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Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
Contemporary evidence for intravascular imaging-guided percutaneous coronary intervention: a systematic review and
Nora N Almouaalamy1,2, Hasen H Aljadani1,2, Ruqayyah A Ahmed3
1King Abdullah International Medical Research Centre.
Insights
Intravascular imaging guidance for percutaneous coronary intervention (PCI) significantly reduces risks of death, myocardial infarction, and stent thrombosis compared to traditional methods. This supports wider use of intravascular ultrasound (IVUS) and optical coherence tomography (OCT) in PCI procedures.
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Imaging
Background:
- Coronary artery disease (CAD) is a major global health concern.
- Percutaneous coronary intervention (PCI) is a common treatment for CAD.
- Comparing guidance strategies for PCI is crucial for optimizing patient outcomes.
Purpose of the Study:
- To compare clinical outcomes of intravascular imaging-guided PCI versus angiography or fractional flow reserve (FFR)-guided PCI.
- To evaluate the efficacy of intravascular ultrasound (IVUS) and optical coherence tomography (OCT) in guiding PCI.
- To assess the impact of different PCI guidance methods on major adverse cardiac events.
Main Methods:
- Systematic search of six databases for randomized controlled trials (RCTs) up to October 2024.
- Included RCTs compared IVUS/OCT-guided PCI with angiography/FFR-guided PCI.
- Pooled risk ratios (RRs) using a random-effects model for primary outcomes including target-vessel failure (TVF), myocardial infarction (MI), mortality, and stent thrombosis.
Main Results:
- Analysis of 18 RCTs with 21,812 patients.
- Imaging-guided PCI showed significantly lower risks of TVF (RR: 0.66), cardiac death (RR: 0.56), all-cause mortality (RR: 0.77), MI (RR: 0.84), and definite stent thrombosis (RR: 0.41).
- No significant differences were found for repeat revascularization or contrast-induced nephropathy.
Conclusions:
- Intravascular imaging-guided PCI significantly improves key clinical outcomes compared to angiography or FFR guidance.
- Findings support the broader implementation of IVUS and OCT in contemporary PCI.
- These imaging modalities are particularly beneficial for patients with complex coronary disease.
Background:
Coronary artery disease (CAD) remains a leading cause of global morbidity and mortality. This meta-analysis aimed to compare clinical outcomes of intravascular imaging-guided percutaneous coronary intervention (PCI) versus angiography - or fractional flow reserve (FFR)-guided PCI.
Methods:
We systematically searched six databases through October 2024 for randomized controlled trials (RCTs) comparing intravascular ultrasound (IVUS)-guided or optical coherence tomography (OCT)-guided PCI versus angiography-guided or FFR-guided PCI. Primary outcomes included target-vessel failure (TVF), myocardial infarction (MI), mortality, stent thrombosis, repeat revascularization, and contrast-induced nephropathy. Risk ratios (RRs) were pooled using a random-effects model.
Results:
Eighteen RCTs including 21 812 patients (11 215 imaging-guided; 10 597 angiography/FFR-guided) were analyzed. Imaging-guided PCI was associated with lower risks of TVF (RR: 0.66; 95% CI: 0.58-0.74), cardiac death (RR: 0.56; 95% CI: 0.44-0.71), all-cause mortality (RR: 0.77; 95% CI: 0.64-0.93), MI (RR: 0.84; 95% CI: 0.71-0.99), and definite stent thrombosis (RR: 0.41; 95% CI: 0.27-0.62). No significant differences were observed in repeat revascularization (RR: 0.99; 95% CI: 0.75-1.31) or contrast-induced nephropathy (RR: 1.08; 95% CI: 0.64-1.83). Although relative risk reductions were significant, absolute event rates were low, resulting in modest absolute risk reductions.
Conclusion:
Intravascular imaging-guided PCI significantly improves key clinical outcomes, including mortality, MI, and stent thrombosis, compared with angiography-guided or FFR-guided PCI. These findings support broader implementation of IVUS and OCT in contemporary PCI, especially in patients with complex coronary disease.
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