Interactive cardiovascular and thoracic surgery
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Interact Cardiovasc Thorac Surg · Jun 2010
Comparative StudyAortic root distensibility and cross-sectional areas in stented and subcoronary stentless bioprostheses in pigs.
A flexible aortic root is essential for natural leaflet stress distribution. It is suggested that stentless bioprosthetic valves retain the flexibility of native valves. We investigated aortic root distensibility and cross-sectional area (CSA) in stentless (Solo, n=4; Toronto SPV, n=7), stented (Mitroflow, n=8) and in native valves (n=8) in pigs. ⋯ In conclusion, the Solo valve had a larger CSA at the annulus than both the Mitroflow and the Toronto SPV. However, the stentless valves had a smaller CSA at the sino-tubular junction than the Mitroflow. We, furthermore, found that implantation of stentless heart valves preserves aortic root distensibility at the annular level in pigs.
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Interact Cardiovasc Thorac Surg · Jun 2010
Clinical value of F18-fluorodeoxyglucose positron emission tomography-computed tomography in patients with non-small cell lung cancer after potentially curative surgery: experience with 241 patients.
F18-fluorodeoxyglucose positron emission tomography-computed tomography (FDG-PET/CT), which allows differentiation between malignant and benign lesions based on difference in tissue glucose metabolism, has become increasingly important in lung cancer diagnosis. This study examined the clinical value of FDG-PET/CT in a large number of patients with non-small cell lung cancer (NSCLC) after potentially curative surgery. ⋯ The present study demonstrated the high diagnostic performance of FDG-PET/CT in detecting recurrences in a large group of patients with NSCLC after potentially curative surgery. FDG-PET/CT is useful not only for diagnosis of recurrence but also for detection of other diseases.
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Interact Cardiovasc Thorac Surg · Jun 2010
Comparative StudyShort-term outcome following cardiac surgery--a comparison between consultant and trainees' performance.
Comparison of the outcome of cardiac operations performed by surgical trainees with those performed by consultant surgeons has been an interesting topic in recent years. We set out to examine the outcome of a high volume-training firm. Cardiac operations performed by surgical trainees and a consultant between January 2006 and March 2009 were studied. ⋯ Mortality for CABG in consultant and surgical trainees groups was six (1.7%) and six (4.2%), respectively (P=NS). There was no significant difference in morbidity outcome measures comparing the two groups. The non-significant higher overall mortality in operations performed by trainees in a fully supervised setting, may reflect the influence of experience and confidence, which are difficult to measure.
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Interact Cardiovasc Thorac Surg · Jun 2010
Risk and protective factors for major complications after pneumonectomy for lung cancer.
Pneumonectomy carries a high-risk for postoperative complications. The aim of the study was to identify factors that may predispose to the development of major postoperative complications after pneumonectomy for lung cancer. All consecutive patients from January 2000 to December 2005 were retrospectively studied. ⋯ Preoperative haemoglobin > or =10 g/dl (OR, 0.19; 95% CI, 0.01-0.91) and low tidal volume administrated during surgery (< or =7.35 ml/kg; OR, 0.36; 95% CI, 0.10-0.92) were identified as protective factors. Pneumonectomy remains a high-risk surgery. Postoperative complications may be influenced by the comorbidities but also the management of fluid infusion and mechanical ventilation during the surgical procedure.
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Interact Cardiovasc Thorac Surg · Jun 2010
Correlation of computed tomography densitometry and pathological grading of emphysema with the variation of respiratory function after lobectomy for lung cancer.
The presence of emphysema may lead to an underestimation of postoperative respiratory function after lobectomy when evaluated by standard functional assessment. The aim of the study was to assess the correlation between computed tomography (CT) densitometry, pathological grading of emphysema and variation of pulmonary function after lobectomy for lung cancer. Forty-one patients entered the study. ⋯ Pathological grading of emphysema of the resected lobe (range 0-10) was 4.1+/-2.2 in Group A and 3.1+/-1.2 in Group B. A significant correlation was observed (Spearman rank correlation) between the variation of FEV(1) and preoperative FEV(1) (P=0.003; r=-0.455), CT quantitative assessment (P=0.036; r=-0.430) and pathological grading (P=0.008; r=0.673). Patients with a higher degree of emphysema had a lower reduction of respiratory function after lobectomy and CT densitometry and pathological grading of emphysema correlated with the variation in respiratory function.