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Pulmonary Oedema |
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The main cause of pulmonary oedema is
pulmonary capillary congestion due to left ventricular failure
Pulmonary oedema is due to an increase of fluid in alveolar walls (pulmonary
interstitium)
which, if severe, subsequently affects alveolar spaces.
The main cause of
pulmonary oedema is
failure of the left ventricle, causing increased pressure in the alveolar
capillaries.
Fluid leaks from capillaries into the pulmonary interstitium, and there is
increase in flow of
fluid into pulmonary lymphatics.
This increases the stiffness of the lungs,
giving rise to a
subjective sensation of dyspnoea. Such a condition may remain stable for a long
period of time.
In severe left ventricular failure, fluid also leaks into alveolar spaces,
resulting in severe
acute impairment of respiratory function.
Capillary rupture leads to leakage of red cells into the interstitium, as well
as into alveoli.
Haemoglobin is phagocytosed by macrophages, which accumulate iron pigment and
lie in alveoli and
interstitium. They are often termed 'heart-failure cells'. |
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We give here simplified and accurate information about the disease
Info@somalidoc.com |
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