ALERT!

This site is not optimized for Internet Explorer 8 (or older).

Please upgrade to a newer version of Internet Explorer or use an alternate browser such as Chrome or Firefox.

Journal and News Scan

Source: The Journal of Thoracic and Cardiovascular Surgery
Author(s): Nina Feirer, Anna Buchner, Melanie Weber, Miriam Lang, Elda Dzilic, Andrea Amabile, Arnar  Geirsson, Teresa Trenkwalder, Markus Krane, Keti Vitanova

Determining the appropriate prosthetic for mitral valve replacement is an ongoing area of study. This article looked at trends at a single center over a period of 20 years and compared the use of biologic (1,658 patients) and mechanical valves (369 patients). Survival among groups was similar, however, patients with mechanical valves had significantly lower incidence for reoperation overall. The researchers discuss the established durability of mechanical valves, pitfalls of selection bias in patients of different age groups and across eras, and they share comparisons with existing data in the literature from other centers of excellence.
 

Source: JTCVS Structural and Endovascular
Author(s): Christopher K. Mehta, Tom X. Liu, Abigail S. Baldridge, Jane Kruse, Jyothy Puthumana, Robert O. Bonow, Duc T. Pham, Douglas R. Johnston, S. Christopher Malaisrie, Patrick M. McCarthy

Treatment of aortic stenosis due to a bicuspid aortic valve (BAV), requires a lifetime strategy due to structural valve degeneration that necessitates redo intervention, such as surgical aortic valve replacement (SAVR) or transcatheter aortic valve replacement (TAVR). The researchers looked at outcomes for surgical valve replacement in patients with and without concomitant aortic aneurysms, and have reported excellent operative and reoperative outcomes, including durability at 10 years and valve function. The researchers make a case for performing surgical valve replacement versus TAVR in younger patients for several reasons, including the favorable operative and reoperative safety profile, ability to intervene on concomitant pathology (such as aneurysmal disease and atrial fibrillation), and established long-term durability profile. 
 

Source: JTCVS Structural and Endovascular
Author(s): Thais Faggion Vinholo, Chi Chi Do-Nguyen, Edward Percy, Sameer Hirji, Jake Awtry, Mariam Kerolos, Derrick Tam, Paige Newell, Morgan Harloff, Alexander A. Brescia, Tsuyoshi Kaneko, Ashraf A. Sabe

Transcatheter aortic valve replacement (TAVR) has surpassed surgical aortic valve replacements in volume since TAVR is now approved for patients of all surgical risk categories. This article evaluated trainees and program directors to assess current training patterns and comfort levels regarding catheter-based interventions. A majority of trainees had a mean of 2.8 months on dedicated catheter-based rotations, although often serving as assistants. Only a minority of residents across the board felt comfortable performing these procedures (12 percent with dedicated rotations and 10 percent without). The authors highlight the increasing need for a more robust catheter-based intervention curriculum to aid with training the upcoming generation of cardiothoracic surgeons.

Source: JTCVS Structural and Endovascular
Author(s): Christopher R. Burke, David Mauchley, Scott DeRoo

Post Ross procedure dilation of the pulmonary autograft (neo-aorta) is a major long-term draw back that has been dealt with in many ways, including strict blood pressure control for one year, ring and suture annuloplasty techniques, and autologous and prosthetic external graft stabilization techniques. These techniques are associated with varying technical difficulties and can add considerable time to the overall operation. The authors report their outcomes with their Seattle shawl modification of a protected Ross technique performed for bicuspid aortic valve with promising early results. This technique, described in detail, modifies the skirt of a Valsalva graft with keyholes for coronary button implantation. The authors also discuss their algorithm for choosing this technique over other conventional established approaches.

Source: European Journal of Cardio-Thoracic Surgery
Author(s): Murat Avsar, Tobias Goecke, Oliver Keil, Harald Koeditz, Nicolaus Schwerk, Joachim F Kuebler, Alexander Horke, Gregor Warnecke, Axel Haverich, Benno Ure, Patrick Zardo

Button battery ingestion in children is associated with severe morbidity and mortality if not treated promptly, due to the coagulation necrosis that ensues. Formation of a tracheoesophageal fistula (TEF), due to tissue necrosis, is an exceedingly rare complication, albeit one that carries high mortality. This article reports on four cases of TEF, their presentation, perioperative management, the surgical treatment employed, and follow-up. The authors discuss the use of esophagectomy with cervical fistula, repair of the trachea with aortic homograft, and the use of latissimus dorsi pedicled interposition flaps to cover and reinforce large tracheobronchial defects. The authors also discuss their technique and rationale for using aortic homograft due to its stiffer mechanical properties compared to bovine or autologous pericardium, thus, theoretically, applying less stress to suture lines.

Source: European Journal of Cardio-Thoracic Surgery
Author(s): Matthias Evermann, Imme Roesner, Doris-Maria Denk-Linnert, Walter Klepetko, Thomas Schweiger, Konrad Hoetzenecker 

Surgical treatment of laryngotracheal stenosis remains challenging not only because of low case volumes, but also due to highly individualized approaches used, including use of different endoscopic approaches. This article discusses surgical approaches used in 45 patients, including standard cricotracheal resection (CTR) (11 percent), CTR with dorsal mucosal flap (49 percent), CTR with dorsal mucosal flap and lateral cricoplasty (24 percent) and single stage laryngotracheal reconstruction (16 percent). Although, these procedures were carried out with low morbidity, it appears that prior endoscopic approaches add to the complexity of subsequent surgical resection, and adversely affect metrics in functional evaluation. Thus, the authors make a case for earlier surgical referral in patients with laryngotracheal stenosis.

Source: European Journal of Cardio-Thoracic Surgery
Author(s): Peter Henschke, Laura Chiara Guglielmetti, Sven Hillinger, Gian-Marco Monsch, Didier Schneiter, Isabelle Opitz, Olivia Lauk

Surgical treatment of pleural mesothelioma remains challenging and carries high morbidity, especially in patients who develop post operative empyema. This interesting article retrospectively studied 400 patients of whom 50 developed postoperative empyema. Extrapleural pneumonectomy (EPP) was found to be the only risk factor associated with development of empyema, with an odds ratio of 2.8 after controlling for confounding factors. Of note, survival was significantly worse in patients who developed empyema compared to those who did not.

Source: European Heart Journal
Author(s): Ulf Landmesser, Carsten Skurk, Apostolos Tzikas, Volkmar Falk, Vivek Y Reddy, Stephan Windecker 

Atrial fibrillation (AF) increases the risk of stroke and systemic embolism. While oral anticoagulation is the current standard of care, there is a growing body of evidence supporting left atrial appendage closure (LAAC) as an alternative or complementary treatment approach to reduce the risk of stroke or systemic embolism in patients with AF. An increasing number of randomized clinical trials studying the efficacy and safety of catheter-based LAAC in comparison with medical noninterventional treatment are giving further insights into this topic. Furthermore, robust randomized data about surgical LAAC in patients with AF undergoing cardiac surgery showed a significant reduction of the risk of stroke on the background of continued anticoagulation therapy. In this review, the authors describe the rapidly evolving field of LAAC and discuss recent clinical data, ongoing studies, open questions, and current limitations of LAAC.

Source: European Journal of Cardio-Thoracic Surgery
Author(s): Sara Fra, Usue Caballero-Silva, Alberto Cabañero-Sánchez, Gemma María Muñoz-Molina, Cristina Cavestany García-Matres, Jose Deymar Lozano-Ayala, Luis Lomanto-Navarro, Elena Vílchez-Pernias, Nicolás Moreno-Mata

The aim of this study was to demonstrate the ability of the Versius Surgical System to successfully and safely complete a range of thoracic procedures aligned with phase 2a of the (Development) of the Idea, Development, Exploration, Assessment and Long-term follow-up (IDEAL) framework for surgical innovation. 

This prospective study included the first 30 consecutive patients who underwent robotic surgery with Versius by two surgeons without prior robotic experience between 1 April 2023 and 30 December2023 (25 lung resections [i.e., wedge, segmentectomy, lobectomy] and 5 thymectomies). There were no specific predetermined selection criteria for each case. The primary outcome was safe completion of the procedure without unplanned conversion. Secondary outcomes included intraoperative and postoperative complications, intraoperative device-related outcomes, and pathology results. 

Twenty-eight cases (93.3 percent) were completed without conversion. Both conversions were to thoracoscopy, one due to a console alarm and the other due to a pulmonary artery bleeding. In lung resections, the median console time was 103 (90–129) minutes. Five patients (20 percent) experienced postoperative complications, the most frequent was persistent air leak (16 percent). The median length –of stay was 3 (2–4) days. Neither readmissions nor mortality was observed. In thymectomies, no intraoperative or postoperative complications, readmissions, reinterventions or mortality were observed. The median console time was 77 (75–89) minutes and the median length of stay was 1 (1–1) day. 

This phase 2a IDEAL-D study confirms lung resections and thymectomies are feasible with the use of Versius system, laying the foundation for larger phase 2b and 3 clinical studies within the IDEAL-D framework. 

Source: Journal of the American Heart Association 
Author(s): Alexander C. Egbe, C. Charles Jain, Omar Abozied, Luke J. Burchill, Ahmed Younis, Snigdha Karnakoti, Marwan H. Ahmed, and Heidi M. Connolly

There is limited data about the impact of timing of pulmonary valve replacement (PVR) on right heart reverse remodeling in patients with pulmonary regurgitation following intervention for isolated pulmonary valve stenosis (PS). This study compared differences in postprocedural right heart reverse remodeling after early versus late PVR (defined as PVR before versus after attainment of the conservative consensus criteria proposed by Bokma et al, 2018) in patients with prior intervention for PS, using patients with tetralogy of Fallot as the reference group. 

Right atrial reservoir strain and right ventricular free wall strain were measured at baseline, one and three years after PVR. There were 114 patients with PS (early PVR, 87 [76 percent]; late PVR, 27 [24 percent]) and 291 patients with tetralogy of Fallot (early PVR, 197 [67 percent]; late PVR, 96 [33 percent]). The PS group had greater improvement in right atrial reservoir strain at one year (12 percent ±4 percent versus 8 percent±4 percent; P<0.001) and three years (15 percent±6 percent  versus 9 percent ±6 percent ; P<0.001), and a greater improvement in right ventricular free wall strain at one year (12 percent ±4 percent  versus 7 percent ±3 percent , P=0.008) and three years (16 percent ±6 percent  versus 12 percent ±5 percent ; P=0.01) after PVR compared with the tetralogy of Fallot group. There was no difference in right heart reverse remodeling between patients who underwent early versus later PVR within the PS group. In contrast, late PVR was associated with less right heart reverse remodeling within the tetralogy of Fallot group. 

These data suggest that patients with palliated PS presenting pulmonary regurgitation have a more benign clinical course, hence, delaying PVR in this population may be appropriate. 

Pages