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Dr. Shoyeb
এমবিবিএস
,
পিজিটি(মেডিসিন)
,
সিসিডি(বারডেম)
,
সিএমইউ
Peak expiratory flow: Abbreviated PEF. The maximum airflow during a forced expiration beginning with the lungs fully inflated. The PEF is reduced in proportion to the severity of the airway obstruction, as in asthma and COPD ( chronic obstructive pulmonary disease).
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