Can heart attack result in missed or delayed period of perimenopausal woman?

Probably yes: I suspect that the stress can result in disordered or even missed periods but let's see what the gynecologists say about this. (others will answer, i'm sure).

Heart attack: Yes, a heart attack is a stressful event and may lead to a release of a host of compensatory hormones, one of which is cortisol. An imbalance of hormones may lead to a delay or a missed period.