Читать книгу Practical Cardiovascular Medicine - Elias B. Hanna - Страница 133

Improvements in reperfusion therapy have reduced the 30-day mortality of a STEMI patient presenting to the hospital from 15% to 5–6%. Yet, out-of-hospital mortality remains very high, and is responsible for most MI fatalities, mainly in the first hour after MI onset. In fact, the risk of out-of-hospital cardiac arrest in STEMI is ~30%,^132,133 mainly in the first hour after STEMI onset, when over half of all VF episodes occur;¹³⁴ and between hours 1 and 4, where most of the remaining VF events occur.

Conversely, for patients who make it to the hospital without cardiac arrest, the risk of primary VF within 48 hours is ~4%, mostly in the first 4 hours after symptom onset, and the risk of VT and/or VF is ~10%.¹³⁵