Question

New Window Help Patient B Age: 12 Sex: Female Height: 58 inches Race: Hispanic Medical history: Patient is experiencing shortness of breath after exercise, and has no previous diagnosis of asthma. Spirometry is ordered to determine if asthma is a possible cause of her symptoms Perform Spirometry

and also the observations of spirometry graph shapes

need help please!!

Answer 1

FEV is a Forced expiratory volume, it measures the volume of air exhaled through the mouth with the full inhalation in the first second. the normal range for FEV for the female is 3.25-2.5lit
FVC is a forced vital capacity for the total volume of air that we can able to blow forcefully following the full inhalation. normal range from 3.75 -3.25 liters.
FEV/FVC ratio parameters calculated by dividing the measured FEv1 ratio by measured FVC value.
The normal predicted percentage will be 70% and 85%, lower than 70% is abnormal due to airway obstruction(asthma)
The patient is having 34.7% in exercise indicate the risk of severe airway obstruction with uncontrolled asthma.
In the spirometry graph, there was a delay in reaching FVC(red mark) blue is normal. This is due to the worst obstruction that causes prolong expiration and it reduces the FVC and it changes the appearance of the flow-volume curve.
Flow graph when starting point it has normal expiration and slows down without interruption it indicates a respiratory problem(asthma) it reached zero flow.