Readings of spirometry are usually estimated first through a calculator that is

Question

Readings of spirometry are usually estimated first through a calculator that is based on height, weight and gender and then the actual readings are taken. At the end the interpretation is based on dividing the actual readings on the estimated readings. Use this in your calculations and interpretations of the cases. The calculator could be found in http://www.brianmac.co.uk/spirometer.htm While conducting a spirometry, a 45-years old female, 160cm values were as the followings: (all measurements in liters) V: 0.5; IRV: 3.1; ERV: 1.2; RV: 1.7; FVC: 3.9; IC: 3.5; FRC: 3; TLC: 6.1, FEV: 3.2 Are these readings normal or abnormal? If not determine what is the condition and Is the Spirometry readings within the normal values or not? If not, what would you predict the case to be?

Explanation / Answer

Answer

The values are normal. In normal conditions the determination of FVC (forced vital capacity), FEV (Forced expiratory volume), and the ratio of FEV/ FVC(Forced expiratory ratio)

In normal condition, the FVC is ? 80%

normal condition, the FEV is ? 80%

The FEV/ FVC ratio is ? 70%

In the given condition, the FVC is 115% indicates a normal value, FEV value is 116% and The FEV/ FVC ratio is 82%.

All the values indicate within the normal range, so there is no respiratory disease.

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