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BACKGROUND: Heart transplantation is an effective treatment offering the best recovery in both quality and quantity of life in those affected by refractory, severe heart failure. However, transplantation is limited by donor organ availability. The reintroduction of heart donation after the circulatory determination of death (DCD) in 2014 offered an uplift in transplant activity by 30%. Thoraco-abdominal normothermic regional perfusion (taNRP) enables in-situ reperfusion of the DCD heart. The objective of this paper is to assess the clinical outcomes of DCD donor hearts recovered and transplanted from donors undergoing taNRP. METHOD: This was a multicentre retrospective observational study. Outcomes included functional warm ischaemic time, use of mechanical support immediately following transplantation, perioperative and long-term actuarial survival and incidence of acute rejection requiring treatment. 157 taNRP DCD heart transplants, performed between February 2, 2015, and July 29, 2022, have been included from 15 major transplant centres worldwide including the UK, Spain, the USA and Belgium. 673 donations after the neurological determination of death (DBD) heart transplantations from the same centres were used as a comparison group for survival. FINDINGS: taNRP resulted in a 23% increase in heart transplantation activity. Survival was similar in the taNRP group when compared to DBD. 30-day survival was 96.8% ([92.5%-98.6%] 95% CI, n = 156), 1-year survival was 93.2% ([87.7%-96.3%] 95% CI, n = 72) and 5-year survival was 84.3% ([69.6%-92.2%] 95% CI, n = 13). INTERPRETATION: Our study suggests that taNRP provides a significant boost to heart transplantation activity. The survival rates of taNRP are comparable to those obtained for DBD transplantation in this study. The similar survival may in part be related to a short warm ischaemic time or through a possible selection bias of younger donors, this being an uncontrolled observational study. Therefore, our study suggests that taNRP offers an effective method of organ preservation and procurement. This early success of the technique warrants further investigation and use. FUNDING: None of the authors have a financial relationship with a commercial entity that has an interest in the subject. ispartof: ECLINICALMEDICINE vol:58 ispartof: location:England status: published

Background There are limited data on Coronavirus disease 2019 (COVID-19) in solid organ transplant patients, especially in heart transplant recipients, with only a few case reports and case series described so far. Heart transplant recipients may be at particular high risk due to their comorbidities and immunosuppressed state. Case presentation This report describes the clinical course and the challenging management of early COVID-19 infection in two heart transplant recipients who tested positive for the SARS-CoV-2 virus in the perioperative period of the transplant procedure. The two patients developed a severe form of the disease and ultimately died despite the initiation of an antiviral monotherapy with hydroxychloroquine coupled with the interruption of mycophenolate mofetil. Conclusions These two cases illustrate the severity and poor prognosis of COVID-19 in the perioperative period of a heart transplant. Thorough screening of donors and recipients is mandatory, and the issue of asymptomatic carriers needs to be addressed.

Graphical abstract, Highlights • SVD is a main limitation of bioprostheses. • Routine use of bioprostheses in younger patients (

Background Constrictive pericarditis (CP) is a disease characterized by inflammation, progressive fibrosis, and thickening of the pericardium. Constrictive pericarditis after heart transplantation (HT) is a rare phenomenon, with a reported incidence of 1.4–3.9%. It is an important clinical problem which shares similar clinical features with entities such as restrictive cardiomyopathy. Therefore, it poses diagnostic challenges and therapeutic dilemmas even for experienced clinicians. Case summary A 53-year-old patient developed a zoster infection with pericardial effusion 9 months after HT for idiopathic dilated cardiomyopathy. Two months later, he presented with leg oedema and ascites and was treated by diuretics for volume overload. He was readmitted 8 months later with features of right heart failure. Multimodal imaging investigations were suggestive of CP. He successfully recovered after a radical pericardiectomy. Discussion Constrictive pericarditis is a rare complication in HT. Heart transplant recipients (HTR) with a history of post-operative pericardial effusion, or with rejection episodes are at high risk of developing CP. Differentiating CP from other conditions that cause apparent congestive heart failure in HTR is challenging. Management of CP is mainly surgical pericardiectomy.

Heart transplantation (HT) from donation after circulatory death (DCD) is a promising alternative to expand the heart donor pool. Cold storage can be used in a strategy to successfully retrieve and transplant DCD hearts after reconditioning using normothermic regional perfusion for distant procurement. Herein, we present the first report of a pediatric DCD heart reconditioned with normothermic regional perfusion, preserved using only cold storage while being transported to a neighboring center, and then successfully transplanted after nearly 2 hours of cold static storage. If supported by an appropriate trial, this finding could obviate the need to use expensive perfusion devices for short interhospital distances for DCD heart transportation and stimulate more centers across the world to embrace DCD HT. ispartof: JOURNAL OF HEART AND LUNG TRANSPLANTATION vol:38 issue:10 pages:1112-1115 ispartof: location:United States status: published

Aims: To investigate whether BM-573 ( N-tert -butyl-N' -[2-(4'-methylphenylamino)-5-nitrobenzenesulfonyl]urea), an original combined thromboxane A 2 synthase inhibitor and receptor antagonist, prevents reperfusion injury in acutely ischemic pig s. Methods: Twelve animals were randomly divided in two groups: a control group (n = 6) intravenously infused with vehicle, and a BM-573 -treated group ( n = 6) infused with BM-573 (10 mgkg -1 h -1 ). In both groups, the left anterior descending (LAD ) coronary artery was occluded for 60 min and reperfused for 240 min. Either vehicl e or BM-573 was infused 30 min before LAD occlusion and throughout the experiment. Platelet aggregation ind uced by arachidonic acid ex vivo measured was prevented by BM-573. Results: In both groups, LAD occlusion decreased cardiac output, ejection fraction, slope of stroke work—end-diastolic volume relationship, and induced end-systolic pressure-volume relationship (ESPVR) rightward shift, while left ventricular afterload i ncreased. Ventriculo-arterial coupling and mechanic al efficiency decreased. In both groups, reperfusion further decr eased cardiac output and ejection fraction, while ES PVR displayed a further rightward shift. Ventriculo-art erial coupling and mechanical efficiency remained i mpaired. Area at risk, evidenced with Evans blue, was 33.2 ± 3.4% of the LV mass (LVM) in both groups, and mean infarct size, revealed by triphenyltetrazolium chlo ride (TTC), was 27.3 ± 2.6% of the LVM in the BM-573treated group (NS). Histological examination and im munohistochemical identification of desmin revealed necrosis in the anteroseptal region similar in both groups, while myocardial ATP dosages and electron microscopy also showed that BM-573 had no cardioprotective effect. Conclusions: These data suggest that BM573 failed to prevent reperfusion injury in acutely ischemic pigs.

AIM: To report the experience of the CHU Sart Tilman, University of Liege, Belgium, in the management of appendiceal carcinoid tumor. METHODS: A retrospective review of 1237 appendectomies performed in one single centre from January 2000 to May 2004, was undertaken. Analysis of demographic data, clinical presentation, histopathology, operative reports and outcome was presented. RESULTS: Among the 1237 appendectomies, 5 appendiceal carcinoid tumors were identified (0.4%) in 4 male and 1 female patients, with a mean age of 29.2 years (range: 6-82 years). Acute appendicitis was the clinical presentation for all patients. Four patients underwent open appendectomy and one a laparoscopic procedure. One patient was reoperated to complete the excision of mesoappendix. All tumors were located at the tip of the appendix with a mean diameter of 0.6 cm (range: 0.3-1.0 cm). No adjuvant therapy was performed. All patients were alive and disease-free during a mean follow-up of 33 mo. CONCLUSION: Appendiceal carcinoid tumor most often presents as appendicitis. In most cases, it is found incidentally during appendectomies and its diagnosis is rarely suspected before histological examination. Appendiceal carcinoid tumor can be managed by simple appendectomy and resection of the mesoappendix, if its size is ≤ 1 cm.