Tingting asked in 社會與文化語言 · 1 decade ago

誰知道這句話的中文意思

lIndirectly, hypoxemia may affect cardiac function by various neurohormonal mechanisms, such as increased sympathetic activity and a mismatch between endothelin-1, a potent vasoconstrictor, and nitric oxide, a vasodilator. The oxygen-starved heart pumps against a highly constricted vasculature, which increases left ventricular afterload and decreases left ventricular preload, reducing stroke volume. Long-term elevation in sympathetic neural activity can induce hypertrophy and apoptosis of myocytes, predisposing patients to cardiac arrhythmias.

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  • Anonymous
    1 decade ago
    Favorite Answer

    血氧過少可能藉由不同的神經性賀爾蒙機制,間接影響心臟功能,例如增加交感神經的活動,及引致內皮素-1(一種強力的血管收縮劑)及一氧化氮(一種血管擴張劑)的比例失衡。缺氧的心臟若經高度收縮的血管系統泵出血液,會增加左心室前負荷,及減少左心室後負荷和心搏量。長期升高的交感神經活動可導致心肌細胞肥大及凋亡,使病人容易患上心律不整。

    http://dict.vghtpe.gov.tw/search.php?word=cardiac+...

    http://www.hk-doctor.com/html/dict.php

    http://www3.vghtc.gov.tw:8082/ccrt/pcwp.htm

  • Anonymous
    1 decade ago

    lIndirectly, hypoxemia 也許影響心臟病作用由各種各樣的neurohormonal 機制, 譬如增加的有同情心的活動和配錯在endothelin-1, 一種有力血管收縮劑, 和硝酸氧化物, 血管舒張劑之間。氧氣飢餓的心臟pumps.against 一高度收縮的vasculature, 增加左心室afterload 和減少左心室預壓, 減少行程排量。長期海拔在有同情心的神經系統的活動可能導致myocytes 肥大和apoptosis, 預先處理患者對心率失常。

    ................說實在的,用奇摩翻譯也會出很大的問題。大概是跟身體的病有關吧

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