Friday, November 12, 2010

10 下列何者與心室顫動(ventricular fibrillation)的成因較無關?
 心臟肥厚(hypertrophy) 心肌缺血(ischemia)
血鉀過高(hyperkalemia) Purkinje system傳導阻滯

answer: is A
fib: think of conduction problems: hypertrophy is the one least affected.

in young people, sudden cardiac death is most often due to cardiomegaly.



9 一位30歲健康男性,在心室收縮末期,左心室仍約留有42 c.c.的血液;在心室舒張末期,左心室亦留有約140 c.c.的血液。其左心室射出分率(ejection fraction)為何?
60% 65% 70% 75%

EF = SV/ EDV
SV = EDV- ESV

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