Sites of Vasoactivity in the Pulmonary Circulation Evaluated Using a Low-Viscosity Bolus Method

摘要: Because of the importance pulmonary capillary pressure in fluid balance lungs and propensity for various vasomotor stimuli to cause constriction veins (Dawson, 1984), there has been considerable interest methods determining arteriovenous sites vasoconstriction. A number approaches have used, each approach had advantages disadvantages (Agostoni Piiper, 1962; Bhattacharya Staub, 1980; Brody et al., 1968; Bronikowski 1985; Dawson 1988; Gaar 1967; Gable Drake, 1978; Kadowitz 1975; McDonald Butler, Michel 1984; Nagasaka 1970; Zhuang 1983). Like several other methods, low-viscosity bolus method an experimental used studies pump-perfused lungs. In such it potential providing some unique insights into influence vasomotion on longitudinal distribution vascular resistance intravascular from artery veins. The method, originally introduced by Piiper (1970), modified al. (1968) Grimm (1977) more recently us (Dawson 1988) attempt improve resolution take advantage this potential.