USMLE Cardiac output & LVEDP during first ten seconds of MI

[goodluck4ever]

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Hey guys, was wondering what happens to CO & LVEDP during the first ten seconds of MI (aka as soon as pt experiences chest pain). For some weird reason, I think I saw somewhere that both CO & LVEDP increase during the first ten seconds.

 

[Instatewaiter]

I would think LVEDP starts to rise and CO probably doesn't change much b/c there will be a catecholamine surge but there is ischemia impairing myocardial performance would would essentially balance things out until the ischemia overcomes the catecholamine surge