The Journal of thoracic and cardiovascular surgery
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J. Thorac. Cardiovasc. Surg. · Oct 2014
ReviewAre children undergoing cardiac surgery receiving antibiotics at subtherapeutic levels?
Perioperative antibiotics have decreased-but not eradicated-postoperative infections. In patients undergoing cardiac surgery with cardiopulmonary bypass, the dilutional effect of the priming and any additional volume given during the procedure may lead to subtherapeutic antibiotic levels. Our aim was to determine if children undergoing cardiac surgery with cardiopulmonary bypass receive perioperative antibiotics at subtherapeutic levels. ⋯ Our model predicts which patients undergoing cardiac surgery with cardiopulmonary will have subtherapeutic cefuroxime levels. This nomogram enables providers to determine when to administer additional antibiotics in patients receiving large additional volumes during cardiac surgeries. This rational approach to perioperative antibiotic dosing may result in a reduction in postoperative infection in this vulnerable patient population.
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J. Thorac. Cardiovasc. Surg. · Oct 2014
Multicenter StudySuture technique does not affect hemodynamic performance of the small supra-annular Trifecta bioprosthesis.
The study objective was to evaluate whether aortic valve replacement with the Trifecta valve (St Jude Medical Inc, St Paul, Minn) using simple sutures produces better hemodynamic performance than valve replacement with noneverting pledget-reinforced sutures. ⋯ The suture method did not affect hemodynamic performance of supra-annular bioprostheses in patients with small aortic annulus sizes. Choice of suture technique should be determined by surgeon experience and local anatomic features.
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J. Thorac. Cardiovasc. Surg. · Oct 2014
Fontan hemodynamics from 100 patient-specific cardiac magnetic resonance studies: a computational fluid dynamics analysis.
This study sought to quantify average hemodynamic metrics of the Fontan connection as reference for future investigations, compare connection types (intra-atrial vs extracardiac), and identify functional correlates using computational fluid dynamics in a large patient-specific cohort. Fontan hemodynamics, particularly power losses, are hypothesized to vary considerably among patients with a single ventricle and adversely affect systemic hemodynamics and ventricular function if suboptimal. ⋯ Fontan power loss varies from patient to patient, and elevated levels are correlated with lower systemic flow and cardiac index. Fontan connection type does not influence hemodynamic efficiency, but an undersized or stenosed Fontan pathway or pulmonary arteries can be highly dissipative.
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J. Thorac. Cardiovasc. Surg. · Oct 2014
Randomized Controlled TrialCoronary artery bypass in patients with type 2 diabetes: experience from the Bypass Angioplasty Revascularization Investigation 2 Diabetes trial.
Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D) was a study of management strategies for diabetic patients with myocardial ischemia and coronary artery disease. In a 2×2 design, early revascularization versus medical management with or without late revascularization and insulin sensitization versus insulin provision were examined. No advantage for either strategy was seen, except in the group undergoing early coronary artery bypass grafting (CABG). In that group, a reduction in subsequent myocardial infarction was noted. The purpose of our report was to characterize the conduct and short-term outcomes for CABG that led to this result. ⋯ BARI 2D showed that early CABG in patients with type 2 diabetes and myocardial ischemia and multivessel disease reduced the subsequent myocardial infarction rates. The present results have demonstrated that this was achieved using off-pump surgery in certain cases, standard myocardial protection, and routine use of the internal mammary artery or other arterial grafts.
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J. Thorac. Cardiovasc. Surg. · Oct 2014
Multicenter StudySpinal cord ischemia after simultaneous and sequential treatment of multilevel aortic disease.
The aim of the present study is to report a risk analysis for spinal cord injury in a recent cohort of patients with simultaneous and sequential treatment of multilevel aortic disease. ⋯ In our experience, the risk of spinal cord injury is still substantial at 8% in patients with multilevel aortic disease. The distance of the distal landing zone from the celiac trunk is a significant predictor of spinal cord ischemia.