Respiratory acidosis other diagnostic studies

Other diagnostic studies for respiratory acidosis include pulmonary function tests, which are necessary for the diagnosis of the chronic obstructive lung disease.

• For the estimation of the severity of obstructive lung disease Pulmonary function test are required for the diagnosis and shows the following
  • FEV₁=Forced expiratory volume in 1 second
  • It is the most commonly used index of airflow obstruction
  • FVC= Forced vital capacity
    • The ratio of FEV_1.0 to forced vital capacity is reduced
  • Increase inTLC= Total lung capacity, FRC= Functional residual capacity, and RV= Residual volume in obstructive airway diseases
  • TLC=Total lung capacity is decreased in restrictive lung diseases

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