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juniors    音标拼音: [dʒ'unjɚz]
n. 後进

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  • Problem: Heart Valve Regurgitation - American Heart Association
    Read more about regurgitation and specific valves: Mitral regurgitation is leakage of blood backward through the mitral valve each time the left ventricle contracts Aortic valve regurgitation may stem from a congenital heart defect, complications of an infection or other more rare causes
  • Heart Valve Disease - American Heart Association
    The American Heart Association explains how your heart valves work and any problems or disease your valves can acquire, including regurgitation, stenosis and prolapse
  • Problem: Mitral Valve Regurgitation - American Heart Association
    Mitral regurgitation is leakage of blood backward through the mitral valve each time the left ventricle contracts Learn about ongoing care of this condition
  • Problem: Aortic Valve Regurgitation - American Heart Association
    What causes aortic regurgitation? Common causes of severe aortic regurgitation are bicuspid valve disease, congenital abnormalities, primary diseases in the ascending aorta or dilated aortic sinuses Acute aortic regurgitation can be caused from bacterial infections of the heart tissue, after chest trauma or from calcific valve disease
  • Heart Valve Problems and Causes - American Heart Association
    Regurgitation: the valve does not close completely allowing blood to flow backward into the chamber Atresia: valve is completely closed Causes of valve problems The causes of valve problems can often be linked to birth defects, related to age or caused by another condition View our heart valve animations library
  • Problem: Tricuspid Valve Regurgitation - American Heart Association
    Tricuspid regurgitation is leakage of blood backwards through the tricuspid valve each time the right ventricle contracts Learn about ongoing care of this condition
  • Roles of Your Four Heart Valves - American Heart Association
    Opens to allow blood to leave the heart from the left ventricle through the aorta and the body Prevents the backflow of blood from the aorta to the left ventricle Related valve problems include: aortic regurgitation (also called aortic insufficiency), aortic stenosis Essentials for properly working valves The valve is properly formed and
  • Testing for Heart Valve Problems - American Heart Association
    To fully understand your heart valve problem, your medical team may want to perform a series of tests to provide a complete picture of what needs repair and what may be best left alone Learn about the various tests you may undergo
  • Recognizing the Symptoms of Worsening Heart Valve Disease
    Would you recognize the symptoms of worsening heart valve disease? When heart valve problems are severe, there are often no recognizable symptoms until heart damage has progressed significantly
  • Heart Valves and Infective Endocarditis
    These bacteria can lodge on heart valves and cause infection of the endocardium Why does endocarditis pose a threat to the heart valves? Bacteria can grow on the valves and it is difficult to fight this infection, whether through the body’s own immune system or through medications that rely on the blood system for delivery





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