Assuntos
Glândulas Suprarrenais , Hipotensão/tratamento farmacológico , Extratos Hepáticos/administração & dosagem , Extratos de Tecidos/administração & dosagem , Vitamina B 12/administração & dosagem , Complexo Vitamínico B/administração & dosagem , Adulto , Idoso , Ensaios Clínicos como Assunto , Convalescença , Combinação de Medicamentos , Avaliação de Medicamentos , Feminino , Humanos , Extratos Hepáticos/uso terapêutico , Masculino , Pessoa de Meia-Idade , Extratos de Tecidos/uso terapêutico , Vitamina B 12/uso terapêutico , Complexo Vitamínico B/uso terapêuticoRESUMO
In 22 chronic bronchitics with or without emphysema, the authors measured regional pulmonary perfusion in the supine position and calculated the ratios of radio-active tracer (131I-MAA) concentrations in the lung apices and bases (U/L ratio). This ratio was found to be normal in the right lung and tendentially high (though not to a statistically significant degree) in the left lung, this being probably due to the presence of an enlarged heart (13 patients showed evidence of right ventricle hypertrophy and/or overload). The correlation between the U/L ratio and functional impairment of respiration expressed spirometrically failed to reach statistical significance and the same was true of the correlation between the U/L ratio and mean pulmonary arterial pressure at rest.