathe out slowly, taking twice as long to exhale as you took to breathe in. Then repeat. Does pursed lip breathing help prevent small airways from collapsing?Pursed Lip Breathing. Pursed-lip breathing slows the respiratory rate and increases intra-airway pressures, thus decreasing small airway collapse during periods of increased dyspnea.