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[Pulmonary embolic ischemia: clinical and experimental aspects]
Fabio Biscegli Jatene1, Wanderley Marques Bernardo
1Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil.
Revista Da Associacao Medica Brasileira (1992)
|December 11, 2003
Summary
Pulmonary ischemia from artery occlusion can cause vascular remodeling and pulmonary hypertension, especially in chronic cases. Further research is needed to fully understand these relationships in lung tissue.
Area of Science:
- Cardiovascular Sciences
- Pulmonary Medicine
- Pathology
Context:
- Pulmonary ischemia, often caused by embolisms, can lead to chronic pulmonary thromboembolism.
- Bronchial circulation can compensate for arterial occlusion, mitigating immediate ischemic effects.
- Vascular remodeling in small arteries is associated with sustained high pulmonary pressure.
Purpose:
- To systematically evaluate the relationship between mechanical artery occlusion, pulmonary hypertension, and vascular remodeling.
- To understand these relationships in both ischemic and non-ischemic lung parenchyma.
Summary:
- Mechanical artery occlusion in the lungs does not always result in severe ischemia due to compensatory bronchial circulation.
- Persistent high pulmonary pressure secondary to occlusion can lead to small artery vascular remodeling, particularly in chronic pulmonary thromboembolism.
- Experimental models exist, but a systematic evaluation is required to fully elucidate these complex interactions.
Impact:
- This research aims to improve understanding of pulmonary vascular remodeling and hypertension.
- Findings could inform the diagnosis and treatment of chronic pulmonary thromboembolism.
- A comprehensive understanding is crucial for managing patients with pulmonary artery occlusion and associated conditions.