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Combined multimodal therapy in high-risk patients with chronic thromboembolic pulmonary hypertension and both distal and proximal lesions: A prospective observational cohort study 多模式联合治疗慢性血栓栓塞性肺动脉高压及远端和近端病变的高危患者:一项前瞻性观察队列研究。
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-08-20 DOI: 10.1016/j.healun.2025.08.011
J.N. Andarelli , J. Issard , T. Lacoste-Palasset , I. Mallak , B. Gerardin , S. Dolidon , D. Fabre , G. Dauriat , T. Genty , D. Mitilian , O. Mercier , M. Jevnikar , X. Jaïs , M. Humbert , P. Brenot , E. Fadel

Background

Treatments for chronic thromboembolic pulmonary hypertension (CTEPH) include PH-specific pharmacotherapy (PHSP), balloon pulmonary angioplasty (BPA), and pulmonary endarterectomy (PEA). We evaluated a sequential multimodal strategy (SMS) combining PHSP, BPA, and PEA in selected high-surgical-risk patients with distal lesions in one lung and proximal lesions in the other.

Methods

In this prospective observational study, patients were selected to the SMS by a multidisciplinary panel, based on hemodynamic severity, location of lesions, and comorbidity profile. Characteristics and complications of procedures were collected. Clinical, laboratory, and hemodynamic data were compared at baseline, before BPA, before PEA, and 6 months after PEA.

Results

We enrolled 61 patients, aged 61.9 ± 13.0 years, between 2017 and 2023. At baseline, mean pulmonary artery pressure (mPAP), cardiac output (CO), and pulmonary vascular resistance (PVR) were 49.0 ± 11.7 mmHg, 4.3 ± 1.2 L/min and 9.9 ± 4.0 WU, respectively. The most common complications were hemoptysis (13.1%) and pulmonary artery dissection (6.5%) for BPA and acute kidney injury (34.4%) and reperfusion pulmonary edema (31.1%) for PEA. The New York Heart Association functional class improved significantly and mPAP and PVR decreased significantly after each step of the strategy. Compared to baseline, the mPAP decrease was −49.4% ± 16.7% and the PVR decrease was −69.3% ± 15.9%. Three patients died in the first 2 months following surgery. The overall survival rate 14 months after PEA was 95%.

Conclusion

Our multimodal strategy was safe and effective in selected patients with severe CTEPH in whom upfront PEA was deemed unacceptably hazardous due to a high surgical risk and mixed anatomical lesions.
背景:慢性血栓栓塞性肺动脉高压(CTEPH)的治疗包括ph特异性药物治疗(PHSP)、球囊肺血管成形术(BPA)和肺动脉内膜切除术(PEA)。我们评估了一种顺序多模式策略(SMS),结合PHSP, BPA和PEA,选择了一个肺远端病变和另一个肺近端病变的高危手术患者。方法在这项前瞻性观察性研究中,根据血流动力学严重程度、病变位置和合并症概况,由多学科小组选择患者进行SMS。收集手术特点及并发症。临床、实验室和血流动力学数据在基线、BPA前、PEA前和PEA后6个月进行比较。结果我们在2017 - 2023年间纳入61例患者,年龄61.9±13.0岁。基线时,平均肺动脉压(mPAP)、心输出量(CO)和肺血管阻力(PVR)分别为49.0±11.7 mmHg、4.3±1.2 L/min和9.9±4.0 WU。最常见的并发症是BPA的咯血(13.1%)和肺动脉夹层(6.5%),PEA的急性肾损伤(34.4%)和再灌注肺水肿(31.1%)。纽约心脏协会功能分级显著提高,mPAP和PVR显著降低。与基线相比,mPAP降低-49.4%±16.7%,PVR降低-69.3%±15.9%。三名患者在手术后的头两个月内死亡。PEA术后14个月的总生存率为95%。结论:我们的多模式策略对于选择的严重CTEPH患者是安全有效的,这些患者由于高手术风险和混合解剖病变而被认为是不可接受的危险。
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引用次数: 0
Fluoroless bedside implantation of the ProtekDuo cannula: Clinical experience at a tertiary care center ProtekDuo无氟床边植入套管:三级护理中心的临床经验。
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-09-23 DOI: 10.1016/j.healun.2025.09.005
Pasquale Nardelli MD , Savino Altizio MD , Evgeny Fominskiy MD , Alessandro Ortalda MD , Luca Baldetti MD , Claudia Francescon PT , Silvia Ajello MD , Anna Mara Scandroglio MD
The ProtekDuo dual-lumen cannula allows percutaneous support in right ventricular failure with or without gas exchange impairments. However, positioning of the device is resource demanding. The usual approach requires a fluoroscopy–equipped operating room, possibly limiting its wider and timely adoption. We report our initial experience with bedside, fluoroless ProtekDuo implantation under transesophageal echocardiography (TEE) guidance in a tertiary care national referral center. Eight critically ill patients underwent bedside ProtekDuo placement for right ventricular dysfunction or acute respiratory distress syndrome with right ventricular failure. All procedures were completed successfully without procedural complications. Our findings demonstrate that bedside, TEE-guided, fluoroless ProtekDuo cannulation is feasible and safe, potentially expanding access to advanced mechanical circulatory support.
ProtekDuo双腔插管允许在有或没有气体交换损伤的右心室衰竭中进行经皮支持。然而,设备的定位是需要资源的。通常的方法需要配备透视镜的手术室,这可能限制了其更广泛和及时的采用。我们报告了我们在三级保健国家转诊中心经食管超声心动图(TEE)指导下床边无氟ProtekDuo植入的初步经验。8例危重患者因右室功能障碍或急性呼吸窘迫综合征合并右室衰竭接受床边ProtekDuo放置。所有手术均顺利完成,无手术并发症。我们的研究结果表明,床边、tee引导、无氟的ProtekDuo插管是可行和安全的,有可能扩大获得先进机械循环支持的途径。
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引用次数: 0
ISHLT Statement on Vaccines in Transplant Recipients 国际移植学会关于移植受者疫苗的声明。
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-10-08 DOI: 10.1016/j.healun.2025.09.006
Jennifer K. Chow MD, MD, FAST, FIDSA , Neha Bansal MD
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引用次数: 0
Center experience is associated with greater survival following donation after circulatory death heart transplantation 中心经验与循环死亡心脏移植术后捐赠后更高的生存率相关
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-08-26 DOI: 10.1016/j.healun.2025.08.015
Brian E. Woolley BS , Yeahwa Hong MD, PhD , Umar Nasim BS , Nidhi Iyanna MPH , Ander Dorken-Gallastegi MD , Samantha N. Machinski BA , Gavin W. Hickey MD , Mary E. Keebler MD , Edward T. Horn PharmD , David J. Kaczorowski MD

Background

Higher center volume has been associated with improved outcomes in solid organ transplantation. However, the impact of center experience on donation after circulatory death (DCD) heart transplantation outcomes remains unclear. This study evaluates the association between cumulative DCD center experience and DCD post-transplant survival.

Methods

The United Network for Organ Sharing registry was queried for adult recipients who underwent DCD heart transplantation from January 1, 2019 to December 31, 2023. Recipients were stratified by cumulative DCD center experience into low (≤10), intermediate (11-24), and high (≥25) transplant volume centers. The primary outcome was 1-year post-transplant survival. A restricted cubic spline (RCS) model was used to assess the volume-outcome relationship.

Results

A total of 1,114 DCD heart transplant recipients across 59 centers were included. Low cumulative DCD volume was associated with lower 1-year DCD post-transplant survival compared to high-volume centers when controlling for confounders (89.0% vs 92.9%, p = 0.025), independent of donation after brain death (DBD) center volume and center-level DBD post-transplant survival. RCS showed decreasing 1-year post-transplant mortality with increasing DCD volume up to 20 DCD cases, beyond which survival gains plateaued. Normothermic regional perfusion was associated with similar survival compared to direct procurement and perfusion across all center volume categories.

Conclusions

Higher cumulative DCD center experience is associated with improved 1-year DCD post-transplant survival independent of DBD center volume or performance. Survival gains plateau after approximately 20 cumulative DCD cases. These findings highlight the importance of DCD-specific institutional experience and support the expansion of DCD heart transplantation to more centers while maintaining favorable outcomes.
背景:较高的中心容积与实体器官移植预后的改善有关。然而,中心经验对循环死亡(DCD)心脏移植后捐赠结果的影响尚不清楚。本研究评估累积DCD中心经验与DCD移植后存活之间的关系。方法:查询UNOS注册表中2019年1月1日至2023年12月31日接受DCD心脏移植的成人受者。根据累积的DCD中心经验将受者分为低(≤10)、中(11-24)和高(≥25)移植容量中心。主要终点为移植后1年生存率。采用限制性三次样条(RCS)模型评估体积与预后的关系。结果:59个中心共纳入1114名DCD心脏移植受者。当控制与脑死亡后捐赠(DBD)中心容量和中心水平DBD移植后生存率无关的混杂因素(89.0% vs 92.9%, p=0.025)时,与高容量中心相比,低累积DCD容量与移植后1年DCD生存率较低相关。RCS显示,移植后1年死亡率随着DCD容量的增加而下降,最多可达20例DCD,超过这一数字,生存增长趋于平稳。在所有中心容量类别中,与直接获取和灌注(DPP)相比,常温区域灌注(NRP)与相似的生存率相关。结论:较高的DCD中心累积经验与移植后1年DCD生存率相关,与DBD中心容量或性能无关。在累积约20例DCD病例后,生存率趋于稳定。这些发现强调了DCD特定机构经验的重要性,并支持将DCD心脏移植扩展到更多中心,同时保持良好的结果。
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引用次数: 0
Predictors and outcomes of severe primary graft dysfunction in heart transplantation: United States cohort analysis 心脏移植中严重原发性移植物功能障碍的预测因素和结果:美国队列分析。
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-08-20 DOI: 10.1016/j.healun.2025.07.036
Peter D. Cho BS , Hedwig Zappacosta BS , Joseph Song BA , John P. White BA , Stephanie McKay MPH , Donatello Telesca PhD , Malini Daniel MD , Abbas Ardehali MD

Background

This study aims to assess predictors and outcomes of severe primary graft dysfunction (PGD) in a contemporary United States cohort.

Methods

The United Network for Organ Sharing database was retrospectively reviewed for isolated adult heart transplant recipients (September 2023-March 2025). The population was stratified into severe PGD (left or biventricular dysfunction within 24 hours following transplantation that requires mechanical circulatory support [MCS]) and control cohorts (all other recipients). Predictors of severe PGD were identified using multivariable logistic regression. The severe PGD cohort was further classified into transient severe primary graft dysfunction (TPGD, MCS off by 72 hours) vs. persistent severe primary graft dysfunction (PPGD, remained on MCS at 72 hours). The Kaplan-Meier method was used to compare 3-month survival between groups.

Results

During the study interval, 5,097 heart transplant recipients were identified in the United States, with 6.6% (n = 338) developing severe PGD. Predictors for severe PGD included pretransplant extracorporeal membrane oxygenation (adjusted odds ratio [AOR]: 2.55, p < 0.001), hearts from donation after circulatory death (AOR: 2.13, p < 0.001), donor acidemia before procurement (AOR: 2.01, p < 0.001), and recipient history of sternotomy (AOR: 1.83, p < 0.001). The severe PGD group experienced lower 3-month survival than the control group (74.4% vs 96.8%, p < 0.001). Among severe PGD cases, 36.7% (n = 124) experienced TPGD and had higher 3 month survial than PPGD group (88.0% vs 67.2%, p < 0.001).

Conclusions

Severe PGD following heart transplantation is associated with high early mortality. Consideration of risk factors in donor and recipient matching may mitigate the incidence of severe PGD.
本研究旨在评估当代美国队列中严重原发性移植物功能障碍(PGD)的预测因素和结果。方法回顾性分析美国器官共享网络数据库中孤立的成人心脏移植受者(2023年9月- 2025年3月)。人群被分为严重PGD(移植后24小时内左室或双室功能障碍,需要机械循环支持[MCS])和对照队列(所有其他接受者)。使用多变量逻辑回归确定严重PGD的预测因子。严重PGD组进一步分为短暂性严重原发性移植物功能障碍(TPGD, MCS关闭72小时)和持续性严重原发性移植物功能障碍(PPGD, 72小时仍在MCS上)。采用Kaplan-Meier法比较各组3个月生存率。结果在研究期间,美国共发现5097例心脏移植受者,其中6.6% (n = 338)发生严重PGD。严重PGD的预测因素包括移植前体外膜氧合(校正优势比[AOR]: 2.55, p < 0.001)、循环死亡后捐赠心脏(AOR: 2.13, p < 0.001)、供体获取前酸血症(AOR: 2.01, p < 0.001)和受体胸骨切开术史(AOR: 1.83, p < 0.001)。重度PGD组3个月生存率低于对照组(74.4% vs 96.8%, p < 0.001)。重度PGD患者中,36.7% (n = 124)发生了TPGD, 3个月生存率高于PPGD组(88.0% vs 67.2%, p < 0.001)。结论心脏移植术后严重PGD与高早期死亡率相关。考虑供体和受体匹配的危险因素可能会减轻严重PGD的发生率。
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引用次数: 0
Information for Readers 读者资讯
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-12-13 DOI: 10.1016/S1053-2498(25)02445-3
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引用次数: 0
Direct oral anticoagulants in left ventricular assist devices: Where are we now? 直接口服抗凝剂用于左心室辅助装置:进展如何?
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-09-12 DOI: 10.1016/j.healun.2025.08.025
Leticia Blazquez-Arroyo , Guglielmo Gallone , Luca Baldetti , Mario Gramegna , Thomas Castelein , Riet Dierckx , Francesca Fiorelli , Diana Gorog , Eftychia Galiatsou , Haifa Lyster , Sascha Ott , Brijesh Patel , Alex Rosenberg , Dan Schelfaut , Lorenz Van der Linden , Jeroen Dauw , Ward Heggermont , Marc Vanderheyden , Stijn Wouters , Maria Monteagudo-Vela , Christophe Vandenbriele MD, PhD
Despite significant advances in left ventricular assist device (LVAD) technology, particularly with the HeartMate 3, hemocompatibility-related adverse events (HRAEs), especially bleeding, remain common due to complex patient-device interactions and the need for anticoagulation. This has prompted interest in exploring new and less aggressive antithrombotic strategies. Direct oral anticoagulants (DOACs) have gained attention for their predictable pharmacokinetics, fixed dosing, and lower bleeding risk in other populations. Among them, apixaban has emerged as the most extensively studied DOAC in the HeartMate 3 setting, standing out as a promising alternative to VKAs in carefully selected patients, with the potential to lower bleeding risk without compromising thrombotic protection. However, available evidence remains limited by small sample sizes, short follow-up, and selected patient populations. Important gaps persist regarding optimal dosing, timing of initiation, level monitoring, and safety in vulnerable subgroups, particularly patients awaiting heart transplantation.
This review synthesizes the current evidence on DOAC use in HeartMate 3-supported patients, provides practical guidance for real-world decision-making, and highlights areas where further research is needed. Although more data are required to define its role, apixaban is increasingly positioned as a promising VKA alternative in LVAD-patients and could ultimately reshape anticoagulation practice in this population.
尽管左心室辅助装置(LVAD)技术取得了重大进展,特别是HeartMate 3,但由于复杂的患者-设备相互作用和抗凝的需要,与血液相容性相关的不良事件(HRAEs),特别是出血,仍然很常见。这引起了人们对探索新的和不太积极的抗血栓策略的兴趣。直接口服抗凝剂(DOACs)因其可预测的药代动力学、固定剂量和在其他人群中较低的出血风险而受到关注。其中,阿哌沙班已成为HeartMate 3环境中研究最广泛的DOAC,在精心挑选的患者中作为vka的有希望的替代品脱颖而出,具有降低出血风险而不影响血栓保护的潜力。然而,现有证据仍然受到样本量小、随访时间短和选定患者人群的限制。在易感亚组,特别是等待心脏移植的患者中,关于最佳剂量、起始时间、水平监测和安全性的重要差距仍然存在。本综述综合了目前在HeartMate 3支持患者中使用DOAC的证据,为现实世界的决策提供了实用指导,并强调了需要进一步研究的领域。虽然需要更多的数据来确定其作用,但阿哌沙班越来越多地被定位为lvad患者有希望的VKA替代方案,并可能最终重塑这一人群的抗凝实践。
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引用次数: 0
Survival and primary graft dysfunction after ex-vivo lung perfusion: Why timing matters 离体肺灌注后的生存和原发性移植物功能障碍:为什么时间很重要。
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-09-04 DOI: 10.1016/j.healun.2025.08.019
Awab Ahmad MD, Aaron M. Williams MD
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引用次数: 0
Impact of evolocumab on coronary physiology and microstructure in de-novo heart transplant recipients Evolocumab对从头心脏移植受者冠状动脉生理和微观结构的影响。
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-08-20 DOI: 10.1016/j.healun.2025.07.037
Salma Raghad Karim , Niels Møller Jensen , Emil Nielsen Holck , Tor Skibsted Clemmesen , Evald Høj Christiansen , Lars Jakobsen , Zhi Chen , Milan Sonka , Kristjan Karason , Kaspar Broch , Ole Geir Solberg , Hans Eiskjær

Background

Cardiac allograft vasculopathy, characterized by arterial intima thickening and microvascular dysfunction, compromises survival after heart transplantation. We investigated the impact of evolocumab on invasive coronary physiology and microstructure after de-novo transplantation.

Methods

In the EVOLVD trial (NCT03734211), the effect of 12 months of evolocumab vs placebo on maximal coronary intimal thickness was assessed using intracoronary ultrasound. For this substudy, optical coherence tomography (OCT), fractional flow reserve (FFR), coronary flow reserve (CFR), microvascular resistance reserve (MRR), and index of microcirculatory resistance (IMR) were performed at baseline (4-8 weeks post-transplant) and at 12 months post-transplant.

Results

Seventy-five de-novo heart transplant recipients were included, randomized to placebo (n = 36) or evolocumab (n = 39). Over 12 months, no between-group differences were observed in changes in coronary physiology (FFR: Δ 0.001 [IQR −0.03 to 0.02], p = 0.42; CFR: Δ 0.59 [IQR −1.33 to 1.90], p = 0.69; IMR: Δ 0.76 [IQR −6.86 to 8.32], p = 0.09; MRR: Δ 0.19 [IQR −1.85 to 2.60], p = 0.70) or coronary microstructure (lumen area: Δ −1.37 mm² [IQR −3.53 to 0.09], p = 0.38; intima area: Δ 0.05 mm² [IQR 0.02 to 0.17], p = 0.88. Among all patients, OCT showed a lumen area decrease of −1.37 [IQR −3.53 to −0.69] mm² (p < 0.01) and intima area increasse of 0.04 [IQR 0.01 to 0.17] mm² (p < 0.01) from baseline to follow-up.

Conclusions

Evolocumab did not affect coronary physiology or OCT measurements 12 months after de-novo heart transplantation. OCT revealed progressive intimal proliferation and luminal narrowing in both groups, while coronary physiology remained unchanged and did not differ between treatment arms.
背景:同种异体心脏移植血管病变(CAV)以动脉内膜增厚和微血管功能障碍为特征,影响心脏移植后的生存。我们的目的是研究evolocumab对重新移植后侵入性冠状动脉生理和微观结构的影响。方法在EVOLVD试验(NCT03734211)中,通过冠状动脉内超声评估12个月evolocumab与安慰剂对最大冠状动脉内膜厚度的影响。在本亚研究中,光学相干断层扫描(OCT)和分数血流储备(FFR)、冠状动脉血流储备(CFR)、微血管阻力储备(MRR)和微循环阻力指数(IMR)在基线(移植后4至8周)和移植后12个月进行。该亚研究包括75名新心脏移植受者,随机分为安慰剂组(n=36)和evolocumab组(n=39)。12个月后,冠状动脉生理变化(FFR: Δ 0.001 [IQR-0.03至0.02],p=0.42; CFR: Δ 0.59 [IQR -1.33至1.90],p=0.69; IMR: Δ 0.76 [IQR -6.86至8.32],p=0.09; MRR: Δ 0.19 [IQR -1.85至2.60],p=0.70)或冠状动脉微结构(管腔面积:Δ -1.37 mm²[IQR -3.53至0.09],p=0.38;内膜面积:Δ 0.05 mm²[IQR- 0.02至0.17],p=0.88)无组间差异。未观察到组内FFR、CFR或IMR的显著变化。在所有纳入的患者中,OCT显示从基线到随访,管腔面积减少了-1.37 [IQR -3.53至-0.69]mm²(p<0.01),内膜面积增加了0.04 [IQR 0.01至0.17]mm²(p<0.01)。结论:evolocumab治疗对心脏移植术后12个月的冠状动脉生理或OCT测量没有影响。OCT显示两组均有进行性内膜增生和管腔狭窄。从基线到随访,冠状动脉生理学保持不变,治疗组之间没有差异。
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引用次数: 0
Diagnostic significance of intragraft donor–specific anti-HLA antibodies in pulmonary antibody–mediated rejection 骨髓内供体特异性hla抗体在肺抗体介导排斥反应中的诊断意义。
IF 6 1区 医学 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2026-01-01 Epub Date: 2025-08-21 DOI: 10.1016/j.healun.2025.08.007
Sandrine Hirschi MD , Guilaine Hell PharmD , Deborah Jo Levine MD , Benjamin Coiffard MD, PhD , Francois Severac MD, MSc , Clement Picard MD , Vincent Bunel MD , Jerome Le Pavec MD, PhD , Arnaud Essaydi PharmD , Martine Reynaud-Gaubert MD, PhD , Antoine Roux MD, PhD , Olivier Brugiere MD, PhD , Benjamin Renaud-Picard MD, PhD , Romain Kessler MD, PhD , Federica Pezzuto MD, PhD , Jean-Luc Taupin PharmD, PhD , Fiorella Calabrese MD

Background

The diagnosis of pulmonary antibody–mediated rejection (AMR) remains challenging with lack of specific defining features. This study evaluated the diagnostic and prognostic significance of intragraft anti human leukocyte antigen (HLA) donor–specific antibodies (gDSA) in pulmonary AMR.

Methods

This multicenter prospective study enrolled adult lung transplant recipients (LTR) with serum anti-HLA DSA (sDSA) >1,000 Luminex mean fluorescence intensity (MFI). Transbronchial biopsies (TBBx) were obtained for both standard histologic analysis and cryopreservation to detect anti-HLA class I and II gDSA, using Luminex single-antigen beads assay. Clinical follow-up was conducted over 24 months. An expert pathologist reviewed all TBBx using a predefined checklist. A blinded adjudication panel categorized clinical diagnoses as possible, probable, or definite AMR and non-AMR conditions. The primary objective was to assess gDSA sensitivity and specificity for AMR diagnosis. Additionally, we compared graft outcomes between gDSA+ vs gDSA− patients.

Results

Seventy-seven LTR from 5 centers were included from August 2019 to July 2022. Twenty-nine patients were classified as probable or definite clinical/subclinical AMR. Among the cohort, 13 had positive gDSA. gDSA sensitivity, specificity, and positive predictive value for AMR diagnosis were 34.4%, 93.7%, and 76.9%, respectively. gDSA diagnostic performance for AMR was better than sDSA ≥12,500 MFI (sensitivity 37.9%, specificity 85.4%, and positive predictive value 61.1%). Event-free survival analysis (10% forced expiratory volume in 1 second decline or graft loss) showed no significant differences by gDSA positivity. Limited biopsy sampling and spatial heterogeneity may have biased sensitivity and prognostic performances of the technique.

Conclusions

gDSA might offer a specific complementary support for the clinical diagnosis of AMR following lung transplantation.
肺抗体介导的排斥反应(AMR)的诊断仍然具有挑战性,缺乏特定的定义特征。本研究评估了抗人类白细胞抗原(HLA)供体特异性抗体(gDSA)在肺AMR中的诊断和预后意义。方法本研究是一项多中心前瞻性研究,招募血清抗hla - DSA (sDSA)水平为1000 Luminex平均荧光强度(MFI)的成人肺移植受者(LTR)。经支气管活检(TBBx)进行标准组织学分析和冷冻保存,使用Luminex单抗原珠试验检测抗hla I类和II类gDSA。临床随访超过24个月。病理学专家使用预先确定的检查表对所有TBBx进行了检查。一个盲法评审小组将临床诊断分为可能的、可能的或确定的AMR和非AMR。主要目的是评估gDSA对AMR诊断的敏感性和特异性。此外,我们比较了gDSA+和gDSA-患者的移植结果。结果2019年8月至2022年7月纳入5个中心的77例LTR。29例患者被归类为可能或确定的临床/亚临床AMR。其中13例gDSA阳性。gDSA对AMR诊断的敏感性、特异性和阳性预测值分别为34.4%、93.7%和76.9%。gDSA对AMR的诊断性能优于sDSA≥12500 MFI(敏感性37.9%,特异性85.4%,阳性预测值61.1%)。无事件生存分析(1秒内用力呼气量下降10%或移植物丢失)显示gDSA阳性无显著差异。有限的活检取样和空间异质性可能对该技术的敏感性和预后性能有偏倚。结论sgdsa可能为肺移植术后AMR的临床诊断提供特定的补充支持。
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引用次数: 0
期刊
Journal of Heart and Lung Transplantation
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