Aykun Hakgor

Dr. Aykun Hakgor

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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1 January 2023 in The Anatolian Journal of Cardiology
Verified
Journal Article
Open access
CKCihangir Kaymaz
Cihangir Kaymaz
HTHacer Ceren Tokgöz
Hacer Ceren Tokgöz
BKBarkın Kültürsay
Barkın Kültürsay
AHAykun Hakgor
Aykun Hakgor
BKBerhan Keskin
Berhan Keskin
AKAli Karagoz
Ali Karagoz
In this review, the current status of the worldwide experience on different catheter-directed treatment systems utilized as alternative reperfusion methods in acute ­pulmonary embolism was evaluated, and the risk stratification algorithms in which ­catheter-directed treatments may be implemented, source of evidence in this ­setting, adjudication of benefits and risks of available techniques, and innovative multi-­disciplinary frameworks for referral patterns and care delivery were discussed. Moreover, our perspectives on risk-based catheter-directed treatment utilization strategies in acute pulmonary embolism were summarized.

1 January 2024 in The Anatolian Journal of Cardiology
Verified
Journal Article
Open access
PDF file
BKBarkın Kültürsay
Barkın Kültürsay
BKBerhan Keskin
Berhan Keskin
SÜSeda TANYERİ ÜZEL
Seda TANYERİ ÜZEL
ŞKŞeyhmus Külahçıoğlu
Şeyhmus Külahçıoğlu
AHAykun Hakgor
Aykun Hakgor
CKCihangir Kaymaz
Cihangir Kaymaz
Background: Currently available risk stratification models for acute pulmonary embolism (PE) include hemodynamic status, cardiac biomarkers, right ventricle (RV) dysfunction on imaging, and clinical scores. Focusing on the length–tension relationship of the ventricle might have a superior predictive capability over RV dysfunction in terms of mortality and classification of patients with acute PE. In this study, our hypothesis suggests that the tricuspid annular plane systolic excursion (TAPSE)/systolic pulmonary artery pressure (sPAP) ratio has superior predictive capability for in-hospital mortality in patients with acute PE compared to TAPSE or sPAP as distinct measures. Materials and Methods: This single-center study comprised retrospectively evaluated 703 patients referred to our tertiary cardiovascular center with acute PE. We divided patients into quartiles based on the TAPSE/sPAP ratio. Different models were developed to quantify the predictive relationship between in-hospital death and echocardiographic measurements. A base model was created with variables including risk status and RV/LV ratio >1. Then, to evaluate the predictive contribution of each measurement; TAPSE/sPAP, TAPSE, and sPAP were sequentially added to the base model. After that, the performance of each model was evaluated. Results: Predictive and discriminative power was the highest in model containing TAPSE/sPAP. There was still a significant inverse association between TAPSE/sPAP and the risk of in-hospital death even after adjusting for risk status and RV/LV ratio >1. Receiver operating characteristic curve analysis for TAPSE/sPAP revealed the best cut-off value as 0.34. Conclusion: The outcomes of our study reveal that the ratio of TAPSE/sPAP serves as a more potent predictor of mortality than either of the 2 measurements taken separately. The interpretation and utilization of the TAPSE/sPAP cut-off value in acute PE can assist in identifying patients at risk of deterioration and guide the consideration of more intensive treatment options across all risk groups.

20 May 2024 in Journal of Cardiovascular Medicine
Verified
Journal Article
Closed access
AHAykun Hakgor
Aykun Hakgor
ADAtakan Dursun
Atakan Dursun
BKBasak Catalbas Kahraman
Basak Catalbas Kahraman
AYArzu Yazar
Arzu Yazar
USUmeyir Savur
Umeyir Savur
BSBusra Guvendi Sengor
Busra Guvendi Sengor
Background: Preoperative systemic inflammation and nutritional status have been shown to affect prognosis in patients undergoing transcatheter aortic valve implantation (TAVI). In this study, we investigated the effect of the Naples Prognostic Score (NPS), which consists of four different parameters including these two components on short- and long-term prognosis in patients undergoing TAVI. Methods: In 343 patients (mean age 78.1 ± 8.4 years, 51.3% female) who underwent TAVI, the NPS score was calculated from the blood tests obtained before the procedure and the study population was divided into three according to the NPS value: those with 0 and 1 were divided into Group-1, those with 2 into Group-2, and those with 3 and 4 into Group-3. The relationship between NPS group and in-hospital adverse events and long-term survival was evaluated. Results: Systolic pulmonary artery pressure, STS score, presence of chronic lung disease and being in NPS Group-3 [adjusted odds ratio (adjOR): 3.93, 95% confidence interval (CI) (1.02–15.17), P = 0.047] were found to be independent predictors of in-hospital mortality. According to the multivariate Cox-regression model, both Group-2 NPS [adjusted hazard ratio (adjHR): 4.81, 95% CI (1.09–21.14), P = 0.037] and Group-3 NPS [adjHR: 10.1, 95% CI (2.31–43.36), P = 0.002] was an independent predictor of 2-year all-cause mortality after TAVI. There was no significant difference in perioperative adverse events between the groups except for postprocedural acute kidney injury. According to receiver-operating characteristic analysis, the optimal predictive value of NPS for in-hospital and long-term mortality was 2.5. Conclusion: In patients who will be candidates for TAVI, NPS is a simple and effective tool for determining both short- and long-term prognosis.

17 June 2025 in Journal of the American Heart Association
Verified
Journal Article
Open access
FUFatih Uzun
Fatih Uzun
AGAhmet Güner
Ahmet Güner
AHAykun Hakgor
Aykun Hakgor
EAElnur Alizade
Elnur Alizade
MKMehmet Baran Karatas
Mehmet Baran Karatas
BBBilal Boztosun
Bilal Boztosun
Background: The comparison of outcomes of mini‐crush (MCT) versus double kissing crush (DKC) techniques for complex left main bifurcation (LMB) lesions is still lacking. This investigation aimed to assess the long‐term outcomes of patients who underwent MCT or DKC for LMB disease. Methods: From 2014 to 2024, patients who underwent percutaneous coronary intervention for complex LMB lesions were retrospectively collected. The primary end point was major adverse cardiac events as the combination of cardiac death, target vessel myocardial infarction, or clinically driven target lesion revascularization during follow‐up. The secondary end point was measured as major adverse cardiovascular and cerebral events including all‐cause death, target vessel revascularization, target vessel myocardial infarction, stent thrombosis, and stroke. Results: This large‐scale multicenter (n=13) observational study included a total of 531 consecutive patients (men: 405 [76.3%], mean age: 63.16±11.26 years) with complex LMB lesions who underwent percutaneous coronary intervention. The initial revascularization strategy was MCT in 313 (59%) patients and DKC in 218 (41%) patients. The number of balloons used (5.91±1.53 versus 6.72±1.70, P <0.001) and procedure time (66.60±24.20 versus 72.97±19.97 minutes, P <0.001) were notably lower in the MCT group. In the overall population, the long‐term major adverse cardiac events (hazard ratio [HR], 0.704; P =0.169) and major adverse cardiovascular and cerebral events (HR, 0.660; P =0.079) did not differ in individuals with complex LMB lesions treated with MCT and DKC. Other end points were also comparable between the 2 groups. Conclusions: In complex LMB lesions, risk‐adjusted major adverse cardiac events and major adverse cardiovascular and cerebral events rates were comparable between both techniques, with a nonsignificant trend favoring DKC at long‐term follow‐up. Registration: URL: https://www.clinicaltrials.gov ; Unique Identifier: NCT06546748.

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.

21 January 2020 in Herz
Verified
Journal Article
Closed access
PDF file
RAREZZAN DENİZ ACAR
REZZAN DENİZ ACAR
SENCAN ACARSENCAN ACAR
SENCAN ACAR
CDCem Doğan
Cem Doğan
ZBZübeyde Bayram
Zübeyde Bayram
AKAhmet Karaduman
Ahmet Karaduman
NÖNihal Özdemir
Nihal Özdemir