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  • Georg Thieme Verlag KG  (11)
  • Hartrumpf, Martin  (11)
  • 1
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2016
    In:  The Thoracic and Cardiovascular Surgeon Vol. 65, No. 03 ( 2016-8-12), p. 225-230
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 65, No. 03 ( 2016-8-12), p. 225-230
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2016
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  • 2
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2017
    In:  The Thoracic and Cardiovascular Surgeon Vol. 65, No. 04 ( 2017-06), p. 332-337
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 65, No. 04 ( 2017-06), p. 332-337
    Abstract: Background Sternal instability after coronary artery bypass grafting (CABG) is a serious complication. Obese patients are at high risk for sternal instability after CABG. This study was conducted to assess the positive impact of double-wire sternal closure on sternal instability. Methods A total of 200 obese patients with a body mass index ≥ 30 kg/m2 undergoing isolated CABG with left internal mammary artery (LIMA) graft were randomly assigned to sternal closure either by eight single wires (n = 100) or by a combination of four double wires and four single wires. Results There was a total of 21 cases with sternal instability: 5 cases (i.e., 5%) in the double-wire group versus 16 cases (16%) in the single-wire group (p = 0.019). Logistic regression analysis showed sternal closure via double wires as an independent protection factor (odds ratio [OR]: 0.276; p = 0.029). Smoking (OR: 5.5; p = 0.006) and postoperative delirium (OR: 3.5; p = 0.033) turned out to be independent risk factors for the development of sternal instability. Conclusion Double-wire sternal closure significantly reduces postoperative sternal instability in obese patients undergoing isolated CABG with LIMA graft.
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2017
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  • 3
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2022
    In:  The Thoracic and Cardiovascular Surgeon Vol. 70, No. 08 ( 2022-12), p. 630-636
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 70, No. 08 ( 2022-12), p. 630-636
    Abstract: One of the major key questions raised in this retrospective study was to identify any correlation of atherosclerotic plaque volume of the ascending aorta and aortic arch with adverse events such as postoperative stroke, critical illness polyneuropathy and myopathy, as well as delirium and all-cause in-hospital mortality. In a second phase of this study, we investigated the relationship between atherosclerotic plaque volume and adverse events regarding the construction of proximal anastomosis on coronary artery bypass grafting procedures using different clamping techniques such as construction of anastomosis on cross-clamping or cross-clamping plus consecutive partial clamping of the aorta. The key findings of our research were that the size of calcium lesions of the ascending aorta and aortic arch correlates with early mortality, critical illness polyneuropathy/myopathy, and delirium but not with stroke. On the other hand, there were no significant differences between isolated cross-clamping versus cross-clamping plus consecutive partial clamping of the aorta regarding the primary adverse events by means of mean plaque volume.
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2022
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  • 4
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2012
    In:  The Thoracic and Cardiovascular Surgeon Vol. 60, No. 05 ( 2012-7), p. 326-333
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 60, No. 05 ( 2012-7), p. 326-333
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2012
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  • 5
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2019
    In:  The Thoracic and Cardiovascular Surgeon Vol. 67, No. 04 ( 2019-06), p. 257-265
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 67, No. 04 ( 2019-06), p. 257-265
    Abstract: Background Transcatheter heart valve (THV) as valve-in-ring is increasingly used in the mitral position. Semi-rigid rings may serve as a more appropriate scaffold for proper anchoring of a THV as they may change from their oval to a round shape thereby fitting to the implanted THV. Methods One rigid and five semi-rigid rings of four manufacturers, Edwards Physio I and II, Sorin 3D Memo, Medtronic Simulus, and St. Jude Medical (SJM) Saddle and SJM Sequin, with sizes 28 to 36 mm and Edwards Sapien III THV 23, 26, and 29 mm were used. Preevaluation comprised insertion/inflation of the THV into the ring and visual inspection for the paravalvular gap ≥ 4 mm2. Only valves not showing paravalvular gap were then submitted to hemodynamic evaluation with a pulse duplicator. Cusp movement was assessed with a high-speed-camera. Mean transvalvular gradients (TVGs) were measured. Results SJM Saddle ring of all sizes and SJM Sequin ring 34 showed marked gaps combined with all THV sizes, thus not undergoing hemodynamic testing. It was further shown that ring sizes ≥ 36 mm did not allow for a proper fit of even the largest THV into the ring of all the manufacturers and were consequently not hemodynamically evaluated. The 23 mm THV was too small for any ring size. The lowest gradients were achieved with the 26 mm THV in 30 and 32 mm and the 29 mm THV in 32 and 34 mm rings. Conclusion Not all currently available annuloplasty rings are ideal scaffolds for THV placement. It appears that a more proper fit can be achieved with semi-rigid rings than with rigid ones. Note that 23 mm THV appeared to be too small for an adequate anchoring in even the smallest available ring. Thus, 26 mm as well as 29 mm THV fit properly in ring sizes between 28 and 34 mm. Surgeons may consider to choose from those ring brands and sizes which allow for good placement of a THV in view of possible valve degeneration in the later course.
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2019
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  • 6
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2018
    In:  The Thoracic and Cardiovascular Surgeon Vol. 66, No. 07 ( 2018-10), p. 537-544
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 66, No. 07 ( 2018-10), p. 537-544
    Abstract: Background MitraClip (Abbott Inc.) is propagated as a palliative option for high-risk patients with mitral insufficiency considered not qualifying for surgical repair. A proportion of patients requires consecutive surgery because of technical failure or inappropriate clinical improvement. Furthermore, surgical reconstruction is impossible in almost all patients after MitraClip implantation. Consequently, these patients receive replacement although primary repair may have been possible. The outcome of those patients compared with patients receiving primary mitral valve replacement (MVR) or mitral valve repair (MVP) was analyzed. Methods A total of 23 patients were retrospectively analyzed after MVR following MitraClip. Overall, 46 patients with corresponding demographic data and risk profile receiving primary MVR (23 patients) or MVP (23 patients) were retrieved for matched pair analysis. Results Mean age was 70 years in all groups, log European system for cardiac operative risk evaluation (EuroSCORE) was 22.47% ± 16.30 in MVR after MitraClip (MC), 22.34% ± 16.23 in MVP, and 22.33% ± 16.14 in MVR group. Preoperative left ventricular ejection fraction (LVEF) was 44%, and postoperative LVEF was 48% in all groups. The 30-day mortality was 21.7% in the MitraClip group whereas it was 4.3% in the MVR and 13.0% in the MVP group. The 1-year survival was 56.5% in the MitraClip group while it was 95.6% in the MVR group and 82.6% in the MVP group (Wilcoxon test: p = 0.007; chi-square test: p = 0.001 MitraClip vs. MVR; p = 0.054 MitraClip vs. MVP). Conclusions Patients requiring surgical MVR after the previous MitraClip fared worse than matched cohorts receiving primary MVR or MVP. Indication for MitraClip should, therefore, be made very cautiously given the excellent results gained with primary surgery.
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2018
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  • 7
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2021
    In:  The Thoracic and Cardiovascular Surgeon Vol. 69, No. 01 ( 2021-01), p. 043-048
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 69, No. 01 ( 2021-01), p. 043-048
    Abstract: Background Polymeric heart valves are constructed from flexible synthetic materials, therefore aiming to combine the advantageous hemodynamic of biological and the longevity of mechanical valve prostheses. One such valve prototype in development is the PIZZA valve constructed of flexible triangular silicone leaflets on a foldable metal base for perspective transcatheter implantation. Here we present further improvements in its performance through structural modifications. Methods Structurally modified prototypes were constructed from silicone sheets and stainless-steel wires. Their performance was then tested in a hemodynamic testing device of the type HKP 2.0. Results Shift from a planar to a cone shape as well as overlapping of the leaflets significantly improved the valves performance, reducing regurgitation as well as systolic pressure gradients. Conclusions The results of the modified prototypes expressed superior performance and represented a step forward on the road to an easily producible, polymeric transcatheter valvular prosthesis.
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2021
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  • 8
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 63, No. 06 ( 2015-2-17), p. 479-486
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    URL: Issue
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2015
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  • 9
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2023
    In:  The Thoracic and Cardiovascular Surgeon Vol. 71, No. 05 ( 2023-08), p. 366-375
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 71, No. 05 ( 2023-08), p. 366-375
    Abstract: Objective According to our nationwide registry, total numbers of surgical aortic valve implantation (sAVR) are constantly declining, while transcathether aortic valve implantation (TAVI) indications are widened toward intermediate- and low-risk patients. So, is there still room for conventionally implanted valves? Can results compete with TAVI or will sAVR be marginalized in the near future? Methods Between 2011 and 2019, 1,034 patients (67.1% male, mean = 72.2 years) were enrolled receiving stented biological valves with or without concomitant coronary artery bypass grafting (CABG), atrial ablation, or wrapping of the ascending aorta. Odds ratios for the early and late mortality were calculated regarding comorbidities as potential risk factors. Statistical analysis was performed using SPSS. Results Overall, early mortality (EM) was 6.1%, 1-year mortality was 11.2%, and 5-year mortality was 19.9%. In low-risk patients (EuroSCORE II 〈 4%), it was 1.0, 2.7, and 9.3%. Incidence of EM was significantly increased following decompensation, prosthetic valve, pacemaker carrier, dialysis, and pulmonary hypertension. Postoperative complications, such as systemic inflammatory response syndrome (SIRS), sepsis, multiorgan failure, hepatic failure, dialysis, gastrointestinal bleeding, and ileus, also increased EM. Late mortality was significantly increased by dialysis, hepatic cirrhosis, infected port system, aortic valve endocarditis, prosthetic valve carrier, and chronic hemodialysis. Conclusion Conventionally implanted aortic valves do well early and late. The fate of the patient is dependent on individual risk-factors. Particularly, in low-risk patients, sAVR can compete with TAVI showing overall good early, as well as late results being even superior in some important aspects such as pacemaker implantation rate. Thus, the time is yet not ripe for TAVI to take over primary indications for AVR in low-risk patient.
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2023
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  • 10
    Online Resource
    Online Resource
    Georg Thieme Verlag KG ; 2020
    In:  The Thoracic and Cardiovascular Surgeon Vol. 68, No. 07 ( 2020-10), p. 557-566
    In: The Thoracic and Cardiovascular Surgeon, Georg Thieme Verlag KG, Vol. 68, No. 07 ( 2020-10), p. 557-566
    Abstract: Background Conventional stented valves (CV) remain gold standard for aortic valve disease. Bovine prostheses have been improved and rapid deployment valves (RDV) have arrived in the recent decade. We compare clinical and hemodynamic short-term outcome of six bovine valves. Methods We retrospectively evaluated 829 consecutive patients (all-comers) receiving bovine aortic valve replacement (AVR). Four CV from different manufacturers (Mitroflow, Crown, Perimount, Trifecta) and two RDV (Perceval, Intuity) were compared in terms of pre-, intra-, and postprocedural data. A risk model for mortality was created. Results All valves reduced gradients. From 23 mm, all CV showed acceptable gradients. Twenty-one millimeter Mitroflow/Perceval and 19 mm Crown showed above-average gradients. As baseline data differed, we performed propensity matching between aggregated isolated CV and RDV groups. Cardiopulmonary bypass (CPB), clamp, and surgery times were shorter with RDV (87.4 ± 34.0 min vs 111.0 ± 34.2, 54.3 ± 21.1 vs 74.9 ± 20.4, 155.2 ± 42.9 vs 178.0 ± 46.8, p  〈  0.001). New pacemaker rate (10.1 vs 1.3%, p = 0.016) and the tendency toward neurologic events (8.9 vs 2.5%, p = 0.086) were higher using RDV, induced mainly by the Perceval. Early mortality was equal (2.5 vs 1.3%, p = 0.560). Revision for bleeding, dialysis, blood products, length-of-stay, gradients, and regurgitation was also equal. Risk analysis showed that low valve size, low ejection fraction, endocarditis, administration of red cells, and prolonged CPB time were predictors of elevated mortality. Conclusion Isolated bovine AVR has low mortality. Valves ≥ 23 mm show comparable gradients while the valve model matters  〈  23 mm. RDV should be used with care. Procedure-related times are shorter than those of CV but pacemaker implantation and neurologic events are more frequent (Perceval). Early mortality is low and valve performance comparable to CV.
    Type of Medium: Online Resource
    ISSN: 0171-6425 , 1439-1902
    Language: English
    Publisher: Georg Thieme Verlag KG
    Publication Date: 2020
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