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Ácidos Nucleicos Libres de Células , Rechazo de Injerto , Trasplante de Órganos , Humanos , Rechazo de Injerto/diagnóstico , Rechazo de Injerto/inmunología , Rechazo de Injerto/sangre , Ácidos Nucleicos Libres de Células/sangre , Trasplante de Órganos/efectos adversos , Donantes de Tejidos , Trasplante de Corazón/efectos adversos , Biomarcadores/sangreRESUMEN
Diastolic dysfunction (DD) is a prevalent and clinically significant complication after heart transplantation (HTX). We aimed to characterize the diastolic function of HTX recipients with both short-term and long-term follow-ups by applying left atrial (LA) deformation analysis. We consecutively enrolled and followed up with 33 HTX patients. Three assessments were performed one month, 3-5 months, and 3-5 years after surgery. Beyond conventional echocardiographic measurements, apical four-chamber views optimized for speckle tracking analysis were acquired and post-processed by dedicated software solutions (TomTec AutoStrain LA and LV). Left atrial phasic functions were characterized by reservoir, conduit, and contraction strains. We categorized diastolic function according to current guidelines (normal diastolic function, indeterminate, DD). At the first assessment, nine (27%) patients were in the DD category, and eleven (33%) were indeterminate. At the second assessment, only one patient (3%) remained in the DD category and six (18%) were indeterminate. At the third assessment, 100% of patients were categorized as having normal diastolic function. LA reservoir strain gradually increased over time. LA contraction strain significantly improved from the second to the third assessment. We found a correlation between the LA reservoir strain and NT-proBNP (r = 0.40, p < 0.05). DD is prevalent immediately after HTX but rare until the end of the first postoperative quarter. Speckle tracking analysis enables the characterization of LA phasic functions that may reflect both short- and long-term changes in diastolic function and correlate with NT-proBNP.
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BACKGROUND: Frailty has been proven to be associated with mortality after orthotopic heart transplantation (OHT). The aim of our study was to determine the impact of frailty on mortality in the current era using pretransplant mechanical cardiac support (MCS). METHODS: We retrospectively calculated the frailty scores of 471 patients undergoing OHT in a single institution between January 2012 and August 2022. The outcome was all-cause mortality. RESULTS: The median survival time was 1987 days (IQR: 1487 days) for all patients. In total, 266 (56.5%) patients were categorized as nonfrail, 179 (38.0%) as prefrail, and 26 (5.5%) as frail. The survival rates were 0.73, 0.54, and 0.28 for nonfrail, prefrail, and frail patients, respectively. The frailty score was associated with mortality [HR: 1.34 (95% CI: 1.22-1.47, p < 0.001)]. Among the components of the frailty score, age above 50 years, creatinine ≥ 3.0 mg/dL or prior dialysis, and hospitalization before OHT were independently associated with mortality. Continuous-flow left ventricular assist devices (CF-LVAD) were associated with an increased risk for all-cause mortality [AHR: 1.80 (95% CI: 1.01-3.24, p = 0.047)]. CONCLUSIONS: The components of the frailty score were not equally associated with mortality. Frailty and pretransplant MCS should be included in the risk estimation.
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Mentores , Grupo Paritario , Adulto , Humanos , Evaluación de Programas y Proyectos de SaludRESUMEN
BACKGROUND: Heart transplant (HTX) recipients are prone to develop complications after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Vaccination is often ineffective due to weaker immunogenicity. In this high-volume single-center study, we aimed to determine factors influencing seroconversion after vaccination and predictors of severe SARS-CoV-2 infection. METHODS: Two hundred twenty-nine HTX recipients were enrolled. Type of the first two vaccine doses included messenger RNA (mRNA), vector, and inactivated vaccines. We carried out analyses on seroconversion after the second and third doses of vaccination and on severity of infection. Antispike protein SARS-CoV-2 immunoglobulin G (IgG) was measured after the second and third vaccines and serostatus was defined. Effect of the first two vaccine doses was studied on patients who did not suffer SARS-CoV-2 infection before antibody measurement (n = 175). The effectivity of the third vaccine was evaluated among seronegative recipients after the second vaccine (n = 53). Predictors for severe infection defined as pneumonia, hospitalization or death were assessed in all patients who contracted SARS-CoV-2 infection (n = 92). RESULTS: 62% of the recipients became seropositive after the second vaccination. Longer time between HTX and vaccination (odds ratio [OR]: 2.35) and mRNA vaccine (OR: 4.83) were predictors of seroconversion. 58% of the nonresponsive patients became seropositive after receiving the third vaccine. Male sex increased the chance of IgG production after the third dose (OR: 5.65). Clinical course of SARS-CoV-2 infection was severe in 32%. Of all parameters assessed, only seropositivity before infection was proven to have a protective effect against severe infection (OR: 0.11). CONCLUSIONS: We found that longer time since HTX, mRNA vaccine type, and male sex promoted seroconversion after SARS-CoV-2 vaccination in HTX recipients. Seropositivity-but not the number of vaccine doses-seemed to be protective against severe SARS-CoV-2 infection. Screening of HTX patients for anti-SARS-COV-2 antibodies may help to identify patients at risk for severe infection.
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Vacunas contra la COVID-19 , COVID-19 , Trasplante de Corazón , Humanos , Masculino , COVID-19/epidemiología , COVID-19/prevención & control , Vacunas contra la COVID-19/uso terapéutico , Inmunoglobulina G , Vacunas de ARNm , Seroconversión , VacunaciónRESUMEN
INTRODUCTION: Successful mechanical circulatory support is influenced by various factors, which are difficult or impossible to control. For ideal functioning of the left ventricular assist device inflow-cannula, its axis should be close to parallel with the septum, facing the mitral valve within the left ventricle. Numerous international publications discuss that deviation from optimal implantation can lead to inadequate functioning and serious complications. OBJECTIVE: Our objective was to developing a method, which, using 3D technology, anatomical and hydrodynamic data, makes optimal surgical implantation of the left ventricular assist device possible. METHOD: Data of 57 patients, receiving mechanical circulatory support at Semmelweis University, Heart and Vascular Center, were analyzed retrospectively. Results of operations performed with the patented novel navigation device (exoskeleton) were compared with results of operations performed conventionally, without navigation (control group). Following pairing based on estimated participation probability, postoperative data of 7-7 patients were compared. DICOM files from CT angiography images were used to create virtual geometries of individual hearts. Optimal inflow-cannula angle was determined through hydrodynamic simulation. Exoskeletons were printed using synthetic resin suitable for surgical purposes. Exoskeleton templates guided punch knife positioning and inflow-cannula implantation. RESULTS: Evaluation of postoperative CT angiography images showed that the angle between inflow-cannula and interventricular septum significantly differed in the exoskeleton and control groups (10.13° ± 2.69° vs. 22.87° ± 12.38°, p = 0.0208). Hydrodynamic tests found significantly lower turbulence in the exoskeleton group. Simulated turbulent kinetic energy was significantly lower in the exoskeleton group, which was 11.7 m2/s2 ± 9.39 m2/s2 vs. 49.59 m2/s2 ± 7.61 m2/s2 on average. CONCLUSION: The results suggest left ventricular assist device implantation with patented exoskeleton to be a standardizable, safe and effective method. Preliminary results suggest, that the method may facilitate individualized care, reduce surgical time and incidence of serious complications. Orv Hetil. 2023; 164(26): 1026-1033.
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Insuficiencia Cardíaca , Corazón Auxiliar , Humanos , Estudios Retrospectivos , Cánula , Simulación por Computador , Tecnología , Ventrículos Cardíacos , Insuficiencia Cardíaca/cirugíaRESUMEN
INTRODUCTION: Donor-derived cell-free DNA (dd-cfDNA) is a blood biomarker detecting graft injury with high negative predictive value. While non-invasive strategies for heart transplant (HTx) rejection surveillance are widely adopted in the United States with centralized testing, data on the feasibility of dd-cfDNA assay at the local level are lacking. Here, we report the first 6 months of experience with a local laboratory-run dd-cfDNA assay in the routine clinical surveillance setting. METHODS: Twenty-six HTx patients with stable graft function were transitioned from endomyocardial biopsy-based (EMB) to dd-cfDNA-led rejection surveillance using a commercially available next-generation sequencing-based assay. RESULTS: In the 90 samples analyzed, dd-cfDNA fraction remained continuously low in most patients, thus 88% of surveillance EMBs could be safely avoided. In the case of ≥.25% dd-cfDNA, EMB was performed. There was no missed rejection. CONCLUSION: Our data show the feasibility to analyze dd-cfDNA at the local level and successful implementation of this non-invasive surveillance method into clinical practice, thus considerably reducing the frequency of invasive surveillance EMBs.
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Ácidos Nucleicos Libres de Células , Trasplante de Corazón , Humanos , Rechazo de Injerto/diagnóstico , Rechazo de Injerto/etiología , Biomarcadores , Donantes de TejidosRESUMEN
Despite novel immunosuppressive (IS) protocols, adverse effects of IS drugs continue to have notable negative impact on patient and cardiac allograft survival after heart transplantation (HTx). Therefore, IS regimens with less toxic side effects are sorely needed. We aimed to evaluate the efficacy of extracorporeal photopheresis (ECP) in combination with tacrolimus-based maintenance IS therapy in the treatment of allograft rejection in adult HTx recipients. Indications for ECP included acute moderate-to-severe or persistent mild cellular rejection, or mixed rejection. Twenty-two patients underwent a median of 22(2-44) ECP treatments after HTx. Median duration of ECP course was 173.5(2-466) days. No relevant adverse effects of ECP were noted. Reduction of methylprednisolone doses was safe throughout the ECP course. ECP, used in conjunction with pharmacological anti-rejection therapy, had a successful reversal of cardiac allograft rejection, decreased the rates of subsequential rejection episodes and normalized the allograft function in patients completing the ECP course. Short- and long-term survivals were excellent (91% at 1 and 5 years post-ECP) and comparable to International Society for Heart and Lung Transplantation registry data on HTx recipient overall survival. In conclusion, ECP can be safely used for the treatment and prevention of cardiac allograft rejection in conjunction with traditional IS regimen.
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Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Trasplante de Corazón , Fotoféresis , Adulto , Humanos , Fotoféresis/métodos , Rechazo de Injerto/prevención & control , Trasplante Homólogo , Inmunosupresores/uso terapéutico , AloinjertosRESUMEN
BACKGROUND: Aim of this study was to describe the real-world use of extracorporeal photopheresis (ECP) and assess its impact on clinical outcomes in the modern era of heart transplantation. METHODS: Seven transplant centers from 5 European countries participated in this retrospective, observational, single-arm chart review study. All patients received ECP after heart transplantation in 2015 or later. Data were extracted from medical records between November 2020 and December 2021. RESULTS: Overall, 105 patients were enrolled and followed for an average of 2 years after initiation of ECP. Reasons to start ECP were acute cellular rejection (35.2%), rejection prevention (32.4%), mixed rejection (18.1%), and antibody-mediated rejection (14.3%). Rejection ISHLT grades improved from start to end of ECP treatment in 92% of patients treated with ECP for rejection. Of patients who started ECP to prevent rejection, 88% remained free from any rejection despite a reduction of calcineurin inhibitors. Overall survival was 95%, and no deaths were related to ECP. Safety events occurred in 18 patients, of which 13 experienced complications with venous access. CONCLUSIONS: This study, the largest European ECP study in heart transplantation, demonstrates that ECP can effectively be used to treat different rejection types and to prevent rejection in the modern era of immunosuppression. Patients with rejections who have received ECP have shown high response as measured by histological improvements in ISHLT classification. A high percentage of patients in the prevention group remained free from rejection despite reduction in immunosuppression, in particular calcineurin inhibitors.
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Trasplante de Corazón , Fotoféresis , Humanos , Estudios Retrospectivos , Inhibidores de la Calcineurina , Terapia de Inmunosupresión , Rechazo de Injerto/prevención & controlRESUMEN
INTRODUCTION: Non-invasive measurement of blood pressure in patients with a left ventricular assist device (LVAD) is challenging due to the mechanical properties of these circulatory support devices. Keeping blood pressure in a target range is crucial to reduce the risk of LVAD complications. As current assessment methods require trained personnel resulting in infrequent monitoring, devices for home-based measurements are sorely needed. OBJECTIVES: In this paper, we report a measurement method and a custom-made monitoring device based on photoplethysmography (PPG) enabling automated measurement of the mean arterial pressure (MAP) of patients with LVAD. METHODS: The method and the device were tested on 21 adult patients with LVAD, and the estimated MAP values were compared to MAP values measured simultaneously by a human expert applying the commonly used Doppler-based method. RESULTS: Results of the proposed method showed highly significant correlation with Doppler-based MAP values (R = 0.85 for inflation, p < 0.001; R = 0.96 for deflation, p<0.001). The mean difference of the proposed method to the Doppler-based MAP values was 1.48 ± 5.43 mmHg for inflation and -0.19 ± 2.71 mmHg for deflation. CONCLUSION: The results demonstrate that the proposed method is a promising direction to achieve accurate, automated, non-invasive BP measurement, applicable in home health monitoring for patients with LVAD.
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Insuficiencia Cardíaca , Corazón Auxiliar , Adulto , Humanos , Presión Sanguínea/fisiología , Corazón Auxiliar/efectos adversos , Fotopletismografía , Insuficiencia Cardíaca/diagnóstico , Insuficiencia Cardíaca/terapia , Ultrasonografía DopplerRESUMEN
Introduction: Despite the significant contribution of circumferential shortening to the global ventricular function, data are scarce concerning its prognostic value on long-term mortality. Accordingly, our study aimed to assess both left (LV) and right ventricular (RV) global longitudinal (GLS) and global circumferential strain (GCS) using three-dimensional echocardiography (3DE) to determine their prognostic importance. Methods: Three hundred fifty-seven patients with a wide variety of left-sided cardiac diseases were retrospectively identified (64 ± 15 years, 70% males) who underwent clinically indicated 3DE. LV and RV GLS, and GCS were quantified. To determine the prognostic power of the different patterns of biventricular mechanics, we divided the patient population into four groups. Group 1 consisted of patients with both LV GLS and RV GCS above the respective median values; Group 2 was defined as patients with LV GLS below the median while RV GCS above the median, whereas in Group 3, patients had LV GLS values above the median, while RV GCS was below median. Group 4 was defined as patients with both LV GLS and RV GCS below the median. Patients were followed up for a median of 41 months. The primary endpoint was all-cause mortality. Results: Fifty-five patients (15%) met the primary endpoint. Impaired values of both LV GCS (HR, 1.056 [95% CI, 1.027-1.085], p < 0.001) and RV GCS (1.115 [1.068-1.164], p < 0.001) were associated with increased risk of death by univariable Cox regression. Patients with both LV GLS and RV GCS below the median (Group 4) had a more than 5-fold increased risk of death compared with those in Group 1 (5.089 [2.399-10.793], p < 0.001) and more than 3.5-fold compared with those in Group 2 (3.565 [1.256-10.122], p = 0.017). Interestingly, there was no significant difference in mortality between Group 3 (with LV GLS above the median) and Group 4, but being categorized into Group 3 versus Group 1 still held a more than 3-fold risk (3.099 [1.284-7.484], p = 0.012). Discussion: The impaired values of both LV and RV GCS are associated with long-term all-cause mortality, emphasizing the importance of assessing biventricular circumferential mechanics. Reduced RV GCS is associated with significantly increased risk of mortality even if LV GLS is preserved.
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High inter-individual variability in tacrolimus clearance is attributed to genetic polymorphisms of CYP3A enzymes. However, due to CYP3A phenoconversion induced by non-genetic factors, continuous changes in tacrolimus-metabolizing capacity entail frequent dose-refinement for optimal immunosuppression. In heart transplant recipients, the contribution of patients' CYP3A-status (CYP3A5 genotype and CYP3A4 expression) to tacrolimus blood concentration and dose-requirement was evaluated in the early and late post-operative period. In low CYP3A4 expressers carrying CYP3A5*3/*3, the dose-corrected tacrolimus level was significantly higher than in normal CYP3A4 expressers or in those with CYP3A5*1. Modification of the initial tacrolimus dose was required for all patients: dose reduction by 20% for low CYP3A4 expressers, a 40% increase for normal expressers and a 2.4-fold increase for CYP3A5*1 carriers. The perioperative high-dose corticosteroid therapy was assumed to ameliorate the low initial tacrolimus-metabolizing capacity during the first month. The fluctuation of CYP3A4 expression and tacrolimus blood concentration (C0/D) was found to be associated with tapering and cessation of corticosteroid in CYP3A5 non-expressers, but not in those carrying CYP3A5*1. Although monitoring of tacrolimus blood concentration cannot be omitted, assaying recipients' CYP3A-status can guide optimization of the initial tacrolimus dose, and can facilitate personalized tacrolimus therapy during steroid withdrawal in the late post-operative period.
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Citocromo P-450 CYP3A/genética , Trasplante de Corazón , Inmunosupresores/uso terapéutico , Tacrolimus/uso terapéutico , Adulto , Anciano , Femenino , Expresión Génica , Humanos , Inmunosupresores/administración & dosificación , Inmunosupresores/sangre , Masculino , Persona de Mediana Edad , Polimorfismo Genético , Tacrolimus/administración & dosificación , Tacrolimus/sangre , Adulto JovenRESUMEN
BACKGROUND: Mycotic aortic pseudoaneurysm is a rare complication after heart transplantation (HTX) with remarkable mortality. Intrathoracic infection is a well-documented predisposing factor for this disease. Staphylococcus aureus, Pseudomonas aeruginosa or Candida species are commonly isolated from resected specimens of the pseudoaneurysms. We demonstrate a unique case of mycotic pseudoaneurysm caused by presumably donor-derived Pseudomonas infection in a heart transplant recipient. CASE PRESENTATION: Our 67-year-old male patient treated with diabetes mellitus underwent HTX. The donor suffered from epiglottic abscess and pneumonia with known microorganisms including Pseudomonas, therefore both the donor and recipient received targeted antimicrobial therapy and prophylaxis. Five months after the uneventful HTX, lab test of the asymptomatic patient showed moderate, increasing C-reactive protein level without obviuos source of infection. Chest computed tomography showed a large (90 mm) saccular dilatation of the tubular portion of ascending aorta. Urgent surgical intervention identified a pseudoaneurysm, histological examinations and cultures of the resected aorta verified Pseudomonas aeruginosa aortitis, while all blood cultures remained negative. Retrospective interrogation of other transplanted organs of the donor supported donor-derived infection as the transport fluid of the right kidney grew Pseudomonas. The patient received 3 weeks of ceftazidime followed by 7 months of oral ciprofloxacin therapy. One year after the operation the patient was asymptomatic with normal inflammatory markers. CONCLUSIONS: Donor-derived infection is a rare but potential cause of aortitis. Early diagnosis, surgical intervention and adjuvant antibiotic therapy seem to be the keys to successful management of mycotic pseudoaneurysms after HTX.
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Aneurisma Falso , Aneurisma Infectado , Trasplante de Corazón , Infecciones por Pseudomonas , Anciano , Aneurisma Falso/diagnóstico por imagen , Aneurisma Falso/etiología , Aneurisma Infectado/diagnóstico por imagen , Aneurisma Infectado/etiología , Aorta , Trasplante de Corazón/efectos adversos , Humanos , Masculino , Infecciones por Pseudomonas/diagnóstico , Infecciones por Pseudomonas/tratamiento farmacológico , Infecciones por Pseudomonas/etiología , Estudios RetrospectivosRESUMEN
Since the establishment of highly active antiretroviral therapy, survival rates have improved among patients with human immunodeficiency virus infection giving them the possibility to become transplant candidates. Recent publications revealed that human immunodeficiency virus-positive heart transplant recipients' survival is similar to non-infected patients. We present the case of a 40-year-old human immunodeficiency virus infected patient, who was hospitalized due to severely decreased left ventricular function with a possible aetiology of acute myocarditis, that has later been confirmed by histological investigation of myocardial biopsy. Due to rapid progression to refractory cardiogenic shock, extracorporeal membrane oxygenation implantation had been initiated, which was upgraded to biventricular assist device later. On the 35th day of upgraded support, the patient underwent heart transplantation uneventfully. Our clinical experience confirms that implementation of temporary mechanical circulatory support and subsequent cardiac transplantation might be successful in human immunodeficiency virus-positive patients even in case of new onset, irreversible acute heart failure.
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Trasplante de Corazón , Corazón Auxiliar , Miocarditis , Adulto , VIH , Humanos , Miocarditis/complicaciones , Miocarditis/diagnóstico , Choque Cardiogénico/etiología , Choque Cardiogénico/terapiaRESUMEN
OBJECTIVE: The effect of thyroid dysfunction on adverse outcomes has been studied in many different patient populations. The objective of this study was to investigate the effect of thyroid hormone supplementation of donors and recipients on postoperative outcomes after orthotopic heart transplantation. DESIGN: Retrospective. SETTING: Single center, university hospital. PARTICIPANTS: Two-hundred and sixty-six consecutive patients undergoing heart transplantation. INTERVENTIONS: No interventions. MEASUREMENTS AND MAIN RESULTS: Demographic, hemodynamic, and clinical characteristics; donor and recipient United Network for Organ Sharing scores; and information on thyroid hormone support of donors and recipients were recorded. During the median follow-up of 4.59 years (interquartile range 4.26-4.92 y), 70 patients (26.3%) died. After adjustments were made for the United Network for Organ Sharing score, recipients who were treated preoperatively with l-thyroxine had a lower risk for all-cause mortality (adjusted hazard ratio [HR] 0.24, 95% confidence interval [CI] 0.06-0.98; pâ¯=â¯0.047) compared with recipients who were not treated with l-thyroxine. In addition, l-thyroxine treatment of donors was associated with a better recipient survival (HR 0.31, 95% CI 0.11-0.87; pâ¯=â¯0.025). CONCLUSIONS: Pretransplantation thyroid hormone supplementation of donors and recipients was associated with improved long-term survival after heart transplantation.
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Trasplante de Corazón/efectos adversos , Complicaciones Posoperatorias/prevención & control , Cuidados Preoperatorios/métodos , Enfermedades de la Tiroides/prevención & control , Tiroxina/uso terapéutico , Donantes de Tejidos , Receptores de Trasplantes , Adulto , Anciano , Femenino , Estudios de Seguimiento , Humanos , Hungría/epidemiología , Incidencia , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Pronóstico , Sistema de Registros , Estudios Retrospectivos , Tasa de Supervivencia/tendencias , Enfermedades de la Tiroides/epidemiología , Enfermedades de la Tiroides/etiología , Factores de Tiempo , Resultado del TratamientoRESUMEN
The authors give a short introduction of the Hungarian and the international history of adult heart transplantation, and highlight the similarities in the evolution of the two programs. Their aim was to show how the Hungarian post-transplant survival changed in the last five years. They wanted to investigate how all the changes they had made in the program affected the post-transplant results. They investigated 496 heart transplantation data and compared to international data. Orv Hetil. 2018; 159(46): 1869-1875.
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Trasplante de Corazón/tendencias , Donantes de Tejidos , Obtención de Tejidos y Órganos/tendencias , Adulto , Procedimientos Quirúrgicos Cardíacos , Femenino , Humanos , Hungría , Masculino , Evaluación de Procesos y Resultados en Atención de Salud , Tasa de SupervivenciaRESUMEN
Low output syndrome significantly increases morbidity and mortality of cardiac surgery and lengthens the durations of intensive care unit and hospital stays. Its treatment by catecholamines can lead to undesirable systemic and cardiac complications. Levosimendan is a calcium sensitiser and adenosine triphosphate (ATP)-sensitive potassium channel (IK,ATP) opener agent. Due to these effects, it improves myocardium performance, does not influence adversely the balance between O2 supply and demand, and possesses cardioprotective and organ protective properties as well. Based on the scientific literature and experts' opinions, a European recommendation was published on the perioperative use of levosimendan in cardiac surgery in 2015. Along this line, and also taking into consideration cardiac surgeon, anaesthesiologist and cardiologist representatives of the seven Hungarian heart centres and the children heart centre, the Hungarian recommendation has been formulated that is based on two pillars: literature evidence and Hungarian expert opinions. The reviewed fields are: coronary and valvular surgery, assist device implantation, heart transplantation both in adult and pediatric cardiologic practice. Orv Hetil. 2018; 159(22): 870-877.
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Procedimientos Quirúrgicos Cardíacos/métodos , Cardiotónicos/uso terapéutico , Hidrazonas/uso terapéutico , Cuidados Preoperatorios/métodos , Piridazinas/uso terapéutico , Enfermedades Cardiovasculares/cirugía , Humanos , Hungría , SimendánRESUMEN
OBJECTIVE: Preoperative liver function in heart failure patients is associated with extensive functional, structural, and hemodynamic abnormalities. The authors hypothesized that perioperative liver dysfunction is associated with worse 2-year survival after orthotopic heart transplantation. DESIGN: Retrospective study. SETTING: Single-center, university hospital. PARTICIPANTS: The study comprised 209 consecutive patients undergoing heart transplantation. INTERVENTIONS: No interventions. MEASUREMENTS AND MAIN RESULTS: Hepatobiliary markers, hemodynamic parameters, echocardiographic parameters, the need for mechanical cardiac support, demographic parameters, and United Network for Organ Sharing and Model for End-Stage Liver Disease (MELD) scores were investigated. Fifty-five patients (26.3%) died, and the mean survival time was 3.61 years after transplantation. In multivariate Cox regression analysis, in addition to the preoperative modified MELD score, the 4th quartiles of the maximum aspartate transaminase (AST) and alanine transaminase levels on the 4th through 7th postoperative days were independently associated with mortality (odds ratio [OR] 2.46, 95% confidence interval [CI] 1.09-5.55; p = 0.031 and OR 2.41, 95% CI 1.13-5.18; p = 0.024, respectively). By expressing the transaminase values as the multiplier of the sex-specific top normal value, the maximum AST and alanine transaminase levels (OR 1.02, 95% CI 1.01-1.02; p < 0.001 and OR 1.02, 95% CI 1.01-1.03; p = 0.001, respectively) were linked to worse survival. Among the postdischarge parameters, the modified MELD score (OR 1.17, 95% CI 1.09-1.27; p < 0.001) and the AST level were associated with postdischarge mortality (OR 1.002, 95% CI 1.001-1.003; p < 0.001 as a continuous variable; OR 1.07, 95% CI 1.05-1.10; p < 0.001, expressed as the multiplier of the sex-specific normal value, respectively). CONCLUSIONS: The severity of postoperative liver dysfunction negatively influences survival after heart transplantation, and liver function should be closely assessed in these patients.
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Aspartato Aminotransferasas/sangre , Trasplante de Corazón/mortalidad , Trasplante de Corazón/tendencias , Complicaciones Posoperatorias/sangre , Complicaciones Posoperatorias/mortalidad , Adulto , Biomarcadores/sangre , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/diagnóstico , Periodo Posoperatorio , Estudios Retrospectivos , Tasa de Supervivencia/tendenciasRESUMEN
Assessment of right ventricular (RV) function using conventional echocardiography might be inadequate as the radial motion of the RV free wall is often neglected. Our aim was to quantify the longitudinal and the radial components of RV function using three-dimensional (3D) echocardiography in heart transplant (HTX) recipients. Fifty-one HTX patients in stable cardiovascular condition without history of relevant rejection episode or chronic allograft vasculopathy and 30 healthy volunteers were enrolled. RV end-diastolic (EDV) volume and total ejection fraction (TEF) were measured by 3D echocardiography. Furthermore, we quantified longitudinal (LEF) and radial ejection fraction (REF) by decomposing the motion of the RV using the ReVISION method. RV EDV did not differ between groups (HTX vs control; 96 ± 27 vs 97 ± 2 mL). In HTX patients, TEF was lower, however, tricuspid annular plane systolic excursion (TAPSE) decreased to a greater extent (TEF: 47 ± 7 vs 54 ± 4% [-13%], TAPSE: 11 ± 5 vs 21 ± 4 mm [-48%], P < .0001). In HTX patients, REF/TEF ratio was significantly higher compared to LEF/TEF (REF/TEF vs LEF/TEF: 0.58 ± 0.10 vs 0.27 ± 0.08, P < .0001), while in controls the REF/TEF and LEF/TEF ratio was similar (0.45 ± 0.07 vs 0.47 ± 0.07). Current results confirm the superiority of radial motion in determining RV function in HTX patients. Parameters incorporating the radial motion are recommended to assess RV function in HTX recipients.
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Ecocardiografía Tridimensional/métodos , Trasplante de Corazón/métodos , Ventrículos Cardíacos/diagnóstico por imagen , Ventrículos Cardíacos/fisiopatología , Función Ventricular Derecha , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios RetrospectivosRESUMEN
OBJECTIVE: Cardiac allograft vasculopathy (CAV) is among the top causes of death 1 year after heart transplantation (HTx). Coronary CT angiography (CTA) is a potential alternative to invasive imaging in the diagnosis of CAV. However, the higher heart rate (HR) of HTx recipients prompts the use of retrospective ECG-gating, which is associated with higher radiation dose, a major concern in this patient population. Therefore, we sought to evaluate the feasibility and image quality of low-radiation-dose prospectively ECG-triggered coronary CTA in HTx recipients. MATERIALS AND METHODS: In total, 1270 coronary segments were evaluated in 50 HTx recipients and 50 matched control subjects who did not undergo HTx. The control subjects were selected from our clinical database and were matched for age, sex, body mass index, HR, and coronary dominance. Scans were performed using 256-MDCT with prospective ECG-triggering. The degree of motion artifacts was evaluated on a per-segment basis on a 4-point Likert-type scale. RESULTS: The median HR was 74.0 beats/min (interquartile range [IQR], 67.8-79.3 beats/min) in the HTx group and 73.0 beats/min (IQR, 68.5-80.0 beats/min) in the matched control group (p = 0.58). In the HTx group, more segments had diagnostic image quality compared with the control group (624/662 [94.3%] vs 504/608 [82.9%]; p < 0.001). The mean effective radiation dose was low in both groups (3.7 mSv [IQR, 2.4-4.3 mSv] in the HTx group vs 4.3 mSv [IQR, 2.6-4.3 mSv] in the control group; p = 0.24). CONCLUSION: Prospectively ECG-triggered coronary CTA examinations of HTx recipients yielded diagnostic image quality with low radiation dose. Coronary CTA is a promising noninvasive alternative to routine catheterization during follow-up of HTx recipients to diagnose CAV.