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Inferior vena cava syndrome (IVCS) is a very rare constellation of symptoms resulting from either obstruction or stenosis of the inferior vena cava. It can be caused by physical invasion or compression by a pathological process, or by thrombosis within the vein itself. It can also occur during pregnancy. Symptoms including high venous pressure ...
Aortocaval compression syndrome, also known as supine hypotensive syndrome, is compression of the abdominal aorta and inferior vena cava by the gravid uterus when a pregnant woman lies on her back, i.e. in the supine position.
There is also increased blood stasis due to the compression of the vena cava by the enlargening uterus. [28] Many factors have been shown to increase the risk of clots in pregnancy, including baseline thrombophilia, cesarean section, preeclampsia, etc. [ 25 ] Clots usually develop in the left leg or the left iliac/ femoral venous system. [ 29 ]
Oxygenated blood from the placenta is carried to the fetus by the umbilical vein, which will drain into the inferior vena cava (IVC) through the ductus venosus or the liver. [5] When oxygenated blood enters the IVC, it moves in parallel with deoxygenated blood from the fetal systemic veins, establishing a bilaminar blood flow as it enters the ...
Peripheral edema swelling of the lower limbs. Common complaint in advancing pregnancy. Can be caused by inferior vena cava syndrome resulting from compression of the inferior vena cava and pelvic veins by the uterus leading to increased hydrostatic pressure in lower extremities.
Compression of the inferior vena cava (IVC) [23] and pelvic veins by the uterus leads to increased hydrostatic pressure in the vasculature of the lower extremities. This increase in pressure shunts fluid from within the vasculature to the extracellular space.
A combination of pregnancy-exacerbated hypercoagulability and additional risk factors such as obesity and thrombophilias makes pregnant women vulnerable to thrombotic events [29] T.he prophylactic measures that include the usage of low molecular weight heparin, in fact, can significantly reduce risks associated with surgery, particularly in ...
Vena cava compression: An increase in the resistance of the vena cava, as occurs when the thoracic vena cava becomes compressed during a Valsalva maneuver or during late pregnancy, decreases return. Gravity : The effects of gravity on venous return seem paradoxical because when a person stands up, hydrostatic forces cause the right atrial ...