Non-STEMI vs. STEMI Cardiogenic Shock: Clinical Profile and Long-Term Outcomes
María José Martínez, Ferran Rueda, Carlos Labata, Teresa Oliveras, Santiago Montero, Marc Ferrer, Nabil El Ouaddi, Jordi Serra, Josep Lupón, Antoni Bayés‐Genís, Cosme García‐García
Abstract
Cardiogenic shock (CS) is a severe complication of acute myocardial infarction (AMI). In AMI-CS, the ST segment deviation on ECG may be elevated (STEMI-CS) or non-elevated (NSTEMI-CS), which may influence prognosis. Our aim was to analyze the clinical profile, acute-phase prognosis, and long-term outcomes of CS relative to the ST pattern on admission. In a prospective registry of 4647 AMI patients admitted to the intensive cardiac care unit of a university hospital between 2010 and 2019, we compared the clinical characteristics, 30-days case fatality, and long-term outcomes of AMI-CS, based on the presence of ST-segment deviation. AMI-CS developed in 239 (5.1%) patients (26.4% women): 190 (79.5%) STEMI-CS and 49 (20.5%) NSTEMI-CS. The mean age was 69.7 years. The STEMI-CS patients had larger infarcts and more mechanical complications than the NSTEMI-CS patients. The NSTEMI-CS patients had a greater prevalence of hypertension, diabetes, peripheral vascular disease, previous cardiovascular comorbidities, three-vessel disease, and left main disease than the STEMI-CS patients. The STEMI-CS patients had higher 30-day mortality than the NSTEMI-CS (59.5% vs. 36.7%; p = 0.004), even after multivariable adjustment (HR 1.91; 95% CI 1.16–3.14), but no differences in mortality were observed at 3 years. In conclusion, the 30-day case-fatality is higher in STEMI-CS, but the long-term outcome is similar in both groups.