Until now, little was known about the impact on survival of the length of time from first medical contact (usually the emergency medical services) to balloon insertion for patients with ST-segment elevation myocardial infarction (STEMI) in unstable clinical condition . But research published today (Wednesday) in the European Heart Journal  shows that for STEMI patients who have cardiogenic shock (when the heart suddenly can't pump enough blood to meet the body's needs), every ten-minute delay in treatment means there will be an extra 3.3 deaths per 100 patients treated with PCI.
The researchers found a steep increase in deaths the longer it took for patients to receive PCI and that one death in every 12 patients could be prevented when they were treated within the recommended time of less than 90 minutes. A fifth of all patients who received PCI between 150 to 180 minutes after their first contact with a medical professional died.
Research - Patients - STEMI - Type - Heart
The research was carried out in 12,675 patients with STEMI -- the most severe type of heart attack where part of the heart muscle has died due to lack of blood supply -- who used emergency medical services transportation to hospital and were treated with PCI in Germany between 2006 and 2015.
Professor Karl Heinrich Scholz, head of the Department of Cardiology at St Bernward Hospital at Hildesheim (Germany), who led the research, said: "The most important finding of our study is that STEMI patients presenting with cardiogenic shock are more likely to survive if they receive rapid percutaneous coronary intervention. In this high-risk patient group, every ten-minute treatment delay was accompanied by 3.3 additional deaths, and this treatment-delay-related increase in mortality was ten-fold higher as compared to STEMI patients presenting with more stable conditions. This means that, especially in shock patients and in patients with cardiac arrest,...
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