在心脏病发作后，医生立即使用了溶栓药物来疏通堵塞的血管。

After the heart attack, doctors quickly used ___thrombolytics to clear the blocked blood vessel.

医生决定使用溶栓药物来治疗患者的腿部血栓。

The doctor decided to administer ___thrombolytics to treat the blood clot in the patient's leg.