Specialist expertise: COPD, Sleep, Snoring, Home Ventilation, General Respiratory Medicine, Respiratory Medicine.
Oxygen is required for all organs of the body. The main function of the lung is to get oxygen (the ‘good gas’) into the body and to get carbon dioxide (the ‘bad gas’) out. To do this air is pumped in and out of the lungs by the breathing muscles but how hard they must pump depends on what the person is doing and whether any disease of heart or lungs is present. For instance, when somebody goes for a run the ‘pump’ needs to work harder in order to supply enough oxygen to the exercising muscles. However, because the person knows that they have gone for a run they expect to need to breathe harder and so they don’t normally regard this as abnormal (even though they might be ‘puffed out’ after the run).