The Journal of thoracic and cardiovascular surgery
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J. Thorac. Cardiovasc. Surg. · Jul 2012
Right ventricular papillary muscle approximation as a novel technique of valve repair for functional tricuspid regurgitation in an ex vivo porcine model.
Annuloplasty for functional tricuspid regurgitation may sometimes be ineffective because of chamber dilation and valve tethering. This study compared a novel technique, right ventricle (RV)-papillary muscle approximation, with annuloplasty in experimentally-produced tricuspid regurgitation. ⋯ This ex vivo study suggests that RV-papillary muscle approximation potentially repairs tricuspid regurgitation better than annuloplasty by improving ventricular sphericity and valve tethering as well as annular dimension.
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J. Thorac. Cardiovasc. Surg. · Jul 2012
Short- and long-term outcomes in patients undergoing valve surgery with end-stage renal failure receiving chronic hemodialysis.
The objective of this study was to evaluate the effect of chronic preoperative hemodialysis for end-stage renal failure in patients undergoing valve surgery. ⋯ In this large cohort of patients, preoperative dialysis conferred a high risk of perioperative morbidity and mortality and poor long-term survival after valve surgery. Risk stratification and future research efforts should focus on more precise identification of the benefits of valve surgery in this high-risk patient population.
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J. Thorac. Cardiovasc. Surg. · Jul 2012
Evolving surgical techniques for pulmonary endarterectomy according to the changing features of chronic thromboembolic pulmonary hypertension patients during 17-year single-center experience.
An increasing number of elderly patients are referred for pulmonary endarterectomy. The distinction between operable and inoperable lesions has been challenged over time. Hence, we developed alternative cardiopulmonary bypass management and cerebral protection strategies to obtain satisfactory surgical results according to the changing patient features. ⋯ In our experience, our alternative strategy resulted in a better combination of surgical accuracy and cerebral protection and improved outcomes.
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J. Thorac. Cardiovasc. Surg. · Jul 2012
ACCF/SCAI/AATS/AHA/ASE/ASNC/HFSA/HRS/SCCM/SCCT/SCMR/STS 2012 appropriate use criteria for diagnostic catheterization: a report of the American College of Cardiology Foundation Appropriate Use Criteria Task Force, Society for Cardiovascular Angiography and Interventions, American Association for Thoracic Surgery, American Heart Association, American Society of Echocardiography, American Society of Nuclear Cardiology, Heart Failure Society of America, Heart Rhythm Society, Society of Critical Care Medicine, Society of Cardiovascular Computed Tomography, Society for Cardiovascular Magnetic Resonance, Society of Thoracic Surgeons.
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J. Thorac. Cardiovasc. Surg. · Jul 2012
On-pump inhibition of es-ENT1 nucleoside transporter and adenosine deaminase during aortic crossclamping entraps intracellular adenosine and protects against reperfusion injury: role of adenosine A1 receptor.
The inhibition of adenosine deaminase with erythro-9 (2-hydroxy-3-nonyl)-adenine (EHNA) and the es-ENT1 transporter with p-nitro-benzylthioinosine (NBMPR), entraps myocardial intracellular adenosine during on-pump warm aortic crossclamping, leading to a complete recovery of cardiac function and adenosine triphosphate (ATP) during reperfusion. The differential role of entrapped intracellular and circulating adenosine in EHNA/NBMPR-mediated protection is unknown. Selective (8-cyclopentyl-1,3-dipropyl-xanthine) or nonselective [8-(p-sulfophenyl)theophyline] A1 receptor antagonists were used to block adenosine A1-receptor contribution in EHNA/NBMPR-mediated cardiac recovery. ⋯ In addition to the cardioprotection mediated by activation of the adenosine receptors by extracellular adenosine, EHNA/NBMPR entrapment of intracellular adenosine provided a significant component of myocardial protection despite adenosine A1 receptor blockade.