My brother is having quadruple open-heart bypass surgery tomorrow.?

with blockages of between 95 and 100%. My questions are: 1. Can you direct me to a site which explains the procedure in simple terms 2. What caused it? He's 62, doesn't smoke, was a champion squash player, a little overweight, drinks wine in moderation. 3. Is it heriditary? (My mother died of a heart... show more with blockages of between 95 and 100%. My questions are:
1. Can you direct me to a site which explains the procedure in simple terms
2. What caused it? He's 62, doesn't smoke, was a champion squash player, a little overweight, drinks wine in moderation.
3. Is it heriditary? (My mother died of a heart attack when she was 76)
4. At 48, should I be be having my heart checked?
Update: Thank you all so much for your answers, support and prayers.
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