In-hospital mortality after acute STEMI in patients undergoing primary PCI.

Area of Science:

• Cardiology
• Interventional Cardiology
• Clinical Research

Background:

• Acute myocardial infarction (AMI) is a leading cause of mortality globally.
• ST-segment elevation myocardial infarction (STEMI) requires prompt intervention.
• Primary percutaneous coronary intervention (pPCI) is a standard treatment for STEMI.

Purpose of the Study:

• To investigate the association between the specific coronary artery involved and in-hospital mortality in STEMI patients treated with pPCI.
• To identify novel risk factors for mortality in this patient cohort.

Main Methods:

• Retrospective analysis of 312 STEMI patients undergoing pPCI between 2013 and 2017.
• Assessment of in-hospital mortality and its correlation with demographic, clinical, and angiographic factors.
• Study conducted at a single center without immediate access to mechanical circulatory support (MCS).

Main Results:

• In-hospital mortality was 10% (31 patients).
• Mortality was associated with pre-hospital cardiopulmonary resuscitation (CPR), older age, lower systolic blood pressure, higher Killip class, triple-vessel disease, female gender, and culprit lesions in the left main coronary artery (LMCA) and ramus circumflexus (RCX).
• LMCA and RCX culprit lesions showed a significant association with in-hospital mortality (p=0.0083 and p=0.0141, respectively).

Conclusions:

• Culprit lesions in the LMCA and RCX are associated with significantly higher in-hospital mortality in STEMI patients after pPCI.
• These findings suggest LMCA and RCX involvement may represent novel risk factors for STEMI-related mortality.
• The study underscores the importance of considering MCS availability in pPCI centers, especially for patients requiring CPR.