Publications by authors named "Neeraj Mediratta"

Background: Long-term clinical outcomes of catheter ablation (CA) compared to thoracoscopic surgical ablation (SA) to treat patients with long-standing persistent atrial fibrillation (LSPAF) are not known.

Objective: The purpose of this study was to compare the long-term (36-month) clinical efficacy, quality of life, and cost-effectiveness of SA and CA in LSPAF.

Methods: Participants were followed up for 3 years using implantable loop recorders and questionnaires to assess the change in quality of life.

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We report a case of a 59-year-old male who presented with a persistent cough for a year after being discharged from critical care following a subarachnoid haemorrhage. As part of his initial critical care management and in order to allow full neurological assessment, the patient required a period of prolonged mechanical ventilation, which necessitated a percutaneous tracheostomy. Following recovery and subsequent discharge, the patient presented on multiple occasions with cough, undergoing serial computed tomography (CT) scans which reported mucus plugging as a possible cause of the cough.

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Background: Left ventricular (LV) pseudoaneurysm is a serious and rare complication of myocardial infarction (MI). It occurs when an injured myocardial wall ruptures and is contained by overlying adherent pericardium or scar tissue, most commonly it develops in patients with late presentation of MI and delayed revascularization.

Case Summary: A 64-year-old man presented to the emergency department with intermittent central chest pain radiating to back and neck and increasing on deep inspiration, which was considered to be of musculoskeletal origin for a week, but worsened despite medications.

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Aims: Long-standing persistent atrial fibrillation (LSPAF) is challenging to treat with suboptimal catheter ablation (CA) outcomes. Thoracoscopic surgical ablation (SA) has shown promising efficacy in atrial fibrillation (AF). This multicentre randomized controlled trial tested whether SA was superior to CA as the first interventional strategy in de novo LSPAF.

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Aims: Video-assisted thoracoscopic surgery (VATS) ablation has been advocated as a treatment option for non-paroxysmal atrial fibrillation (AF) in recent guidelines. Real-life data on its safety and efficacy during a centre's early experience are sparse.

Methods And Results: Thirty patients (28 persistent/longstanding persistent AF) underwent standalone VATS ablation for AF by an experienced thoracoscopic surgeon, with the first 20 cases proctored by external surgeons.

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Background: Atrial fibrillation is the commonest arrhythmia which raises the risk of heart failure, thromboembolic stroke, morbidity and death. Pharmacological treatments of this condition are focused on heart rate control, rhythm control and reduction in risk of stroke. Selective ablation of cardiac tissues resulting in isolation of areas causing atrial fibrillation is another treatment strategy which can be delivered by two minimally invasive interventions: percutaneous catheter ablation and thoracoscopic surgical ablation.

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Maintaining sinus rhythm in patients with non-paroxysmal AF is an elusive goal. Some suggest that hybrid ablation, combining minimally invasive epicardial surgical ablation with endocardial catheter ablation, may be more effective than either modality alone. However, randomised trials are lacking.

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Background: Smoking status has not been shown to have a significant effect on 30-day mortality after potentially curative resectional surgery for non-small-cell lung cancer, and this is reflected in the guidelines of the National Institute for Health and Care Excellence in the United Kingdom.

Methods: A validated prospective thoracic surgery database of consecutive patients undergoing potentially curative resection at a single institution was analyzed. Univariate and propensity analyses of 30-day mortality were performed.

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Objectives: To determine if the use of cardiopulmonary bypass is associated with all-cause in-hospital and mid-term survival for patients undergoing left internal mammary artery (LIMA) to left anterior descending (LAD) coronary artery bypass grafting (CABG) for single coronary vessel disease.

Methods: Data from the National Adult Cardiac Surgery Audit registry for all elective and urgent isolated CABG procedures performed between April 2003 and March 2013 in first-time cardiac surgery patients were extracted. Experienced surgeons (those with ≥300 records) were classified by their technique preference (as 'off-pump preference', 'mixed practice', 'on-pump preference') based on their entire isolated CABG data.

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Objectives: The authors investigated whether zero-balance ultrafiltration (Z-BUF) during bypass significantly improves clinical and cost outcomes or biomarkers of kidney injury for patients with preoperative kidney impairment (estimated glomerular filtration rate [eGFR]<60 mL/minute) undergoing cardiac surgery.

Design: A single-center randomized controlled trial recruited, patients between 2010 and 2013, with a 12-months follow-up.

Setting: Hospital.

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Objectives: EuroSCORE II, despite improving on the original EuroSCORE system, has not solved all the calibration and predictability issues. We investigated the sensitivity, specificity and predictability of original EuroSCORE and EuroSCORE II system in elderly patients.

Methods: The original logistic EuroSCORE and EuroSCORE II were assessed via receiver operator characteristic (ROC) and Hosmer-Lemeshow test probability analysis with regard to accuracy of predicting in-hospital mortality.

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Aim: We aimed to determine whether metastatic index is a factor determining long-term survival in patients undergoing curative resection for non-small-cell lung cancer.

Methods: There were 2695 consecutive pulmonary resections performed between October 2001 and September 2011 in our institution; 1795 were potentially curative resections for non-small-cell lung cancer with bronchial margin length data available. Benchmarking against the International Association for the Study of Lung Cancer data set was performed.

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Objectives: To determine in the modern era if cardiopulmonary bypass (CPB) time has a significant effect on postoperative morbidity, mortality and long-term survival in patients undergoing isolated aortic valve replacement (AVR) surgery.

Methods: Analysis of a prospectively collected cardiac surgery database was performed. Uni- and multivariate analysis on the need of resternotomy for bleeding, mediastinal blood loss, intensive care unit (ICU) length of stay, hospital length of stay, in-hospital mortality and long- term survival was performed.

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Background: Pneumonectomy is associated with a higher operative mortality rate and worse 5-year survival after resection for non-small-cell lung cancer, compared to lobectomy. We investigated whether pneumonectomy is an independent risk factor for hospital mortality and poor long-term survival, after risk factor adjustment.

Methods: We analyzed a prospectively validated thoracic surgery database.

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Background: Intestinal ischemia is associated with a very high mortality rate. We combined the principles of Virchow's triad to produce preoperative and postoperative models for the development of intestinal ischemia.

Methods: A single institutional study was undertaken involving 18,325 consecutive patients from April 1997 to March 2012.

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Background: Lobectomy remains the gold standard with regard to potentially curative resection of non-small-cell lung carcinoma. We aimed to investigate whether there is a survival difference in stage 1 non-small-cell lung cancer patients who undergo lobectomy compared to a wedge resection.

Methods: We retrospectively analyzed a prospective database of 1283 patients who had potentially curative resection for stage 1 non-small-cell lung cancer.

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Objectives: Wedge resections are frequently performed for small peripheral lesions in patients unfit for a more extensive resection. We aimed to investigate whether patient sex and histology type are important factors determining survival in patients undergoing a wedge resection for stage I lung cancer.

Methods: We retrospectively analysed a prospective thoracic database of patients (n = 2859) who had undergone potentially curative wedge resection for stage I non-small-cell lung cancer.

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Objectives: We sought to investigate long-term survival of non-smokers undergoing coronary artery bypass surgery (CABG).

Methods: A prospective database of consecutive patients was retrospectively analysed and cross correlated with the UK strategic tracking service to evaluate survival after primary CABG. Univariate, multivariate and a propensity analyses were performed.

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Objectives: To investigate whether valve position, type and procedure are important factors in determining the beneficial effects of statin therapy with regard to long-term survival in patients undergoing isolated single valve surgery.

Methods: A prospective single-institution cardiac surgery database was analysed. Univariate, multivariate stepwise linear, logistic and Cox regression analysis and propensity matching were performed to identify if statins were associated with increased survival post-valve surgery.

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Objectives: Red cell distribution width (RDW) has been identified as an independent risk factor with regard to prognosis in patients with cardiac disease. We sought to investigate the association of RDW in patients undergoing lung resections for non-small-cell lung cancer with respect to in-hospital morbidity, mortality and long-term survival.

Methods: Analysis of consecutive patients on a validated prospective thoracic surgery database was performed for those undergoing potentially curative resections at a single institution.

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Objectives: To determine whether patient sex has a significant effect on long-term outcomes post curative resection of non-small-cell lung cancer.

Methods: We retrospectively analysed a prospectively validated thoracic surgery database (n = 4212), from a single institution, from September 2001 to October 2012. Univariate, Cox multivariate and propensity analysis was performed.

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Objectives: Publications in the surgical literature are very consistent in their conclusions that blood is dangerous with regard to in-hospital mortality, morbidity and long-term survival. Blood is frequently used as a volume expander while simultaneously increasing the haematocrit. We investigated the effects of a single-unit blood transfusion on long-term survival post-cardiac surgery in isolated coronary artery bypass grafting patients.

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Objectives: Using a large, prospectively collected and independently validated thoracic database, we created a risk-prediction tool for in-hospital mortality with the aim of improving on the accuracy of Thoracoscore.

Methods: A prospectively collected and independently validated database containing lung resections was utilized, N = 2574. Logistic regression analysis with bootstrapping, and by the use of a random training and test set was utilized.

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Objectives: The red cell distribution width (RDW) has been identified as an independent risk factor with regard to prognosis in patients with coronary artery disease with or without heart failure. We sought to investigate the role of RDW in patients undergoing isolated coronary artery bypass graft surgery (CABG).

Methods: Analysis of consecutive patients on a validated prospective cardiac surgery database was performed for patients undergoing isolated CABG.

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