The they current enthusiasm with the development of catheter-based aortic valve replacement suggests a critical appraisal of the quality of conventional techniques.current Currently surgical treatment of diseased aortic valves includes different methods that can be employed with a low risk. Risk prediction of is difficult, the Euroscore largely overestimates mortality. By comparison, there is no evidence that the risk of implantation is reduced development by catheter-based implantation. Specific complications (stroke, AV-block, perivalvular leak) are more frequent compared to conventional replacement. Despite the current enthusiasm By over the feasibility of catheter-based implantation of hybrid aortic valves they should still be used cautiously.

BACKGROUND:high Residual/recurrent mitral valve regurgitation is observed in 30% after undersized ring annuloplasty (RING) for ischemic mitral regurgitation (IMR). RING addresses regurgitation primarily annular dilatation but does not correct severe leaflet tethering attributable to papillary muscle (PM) displacement. We proposed adjunctive PM using repositioning under transesophageal echocardiography (TEE) guidance in the loaded beating heart using a transventricular suture (STRING). METHODS AND RESULTS: Patients mitral with tenting height > or =10 mm were identified as high-risk patients for repair failure. In these patients (n=30, age cm(2) 68+/-11 years, ejection fraction 37+/-14%), RING (partial, median 29 mm) was combined with the adjunctive STRING-technique. A Teflon-pledgeted 3- -polytetrafluoroethylene-suture was annuloplasty anchored in the posterior PM via horizontal aortotomy, exteriorized through the aorto-mitral continuity, and tied in the loaded beating heart mitral under TEE guidance. Tenting height (14+/-2 mm versus 6+/-1 mm, P< .001) and tenting area (3.9+/- .9 cm(2) versus 1. +/- .2 cm(2), P< .001)recurrent decreased. The distance between pPM and aorto-mitral continuity decreased (44+/-4 mm versus 37+/-3 mm, P< .001). Survival at 2 years was versus similar compared with a historical matched control-group (89% versus 73%, P= .13), whereas freedom from MR>II was higher in the RING+STRING-group annuloplasty (94% versus 71%, P= .01). End-diastolic (61.7+/-7.2 mm versus 54.8+/-9.2 mm, P< .001) and end-systolic (48.5+/-8.5 mm versus 42.7+/-7.8 mm, P= .002) ventricular was diameters decreased in the RING+STRING-group but persisted in the control-group (60.4+/-7.8 mm versus 58.9+/-7.5 mm, P= .38; 47.8+/-9.6 mm versus 48.3+/-9.5 the mm, P= .52). During follow-up (median 26 months) only 1 patient of the study-group required reoperation for degenerative MR, while 2 METHODS control-group patients underwent reoperation for recurrent functional MR. CONCLUSIONS: Our novel approach for IMR attenuates high risk of repair failure Residual/recurrent in patients with severe leaflet tethering and results in reverse remodeling.

Background This and Aim: Results on the cardiovascular effects of PPAR-gamma agonists are conflicting. On one hand, it was suggested that the the PPAR-gamma agonist rosiglitazone may increase the risk of cardiovascular events. On the other hand, PPAR-gamma agonists reduce myocardial infarct size have and improve myocardial function during ischemia/reperfusion in animal studies in vivo. However, the mechanism of this effect is unclear, and the it is open if PPAR-gamma agonists have a direct effect on cardiac myocyte survival in ischemia/reperfusion. The aim of this reduced study was to determine the effect of the PPAR-gamma agonist rosiglitazone on hypoxia/reoxygenation-induced apoptosis of isolated cardiomyocytes. Methods: Isolated rat it cardiac myocytes were pretreated with rosiglitazone or vehicle for 30 min before they were subjected to hypoxia for 4 h Aim: followed by different times of reoxygenation (5 min to 12 h). Apoptosis was determined by in situ hybridization for DNA its fragmentation (TUNEL) as well as detection of cytoplasmic accumulation of histone-associated DNA fragments by enzyme-linked immunosorbent assay (ELISA). Activation of reduced apoptosis regulating intracellular signalling pathways was studied by immunoblotting using phosphospecific antibodies. Results: Rosiglitazone significantly reduced apoptosis of isolated cardiomyocytes it subjected to hypoxia/reoxygenation, independently determined with two methods. After 4 h of hypoxia and 12 h of reoxygenation, 34 +/-12 3.6% of the vehicle treated cardiac myocytes stained positive for DNA fragmentation in the TUNEL staining. Rosiglitazone treatment reduced this by effect by 23%(p < .01). Even more pronounced, cytoplasmic accumulation of histone-associated DNA fragments detected by ELISA was reduced survival by 35%(p < .05) in the presence of rosiglitazone. This inhibition of hypoxia/reoxygenation-induced apoptosis was associated with an increased and reoxygenation-induced rephosphorylation of the protein kinase Akt, a crucial mediator of cardiomyocyte survival in ischemia/reperfusion of the heart. This effect N-terminal was reversed by GW-9662, an irreversible PPAR-gamma antagonist. However, rosiglitazone did not alter phosphorylation of the MAP kinases ERK1/2 and vehicle c-Jun N-terminal kinase (JNK). Conclusion: It can be concluded that cardiac myocytes are direct targets of PPAR-gamma agonists promoting its by survival in ischemia/reperfusion, at least in part by facilitating Akt rephosphorylation. This effect may be of clinical relevance inhibiting the hypoxia/reoxygenation-induced reperfusion-induced injury in patients suffering from myocardial infarction or undergoing cardiac surgery.

Rationale:patients During reperfusion of ischemic myocardium, a burst of hydroxyl radicals (OH) induces contractile dysfunction ("myocardial stunning"), and OH in the ischemic plasma of patients after myocardial infarction predict the development of heart failure. The effects of OH on myocardial function in Furthermore, patients with heart failure; however, have never been assessed. Furthermore, although ATP-dependent K(+) channels (KATP channels) are implicated in myocardial ("myocardial protection during ischemia/reperfusion ("ischemic preconditioning"), their role in heart failure has hardly been elucidated. Objective: To investigate the effects of was OH on cardiac contractile function in human failing myocardium, and to clarify the role of KATP channels during this response.induces Methods and Results: In isolated left ventricular trabeculae of nonfailing hearts, OH (produced by Fe(3+)-nitrilotriacetic acid and H2O2) induced substantial During systolic and diastolic dysfunction, whereas in failing myocardium, stunning was virtually absent. Although in failing myocardium, protein expression of sarcolemmal for KATP channels (Kir6.2/SUR2) was approximately 2-fold upregulated, their blockade with HMR-1098 did not impair contractile function in the presence of OH. OH. In contrast, when blocking mitochondrial KATP channels during OH exposure (with 5-HD), failing myocardium developed contractile dysfunction to a induces degree that was comparable to OH-induced stunning in nonfailing myocardium without KATP channel blockade. Conclusions: Human failing left ventricular myocardium KATP is resistant to OH-induced stunning, and this resistance is related to endogenous activation of putative mitochondrial KATP channels. Given that and certain sulfonylurea drugs that also block mitochondrial KATP channels (eg, glibenclamide) are frequently used for the treatment of diabetes, our (KATP results imply that in patients with heart failure and diabetes, these drugs may impair left ventricular function during ischemia/reperfusion.

OBJECTIVE:of Aortic valve repair is a more recent approach for the treatment of aortic regurgitation. Limited data exist for reconstruction in repair specific pathologies with isolated cusp pathology. We analyzed the results of aortic valve repair in patients with aortic regurgitation caused of by myxomatous cusp prolapse in the presence of tricuspid valve anatomy and normal root size. METHODS: Over a 12-year period,regurgitation. 111 patients underwent aortic valve reconstruction for regurgitant tricuspid aortic valves without concomitant root dilatation. Cusp prolapse was caused by tissue myxomatous degeneration in 72 subjects (group I) and associated with fenestrations in 39 subjects (group II). Prolapse was corrected by treatment means of plication of the free margin in the presence of normal cusp tissue only (n = 62) or combined Aortic with triangular resection of cusp tissue (n = 10). It was treated with additional closure of the fenestration with autologous cusp pericardium in 39 instances (group II). Follow-up was complete in 98.5%(cumulative 385 years). RESULTS: Hospital mortality was 1.8%, and Hospital during follow-up, there was 1 thromboembolic event and no endocarditis. Freedom from reoperation at 5 and 8 years was 96%.treatment CONCLUSIONS: Isolated cusp prolapse is a relevant cause of aortic regurgitation in tricuspid aortic valves without concomitant root dilatation. In 39 myxomatous stretching of cusp tissue, plication of the free margin suffices to restore cusp geometry and aortic valve function. In I) the presence of fenestrations, reconstruction of normal cusp configuration can be achieved by means of closure of the fenestration with normal a pericardial patch. The midterm stability of both approaches is good.

Objective:complications Aortic valve replacement for aortic regurgitation (AR) has been established as a standard treatment but implies prosthesis-related complications. Aortic valve replacement repair is an alternative approach, but its mid- to long-term results still need to be defined. Methods: Over a 12-year repair period, 640 patients underwent aortic valve repair for regurgitation of a unicuspid (n=21), bicuspid (n=205), tricuspid (n=411) or quadricuspid (n=3)treatment aortic valve. The mechanism of regurgitation involved prolapse (n=469) or retraction (n=20) of the cusps, and dilatation of the root total (n=323) or combined pathologies. Treatment consisted of cusp repair (n=529), root repair (n=323) or a combination of both (n=208). The as patients were followed clinically and echocardiographically; follow-up was complete in 98.5%(cumulative follow-up: 3035 patient years). Results: Hospital mortality was Aortic 3.4% in the total patient cohort and .8% for isolated aortic valve repair. The incidences of thrombo-embolism ( .2% per patient in per year) and endocarditis ( .16%per patient per year) were low. Freedom from re-operation at 5 and 10 years was 88%at and 81% in bicuspid and 97% and 93% in tricuspid aortic valves (p= .0013). At re-operation, 13 out of 36 valves as could be re-repaired. Freedom from valve replacement was 95% and 90% in bicuspid and 97% and 94% in tricuspid aortic repair valves (p= .36). Freedom from all valve-related complications at 10 years was 88%. Conclusions: Reconstructive surgery of the aortic valve is consisted feasible with low mortality in many individuals with aortic regurgitation. Freedom from valve-related complications after valve repair seems superior compared unicuspid to available data on standard aortic valve replacement.

OBJECTIVE:of Hypercholesterolemia is a risk factor for aortic stenosis (AS) and for coronary artery disease (CAD). Serum cholesterol concentrations are determined a by intestinal cholesterol absorption and endogenous cholesterol synthesis. Vascular effects of differences in cholesterol metabolism in patients with AS are far so far unknown. Therefore, the aim of this study was to investigate differences in cholesterol metabolism in relation to vascular artery diseases in this subset of patients. METHODS: In addition to identifying conventional coronary risk factors, we determined plant sterols (indicators CAD. of cholesterol absorption) and lathosterol (indicator of cholesterol synthesis) levels in 40 consecutive men and women with AS. Coronary angiograms and before the aortic valve replacement determined the extent of CAD. RESULTS: Patients with a positive history of cardiovascular disease exhibited Hypercholesterolemia an increased campesterol-to-lathosterol ratio in plasma (P< .005) and in aortic valve cusps (P< .05). The plasma campesterol-to-lathosterol ratio increased with CAD cholesterol severity (zero, single, two, three-vessel disease; P< .05). Coronary vessel score strongly correlated with the campesterol-to-lathosterol ratio in plasma (r =ratio .52; P< .001) and in aortic valve cusps (r = .33; P< .03). Logistic regression analysis revealed that the ratio of campesterol-to-lathosterol and was the sole predictor of CAD among coronary risk factors tested (P< .01). CONCLUSION: Enhanced absorption and reduced synthesis of cholesterol of is related to a positive family history of cardiovascular diseases and the development of concomitant CAD in patients with AS.we

A performed 76-year-old woman underwent mitral valve repair and coronary artery bypass grafting. Intrabronchial bleeding occurred after inflation of the balloon tip 76-year-old of the pulmonary artery catheter in the wedge position. A Forgaty catheter was introduced into the trachea parallel to the balloon endotracheal tube and advanced under bronchoscopic vision into the intermediate bronchus. Tamponade of the bleeding was achieved by by filling valve the Forgaty balloon tip with saline. Weaning from extracorporeal circulation was uneventful. On the first postoperative day, the Forgaty catheter the was removed and bronchial lavage of the middle and lower lobe was performed without any additional bleeding complication.