Answer:
Nasal cannula.
Explanation:
Chronic obstructive pulmonary disease (COPD) is a common inflammatory lung disease which makes it tough to breath. It is caused due to exposure to various gases and tobacco smoking. Which lead to more production of muscus and sputum and shortness of breath. It develop heart disease and Lung cancer.
It is been said in the question that oxygen is been ordered as required for treatment of dyspnea.
Dyspnea is name given to the shortness of breath.
In case of dyspnea, oxygen is required to fulfil the need of flow of oxygen, therefore, Nasal cannula will be very helpful in delivering supplementary oxygen to patient who are facing respiratory problem.
