Articles: extravascular-lung-water.
-
Fiziol Zh SSSR Im I M Sechenova · Jun 1991
[Microvascular reactivity and transcapillary fluid exchange in the lungs].
In anesthetized cats and rabbits responses of terminal pulmonary vessels to alveolar hypoxia, noradrenaline, histamin, acetylcholine and serotonine, were studied. The role of the vascular bed tone in regulation of pulmonary filtration-absorption function, was studied. ⋯ Their contribution to hemodynamic shifts in microcirculation was insignificant. Pulmonary vasomotor responses cannot be a reason for considerable extravascular accumulation of fluid in the lungs at a normal hydraulic permeability of alveolar-capillary membrane.
-
Fiziol Zh SSSR Im I M Sechenova · Apr 1991
[Changes in the systemic and regional hemodynamics, hydration and engorgement of the lungs during occlusion of the thoracic aorta].
The occlusion of the rat aorta's thoracic portion induces within 30 min hemodynamic shifts in major and minor circulation typical for a hypertensive incident. The occurring 4-5-fold increase of the lung venous pressure leads to no regular lung oedema and is of no major importance for its pathogenesis.
-
Critical care medicine · Jan 1991
Increased extravascular lung water in patients with low pulmonary artery occlusion pressure after acute myocardial infarction.
To evaluate the clinical characteristics of increased extravascular lung water (EVLW) in patients with low pulmonary artery occlusion pressure (PAOP) in the early phase of acute myocardial infarction. ⋯ Larger infarcts led to increased EVLW even with low PAOP, and the accumulation of increased EVLW around the small arterioles might have led to increased pulmonary vascular resistance.
-
Critical care medicine · Jan 1991
Randomized Controlled Trial Comparative Study Clinical TrialSingle versus double indicator dilution measurements of extravascular lung water.
To compare a simplified method of measuring extravascular lung water (EVLW) using only a single indicator (EVLW-SI) with the standard double indicator dilution technique (EVLW-DI). ⋯ Theoretically, neither injection of green dye nor blood withdrawal should be necessary during measurements of EVLW-SI, making it a simpler technique for bedside use than EVLW-DI. However, significant discrepancies exist between the two techniques. Some of this difference is apparently due to technical factors related to catheter design. In any case, we cannot recommend use of the single indicator dilution technique at present to estimate EVLW.
-
The areas of perivascular edema cuffs surrounding pulmonary arteries and veins were sequentially measured as an index of the fluid transport unit in lung interstitium (FTULI) in epinephrine-induced and oleic acid-induced pulmonary edema in rats. The former edema represents a model of hemodynamic edema and the latter, permeability pulmonary edema, respectively. In epinephrine-induced pulmonary edema, both the ratio of edema cuff area to cross-sectional area of the pulmonary artery (Rr) and the ratio of lung weight to body weight (L/B) were increased in parallel, reached maximum levels at 0.5 h after the treatment, and returned to the control levels after 3 h. ⋯ Rr returned close to the control level in 24 h but L/B remained elevated so that rate of recovery was delayed. The cuffs around the veins appeared similar to those around the arteries, but were very slight in both models. The difference in the time course of Rr and L/B in the two models may suggest that the recruitment of FTULI is insufficient in oleic acid-induced pulmonary edema; this limitation seems to be an important factor which makes the permeability edema refractory to treatment, together with the damage to the blood gas barrier.