Right ventricular function in ST elevation myocardial infarction: effect of reperfusion

Area of Science:

• Cardiology
• Cardiac Imaging
• Interventional Cardiology

Background:

• ST-elevation myocardial infarction (STEMI) significantly impacts cardiac function.
• Right ventricle (RV) involvement in STEMI can affect patient outcomes.
• Assessing RV function is crucial for understanding STEMI pathophysiology and treatment efficacy.

Purpose of the Study:

• To evaluate right ventricle (RV) function in patients with successfully reperfused STEMI.
• To compare the effectiveness of reperfusion strategies, specifically primary percutaneous coronary intervention (PPCI) versus thrombolytic therapy (TT), on RV function.
• To investigate differences in RV function between anterior and non-anterior STEMI.

Main Methods:

• A cohort of 33 anterior STEMI and 48 non-anterior STEMI patients were studied between January 2007 and August 2008.
• Patients received either PPCI or TT as reperfusion therapy.
• Right ventricle (RV) function was assessed using tissue Doppler imaging (TDI) 72 hours post-reperfusion.

Main Results:

• No significant difference in RV function, measured by RV TDI Tei index, was found between the PPCI and TT groups.
• RV TDI Tei index was significantly increased in anterior STEMI patients (both PPCI and TT groups) compared to controls.
• RV TDI Tei index did not differ between non-anterior STEMI patients (both groups) and controls.

Conclusions:

• Right ventricle (RV) function is impaired in STEMI patients compared to healthy individuals.
• RV dysfunction is present in anterior STEMI but not in non-anterior STEMI, irrespective of reperfusion strategy.
• PPCI and TT demonstrate comparable effects on RV function in STEMI patients.