PCI for Chronic Total Occlusions with Distal Diffuse Disease: Stent Alone vs. Stent plus Drug Balloon
Bibliographic record
Abstract
Background: Chronic total occlusion (CTO) of coronary arteries is a significant challenge in percutaneous coronary intervention (PCI). Despite successful revascularization, patients often develop diffuse coronary lesions, increasing the risk of restenosis and necessitating complex stent strategies. Objective: This study aimed to compare the clinical outcomes of drug-eluting stents (DES) combined with drug-coated balloon (DCB) angioplasty versus DES-only treatment in patients with revascularized CTO and diffuse coronary artery disease. Methods: Patients with successfully revascularized CTO and diffuse lesions were divided into DES-only (n = 191) and DES plus DCB (n = 100) groups. The primary endpoint was major adverse cardiovascular events (MACE), including all-cause death, cardiac death, stroke, and revascularization. The secondary endpoint was the rate of cardiovascular-related hospitalization. Symptom improvement was evaluated using the Canadian Cardiovascular Society (CCS) classification. Results: At 24-month follow-up, the DES plus DCB group had significantly lower MACE incidence (26.00 % vs. 41.36 %, P = 0.008) and cardiovascular-related hospitalization (20.00 % vs. 36.65 %, P = 0.005) compared to the DES-only group. CCS classification improved more significantly in the DES plus DCB group (P < 0.001). Multivariate Cox regression identified DES plus DCB as an independent protective factor against MACE (HR, 0.57; 95 % CI, 0.33-0.99; P = 0.046). Conclusion: In patients with revascularized CTO and diffuse coronary artery disease, the combined DES plus DCB strategy was associated with a lower incidence of MACE and reduced cardiovascular-related hospitalization compared to DES-only treatment. This approach may represent a superior therapeutic option for managing complex coronary lesions.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".