General Measures

Intravenous access and continued electrocardiographic monitoring should be established in all patients with ACS. Supplemental oxygen may reduce ST-segment elevation in patients with acute myocardial infarction. It is therefore reasonable to provide 2 to 4 L of oxygen routinely by nasal cannula, but higher doses can lead to arterial vasoconstriction and increased afterload. Treatment strategies are those that achieve immediate reperfusion and those that limit infarct size ( Iabie.48-1).

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