How do you say Libradah in English? Pronunciation of Libradah. How To Pronounce is the largest audio directory which contains audio like names, words, places, medical terminology, animals names, etc., or any hard words in English, Portuguese, French, German, Italian, Spanish, Swedish and other languages using our pronunciation dictionary. You can browse all these data for free.
New Drug Stents Help Keep Heart Artery Open. Aug. 11, 2004 -- A new study shows that drug-coated stents designed to prevent repeat blockage of heart arteries apparently do just that. But Canadian researchers say there is no evidence that they actually prevent heart attack or death. Stents are small, wire-mesh tubes placed in a heart artery after balloon angioplasty, a procedure to reopen the artery when it's blocked or narrowed.
Veins have much thinner walls, because the blood they carry is under low pressure. VEINS have valves that aid the return of blood to the heart and prevent blood from going backwards. ARTERIES do not have valves, except for the semi-lunar valves of the pulmonary artery and the aorta. ARTERIES have relatively narrow lumens, VEINS have relatively wide lumens.