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Pulmonary Embolism, Thrombosis and Infarction (view source)
Revision as of 17:09, 19 February 2011
, 17:09, 19 February 2011Created page with "right|thumb|100px|<small><center>Pulmonary infarction (Image sourced from Bristol Biomed Image Archive with permission)</center></small> [[Imag..."
[[Image:Pulmonary infarction.jpg|right|thumb|100px|<small><center>Pulmonary infarction (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
[[Image:Segmental pulmonary infarction.jpg|right|thumb|100px|<small><center>Segmental pulmonary infarction (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
*Lungs are strategically situated to catch emboli carried in venous blood
*Because the lung is supplied by both pulmonary and bronchial arteries and has extensive collateral channels, infarction usually does not follow embolism or thrombosis unless pulmonary circulation is already compromised
*In animals, greatest risk comes from:
**'''Tumor emboli'''
***From e.g.: osteosarcoma and haemangiosarcoma in dogs, uterine carcinoma in cattle
**'''Septic emboli'''
***From bacterial [[Endocarditis|endocarditis]], jugular thrombophlebitis, [[Hepatic Abscessation|hepatic abscesses]] etc.
***May cause unexpected death if in large numbers
***May develop [[Lungs Inflammatory - Pathology|suppurative pneumonia]] -> [[Lungs Inflammatory - Pathology#Pulmonary abscesses|pulmonary abscesses]], [[Arteritis|arteritis]], [[Thrombosis|thrombosis]]
*Pulmonary infarcts usually occur when there is embolisation or thrombosis during general circulatory collapse or passive congestion of heart failure
*Pulmonary thromboembolism is a sequel to in cattle to large emboli from liver abscesses close to the vena cava
**Death may ocur due to massive haemorrhaging into lung tissue
*Parasites (e.g. [[Respiratory Parasitic Infections - Pathology#Dirofilaria immitis|''Dirofilaria immitis'']], [[Respiratory Parasitic Infections - Pathology#Angiostrongylus vasorum|''Angiostrongylus vasorum'']]) may be responsible
*Long-term intravenous catheterisation may cuse thrombi pieces breaking off and lodging in pulmonary vessels
[[Category:Lungs - Circulatory Pathology]]
[[Image:Segmental pulmonary infarction.jpg|right|thumb|100px|<small><center>Segmental pulmonary infarction (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
*Lungs are strategically situated to catch emboli carried in venous blood
*Because the lung is supplied by both pulmonary and bronchial arteries and has extensive collateral channels, infarction usually does not follow embolism or thrombosis unless pulmonary circulation is already compromised
*In animals, greatest risk comes from:
**'''Tumor emboli'''
***From e.g.: osteosarcoma and haemangiosarcoma in dogs, uterine carcinoma in cattle
**'''Septic emboli'''
***From bacterial [[Endocarditis|endocarditis]], jugular thrombophlebitis, [[Hepatic Abscessation|hepatic abscesses]] etc.
***May cause unexpected death if in large numbers
***May develop [[Lungs Inflammatory - Pathology|suppurative pneumonia]] -> [[Lungs Inflammatory - Pathology#Pulmonary abscesses|pulmonary abscesses]], [[Arteritis|arteritis]], [[Thrombosis|thrombosis]]
*Pulmonary infarcts usually occur when there is embolisation or thrombosis during general circulatory collapse or passive congestion of heart failure
*Pulmonary thromboembolism is a sequel to in cattle to large emboli from liver abscesses close to the vena cava
**Death may ocur due to massive haemorrhaging into lung tissue
*Parasites (e.g. [[Respiratory Parasitic Infections - Pathology#Dirofilaria immitis|''Dirofilaria immitis'']], [[Respiratory Parasitic Infections - Pathology#Angiostrongylus vasorum|''Angiostrongylus vasorum'']]) may be responsible
*Long-term intravenous catheterisation may cuse thrombi pieces breaking off and lodging in pulmonary vessels
[[Category:Lungs - Circulatory Pathology]]