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Abstract Background We assessed the hemodynamic performance of various prostheses and the clinical outcomes after aortic valve replacement, in different age groups. Methods One-hundred-and-twenty patients with isolated aortic valve stenosis were included in this prospective randomized randomised trial and allocated in three age-groups to receive either pulmonary autograft (PA, n = 20) or mechanical prosthesis (MP, Edwards Mira n = 20) in group 1 (age < 55 years), either stentless bioprosthesis (CE Prima Plus n = 20) or MP (Edwards Mira n = 20) in group 2 (age 55-75 years) and either stentless (CE Prima Plus n = 20) or stented bioprosthesis (CE Perimount n = 20) in group 3 (age > 75). Clinical outcomes and hemodynamic performance were evaluated at discharge, six months and one year. Results In group 1, patients with PA had significantly lower mean gradients than the MP (2.6 vs. 10.9 mmHg, p = 0.0005) with comparable left ventricular mass regression (LVMR). Morbidity included 1 stroke in the PA population and 1 gastrointestinal bleeding in the MP subgroup. In group 2, mean gradients did not differ significantly between both populations (7.0 vs. 8.9 mmHg, p = 0.81). The rate of LVMR and EF were comparable at 12 months; each group with one mortality. Morbidity included 1 stroke and 1 gastrointestinal bleeding in the stentless and 3 bleeding complications in the MP group. In group 3, mean gradients did not differ significantly (7.8 vs 6.5 mmHg, p = 0.06). Postoperative EF and LVMR were comparable. There were 3 deaths in the stented group and no mortality in the stentless group. Morbidity included 1 endocarditis and 1 stroke in the stentless compared to 1 endocarditis, 1 stroke and one pulmonary embolism in the stented group. Conclusions Clinical outcomes justify valve replacement with either valve substitute in the respective age groups. The PA hemodynamically outperformed the MPs. Stentless valves however, did not demonstrate significantly superior hemodynamics or outcomes in comparison to stented bioprosthesis or MPs.

Abstract Vacuum-assisted closure (VAC) of complex infected wounds has recently gained popularity among various surgical specialties. The system is based on the application of negative pressure by controlled suction to the wound surface. The effectiveness of the VAC System on microcirculation and the promotion of granulation tissue proliferation are proved. No contraindications for the use in deep sternal wounds in cardiac surgery are described. In our case report we illustrate a scenario were a patient developed severe bleeding from the ascending aorta by penetration of wire fragments in the vessel. We conclude that all free particles in the sternum have to be removed completely before negative pressure is used.

Vacuum-assisted closure (VAC) of complex infected wounds has recently gained popularity among various surgical specialties. The system is based on the application of negative pressure by controlled suction to the wound surface. The effectiveness of the VAC System on microcirculation and the promotion of granulation tissue proliferation are proved. No contraindications for the use in deep sternal wounds in cardiac surgery are described. In our case report we illustrate a scenario were a patient developed severe bleeding from the ascending aorta by penetration of wire fragments in the vessel. We conclude that all free particles in the sternum have to be removed completely before negative pressure is used. [ABSTRACT FROM AUTHOR]

Background and Aim of the Study: The BioPhysio bioprosthesis (Edwards Lifesciences LLC, Irvine, CA, USA) was designed to further improve the hemodynamic performance currently achieved by stented valves. A flexible Nitinol stent that preserves aortic root dynamics, thus maximizing the effective orifice area (EOA), is a key innovation of this prosthesis. The study aim was to provide a clinical evaluation of this new device., Methods: Between December 2004 and August 2005, a total of 50 patients (27 males, 23 females; mean age 75.8 +/- 5.1 years; range: 55-84 years) received a BioPhysio aortic bioprosthesis. Clinical outcomes, EOAs, mean gradients and regression of left ventricular hypertrophy were evaluated echocardiographically at discharge, and at six, 12, 24, 36, 48, and 60 months after surgery., Results: The 60-month follow up was complete for all patients. No patients died within 30 days of surgery, but the late mortality was 14% (n = 6). There was one sudden unexplained death. One patient developed endocarditis at two years after surgery and underwent reoperation. There were no cases of stroke or renal failure. The BioPhysio prosthesis showed a good hemodynamic performance, with a significant fall in mean gradient to 15.1 +/- 8.3 mmHg, a mean EOA of 1.5 +/- 0.7 cm2, and a mean ejection fraction of 61 +/- 7.2%. There were no cases of aortic regurgitation. The NYHA functional class was improved in all patients, and there was a significant reduction in the left ventricular mass index to 185.7 +/- 49.6 g/m2 at 24 months., Conclusion: The clinical performance of the BioPhysio aortic bioprosthesis is comparable to that of regular stentless aortic valves. However, clinical approval for the widespread use of this bioprosthesis was not obtained.

Background: We evaluated the performance of a new temperature management system (Allon Thermowrap, MTRE, Israel) in maintaining normothermia during OPCAB (Off-Pump Coronary Artery Bypass) procedures and Zeus-robotic IMA (internal mammary artery) takedowns., Material/methods: One hundred patients were prospectively randomized to either a conventional temperature management method (thick blanket, warm intravenous fluids, operating room temperature 25 degrees C), or the new Allon Thermowrap system (pads with temperature-controlled water circulation placed on the patient's back, legs, and arms). The mean age, body surface area, total operating time, and OR air temperature were similar in both groups., Results: The Allon Thermowrap system maintained a higher bladder and nasopharyngeal temperature (p<0.05). The SVR decreased (p<0.05) and the cardiac index increased (p<0.05) in patients with a body temperature>35.80 degrees C. Without reaching a significant level, the postoperative blood loss was lower in the Allon Thermowrap group., Conclusions: The Allon Thermowrap system significantly out-performed conventional techniques in achieving and maintaining normothermia during off-pump and robotic procedures.