from Section 4 - Pulmonary Conditions Related to Pregnancy
Published online by Cambridge University Press: 14 April 2020
Pulmonary oedema (PED) is an accumulation of fluid in the lung interstitium and alveoli. PED is typically divided into cardiogenic and non-cardiogenic mechanisms. Cardiogenic PED, or congestive heart failure, occurs when the heart is unable to pump the blood returning from the lungs to the body effectively, either as a result of intrinsic heart dysfunction or external effects such as hypertension causing increased afterload. Non-cardiogenic PED, also known as acute respiratory distress syndrome (ARDS), occurs due to changes in capillary membrane permeability, resulting in the accumulation of fluid in the alveoli and interstitium. PED complicates between 0.08% and 0.5% of pregnancies.
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