Oct 1, 1974

Increased sheep lung vascular permeability caused by pseudomonas bacteremia

The Journal of Clinical Investigation
K L BrighamN C Staub

Abstract

In awake sheep, we compared the responses of lung lymph flow and lymph and plasma protein concentrations to steady state elevations of pulmonary vascular pressures made by inflating a left atrial balloon with those after an intravenous infusion of 10(5)-10(10)Pseudomonas aeruginosa. Lymph flow increased when pressure was increased, but lymph-plasma protein concentration ratios always fell and lymph protein flow (lymph flow x lymph protein concentration) increased only slightly. After Pseudomonas, sheep had transient chills, fever, leukopenia, hypoxemia, increased pulmonary artery pressure and lymph flow and decreased left atrial pressure and lymph protein concentration, 3-5 h after Pseudomonas, when vascular pressures and lymph protein concentrations had returned to near base line, lymph flow increased further to 3-10 times base line and remained at a steady level for many hours. During this steady state period, lymph-plasma protein concentration ratios were similar to base line and lymph protein flow was higher than in the increased pressure studies. Two sheep died of pulmonary edema 7 and 9 h after Pseudomonas, but in 16 studies, five other sheep appeared well during the period of highest lymph flow and all variables returned...Continue Reading

Mentioned in this Paper

Pseudomonas Infections
Pulmonary Edema
Lung
Dall Sheep
Vascular Permeability
Leukopenia
Lymph
Metazoa
Anoxia
Pyemia

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