Effect of ventilation on systemic blood flow evaluated by echodopplercardiography
Braz. j. med. biol. res
;
30(5): 689-91, May 1997. tab, graf
Artigo
em Inglês
| LILACS
| ID: lil-196684
RESUMO
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.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Apneia
/
Velocidade do Fluxo Sanguíneo
/
Débito Cardíaco
/
Ventilação Pulmonar
Limite:
Adulto
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Braz. j. med. biol. res
Assunto da revista:
Biologia
/
Medicina
Ano de publicação:
1997
Tipo de documento:
Artigo
/
Congresso e conferência
/
Documento de projeto
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