Melike Zeynep Dursun

Dr. Melike Zeynep Dursun

orcid

Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2025 in Journal of Cardiovascular Pharmacology
Verified
Journal Article
Closed access
AHAykun Hakgor
Aykun Hakgor
FOFatih Erkam Olgun
Fatih Erkam Olgun
ADAtakan Dursun
Atakan Dursun
BKBasak Catalbas Kahraman
Basak Catalbas Kahraman
AAAysel Akhundova
Aysel Akhundova
FKFethi Kilicaslan
Fethi Kilicaslan
Although sodium–glucose cotransporter 2 inhibitors (SGLT2i) are known to reduce the incidence of atrial fibrillation (AF) and AF-related adverse events, evidence on their prognostic effect in patients undergoing catheter ablation (CA) for AF is limited. In a single center, 614 patients (mean age 58.1 ± 9.9 years, 42.2% female) who underwent CA for AF were retrospectively divided into 2 groups according to SGLT2i treatment after the index procedure and followed up for 24 months. The primary outcome of the study was AF recurrence after the first 90-day blanking period after CA. Two separate Cox regression models were constructed to determine the predictors of AF recurrence. Rates of the primary outcome were 19.4% and 35.7% in the SGLT2i and non-SGLT2i groups, respectively. According to the multivariable model 1, which was established among the clinically relevant variables that were found to be statistically significant in univariable analysis, left atrial diameter (adjusted HR: 1.087, 95% CI, 1.054–1.122, P < 0.001), SGLT2i therapy (adjusted HR: 0.436, 95% CI, 0.286–0.665, P < 0.001), and nonparoxysmal AF (adjusted HR: 1.549, 95% CI, 1.039–2.309, P = 0.032) were independent predictors of recurrence after ablation. In model 2, SGLT2i treatment remained an independent predictor of AF recurrence along with significant variables such as age, heart failure with reduced ejection fraction, and previous stroke (adjusted HR: 0.315, 95% CI, 0.214–0.461, P < 0.001). The favorable efficacy of SGLT2i on the primary outcome was maintained in subgroup analyses. SGLT2i treatment is associated with lower recurrence after CA for AF in subgroups with and without diabetes or heart failure with reduced ejection fraction and in the overall patient population, independent of AF phenotype.

10 October 2026 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
ZGZAFER GÜVEN
ZAFER GÜVEN
HAHidayet Ozan ARABACI
Hidayet Ozan ARABACI
HYHakan Yalman
Hakan Yalman
MDMelike Zeynep Dursun
Melike Zeynep Dursun
IKIbrahim Oguz Karaca
Ibrahim Oguz Karaca
Background: Optimal stenting for distal unprotected left main coronary artery (LMCA) bifurcation disease remains uncertain. We evaluated long-term outcomes by initially intended strategy. Methods: This retrospective, single-centre cohort included 234 consecutive patients undergoing percutaneous coronary intervention (PCI) without acute coronary syndrome, classified by intended strategy irrespective of crossover. Cox models for all-cause mortality were adjusted for strategy, age, left ventricular ejection fraction, SYNTAX score, and diabetes, with anatomical and propensity-score sensitivity analyses. Secondary and subgroup analyses were exploratory. Results: Provisional and upfront two-stent strategies were intended in 145 and 89 patients. Two-stent patients had greater anatomical complexity. During median 49-month follow-up, mortality did not differ significantly (two-stent versus provisional: 16.9% versus 21.4%; p = 0.499; adjusted hazard ratio, 0.83; 95% confidence interval, 0.43–1.60; p = 0.579), with consistent sensitivity analyses. Older age, lower ejection fraction, and higher SYNTAX score were associated with mortality. Target-lesion revascularisation (7.8% versus 2.1%; p = 0.033) and in-hospital stroke (5.6% versus 0.7%; p = 0.031) were more frequent with intended two-stent PCI; other secondary outcomes did not differ significantly. Exploratory unadjusted comparisons showed lower target-lesion and target-vessel revascularisation with double-kissing crush (n = 74) versus conventional culotte (n = 15), limited by small samples and selection bias. Intravascular ultrasound was associated with lower mortality in exploratory adjusted analyses. Mortality was numerically lower with elective intra-aortic balloon pump support at ejection fraction ≤40%, without statistical significance. Conclusions: No, statistically significant association between initially intended bifurcation strategy and long-term all-cause mortality was observed. Limited precision precludes an inference of equivalence, and exploratory differences in target-lesion revascularisation and in-hospital stroke warrant caution. These findings provide a long-term real-world perspective on individualised distal LMCA PCI, integrating lesion complexity, ventricular reserve, procedural technique, and intravascular imaging.