※ 引述《loyal (靜思)》之銘言：
: p12.說到squatting:會造成周邊阻力增加，所以血液回流增加...
: p.31下面問題1:又說到蹲下的時候，venous return會減少....
: 請問一下，這兩個地方有矛盾的地方嗎????
用途不大一樣，以下是Tetralogy of Fallot的機制
Squatting decreases systemic venous return by trapping blood in the legs,
breaking the overload-hypoxia cycle
Squatting helps to relieve cyanotic spells possibly due to increase in
systemic vascular resistance because of kinking of femoral arteries as well as
in a decrease in the venous return
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