[Criteria of the operability of patients with a common arterial trunk based on hemodynamic data].

Criteria of operability of patients with a common arterial trunk were evaluated from a complex of hemodynamic, clinical, and morphological data. The patients were divided into 2 main groups according to the value of the pulmonary blood flow (PBF): group 1 with the pulmonary to systemic blood flow ratio (PBF/SBF) greater than 1; group 2 with PBF/SBF less than 1. The indications for operation in group 1 depended on the degree of PBF increase. For instance, an operation was indicated for patients with marked increase of PBF (PBF/SBF greater than 2); in cases with moderate PBF growth [formula: see text] the indications for operation were determined only after additional lung biopsy. The operation was not indicated for group 2 patients (PBF/SBF less than 1.0) because of the severity of their condition due to obstructive pulmonary vascular disease.