文档介绍：Chapter 3
hemodynamic derangements
department of pathology
Hemodynamic amount hyperaemia
ischemia
ponent
appearance mass thrombosis
embolism
Vascular infarct
completion bleeding
permeability edema
caducity
artery
×
blood
fluid
Section 1. hyperaemia
an increased volume of blood in an affected tissue or pert
arterial hyperaemia ( active )
venous hyperaemia ( passive )
department of pathology
When arterial or arteriolar dilatation produces an increased flow of blood into capillary beds,are called arterial hyperaemia,also called active hyperaemia.
‘ ear and face into red ’
department of pathology
Active hyperaemia
Physiological
Inflammatory
After reducing pressure
department of pathology
Passive hyperaemia
may be pathological meaning
When impaired venous drainage, are called passive hyperaemia
also called congestion
may occur as a systemic
occur as a localized
department of pathology
Pathogenesis of congestion
1. localized
2. Systemic: heart failure
detaining
Pressure
department of pathology
Morphology:
wet
weight
blue-red coloration
temperature
an increase of deoxygenated haemoglobin
department of pathology
Morphology:
Normal capillary
congestion
Congestive edema
Congestive haemorrhage
Congestive sclerosis
congestion of ans :
of lung:
pathogenesis---
familiar in left ventricular failure
left ventricular failure
elevated left atrial pressure
elevated pulmonary venous pressure
department of pathology