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The time from hospital arrival to PCI (door-to-balloon time) is an important determinant of benefit, with the best outcomes occurring when the time to PCI is 90 minutes or less.
Patients who are transferred to a PCI center have better outcomes than those treated with fibrinolysis at the presenting hospital if PPCI is delivered according to guideline standards. Most of the benefit in these trials is due to a lower rate of reinfarction after PCI, which is unrelated to the time required for transfer. | 
