| 摘要 |
PROBLEM TO BE SOLVED: To provide a respiratory function test apparatus reducing a burden of a subject when measuring a forced vital capacity.SOLUTION: When it is determined that it elapses an analysis period in S115 (Yes), a respiratory function test apparatus calculates a ratio of one-second forced expiratory volume to four-second forced expiratory volume; when the calculated evaluation value is 70% or less (Yes in S116), determines a relational expression between a respiratory capacity (a volume) and an expiratory flow rate (a flow) during an analysis period (S117); and calculates, based on the relational expression, the respiratory capacity (Y) when the expiratory flow rate (X) is zero, as the forced vital capacity (S118). The respiratory function test apparatus displays the calculated forced vital capacity (S119) without waiting a confirmation of an expiration termination and terminates the measurement. |
