Publications by authors named "Senay Sahin"

Non-bacterial thrombotic endocarditis is a rare condition characterized by the formation of thrombotic vegetations on heart valve leaflets, leading to valvular dysfunction, heart failure and thromboembolic events. It is known to be associated with other diseases and some cases remain undiagnosed or can be diagnosed in the postmortem analysis. Surgical excision of the mass may be necessary to prevent further embolic events and other complications.

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Article Synopsis
  • The study developed a heart-on-a-chip platform using a single-channel PDMS microchip integrated with a hydrogel scaffold to support cardiomyocyte growth, mimicking human heart conditions.
  • This platform allows for better physiological simulations compared to previous microchip designs by employing 3D cell culture rather than 2D methods to create a more realistic cell microenvironment.
  • The heart-on-a-chip was tested under both normal and low-oxygen conditions to model myocardial ischemia, successfully detecting various biomarkers related to heart conditions, indicating its potential for future biological and clinical applications.
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Robotic-assisted minimally invasive multiple vessel coronary bypass surgery is safe and can be performed with excellent results. In this video tutorial, we present our technique for robotic-assisted minimally invasive multivessel coronary artery bypass grafting, with complete coronary revascularization via a left anterior thoracotomy and guided by preoperative computed tomography.

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Objective: The aim of this study was to investigate the outcomes of robotic mitral valve surgery with and without concomitant tricuspid valve surgery.

Methods: Patients who underwent robotic mitral surgery between March 2010 and September 2022 were included. Patients were grouped according to the presence of concomitant tricuspid interventions.

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Objective: Robot-assisted minimally invasive coronary bypass surgery is one of the least invasive approaches that offers multivessel revascularization and accelerated recovery. We investigated the benefits of computed tomography angiography (CTA) guidance in robotic coronary bypass (RCAB) by analyzing perioperative outcomes.

Methods: Between April 2022 and April 2023, 60 consecutive patients who underwent RCAB under preoperative CTA guidance were included.

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This paper reports on an experimental investigation of thermophysiological and psychological responses during and after an incremental low- to high-intensity exercise at 27 °C and 45% humidity. Five t-shirt garments were produced from different yarn types, their weights and yarn counts were close to each other. During the wear trials, heat and humidity sensors were placed at four body locations (the chest, back, abdomen, and waist).

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Achievement of complete hemostasis is a key element to success in cardiac surgery. Bleeding control is of utmost importance in minimally invasive and robotic cardiac surgery to avoid conversion, as major bleeding is one of the most common indications for conversion to sternotomy. Bleeding control with surgical techniques can be technically more difficult in robotic and minimally invasive cardiac surgery as access to the bleeding area is limited and it is harder to intervene compared with open cardiac surgery with sternotomy.

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Objective: Red blood cell (RBC) transfusion in cardiac surgery is associated with increased morbidity and mortality. Even when using patient blood management methods, blood transfusions may still be needed in cardiac surgery. This study examined the risk factors for blood transfusion in isolated coronary artery bypass graft (CABG) surgery with a restrictive transfusion strategy, along with individualized patient blood management.

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Background: The primary objective of this study was to evaluate the safety and feasibility of robotic-assisted mitral valve surgery without aortic cross-clamping.

Methods: From January 2010 to September 2022, 28 patients underwent robotic-assisted mitral valve surgery without aortic cross-clamping in our center using DaVinci Robotic Systems. Clinical data during the perioperative period and early outcomes of the patients were recorded.

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Background: This study evaluates the clinical outcome of patients with robotic mitral valve replacement (MVR).

Methods: Between January 2010 and April 2022, 117 consecutive patients underwent robotic MVR with or without additional cardiac procedures. All procedures were completed by a single surgical team with Da Vinci Robotic Systems.

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Objective: Postoperative atrial fibrillation is commonly seen after cardiac surgery. One of the contributing factors is mediastinal shed blood and inflammation. Cell salvage techniques can reduce allogenic blood transfusion and reduce inflammation.

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The prosthetic paravalvular leak is a rare but important complication following mitral valve replacement. Determining the location of the leak is almost always dependent on perioperative transoesophageal echocardiography and the considerable expertise of echo operators. Acoustic shadowing due to the prosthetic valve may create another important difficulty.

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These evidence-based guidelines from the Turkish Society of Cardiovascular Surgery, National Society of Vascular and Endovascular Surgery, and Phlebology Society intend to support clinicians in best decisions regarding the treatment of venous thromboembolism (VTE). The Editor was selected by the three national societies and was tasked with the recruitment of the recognized panel. All financial support was solely derived from the sponsoring societies without the direct involvement of industry or other external stakeholders.

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Background: In this study, we aimed to evaluate early and longterm outcomes of both isolated or concomitant coronary artery bypass grafting with the endoscopic vein harvesting technique.

Methods: Between November 2012 and May 2017, a total of 324 patients (259 males, 65 females; mean age: 63.2±9.

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Introduction: There are several approaches for pericardiocentesis. However, there is no definite suggestion about puncture location after cardiac surgery. The purpose of this study is to examine whether there is any difference regarding puncture location during pericardiocentesis in postoperative cardiac tamponade comparing to nonsurgical cardiac tamponade.

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Hypertrophic obstructive cardiomyopathy requires surgical myectomy when heart failure symptoms persist despite best medical therapy. Minimally invasive myectomy with robotic surgery can be performed in experienced centers, allowing for surgical correction of accompanying mitral valve pathologies. The extent of myectomy is important to relieve left ventricular outflow tract obstruction while care should be taken to prevent iatrogenic ventricular septal defects or heart blocks caused by excessive removal of septal tissue.

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Introduction: Robotic valve surgery utilizes the femoral vessels to set up cardiopulmonary bypass (CPB) which translates to groin wound and lower extremity vascular complications. A less invasive technique is a totally percutaneous bypass using vascular closure devices (VCDs) with concerns for lower limb ischemia and arterial stenosis. Since April 2018, we have adopted the standard use of total percutaneous CPB in our robotic mitral cases.

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Introduction: Robotic cardiac surgery offers mitigated risks for obese patients requiring mitral valve surgery. We aimed to study the safety of robotic mitral surgery in the obese patient population by analyzing the outcomes of mitral surgery patients in our center for robotic cardiac surgery.

Method: This study retrospectively included 123 consecutive patients who underwent robotic mitral valve operations in a single center for robotic cardiac surgery.

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Background Context: Vertebral body tethering (VBT), a flexible compression-based growth modulation technique, was claimed to prevent disc degeneration due to its less rigid nature compared to other growth-friendly techniques. Yet, the consequences of VBT surgery on discs and facet joints have not been precisely acknowledged.

Purpose: The purpose of this study was to determine the changes in the intermediate and adjacent levels at least 2 years after surgery.

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Background: Many cardiac surgeons receive training for sternotomy-based cardiac surgical operations in residency programs and only a few education programs offer training specifically in minimally invasive cardiac surgery. In this report, we aimed to search and analyze the learning curve for robotic-assisted mitral valve (MV) repair in cardiac surgeons.

Method: Between January 2010 and July 2019, 60 robotic-assisted isolated MV repair surgeries were performed with DaVinci Robotic Systems in our center.

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Background And Aim: Attempting to place an aortic cross-clamp may complicate surgery and postoperative outcomes in patients who have mediastinal adhesions or in those with extensive aortic calcification. Although right-sided cardiac surgery via thoracotomy is not a new technique in these patients, robotic-assisted intracardiac repair without cross-clamping was not reported in a large group of patients previously. In this study, the safety of robotic-assisted cardiac surgery without aortic cross-clamping was examined.

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Background: The feasibility, safety and advantages of minimally invasive or robotic repair of atrial septal defect (ASD) in adults were reported previously. However, there is limited data for the application of these systems in paediatric patients. Although current robotic systems still have large instruments for surgical repair in children, some appropriate patients may benefit from this technology.

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