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@#Objective To assess mid- and long-term outcomes and share our clinical method of reduction ascending aortoplasty (RAA) in adult patients undergoing aortic valve replacement (AVR). Methods We retrospectively analyzed clinical data of 41 adult patients with aortic valve disease and ascending aortic dilatation before and after operation of RAA+AVR in Fuwai Hospital from January 2010 to July 2017. There were 28 male and 13 female patients aged 28-76 (53.34±12.06) years. Twenty-three patients received AVR+RAA using the sandwich technique (a sandwich technique group), while other 18 patients received AVR+ascending aorta wrap (a wrapping technique group). Ascending aorta diameter (AAD) was measured by echocardiography or CT scan preoperatively and postoperatively. Results There was no perioperative death. The mean preoperative AAD in the sandwich technique group and the wrapping technique group (47.04±3.44 mm vs. 46.67±2.83 mm, P=0.709) was not statistically different. The mean postoperative AAD (35.87±3.81 mm vs. 35.50±5.67 mm, P=0.804), and the mean AAD at the end of follow-up (41.26±6.54 mm vs. 38.28±4.79 mm, P=0.113) were also not statistically different between the two groups. There were statistical differences in AAD before, after operation and at follow-up in each group. All 41 patients were followed up for 23-108 (57.07±28.60) months, with a median follow-up of 51.00 months. Compared with that before discharge, the AAD growth rate at the last follow-up was –1.50-6.78 mm/year, with a median growth rate of 0.70 mm/year, and only 3 patients had an annual growth rate of above 3 mm/year. Conclusion Mid- and long-term outcomes of RAA in adult patients undergoing AVR with both methods are satisfying and encouraging.
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We present a 70-year-old woman who underwent a classic Blalock-Taussig shunt for tetralogy of Fallot (TOF), followed by intra-cardiac repair at the age of 25 years. She developed heart failure due to aortic regurgitation with aortic root dilatation and pulmonary regurgitation 45 years after the surgery. She was successfully treated with concomitant biventricular outflow tract reconstruction (aortic valve, ascending aorta, and pulmonary valve replacement). The treatment strategy for aortic regurgitation with aortic root dilatation after TOF repair is unclear. With a transient increase in the number of elderly patients who have undergone the classic Blalock-Taussig shunt as palliative surgery, the number of complex cases of both right and left ventricular outlet tract involvement will also increase. With patients' advanced age and situation of complex reoperation taken into consideration, aortic valve and ascending aorta replacement may be useful options for cases of aortic regurgitation and aortic root dilatation.
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RESUMEN Introducción: La válvula aórtica bicúspide (VAB) es una cardiopatía congénita que puede asociarse a complicaciones aórticas y/o valvulares. Resulta importante identificar los grupos de riesgo para realizar un estrecho seguimiento e indicar la intervención a tiempo. Este trabajo propone analizar el impacto que tienen las características clínicas y morfológicas valvulares en el desarrollo de la disfunción valvular aórtica moderada/grave (significativa) y en la incidencia de eventos cardiovasculares mayores en adultos con VAB. Material y métodos: Se seleccionaron pacientes consecutivos con diagnóstico de VAB no sindromática (2010-2019) en seguimiento en el ICSI. Se recabó información clínica y ecocardiográfica de manera prospectiva. Se realizó análisis uni y multivariado para identificar las características clínicas y morfológicas predictoras de disfunción valvular significativa y de eventos cardiovasculares mayores (muerte, cirugía, síndrome aórtico). Una p menor a 0,05 fue considerada significativa. Resultados: Se siguieron 300 pacientes (44.3 ± 15.3 años, 71% varones). La mayoría con VAB tipo I y con presencia de rafe (79,6% y 77%, respectivamente). La edad media de diagnóstico fue de 36.3 ±16.2 años. Hubo 84 pacientes (31,2%) que presentaban disfunción valvular aórtica significativa al momento del inicio del estudio. Con un seguimiento de 4.9 ± 1.7 años, 23 pacientes requirieron cirugía cardíaca (7,7%) y 3 fallecieron (1%). Al final del seguimiento 101 pacientes (33,6%) presentaban disfunción valvular aórtica significativa. La presencia de al menos uno de los siguientes factores: prolapso valvular, calcificación valvular aórtica basal > 1 y edad > 50 años, se asoció a menor sobrevida libre de disfunción valvular aórtica significativa y de eventos mayores. Conclusiones: En nuestra cohorte, observamos una alta incidencia de eventos asociados a VAB. Dentro de las variables analizadas, la presencia de al menos un factor de riesgo se asoció a menor sobrevida libre de eventos mayores y disfunción significativa a 4.9 años.
ABSTRACT Background: Bicuspid aortic valve (BAV) is a congenital heart disease that can be associated with aortic and/or valve complications. It is important to identify risk groups for a closer follow up and timely intervention. Objective: The aim of this work is to analyze the impact of clinical and morphological valve characteristics in the development of moderate/severe (significant) aortic valve dysfunction and in the incidence of major cardiovascular events in adults with BAV. Methods: Consecutive patients with diagnosis of non-syndromic BAV (2010-2019) followed up at our institution were incorporated in the study. Clinical and echocardiographic information was prospectively collected. Univariate and multivariate analyses were performed to identify clinical and morphological characteristics that predict significant valve dysfunction and major cardiovascular events (death/surgery/aortic syndrome). A p value <0.05 was considered significant. Results: Three-hundred patients (44.3 ± 15.3 years, 71% men), the majority with type I BAV and presence of raphe (79.6% and 77%, respectively) were included. Mean age at diagnosis was 36.3±16.2 years, and 84 patients (31.2%) presented significant aortic valve dysfunction at the onset of the study. Twenty-three patients required cardiac surgery (7.7%) and 3 died (1%) during a follow-up of 4.9±1.7 years. At the end of the followup period, 101 (33.6%) patients had significant aortic valve dysfunction. The presence of at least 1 of the following factors: valve prolapse, baseline aortic valve calcification >1 and age >50 years were associated with lower significant aortic valve dysfunction and major cardiovascular event-free survival. Conclusions: In our cohort, we observed a high incidence of events associated with BAV. Among the variables analyzed, the presence of at least 1 risk factor was associated with lower event-free survival and significant dysfunction at 4.9 years.
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RESUMEN Introducción: Algunos autores sugieren que la dilatación aórtica forma parte del corazón de atleta. Las guías recientes proponen indexar los diámetros aórticos por superficie corporal (SC). En deportistas esta variable puede aumentar solo a expensas de la masa muscular y la indexación podría subestimar las dimensiones. El objetivo del estudio fue comparar los diámetros aórticos en jugadores de rugby de elite vs controles, evaluando distintas formas de cuantificación. Material y métodos: Se cuantificó mediante ecocardiografía el diámetro aórtico máximo (AoMax) y el diámetro máximo indexado a SC (AoSC). Se calculó en forma adicional el peso ideal esperado para cada individuo y se estableció el diámetro aórtico indexado por SC esperada (AoSCe). Se definió como dilatación un AoMax mayor que 40 mm o un AoSC/AoSCe mayor que 21 mm/m². Resultados: El AoMax fue mayor en deportistas (34,9 ± 2,6 vs 32,4 ± 2,9 mm; p < 0,01). Los atletas tuvieron una SC significativamente mayor y, en este contexto, presentaron menor AoSC (15,6 ± 1,2 vs 16,2 ± 1,6 mm/m2; p = 0,02). Al realizar el cálculo del peso ideal y comparar el AoSCe, no se observaron diferencias (16,6 ± 1,3 vs 16,3 ± 1,3 mm/m2; p = 0,2). El porcentaje de pacientes con AoMax mayor que 40 mm fue similar en controles y deportistas (2,3% y 1,7%; p = NS). Ningún paciente presentó diámetros indexados en rango patológico. Conclusiones: Los deportistas presentan mayores diámetros aórticos en términos absolutos, en contexto de una mayor SC. Debido al desarrollo muscular, la indexación por SC podría subestimar las dimensiones. El cálculo del AoSCe podría ser un parámetro útil. Las dimensiones aórticas en rango patológico deben ser consideradas anormales.
ABSTRACT Background: Some authors suggest that aortic dilatation is part of the athlete's heart. The recent guidelines recommend indexing aortic diameters by body surface area (BSA). This variable can be greater in athletes due to increased muscle mass, and indexing for this parameter might underestimate the measurements. Objective: The aim of this study was to compare aortic dimensions between elite rugby athletes and controls, evaluating different methods of quantification. Methods: Maximum aortic diameter (MAD) and maximum diameter indexed by BSA (MAD-BSA) were quantified by echocardiography. The expected ideal weight was calculated for each individual and MAD was indexed by the expected body surface area (eBSA). Aortic dilatation was defined as MAD >40 mm or MAD-BSA to MAD-eBSA ratio >21 mm/m2. Results: Maximum aortic diameter was greater in athletes (34.9±2.6 mm vs.32.4±2.9 mm; p <0.01). Body surface area was significantly increased in athletes and, in this setting, MAD-BSA was lower (15.6±1.2 mm/m2 vs. 16.2±1.6 mm/m2; p=0.02). After estimating the ideal weight, MAD-eBSA was not significantly different in both populations (16.3±1.3 mm/m2 vs. 16.6±1.3 mm/m2; p=0.2) The percentage of patients with MAD >40 mm was similar in controls and athletes (2.3% vs. 1.7%, respectively; p=NS). None of the patients presented indexed diameters above the normal ranges. Conclusions: Elite rugby players present larger maximum aortic diameters in absolute values in the context of greater BSA. Due to increased muscle mass, indexing by BSA could underestimate the measurements. The MAD-eBSA ratio could be a useful parameter. Aortic diameters above reference values should be considered abnormal.
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BACKGROUND@#Current data is lacking about the progression of ascending aortic dilatation after transcatheter aortic valve replacement (TAVR) in aortic stenosis (AS) patients with bicuspid aortic valve (BAV) and tricuspid aortic valve (TAV). This study aims to assess the ascending aortic dilatation rate (mm/ year) after TAVR in patients with BAV versus TAV using a multidetector computed tomography (MDCT) follow-up and to determine the predictors of ascending aortic dilatation rate.@*METHODS@#Severe AS patients undergoing TAVR from March 2013 to March 2018 at our center with MDCT follow-ups were included. BAV and TAV were identified using baseline MDCT. Baseline and follow-up MDCT images were analyzed, and the diameters of ascending aorta were measured. Study end point is ascending aortic dilatation rate (mm/year). Furthermore, factors predicting ascending aortic dilatation rate were also investigated.@*RESULTS@#Two hundred and eight patients were included, comprised of 86 BAV and 122 TAV patients. Five, 4, 3, 2, and 1-year MDCT follow-ups were achieved in 7, 9, 30, 46, and 116 patients. The ascending aortic diameter was significantly increased after TAVR in both BAV group (43.7±4.4 mm vs. 44.0±4.5 mm; P<0.001) and TAV group (39.1±4.8 mm vs. 39.7±5.1 mm; P<0.001). However, no difference of ascending aortic dilatation rate was found between BAV and TAV group (0.2±0.8 mm/year vs. 0.3±0.8 mm/year, P=0.592). Multivariate linear regression revealed paravalvular leakage (PVL) grade was independently associated with ascending aortic dilatation rate in the whole population and BAV group, but not TAV group. No aortic events occurred during follow-ups.@*CONCLUSION@# Ascending aortic size continues to grow after TAVR in BAV patients, but the dilatation rate is mild and comparable to that of TAV patients. PVL grade is associated with ascending aortic dilatation rate in BAV patients post-TAVR.
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Abstract: The aorta can be affected by a variety of pathologic processes leading to aneurysm, dissection, or ischemic syndromes. The term aneurysm referring to dilatation, the criterion for definition is controversial. An aneurysm is defined as a 50% enlargement of the normal aorta for a particular body surface area, age, and gender. Another proposed definition depends on the affected segment having a diameter more than 1.5 to 2.0 times normal and represents a pathologically dilated segment of the aorta that has the propensity to expand and rupture. The maximum diameter of the thoracic aorta should not exceed 40 mm. The aorta is a geometrically complex and dynamic evaluation structure is not simple. The aortic aneurysms are associated with degenerative changes, congenital anomalies, inflammatory, micotic, traumatic, or post-stenotic process. The majority of ascending aortic aneurysms are detected as incidental. Echocardiography is the most useful tool for diagnostic evaluation, etiology, progression, risk of rupture, need for intervention and response to treatment of thoracic aneurysms. The predicted aortic root diameter or PARD, the diameter ratio, area height ratio, expansion rate and Z-score; improve the detection and limit the error rates so we must apply them routinely in the echocardiographic examination of patients with suspected or diagnosed aortic aneurysm. Echocardiographic evaluation of the aorta should not be limited to simply measuring the diameter.(AU)
Resumen: La aorta puede afectarse por una variedad de procesos patológicos que conducen al desarrollo de aneurismas, disección o de síndromes isquémicos. El término aneurisma hace referencia a una dilatación, el criterio de definición es polémico. Un aneurisma se establece como un incremento del 50% de las dimensiones normales aórticas para una determinada superficie corporal, edad y género. Otra definición propuesta depende de que el segmento afectado tenga un diámetro de 1.5 a 2.0 veces por encima del normal y representa un segmento aórtico con dilatación patológica que tiene la propensión a la expansión y a la ruptura. El diámetro máximo de la aorta torácica no debe superar los 40.0 mm. La aorta es una estructura geométricamente compleja y dinámica cuya evaluación no es simple. Los aneurismas aórticos están asociados con cambios degenerativos, anomalías congénitas, procesos inflamatorios, micóticos, traumáticos o postestenóticos. La mayoría de los aneurismas de la aorta ascendente se detectan de manera incidental. La ecocardiografía es la herramienta más útil para la evaluación diagnóstica, etiológica, de progresión, del riesgo de ruptura, intervención y en la respuesta al tratamiento de los aneurismas torácicos. El diámetro de la raíz aórtica predicho o DRAP, la relación del diámetro, la proporción de altura-área, la tasa de expansión y el score-Z, mejoran la detección y delimitan la tasa de error por lo que su aplicación debe ser rutinaria en la ecocardiografía transtorácica de aquellos pacientes con sospecha o diagnóstico de aneurisma aórtico. La evaluación ecocardiográfica de la aorta no se debe limitar a la simple medición del diámetro.(AU)