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Journal and News Scan

Source: The Annals of Thoracic Surgery
Author(s): Michael E. Ibrahim, Omar Toubat, Alexandra E. Sperry, Levi Bonnell, Christian Elenbaas, Isao Anzai, Paul N. Fiorilli, Robert O. Bonow, Robert L. Smith, Robert H. Habib, Michael A. Acker, Wilson Y. Szeto

This study evaluated the outcomes of mitral valve re-repair vs replacement after failed primary mitral regurgitation repair. The Society of Thoracic Surgeons (STS) database was queried, and 1,749 reoperations after failed mitral repair for degenerative regurgitation were identified: 410 re-repairs (23.4 percent) and 1,339 replacements (76.6 percent). Re-repair demonstrated superior intermediate-term survival compared to replacement (adjusted HR 1.96, p=0.022), with lower postoperative morbidity (6.8 percent vs 11 percent, p=0.042). Factors favoring re-repair included younger age, fewer comorbidities, reintervention within two years, and posterior leaflet pathology. The authors concluded that mitral re-repair offers significant survival advantages over replacement in appropriately selected patients, suggesting it should be preferentially pursued at expert centers when anatomically feasible for recurrent degenerative mitral regurgitation. 

Source: Health Technology Assessment
Author(s): Enoch F. Akowuah, Rebecca H. Maier, Helen C. Hancock, Janelle Wagnild, Luke Vale, Cristina Fernandez-Garcia, Ehsan Kharati, Emmanuel Ogundimu, Ayesha Mathias, Zoe Walmsley, Nicola Howe, Richard Graham, Karen Ainsworth, Joseph Zacharias

The UK Mini Mitral Trial compared minimally invasive (Mini) mitral valve repair (MVr) to conventional sternotomy in patients with degenerative mitral regurgitation. The primary objective was to assess physical function (PF) recovery, using the Short Form 36-Item Health Survey, version 2 (SF-36v2) PF scale 12 weeks post-surgery. The trial found no significant difference in PF between the two approaches. Although the Mini approach was more costly, it had higher quality-adjusted life years (QALYs) and a low probability of being cost-effective compared to sternotomy. Both groups had high valve repair rates and low recurrent mitral regurgitation. Hospital stay was shorter for the Mini approach, with a higher proportion of early discharges. Safety outcomes were similar across both procedures. The trial suggests that the Mini approach offers durable repairs with comparable safety but no clear advantage in PF recovery. 

Source: The Annals of Thoracic Surgery
Author(s): Wilson Y. Szeto, Shinichi Fukuhara, Fernando Fleischman, Ibrahim Sultan, William Brinkman, George Arnaoutakis, Hiroo Takayama, Kyle Eudailey, Arminder Jassar, Michael C. Moon

The PERSEVERE study evaluated one-year outcomes of the AMDS Hybrid Prosthesis for acute DeBakey Type I aortic dissection with malperfusion. This prospective, single-arm trial enrolled 93 patients across 26 US sites between July 2022 and May 2023. Primary endpoints included major adverse events including mortality, stroke, renal failure requiring dialysis, myocardial infarction, and distal anastomotic new entry tears (DANE). Through one-year, mortality was 20.4 percent (compared to 42.7 percent in the reference cohort), with minimal events occurring beyond 30 days and no postoperative DANE tears. Secondary outcomes showed 96 percent freedom from unanticipated aortic reoperation and 100 percent arch patency. Positive aortic remodeling demonstrated total aortic diameter stabilization (100 percent in Zone 1, 98 percent in Zone 2, and 73 percent in Zone 3), true lumen expansion (96 percent, 94 percent, and 70 percent respectively), and false lumen thrombosis (91 percent, 92 percent, and 88 percent respectively). The authors conclude that the AMDS device provides encouraging outcomes with reduced mortality and favorable aortic remodeling in this high-risk population. 

Source: BMC Surgery
Author(s): Kai Yang, Chen Wang, Qi Wang, Yongzhi Liu, Wei Cao, Jinlong Zhang, Haochi Li, Dacheng Jin, Yunjiu Gou

This meta-analysis examined 2,732 patients with spontaneous pneumothorax undergoing bullectomy combined with either parietal pleurectomy (PP) or pleural abrasion (PA). Compared with pleural abrasion, parietal pleurectomy was associated with a significantly lower long-term recurrence rate of pneumothorax (odds ratio 0.56, 95 percent confidence interval (CI) 0.41–0.77). However, pleurectomy carried a higher perioperative burden: longer operative times (mean difference of approximately 16 minutes), greater intraoperative blood loss, higher postoperative drainage volume, longer chest-tube drainage duration, and longer hospital stays. Importantly, postoperative pain scores were comparable between the two procedures. For cardiothoracic and thoracic surgeons worldwide, this meta-analysis provides the most up-to-date pooled evidence comparing two common pleurodesis techniques in spontaneous pneumothorax surgery. It underscores a clear trade-off: parietal pleurectomy offers better long-term protection against recurrence, but at the cost of increased perioperative morbidity. These insights are highly relevant when tailoring surgical strategy, especially in patients with recurrent pneumothorax, complex bullous disease, or comorbidities, balancing recurrence risk against recovery burden and safety. 

Source: JACC Journals 
Author(s): Ruben W. de Winter, Roel Hoek, Simon J. Walsh, Colm G. Hanratty, Ralf W. Sprengers, Jos W. R. Twisk, Iris Vegting, Stefan P. Schumacher, Michiel J. Bom, Niels J. Verouden, José P. Henriques, Adriaan Wilgenhof, Michele M. Viscusi, Koen Teeuwen, Maksymilian P. Opolski, Rafał Wolny, Pierfrancesco Agostoni, Jan-Peter van Kuijk, Bas E. Schölzel, Adriaan O. Kraaijeveld, Robert-Jan M. van Geuns, Maurits T. Dirksen, Antonius A.C.M. Heestermans, Jo Dens, Johan Bennett, Steven E. F. Haine, Ronak Delewi, Alexander Nap, James C. Spratt, Paul Knaapen

The PROCTOR trial randomized 220 post-coronary artery bypass grafting patients with saphenous vein graft (SVG) failure to native vessel percutaneous coronary intervention (PCI) (n=108) or SVG PCI (n=112). At one-year, major adverse cardiac events occurred in 34 percent with native PCI vs 19 percent with SVG PCI (HR 2.14; P=0.006). Nonfatal target-territory myocardial infarction (MI) was higher with native PCI (HR 2.12; P=0.029), as was repeat revascularization (HR 2.19; P=0.044). PCI-related MI occurred in 13 percent with native PCI and one percent with SVG PCI (HR 14.85; P=0.009). All-cause mortality did not differ (HR 1.59; P=0.472). SVG PCI produced significantly better one-year outcomes. 

Source: European Journal of Cardio-Thoracic Surgery
Author(s): Sigrid Sandner, Aina Hirofuji, Polina Mantaj, Antonino Di Franco, Mohamed Rahouma, Alexander Gregg, Katherine Krieger, Michelle Demetres, Mario Gaudino

This meta-analysis of eight randomized clinical trials (RCT) compared no-touch (NT) vs conventional (CON) saphenous vein (SV) harvesting in coronary bypass surgery. At a 3.7-year follow-up, NT-SV harvesting showed significantly lower graft failure rates compared to CON-SV. However, mortality and major adverse cardiac events were similar between groups. NT-SV harvesting was associated with higher leg wound complications. The author’s conclusion was that NT-SV harvesting reduces graft failure but increases wound complications; thus, strategies to mitigate harvest-site complications are needed. 

Source: British Broadcasting Corporation
Author(s): Rachael McMenemy, Louise Parry

Sir Terence English, the pioneering cardiac surgeon who performed the United Kingdom’s first successful heart transplant in 1979, has died at the age of 93. His groundbreaking work helped Royal Papworth Hospital achieve an international reputation for heart transplantation and, later, heart-lung and lung transplants. In 1991, he was knighted for his contributions to surgery and medicine. Sir Terrence will be remembered for his commitment to surgical excellence and mentorship in cardiothoracic surgery, and as somebody who encouraged others to find their own passions.  

Source: Frontiers in Transplantation
Author(s): Guerard W. Byrne, Christopher G. A. McGregor

This article examines both preclinical and clinical results in cardiac xenotransplantation, highlighting the ongoing challenges in achieving consistent and durable clinical graft survival. The authors discuss the relative value of preclinical nonhuman primate and human decedent transplant models to optimize patient cross-matching, immune suppression, postoperative monitoring, and graft survival. 

Source: JAMA Network
Author(s): Christopher X. Wong, Christopher C. Cheung, Gabrielle Montenegro, Hannah H. Oo, Isabella J. Peña, Janet J. Tang, Samuel J. Tu, Grace Wall, Thomas A. Dewland, Joshua D. Moss, Edward P. Gerstenfeld, Zian H. Tseng, Henry H. Hsia, Randall J. Lee, Jeffrey E. Olgin, Vasanth Vedantham, Melvin M. Scheinman, Catherine Lee, Prashanthan Sanders, Gregory M. Marcus

The DECAF randomized clinical trial investigated whether caffeinated coffee influences the recurrence of atrial fibrillation (AF) after cardioversion. Two hundred patients with persistent AF were randomized to either continue consuming caffeinated coffee (≥1 cup daily) or abstain entirely for six months. AF or atrial flutter recurred in 47 percent of coffee drinkers compared to 64 percent of abstainers, corresponding to a 39 percent lower recurrence risk (HR 0.61; 95 percent CI 0.42–0.89; P = .01). Secondary analyses showed similar trends for AF alone. No differences were seen in adverse events. Contrary to longstanding assumptions, moderate caffeinated coffee intake was associated with a reduced risk of AF recurrence. Proposed mechanisms for this effect include adenosine receptor antagonism, anti-inflammatory effects, and enhanced physical activity. 

Source: European Journal of Cardio-Thoracic Surgery
Author(s): Joseph Kletzer, Antonia van Kampen, Sven Peterss, Tim Berger, Maximilian Kreibich, Caroline Radner, Zara Dietze, Sergey Leontyev, Michael Borger, Christian Hagl, Martin Czerny, Maximilian Luehr

While seasonal patterns suggest that cold weather influences the incidence of acute type A aortic dissection, the impact of subjective thermal stress on dissection risk remains poorly characterized. This retrospective multicenter study examined environmental triggers of acute type A aortic dissection in 548 German patients between 1996 and 2016. Subjective cold exposure, particularly perceived as windchill, significantly increased dissection odds by up to 50 percent, peaking three to four days before events. Elevated atmospheric pressure and low dew point also increased risk, while lower humidity showed modest protection. The acute temporal pattern suggests that cold-induced sympathetic activation, vasoconstriction, and blood pressure surges may precipitate dissection in vulnerable individuals. These interesting findings emphasize that perceived environmental stress outweighs ambient temperature in triggering acute aortic events, highlighting opportunities for targeted prevention during adverse weather conditions.  

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