Researcher:
Kızılkaya, Mete Han

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Doctor

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Mete Han

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Kızılkaya

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Kızılkaya, Mete Han

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2022 - 20233

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Researcher Of Publications: search.filters.isAuthorOfPublication.b3b411ae-197c-46e2-83c1-08f57240cc77

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    A rare complication after an interventional procedure using the common carotid: carotid pseudoaneurysm in an infant
    (Cambridge University Press (CUP), 2023) N/A; Biçer, Mehmet; Kızılkaya, Mete Han; Ödemiş, Ender; Gündoğmuş, Cemal Aydin; Faculty Member; Doctor; Faculty Member; Doctor; School of Medicine; N/A; School of Medicine; N/A; Koç University Hospital; 310599; N/A; 194545; N/A
    The carotid artery is a valuable vascular access that can be used in patients who have undergone repetitive interventional and surgical procedures and premature babies. In the past, cut-down was used but nowadays, mostly the procedure is performed under ultrasonographic guidance. Complications such as bleeding, haematoma, and pseudoaneurysm may occur when the carotid artery is used as a vascular access for the procedures such as aortic balloon valvuloplasty, coarctation balloon angioplasty, or after interventional or surgical treatments to the carotid artery. Although pseudoaneurysm is very rare, prompt diagnosis and accurate treatment planning are life-saving. In this article, the diagnosis and treatment of pseudoaneurysm in the left common carotid after transcatheter coarctation balloon angioplasty in a 6-month-old infant will be presented.
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    Fontan completion of a 10-year-old Kawashima patient with extensive arteriovenous malformations: consideration for a lobectomy
    (Cambridge University Press (CUP), 2023) N/A; Biçer, Mehmet; Kozan, Şima; Kızılkaya, Mete Han; Faculty Member; Undergraduate Student; Doctor; School of Medicine; School of Medicine; N/A; Koç University Hospital; 310599; N/A; N/A
    A significant contributing factor to the progression of late cyanosis in individuals undergoing Kawashima operation is pulmonary arteriovenous malformations. Following the Fontan procedure, arteriovenous malformations may regress. However, in cases with extensive malformations causing severe cyanosis, lobectomy can also be a possible treatment approach. Thereby, we present our two-step treatment strategy in a late Fontan completion complicated by arteriovenous malformations in a Kawashima patient.
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    Early and mid-term outcomes of transcatheter closure of perimembranous ventricular septal defects using the lifetech (tm) konar-mf occluder device (mfo)
    (Cambridge Univ Press) N/A; N/A; Ödemiş, Ender; Kızılkaya, Mete Han; Faculty Member; Doctor; School of Medicine; N/A; N/A; Koç University Hospital; 194545; N/A
    Background: Transcatheter closure of perimembranous ventricular septal defects is challenging. Double disk-designed devices have high adverse event rates; therefore, research into new devices persists. One such devise is the LifetechTM Konar-MF Occluder device (MFO), which is increasingly used. The purpose of this study is to present mid-term results of MFO for transcatheter closure of patients with perimembraneous ventricular septal defect. Patients and methods: Records of the 52 patients with perimembraneous ventricular septal defect who had undergone transcatheter closure with MFO were reviewed. Demographic, echocardiographic, and procedure details were investigated. Three years follow-up results were recorded. Results: We closed the perimembraneous ventricular septal defect in 51 of 52 patients (98%). The femoral venous approach was used in 27 patients (53 %) whilst no arteriovenous loop was established in the remaining patients. No significant procedure-related complication occurred. On day 1 echocardiography, the residual ventricular septal defect rate was 31%. Mean +/- SD (range) follow-up duration was 36 +/- 7,9 (18-54) months. At 6th month follow-up, only four patients had haemodynamically significant residual defects. No severe dysrhythmia was detected including complete heart block. A right bundle branch block pattern was seen in one patient. Conclusion: This study showed that MFO is a safe and effective device in the transcatheter treatment of perimembraneous ventricular septal defect's with mid-term follow-up.
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    Early results of pulsta (R) transcatheter heart valve in patients with enlarged right ventricular outflow tract and severe pulmonary regurgitation due to transannular patch
    (Cambridge Univ Press, 2022) N/A; N/A; Ödemiş, Ender; Yenidoğan, İrem; Kızılkaya, Mete Han; Faculty Member; Researcher; Doctor; School of Medicine; School of Medicine; N/A; N/A; N/A; Koç University Hospital; 194545; 327591; N/A
    Objective: the purpose of this study is to assess the feasibility, effectivity, and safety of a novel self-expandable valve system, Pulsta (R) transcatheter heart valve in patients with tetralogy of fallot and severe pulmonary regurgitation after transannular patch repair. Background: Severe pulmonary regurgitation after tetralogy of fallot repair is a life-threatening problem and should be treated by pulmonary valve implantation. although percutaneous pulmonary valve implantation has been ever increasingly used for this purpose, Available balloon-expandable valves have limitations and cannot be used by most patients. Pulsta (R) transcatheter heart valve is a new self-expandable valve system and offers a new solution to be used in patients with different types of native right ventricular outflow tract geometry. Patients and Methods: Ten patients with severe regurgitation after tetralogy of fallot repair with a transannular patch have been enrolled in the study according to echocardiographic examination. MRI was used in asymptomatic patients to delineate the indication and the right ventricular outflow tract geometry. Pulsta (R) transcatheter heart valve implantation was performed in ten patients, and preprocedural, procedure, and 6 months follow-up findings of the patients were evaluated. Results: Pulsta (R) pulmonary valve implantation was performed in ten patients successfully without any severe complications. Valve functions were perfect in six of ten patients, while the others had insignificant regurgitation by echocardiographic examination at the end of 6 months follow-up. Conclusions: This study showed that Pulsta (R) transcatheter heart valve is a feasible, effective, and safe method in the treatment of severe pulmonary regurgitation due to transannular patch repair in patients with tetralogy of fallot.