ABSTRACT
Systemic blood flow (Q) was measured by echodopplercardiography in 5 normal young adult males during apnea, eupnea and tachypnea. Measurements were made in a recumbent posture at 3-min intervals. Tachypnea was attained by doubling the respiratory frequency at eupnea at a constant tidal volume. An open glottis was maintained during apnea at the resting respiratory level. The Q values were positively correlated with the respiratory frequency, decreasing from eupnea to apnea and increasing from eupnea to tachypnea (P<0.05). These data demonstrate that echodopplercardiography, a better qualified tool for this purpose, confirms the positive and progressive effects of ventilation on systemic blood flow, as suggested by previous studies based on diverse technical approaches.
Subject(s)
Adult , Humans , Male , Apnea/physiopathology , Blood Flow Velocity/physiology , Cardiac Output/physiology , Pulmonary Ventilation/physiology , Echocardiography, DopplerABSTRACT
Relata-se o caso de um paciente com mieloma multiplo que desenvolveou tuberculose pulmonar e histoplasmose disseminada. O Histoplasma capsulatum foi cultivado do material obtido por aspiracao transcutanea pulmonar. No estudo pos-mortem, confirmou-se a presenca do fungo em ambos os pulmoes, nos linfonodos mediastinais e, em maior numero, na supra-renal direita