(一)原因： 1.静脉受压： 局部静脉受压→静脉回流受阻→淤血 例如：肝硬化→胃、肠淤血 肠扭转、肠套叠致肠系膜静脉淤血 2.静脉腔阻塞：见于静脉血栓形成。 3.心力衰竭： 左心衰→肺淤血 右心衰→体循环淤血 4.静脉血液坠积： 长期卧床→肺淤血、坠积性肺炎
（一）原因： 1.静脉受压： 局部静脉受压→静脉回流受阻→淤血 例如：肝硬化→胃、肠淤血 肠扭转、肠套叠致肠系膜静脉淤血 2.静脉腔阻塞：见于静脉血栓形成。 3.心力衰竭： 左心衰→肺淤血 右心衰→体循环淤血 4.静脉血液坠积： 长期卧床→肺淤血、坠积性肺炎
Acute pulmonary congestion Heavy wet lungs 。Deep red 。Ooze bloody fluid on sectioning deeper red
Acute pulmonary congestion • Heavy wet lungs • Deep red • Ooze bloody fluid on sectioning deeper red
Acute pulmonary congestion Foamy fluid effusion Ooze bloody fluid on sectioning
Acute pulmonary congestion Foamy fluid effusion Ooze bloody fluid on sectioning
Acute pulmonary congestion Alveolar capillaries filled with blood,intra-alveolar edema fluid
Acute pulmonary congestion Alveolar capillaries filled with blood, intra-alveolar edema fluid
Acute pulmonary congestion .Dilated blood vessels containing abundant RBC's Protein-rich edema fluid may also be present(pulmonary edema) -intra-alverolar hemorrhage
Acute pulmonary congestion •Dilated blood vessels containing abundant RBC’s •Protein-rich edema fluid may also be present (pulmonary edema) •intra-alverolar hemorrhage