A narrative review of inherited arrhythmogenic syndromes in young population: role of genetic diagnosis in exercise recommendations.

Sudden cardiac death is a rare but socially devastating event, especially if occurs in young people. Usually, this unexpected lethal event occurs during or just after exercise. One of the leading causes of sudden cardiac death is inherited arrhythmogenic syndromes, a group of genetic entities characterised by incomplete penetrance and variable expressivity. Exercise can be the trigger for malignant arrhythmias and even syncope in population with a genetic predisposition, being sudden cardiac death as the first symptom. Due to genetic origin, family members must be clinically assessed and genetically analysed after diagnosis or suspected diagnosis of a cardiac channelopathy. Early identification and adoption of personalised preventive measures is crucial to reduce risk of arrhythmias and avoid new lethal episodes. Despite exercise being recommended by the global population due to its beneficial effects on health, particular recommendations for these patients should be adopted considering the sport practised, level of demand, age, gender, arrhythmogenic syndrome diagnosed but also genetic diagnosis. Our review focuses on the role of genetic background in sudden cardiac death during exercise in child and young population.

Diagnostic and Prognostic Value of Right Ventricular Fat Quantification from Computed Tomography in Arrhythmogenic Right Ventricular Cardiomyopathy.

Background: In arrhythmogenic right ventricular cardiomyopathy (ARVC) non-invasive scar evaluation is not included among the diagnostic criteria or the predictors of ventricular arrhythmias (VA) and sudden death (SD). Computed tomography (CT) has excellent spatial resolution and allows a clear distinction between myocardium and fat; thus, it has great potential for the evaluation of myocardial scar in ARVC. Objective: The objective of this study is to evaluate the feasibility, and the diagnostic and prognostic value of semi-automated quantification of right ventricular (RV) fat replacement from CT images. Methods: An observational case-control study was carried out including 23 patients with a definite (19) or borderline (4) ARVC diagnosis and 23 age- and sex-matched controls without structural heart disease. All patients underwent contrast-enhanced cardiac CT. RV images were semi-automatically reconstructed with the ADAS-3D software (ADAS3D Medical, Barcelona, Spain). A fibrofatty scar was defined as values of Hounsfield Units (HU) <-10. Within the scar, a border zone (between -10 HU and -50 HU) and dense scar (<-50 HU) were distinguished. Results: All ARVC patients had an RV scar and all scar-related measurements were significantly higher in ARVC cases than in controls (p < 0.001). The total scar area and dense scar area showed no overlapping values between cases and controls, achieving perfect diagnostic performance (sensitivity and specificity of 100%). Among ARVC patients, 16 (70%) had experienced sustained VA or aborted SD. Among all clinical, ECG and imaging parameters, the dense scar area was the only one with a statistically significant association with VA and SD (p = 0.003). Conclusions: In ARVC, RV myocardial fat quantification from CT is feasible and may have considerable diagnostic and prognostic value.

Penetrance of Dilated Cardiomyopathy in Genotype-Positive Relatives.

BACKGROUND: Disease penetrance in genotype-positive (G+) relatives of families with dilated cardiomyopathy (DCM) and the characteristics associated with DCM onset in these individuals are unknown. OBJECTIVES: This study sought to determine the penetrance of new DCM diagnosis in G+ relatives and to identify factors associated with DCM development. METHODS: The authors evaluated 779 G+ patients (age 35.8 ± 17.3 years; 459 [59%] females; 367 [47%] with variants in TTN) without DCM followed at 25 Spanish centers. RESULTS: After a median follow-up of 37.1 months (Q1-Q3: 16.3-63.8 months), 85 individuals (10.9%) developed DCM (incidence rate of 2.9 per 100 person-years; 95% CI: 2.3-3.5 per 100 person-years). DCM penetrance and age at DCM onset was different according to underlying gene group (log-rank P = 0.015 and P <0.01, respectively). In a multivariable model excluding CMR parameters, independent predictors of DCM development were: older age (HR per 1-year increase: 1.02; 95% CI: 1.0-1.04), an abnormal electrocardiogram (HR: 2.13; 95% CI: 1.38-3.29); presence of variants in motor sarcomeric genes (HR: 1.92; 95% CI: 1.05-3.50); lower left ventricular ejection fraction (HR per 1% increase: 0.86; 95% CI: 0.82-0.90) and larger left ventricular end-diastolic diameter (HR per 1-mm increase: 1.10; 95% CI: 1.06-1.13). Multivariable analysis in individuals with cardiac magnetic resonance and late gadolinium enhancement assessment (n = 360, 45%) identified late gadolinium enhancement as an additional independent predictor of DCM development (HR: 2.52; 95% CI: 1.43-4.45). CONCLUSIONS: Following a first negative screening, approximately 11% of G+ relatives developed DCM during a median follow-up of 3 years. Older age, an abnormal electrocardiogram, lower left ventricular ejection fraction, increased left ventricular end-diastolic diameter, motor sarcomeric genetic variants, and late gadolinium enhancement are associated with a higher risk of developing DCM.

International Society for Heart and Lung Transplantation Guidelines for the Evaluation and Care of Cardiac Transplant Candidates-2024.

The "International Society for Heart and Lung Transplantation Guidelines for the Evaluation and Care of Cardiac Transplant Candidates-2024" updates and replaces the "Listing Criteria for Heart Transplantation: International Society for Heart and Lung Transplantation Guidelines for the Care of Cardiac Transplant Candidates-2006" and the "2016 International Society for Heart Lung Transplantation Listing Criteria for Heart Transplantation: A 10-year Update." The document aims to provide tools to help integrate the numerous variables involved in evaluating patients for transplantation, emphasizing updating the collaborative treatment while waiting for a transplant. There have been significant practice-changing developments in the care of heart transplant recipients since the publication of the International Society for Heart and Lung Transplantation (ISHLT) guidelines in 2006 and the 10-year update in 2016. The changes pertain to 3 aspects of heart transplantation: (1) patient selection criteria, (2) care of selected patient populations, and (3) durable mechanical support. To address these issues, 3 task forces were assembled. Each task force was cochaired by a pediatric heart transplant physician with the specific mandate to highlight issues unique to the pediatric heart transplant population and ensure their adequate representation. This guideline was harmonized with other ISHLT guidelines published through November 2023. The 2024 ISHLT guidelines for the evaluation and care of cardiac transplant candidates provide recommendations based on contemporary scientific evidence and patient management flow diagrams. The American College of Cardiology and American Heart Association modular knowledge chunk format has been implemented, allowing guideline information to be grouped into discrete packages (or modules) of information on a disease-specific topic or management issue. Aiming to improve the quality of care for heart transplant candidates, the recommendations present an evidence-based approach.

Predictores de riesgo en una cohorte española con cardiolaminopatías. Registro REDLAMINA / Risk predictors in a Spanish cohort with cardiac laminopathies. The REDLAMINA registry

Introducción y objetivos Según las guías de muerte súbita, se debe considerar un desfibrilador automático implantable (DAI) para los pacientes con miocardiopatía dilatada debida a variantes en el gen de la lamina (LMNA) con al menos 2 factores: varones, fracción de eyección del ventrículo izquierdo (FEVI) <45%, taquicardia ventricular no sostenida (TVNS) y variantes no missense. Nuestro objetivo es describir las características clínicas de una cohorte española de pacientes con cardiolaminopatías (registro REDLAMINA) y evaluar los criterios de riesgo vigentes. Métodos Se evaluó la relación entre factores de riesgo y eventos cardiovasculares en una cohorte de 140 portadores de variantes en LMNA (54 probandos, 86 familiares, edad ≥ 16 años). Se consideró: a) evento arrítmico mayor (EAM) si hubo descarga apropiada del DAI o muerte súbita, y b) muerte por insuficiencia cardiaca, incluidos los trasplantes. Resultados Se identificaron 11 variantes nuevas y 21 previamente publicadas. La FEVI <45% (p=0,001) y la TVNS (p <0,001) se relacionaron con los EAM, pero no el sexo o el tipo de variante (missense frente a no missense). La FEVI <45% (p <0,001) fue el único factor relacionado con la muerte por insuficiencia cardiaca. Conclusiones En el registro REDLAMINA, los únicos 2 predictores asociados con EAM fueron la TVNS y la FEVI <45%. No se debería considerar grupo de bajo riesgo a las portadoras de variantes missense con TVNS o FEVI <45%. Es importante individualizar la estratificación del riesgo de los portadores de variantes missense en LMNA, porque no todas tienen el mismo pronóstico. (AU)

Introduction and objectives According to sudden cardiac death guidelines, an implantable cardioverter-defibrillator (ICD) should be considered in patients with LMNA-related dilated cardiomyopathy (DCM) and ≥ 2 risk factors: male sex, left ventricular ejection fraction (LVEF) <45%, nonsustained ventricular tachycardia (NSVT), and nonmissense genetic variants. In this study we aimed to describe the clinical characteristics of carriers of LMNA genetic variants among individuals from a Spanish cardiac-laminopathies cohort (REDLAMINA registry) and to assess previously reported risk criteria. Methods The relationship between risk factors and cardiovascular events was evaluated in a cohort of 140 carriers (age ≥ 16 years) of pathogenic LMNA variants (54 probands, 86 relatives). We considered: a) major arrhythmic events (MAE) if there was appropriate ICD discharge or sudden cardiac death; b) heart failure death if there was heart transplant or death due to heart failure. Results We identified 11 novel and 21 previously reported LMNA-related DCM variants. LVEF <45% (P=.001) and NSVT (P <.001) were related to MAE, but not sex or type of genetic variant. The only factor independently related to heart failure death was LVEF <45% (P <.001). Conclusions In the REDLAMINA registry cohort, the only predictors independently associated with MAE were NSVT and LVEF <45%. Therefore, female carriers of missense variants with either NSVT or LVEF <45% should not be considered a low-risk group. It is important to individualize risk stratification in carriers of LMNA missense variants, because not all have the same prognosis. (AU)

Análisis económico del tratamiento ambulatorio intermitente con levosimendán de la insuficiencia cardiaca avanzada en España / Economic analysis of intermittent intravenous outpatient treatment with levosimendan in advanced heart failure in Spain

INTRODUCCIÓN Y OBJETIVOS: La insuficiencia cardiaca (IC) avanzada conlleva altas tasas de hospitalización y mortalidad. El estudio LION-HEART fue un ensayo clínico aleatorizado y controlado con placebo que evaluó la eficacia y la seguridad de la administración intravenosa de dosis intermitentes de levosimendán en pacientes ambulatorios con IC avanzada. El objetivo del presente estudio es realizar un análisis de costes para determinar si la menor tasa de hospitalizaciones por IC observada en pacientes tratados con levosimendán en el estudio LION-HEART puede generar ahorros para el Sistema Nacional de Salud, en comparación con la opción de no tratar a los pacientes con IC avanzada. MÉTODOS: Se realizó un modelo económico que incluyó las tasas de hospitalización por IC del estudio LION-HEART y los costes de hospitalización por IC y de adquisición y administración intravenosa de levosimendán. El horizonte temporal del análisis fue de 12 meses. Se realizaron 2 análisis, uno determinístico y otro probabilístico (simulación de Monte Carlo de segundo orden). RESULTADOS: Según el análisis determinístico, el ahorro total por cada paciente tratado con levosimendán ascendería a -698,48 euros. En el análisis probabilístico, el ahorro por paciente tratado con levosimendán sería de -849,94 (IC95%, 133,12 a -2.255,31) euros. La probabilidad de que se produzcan ahorros con levosimendán en comparación con la opción de no tratar sería del 94,8%. CONCLUSIONES: El tratamiento ambulatorio intermitente con levosimendán puede generar ahorros para el Sistema Nacional de Salud, en comparación con la opción de no tratar a los pacientes con IC avanzada

INTRODUCTION AND OBJECTIVES: Advanced heart failure (HF) leads to high hospitalization and mortality rates. The LION-HEART study was a randomized, placebo-controlled clinical trial that evaluated the safety and efficacy of intravenous administration of intermittent doses of levosimendan in outpatients with advanced HF. The aim of the present study was to perform a cost analysis to determine whether the lower rate of hospitalizations for HF, observed in patients treated with levosimendan in the LION-HEART study, can generate savings for the Spanish national health system compared with the option of not treating patients with advanced HF. METHODS: An economic model was used that included IC hospitalization rates from the LION-HEART study, the costs of hospitalization due to HF and those of the acquisition and intravenous administration of levosimendan. The time horizon of the analysis was 12 months. Two analyses were carried out, one deterministic and the other probabilistic (second-order Monte Carlo simulation). RESULTS: In the deterministic analysis, the total saving for each patient treated with levosimendan would amount to−€698.48. In the probabilistic analysis, the saving per patient treated with levosimendan would be−€849.94 (95%CI, €133.12 to−€2,255.31). The probability of savings with levosimendan compared with the no treatment option would be 94.8%. CONCLUSIONS: Intermittent ambulatory treatment with levosimendan can generate savings for the Spanish national health system compared with the option of not treating patients with advanced HF

Características clínicas y pronóstico de la enfermedad de Danon. Análisis del registro multicéntrico español / Clinical findings and prognosis of danon disease. An analysis of the Spanish multicenter danon registry

Introducción y objetivos: La enfermedad de Danon (ED) es una enfermedad producida por mutaciones en el gen LAMP2. Se la considera una enfermedad multisistémica caracterizada por miocardiopatía hipertrófica con preexcitación e hipertrofia extrema, discapacidad intelectual, miopatía, presentación infantil y peor pronóstico en varones. Hay pocas series que permitan conocer las características clínicas y el pronóstico de la ED. Métodos: Se analizaron los registros clínicos de los pacientes con ED de 10 hospitales españoles. Resultados: Se incluyó a 27 pacientes (edad, 31 +/- 19 años; el 78% mujeres). Los varones mostraron una elevada prevalencia de manifestaciones extracardiacas -miopatía (80%), trastornos del aprendizaje (83%) y alteraciones visuales (60%)- que eran infrecuentes en las mujeres (el 5, el 0 y el 27% respectivamente). Aunque la miocardiopatía hipertrófica era la cardiopatía más habitual (61%), el grosor ventricular máximo fue 15 +/- 7 mm y 12 pacientes (10 mujeres) presentaron miocardiopatía dilatada. Solo 11 pacientes (49%) mostraron preexcitación y en 16 (65%) la enfermedad se inició después de los 20 años. Tras una mediana de seguimiento de 4 años [intervalo intercuartílico, 2-9], 4 varones (67%) y 9 mujeres (43%) fallecieron o se sometieron a trasplante. El daño cardiaco y los eventos adversos ocurrieron más tardíamente en las mujeres (37 +/- 9 frente a 23 +/- 16 años y 36 +/- 20 frente a 20 +/- 11 años). Conclusiones: Las características clínicas de la ED difieren sustancialmente de lo considerado tradicionalmente. La edad de presentación de la ED es más tardía, no se expresa como una enfermedad multisistémica en las mujeres y la preexcitación es poco frecuente

Introduction and objectives: Danon disease (DD) is caused by mutations in the LAMP2 gene. It is considered a multisystemic disease characterized by hypertrophic cardiomyopathy with pre-excitation and extreme hypertrophy, intellectual disability, myopathy, childhood presentation, and worse prognosis in men. There are scarce data on the clinical characteristics and prognosis of DD. Methods: We analyzed the clinical records of patients with DD from 10 Spanish hospitals. Results: Twenty-seven patients were included (mean age, 31 +/- 19 years; 78% women). Male patients showed a high prevalence of extracardiac manifestations: myopathy (80%), learning disorders (83%), and visual alterations (60%), which were uncommon findings in women (5%, 0%, and 27%, respectively). Although hypertrophic cardiomyopathy was the most common form of heart disease (61%), the mean maximum wall thickness was 15 +/- 7 mm and dilated cardiomyopathy was present in 12 patients (10 women). Pre-excitation was found in only 11 patients (49%). Age at presentation was older than 20 years in 16 patients (65%). After a median follow-up of 4 years (interquartile range, 2-9), 4 men (67%) and 9 women (43%) died or required a transplant. Cardiac disease and adverse events occurred later in women (37 +/- 9 vs 23 +/- 16 and 36 +/- 20 vs 20 +/- 11 years, respectively). Conclusions: The clinical characteristics of DD differ substantially from traditional descriptions: age at presentation of DD is older, the disease is not multisystemic in women, and pre-excitation is infrequent

Cinética de la hemoglobina y pronóstico a largo plazo en insuficiencia cardiaca / Hemoglobin kinetics and long-term prognosis in heart failure

Introducción y objetivos: La influencia de la cinética de la hemoglobina en la insuficiencia cardiaca no se ha establecido por completo. Métodos: Se determinó la hemoglobina en la primera visita y a los 6 meses. La anemia se definió según los criterios de la Organización Mundial de la Salud (hemoglobina < 13 g/dl los varones y < 12 g/dl las mujeres). Según los valores de hemoglobina, se estableció una clasificación de los pacientes como sin anemia (ambas determinaciones normales), con anemia transitoria (anemia en la primera visita, pero no a los 6 meses), con anemia de nueva aparición (inicialmente sin anemia, pero con anemia a los 6 meses) o con anemia permanente (anemia en ambas determinaciones). Resultados: Se incluyó en el estudio a 1.173 pacientes consecutivos (el 71,9% varones; media de edad, 66,8 ± 12,2 años). Se consideró sin anemia a 476 pacientes (40,6%), con anemia transitoria a 170 (14,5%), con anemia de nueva aparición a 147 (12,5%) y con anemia persistente a 380 (32,4%). Durante un seguimiento de 3,7 ± 2,8 años después de la visita realizada a los 6 meses, fallecieron 494 pacientes. En los análisis multivariables generales, la anemia (p < 0,001) y el tipo de anemia (p < 0,001) continuaron siendo factores independientes predictivos de mortalidad por cualquier causa. En comparación con los pacientes sin anemia, aquellos con anemia persistente (hazard ratio [HR] = 1,62; intervalo de confianza del 95% [IC95%], 1,30-2,03; p < 0,001) o con anemia de nueva aparición (HR = 1,39; IC95%, 1,04-1,87; p = 0,03) presentaron más mortalidad, e incluso los pacientes con anemia transitoria mostraron una tendencia similar, aunque sin alcanzar significación estadística (HR = 1,31; IC95%, 0,97-1,77; p = 0,075). Conclusiones: La anemia —en especial la persistente y la de nueva aparición y, en menor medida, la anemia transitoria— tiene efectos nocivos en la insuficiencia cardiaca (AU)

Introduction and objectives: The influence of hemoglobin kinetics on outcomes in heart failure has been incompletely established. Methods: Hemoglobin was determined at the first visit and at 6 months. Anemia was defined according to World Health Organization criteria (hemoglobin < 13 g/dL for men and hemoglobin < 12 g/dL for women). Patients were classified relative to their hemoglobin values as nonanemic (both measurements normal), transiently anemic (anemic at the first visit but not at 6 months), newly anemic (nonanemic initially but anemic at 6 months), or permanently anemic (anemic in both measurements). Results: A total of 1173 consecutive patients (71.9% men, mean age 66.8 ± 12.2 years) were included in the study. In all, 476 patients (40.6%) were considered nonanemic, 170 (14.5%) had transient anemia, 147 (12.5%) developed new-onset anemia, and 380 (32.4%) were persistently anemic. During a follow-up of 3.7 ± 2.8 years after the 6-month visit, 494 patients died. On comprehensive multivariable analyses, anemia (P < .001) and the type of anemia (P< .001) remained as independent predictors of all-cause mortality. Compared with patients without anemia, patients with persistent anemia (hazard ratio [HR] = 1.62; 95% confidence interval [95%CI], 1.30-2.03; P < .001) and new-onset anemia (HR = 1.39; 95%CI, 1.04-1.87, P= .03) had higher mortality, and even transient anemia showed a similar trend, although without reaching statistical significance (HR = 1.31; 95%CI, 0.97-1.77, P = .075). Conclusions: Anemia, especially persistent and of new-onset, and to a lesser degree, transient anemia, is deleterious in heart failure (AU)

Dispositivos de asistencia ventricular izquierda en pacientes candidatos a trasplante cardiaco con hipertensión pulmonar irreversible / Left ventricular assist devices in patients eligible for heart transplant with irreversible pulmonary hypertension

No disponible