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Minor myocardial damage and inflammatory response after three different procedures of left anterior descending artery
R De Paulis1, L Colagrande, F Seddio
1Cardiac Surgery Department, Tor Vergata University of Rome.
Insights
Minimally invasive direct coronary artery bypass and percutaneous coronary intervention with stenting show similar minimal myocardial damage. Both surgical approaches had comparable inflammatory responses without significant clinical impact.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Biomarkers of Myocardial Injury
Background:
- Three main revascularization strategies exist for the left anterior descending coronary artery: intracoronary stenting, conventional coronary artery bypass grafting (CABG) with cardiopulmonary bypass, and minimally invasive direct coronary artery bypass (MIDCAB) without cardiopulmonary bypass.
- Evaluating the impact of these procedures on myocardial damage and systemic inflammation is crucial for patient outcomes.
Purpose of the Study:
- To compare the effects of intracoronary stenting, conventional CABG, and MIDCAB on minor myocardial damage.
- To assess the systemic inflammatory response associated with these three revascularization techniques.
Main Methods:
- A prospective study involving 90 patients undergoing left anterior descending coronary artery revascularization, with 30 patients in each group (stenting, conventional CABG, MIDCAB).
- Blood samples were collected preoperatively and at 24, 48, and 72 hours postoperatively.
- Levels of troponin I, creatine kinase (CK), creatine kinase MB fraction (CK-MB), and C-reactive protein (CRP) were measured.
Main Results:
- Postoperative troponin I and CK-MB levels were significantly lower in the PTCA-stent and MIDCAB groups compared to the conventional CABG group (p < 0.0003).
- Total CK and CRP levels were significantly higher in both surgical groups (conventional CABG and MIDCAB) compared to the PTCA-stent group (p = 0.0001).
Conclusions:
- Minimally invasive direct coronary artery bypass surgery and PTCA-stent procedures demonstrate comparable outcomes regarding minimal myocardial damage.
- While surgical interventions (CABG and MIDCAB) show higher levels of skeletal muscle damage and inflammatory markers, these do not appear to have clinical significance.
Background:
Intracoronary stenting, conventional coronary artery bypass with cardiopulmonary bypass and minimally invasive direct coronary artery bypass without extracorporeal circulation are the three accepted options for revascularizing the left anterior descending coronary artery. We compare the effects of these three procedures in terms of minor myocardial damage and systemic inflammatory response.
Methods:
Ninety patients undergoing left anterior descending coronary artery revascularization with these three different techniques (thirty patients per group) were considered. Blood samples were collected preoperatively and immediately postoperatively, and then 24, 48 and 72 hours after the procedures to measure troponin I, creatine kinase, its MB fraction and C-reactive protein levels.
Results:
Postoperative levels of troponin I and MB-creatine kinase were significantly higher in conventional coronary grafting group than in PTCA-stent and in the minimally invasive surgery groups (p < 0.0003), while in both surgery groups there were higher post-operative levels of total creatine kinase and C-reactive protein (p = 0.0001).
Conclusions:
Minimally invasive direct coronary artery bypass surgery and PTCA-stent are similar in terms of virtual absence of minor myocardial damage. Skeletal muscle damage and inflammatory reaction are comparable in surgical patients, but they do not appear to have any clinical relevance.