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[The dynamics of the more important indices of the external respiration following heart surgery operations].

A retrospective study comprising patients undergone cardiac surgery is done. In the study some measurable parameters of external breathing are followed up. The measurements are carried out by portable respiratory monitor. The following parameters are included in the study: FVC, FEV1, PEF and FEF 25-75%. The lowering values of these parameters is taken into account and the degree and way to restore these values is discussed.