急!what factors were mentioned as the possible causes of hypo

那些因素是被提到的,可能造成组织缺氧的原因?
这类复杂句,你要学分拆解来翻译.
首先：the possible causes of hypoxia in the unit 是"可能造成组织缺氧的原因"
然后再译前半部分.这样你看看是不是为比较清楚一点