Question

4. Capillaries are by far the most common type of blood vessel in the body, and most capillaries are very porous-they leak fluid. Blood is mostly fluid. The swelling caused by fluids leaking from the blood into tissues is known as edema. Predict where in the body you would see edema related to left-sided heart failure, and where you would see edema related to right-sided heart failure. Be sure to explain your answers.

Answer 1

interestite un Hon fluid frem Edema is the presence of excess fluid in the body tissu Now the main causes of extracellulare edema are 4 Abnormal leakage of fluid from the plasma to to the interestiti al the interestin Spaces across capilariesas L failure of the lymphatics to return fluid from inte back into the blood. • In case of heart failuree, the heart fails to pump the blond, leading to rise in venous pressuree and capillary preessure and hence increases capillary filtration. The This also des Arterial p , and hence less water and salt is excreeted with which again increases fluid retention. This again causes release of Aldosteron and Angiotensin I, which causes further salt of watere reetention. 1 Priessure in O Patcant with left-sided heart facturee, has reaised pulmonarly reins, and capillaries because the right side of heart is functioning preoperely and the blood volume is constantly ingre increasing in the pulmonary creculation. | Hence Pulmonary edeme is the most commonly observed) I lt- Sidled heart failure - © In et siided heart failure, the blood is pumped normally by the Lt heart into the systemic circulation. But this systemie blood ean't reach the pulmonary cireculation again because the RE side has lost ability to pump and hence blood flows back to the reins, causing plot blood pooling in them . This causes edema in lege, ankles and belly )

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