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Postconditioning with Lactate-enriched Blood for Cardioprotection in ST-segment Elevation Myocardial Infarction
Published on: May 28, 2019
Conservative pharmacotherapy vs. staged percutaneous coronary intervention for non-culprit vessels in patients with
Bo Zhao1, Jianjun Peng1, Lihui Ren1
1Department of Cardiology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, P.R. China.
Insights
Staged percutaneous coronary intervention (SPCI) for non-culprit vessels in ST-segment elevation myocardial infarction (STEMI) patients led to better outcomes than conservative pharmacotherapy (CP). SPCI reduced major adverse cardiovascular events and recurrent myocardial infarction compared to CP.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiovascular Medicine
Background:
- ST-segment elevation myocardial infarction (STEMI) often involves multi-vessel disease requiring treatment decisions for non-culprit lesions.
- Conservative pharmacotherapy (CP) and staged percutaneous coronary intervention (SPCI) are management options for these lesions.
- Optimal strategy for non-culprit vessels post-STEMI PCI remains an area of active research.
Purpose of the Study:
- To compare the clinical outcomes of conservative pharmacotherapy (CP) versus staged percutaneous coronary intervention (SPCI) in managing significant non-culprit vessels in STEMI patients.
- To evaluate the rates of major adverse cardiovascular events (MACE), recurrent myocardial infarction, and recurrent angina pectoris.
- To assess MACE-free survival rates between the two treatment strategies.
Main Methods:
- A study involving 266 male and 40 female STEMI patients who underwent successful primary PCI.
- Patients were divided into two groups: complete revascularization (CR) via SPCI of non-culprit vessels, and CP.
- Follow-up data collected at 180 and 360 days to compare clinical endpoints.
Main Results:
- The conservative pharmacotherapy (CP) group exhibited a significantly higher rate of major adverse cardiovascular events (MACE) at 360 days (12.7% vs. 6.1%, P=0.05).
- Recurrent myocardial infarction rates were higher in the CP group (10.1% vs. 4.1%, P=0.04).
- Recurrent angina pectoris was significantly more frequent in the CP group at both 180 (13.9% vs. 5.4%, P=0.012) and 360 days (18.4% vs. 8.1%, P=0.009).
- MACE-free survival at 360 days was significantly better in the complete revascularization (CR) group (93.9% vs. 87.3%, P<0.05).
Conclusions:
- Staged percutaneous coronary intervention (SPCI) of non-culprit vessels in STEMI patients is associated with superior clinical outcomes compared to conservative pharmacotherapy (CP).
- Complete revascularization through SPCI demonstrates a significant reduction in MACE and recurrent ischemic events.
- These findings support SPCI as a preferred strategy for managing significant non-culprit lesions in STEMI patients.
Abstract:
The present study aimed to compare the effect of conservative pharmacotherapy (CP) and staged percutaneous coronary intervention (SPCI) on significant non-culprit vessels in patients with ST-segment elevation myocardial infarction (STEMI). A total of 266 male and 40 female patients were divided into two groups following their first successful PCI treatment: i) Patients in the complete revascularization (CR) group undergoing SPCI; and ii) patients in the CP group undergoing CP. Follow-up data were collected at 180 or 360 days after surgery to compare the rates of major adverse cardiovascular events (MACE), recurrent myocardial infarction, recurrent angina pectoris and MACE-free survival rates between the two groups. The rate of MACE in the CP group was higher compared with that in the CR group at the 360-day follow-up (6.1 vs. 12.7%; P=0.05), and the same was reflected in the rate of recurrent myocardial infarction (10.1 vs. 4.1%; P=0.04). The rate of recurrent angina pectoris in the CP group was significantly higher compared with that in CR group at the 180-day (13.9 vs. 5.4%; P=0.012) and 360-day follow-up (18.4 vs. 8.1%; P=0.009). The MACE-free survival rate of patients was significantly higher in the CR group compared with that in the CP group at the 360-day follow-up (93.9% vs. 87.3%, P<0.05). In conclusion, the SPCI of non-culprit vessels in patients with STEMI is associated with better clinical outcomes than CP.
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