noun
embolism
Medical term for the obstruction of a blood vessel by an embolus (blood clot, air bubble, fat globule, etc.).
肺塞栓症は命に関わることがある。
Pulmonary embolism can be life-threatening.
手術後に塞栓症を
Anticoagulants are used to prevent embolism after surgery.
梗塞 (infarction) is tissue death due to lack of blood supply, often caused by embolism or thrombosis.
Compound of 塞栓 (そくせん, 'embolus') + 症 (しょう, 'disease/condition'). 塞栓 is itself composed of 塞 (block/obstruct) and 栓 (plug/stopper).