Outcome of surgical repair for aortic coarctation with coexisting descending aortic aneurysm in adult patients / 中华心血管病杂志

Objective: To evaluate the efficacy of surgical treatment of aortic coarctation combined with descending aortic aneurysm in adult patients. Methods: This is a retrospective cohort study. Adult patients with aortic coarctation who were hospitalized in Beijing Anzhen Hospital from January 2015 to April 2019 were enrolled. The aortic coarctation was diagnosed by aortic CT angiography, and the included patients were divided into the combined descending aortic aneurysm group and the uncomplicated descending aortic aneurysm group based on descending aortic diameter. General clinical data and surgery-related data were collected from the included patients, and death and complications were recorded at 30 days after surgery, and upper limb systolic blood pressure was measured in all patients at discharge. Patients were followed up after discharge by outpatient visit or telephone call for their survival and the occurrence of repeat interventions and adverse events, which included death, cerebrovascular events, transient ischemic attack, myocardial infarction, hypertension, postoperative restenosis, and other cardiovascular-related interventions. Results: A total of 107 patients with aortic coarctation aged (34.1±15.2) years were included, and 68 (63.6%) were males. There were 16 cases in the combined descending aortic aneurysm group and 91 cases in the uncomplicated descending aortic aneurysm group. In the combined descending aortic aneurysm group, 6 cases (6/16) underwent artificial vessel bypass, 4 cases (4/16) underwent thoracic aortic artificial vessel replacement, 4 cases (4/16) underwent aortic arch replacement+elephant trunk procedure, and 2 cases (2/16) underwent thoracic endovascular aneurysm repair. There was no statistically significant difference between the two groups in the choice of surgical approach (all P>0.05). In the combined descending aortic aneurysm group at 30 days after surgery, one case underwent re-thoracotomy surgery, one case developed incomplete paraplegia of the lower extremity, and one case died; and the differences in the incidence of endpoint events at 30 days after surgery were similar between the two groups (P>0.05). Systolic blood pressure in the upper extremity at discharge was significantly lower in both groups compared with the preoperative period (in the combined descending aortic aneurysm group: (127.3±16.3) mmHg vs. (140.9±16.3) mmHg, P=0.030, 1 mmHg=0.133 kPa; in the uncomplicated descending aortic aneurysm group: (120.7±13.2) mmHg vs. (151.8±26.3) mmHg, P=0.001). The follow-up time was 3.5 (3.1, 4.4) years. There were no new deaths in the combined descending aortic aneurysm group, no transient ischemic attack, myocardial infarction or re-thoracotomy surgery, and one patient (1/15) suffered cerebral infarction and 10 patients (10/15) were diagnosed with hypertension. The differences in the occurrence of endpoint events during postoperative follow-up were similar between the two groups (P>0.05). Conclusion: In experienced centers, long-term prognosis of patients with aortic coarctation combined with descending aortic aneurysm is satisfactory post surgical intervention.

Machine learning model predicts the occurrence of acute kidney injury after open surgery for abdominal aortic aneurysm repair / 中南大学学报(医学版)

OBJECTIVES@#Abdominal aortic aneurysm is a pathological condition in which the abdominal aorta is dilated beyond 3.0 cm. The surgical options include open surgical repair (OSR) and endovascular aneurysm repair (EVAR). Prediction of acute kidney injury (AKI) after OSR is helpful for decision-making during the postoperative phase. To find a more efficient method for making a prediction, this study aims to perform tests on the efficacy of different machine learning models.@*METHODS@#Perioperative data of 80 OSR patients were retrospectively collected from January 2009 to December 2021 at Xiangya Hospital, Central South University. The vascular surgeon performed the surgical operation. Four commonly used machine learning classification models (logistic regression, linear kernel support vector machine, Gaussian kernel support vector machine, and random forest) were chosen to predict AKI. The efficacy of the models was validated by five-fold cross-validation.@*RESULTS@#AKI was identified in 33 patients. Five-fold cross-validation showed that among the 4 classification models, random forest was the most precise model for predicting AKI, with an area under the curve of 0.90±0.12.@*CONCLUSIONS@#Machine learning models can precisely predict AKI during early stages after surgery, which allows vascular surgeons to address complications earlier and may help improve the clinical outcomes of OSR.

The relationship between the characteristics of tears and the progression of Stanford type B aortic dissection after endovascular treatment / 中华外科杂志

Endovascular treatment of Stanford type B aortic dissection (type B dissection) has been widely used. There will be complications such as aortic dilatation, which will lead to poor prognosis of some patients. With more in-depth researches, it was found that there was a possible correlation between the prognosis of type B dissection and tears, such as the increasing of aortic diameter would be faster with longer tears, and the location of the tear will affect the thrombosis of the false lumen. Studies on hemodynamics have also found that different characteristics of tears of aortic dissection can cause changes in the pressure, blood flow rate and blood capacity in the true and false lumens recently. The hemodynamic changes can be used to predict the prognosis of type B dissection. The main characteristics of tears included the size, position, number of tears, residual tears and stent graft induced new entry. Describing the effect of tear characteristics on the development of type B dissection, can provide the basis for the clinical treatment and further research of type B dissection.

Effect of out-hospital blood pressure management on prognosis of patients with acute aortic syndrome complicated with hypertension after TEVAR / 中华心血管病杂志

Objective: To investigate the influence of blood pressure control after discharge on prognosis of patients with acute aortic syndrome (AAS) complicated with hypertension who underwent thoracic endovascular aortic repair (TEVAR). Methods: This is a retrospective case analysis. Patients diagnosed with AAS complicated with hypertension and undergoing TEVAR in Northern Theater Command General Hospital from June 2002 to December 2021 were consecutively enrolled. Average systolic blood pressure (SBP) and the occurrence of endpoint events were recorded at one month, one year and every 2 years after TEVAR. According to the patients' average SBP, patients with average SBP<140 mmHg (1 mmHg=0.133 kPa) or<150 mmHg were divided into the target blood pressure achievement group, and the others were divided into target blood pressure non-achievement group. Endpoint events included all-cause death, aortic death, stroke, renal insufficiency, aortic related adverse events and a composite of these events (overall clinical adverse events), and re-accepting TEVAR. The incidence of endpoint events was compared between the two groups at each follow-up period. Results: A total of 987 patients were included, aged (55.7±11.7) years, including 779 male (78.9%). When the cutoff value was 140 mmHg, the rate of average target SBP achievement was 71.2% (703/987) at one month, 66.7% (618/927) during 1st to 12th month and 65.1% (542/832) from the first year to the third year after TEVAR. The proportion of patients taking≥2 antihypertensive agents was higher in the group of target blood pressure non-achievement group than the target blood pressure achievement group after TEVAR at 1 month (74.3% (211/284) vs.65.9% (463/703), P=0.010) and during 1st to 12th month (71.5% (221/309) vs. 63.6% (393/618), P=0.016). There were no statistical differences in the all-cause deaths, stroke, aortic related adverse events, and repeat TEVAR between the two groups (All P>0.05) during above follow-up periods. When the cutoff value was 150 mmHg, the rate of target SBP achievement was 89.3% (881/987) at one month, 85.2% (790/927) during 1st to 12th month and 85.6%(712/832) from the first year to the third year after TEVAR. The incidence of clinical total adverse events (8.8% (12/137) vs. 4.2% (33/790), P=0.021) and repeat TEVAR (4.4% (6/137) vs. 1.0% (8/790), P=0.003) in target blood pressure non-achievement group were significantly higher than the target blood pressure achievement group during 1st to 12th month after TEVAR. The incidence of all-cause deaths (5.8% (7/120) vs. 2.4% (17/712), P=0.037) in the target blood pressure non-achievement group was significantly higher than the target blood pressure achievement group from the first year to the third year follow-up period, but there were no statistical differences in the incidence of clinical total adverse events between the two group (P>0.05). Conclusion: Among TEVAR treated AAS patients complicated with hypertension, the average SBP more than 150 mmHg post discharge is associated with increased risk of adverse events. Ideal blood pressure control should be encouraged to improve the outcome of these patients.

Clinical characteristics and prognostic analysis of female patients with Stanford type B aortic dissection / 中华心血管病杂志

Objective: To explore the clinical characteristics and prognostic factors of female patients with Stanford type B aortic dissection. Methods: This is a single-centre retrospective study. Consecutive patients diagnosed with Stanford type B aortic dissection in General Hospital of Northern Theater Command from June 2002 to August 2021 were enrolled, and grouped based on sex. According to the general clinical conditions and complications of aortic dissection tear, patients were treated with thoracic endovascular aortic repair, surgery, or optimal medication. The clinical characteristics and aortic imaging data of the patients at different stages were collected, adverse events including all-cause deaths, stroke, and occurrence of aortic-related adverse events were obtained during hospitalization and within 30 days and at 1 and 5 years after discharge. According to the time of death, death was classified as in-hospital death, out-of-hospital death, and in-hospital death was divided into preoperative death, intraoperative death and postoperative death. According to the cause of death, death was classified as aortic death, cardiac death and other causes of death. Aortic-related adverse events within 30 days after discharge included new paraplegia, post-luminal repair syndrome, and aortic death; long-term (≥1 year after discharge) aortic-related adverse events included aortic death, recurrent aortic dissection, endoleak and distal ulcer events. The clinical characteristics, short-term and long-term prognosis was compared between the groups. Logistic regression analysis was used to explore the association between different clinical factors and all-cause mortality within 30 days in female and male groups separately. Results: A total of 1 094 patients with Stanford type B aortic dissection were enrolled, mean age was (53.9±12.1) years, and 861 (78.7%) were male and 233 (21.3%) were female. (1) Clinical characteristics: compared with male patients, female patients were featured with older average age, higher proportion of aged≥60 years old, back pain, anemia, optimal medication treatment, and higher cholesterol level; while lower proportion of smoking and drinking history, body mass index, calcium antagonists use, creatine kinase level, and white blood cell count (all P<0.05). However, there was no significant difference in dissection tear and clinical stage, history of coronary heart disease, diabetes, hypertension, and cerebrovascular disease between female and male patients (all P>0.05). (2) Follow-up result: compared with male patients, female patients had a higher rate of 30-day death [6.9% (16/233) vs. 3.8% (33/861), P=0.047], in-hospital death (5.6% (13/233) vs. 2.7% (23/861), P=0.027), preoperative death (3.9% (9/233) vs. 1.5% (12/861), P=0.023) and aorta death (6.0% (14/233) vs. 3.1% (27/861), P=0.041). The 1-year and 5-year follow-up results demonstrated that there were no significant differences in death, cerebrovascular disease, and aorta-related adverse events between the two groups (all P>0.05). (3) Prognostic factors: the results of the univariate logistic regression analysis showed that body mass index>24 kg/m2 (HR=1.087, 95%CI 1.029-1.149, P=0.013), history of anemia (HR=2.987, 95%CI 1.054-8.468, P=0.032), hypertension (HR=1.094, 95%CI 1.047-1.143, P=0.040) and troponin-T>0.05 μg/L (HR=5.818, 95%CI 1.611-21.018, P=0.003)were associated with an increased risk of all-cause mortality within 30 days in female patients. Conclusions: Female patients with Stanford type B aortic dissection have specific clinical characteristics, such as older age at presentation, higher rates of anemia and combined back pain, and higher total cholesterol levels. The risk of death within 1 month is higher in female patients than in male patients, which may be associated with body mass index, hypertension, anemia and troponin-T, but the long-term prognosis for both female and male patients is comparable.

Cirugía convencional del aneurisma tóraco-abdominal / Open surgical treatment of thoracoabdominal aortic aneurysm. Experience in 45 patients

BACKGROUND: Thoracoabdominal aortic aneurysm (TAAA) is an infrequent disease and demands a highly specialized and experienced management. Open repair (OR) is the gold standard but it is associated with significant morbidity and mortality. Paraplegia and renal failure are the most important complications. AIM: To report our results with OR treatment of TAAA. MATERIAL AND METHODS: Descriptive study including all patients with TAAA operated electively and consecutively by OR between 1983 and 2019. Main outcomes are operative mortality, renal and neurological morbidity, and long-term survival. RESULTS: We report 45 operated patients aged 33 to 84 years, 74% males. Aneurysm extension according to Crawford classification was I in 18%, II in 18 %, III in 36% and IV in 29%. Operative mortality was 4%. The frequency of paraplegia or paraparesis at discharge was 9%. No patient was discharged on hemodialysis. Survival at 5 and 10 years were 60% and 40% respectively. CONCLUSIONS: OR of TAAA is a complex procedure. Our results show perioperative mortality rates comparable to highly experienced centers. Although being a major procedure, OR remains an alternative to treat this serious condition.

Reparación endovascular de la aorta torácica, resultados a largo plazo / Endovascular repair of the thoracic aorta, long-term results

Resumen Introducción: Las diversas patologías de la aorta torácica descendente, representan una implícita amenaza para la vida, y son potencialmente tratables mediante reparación endovascular. Objetivo: Evaluar los resultados de la reparación endovascular de la aorta torácia descendente (TEVAR). Material y Método: Estudio observacional, retrospectivo y descriptivo, donde se analiza TEVAR, en un período de 10 años (2009 al 2019), en el Hospital Dr. Eduardo Pereira de Valparaíso, Chile. Resultados: Se realizó TEVAR en 31 pacientes, sexo masculino 74,2%, femenino 25,8%, edad promedio 67,8 años (rango 53-85), patologías asociadas: hipertensión arterial sistémica (77,4%), tabaquismo (67,7%) y dislipidemia (38,7%), las indicaciones para TEVAR fueron: el aneurisma de la aorta descendente (51,61%), la disección tipo B crónica complicada (29,03%), y la disección tipo B aguda complicada (19,35%), relacionado al procedimiento se evidenció: morbilidad cardiovascular (12,9%) y morbilidad neurológica (6,45%), complicaciones relacionadas a la endoprótesis (29,03%), incidencia de endofugas (19,35%), estancia hospitalaria promedio de 5,2 días (rango 3 a 17), seguimiento promedio de 47,3 meses (9-108), éxito técnico primario (100%), tasa de reintervención: 3,22%, tasa de supervivencia a 1, 3, 5 años del 96,77%, 93,54 y 90,32% respectivamente, no hubo mortalidad menor a 30 días. Discusión: La evidencia demuestra que TEVAR puede realizarse en forma segura y efectiva, cumpliendo estrictos criterios clínicos y condiciones anatómicas, representando la modalidad de elección para la reparación de las lesiones de la aorta descendente. Conclusión: Los resultados demuestran que TEVAR, representa una excelente estrategia terapeutica, menos invasiva, con baja morbilidad y mortalidad asociada.

Introduction: The pathological injuries of the descending thoracic aorta, represent an implicit threat to life, and are potentially treatable by endovascular repair. Aim: To evaluate the results of endovascular repair of the descending thoracic aorta (TEVAR) in the medium and long term. Material and Method: Observational, retrospective and descriptive study, where TEVAR is analyzed, over a period of 10 years (2009 to 2019), at the Dr. Eduardo Pereira Hospital in Valparaíso, Chile. Results: TEVAR was performed in 31 patients, male sex 74.2%, average age 67.8 years (range 53-85), symptomatic 64.5%, associated pathologies: systemic arterial hypertension (77.4%), smoking (67.7%) and dyslipidemia (38.7%), indications for endovascular repair were descending aortic aneurysm (51.61%), complicated Stanford type B chronic aortic dissection (29.03%), and complicated Stanford type B acute aortic dissection (19.35%), neurological morbidity (6.45%), cardiovascular morbidity (12.9%), complications related to the stent (29.03%), where endoleaks predominate (19.35%), average hospital stay of 5.2 days (range 3 to 17), average followup of 47.3 months (9-108), primary technical success (100%), survival rate at 1, 3, 5 years of 96.77%, 93.54 and 90.32% respectively, there was no mortality less than 30 days or reoperation. Discussion: the evidence shows that TEVAR can be performed safely and effectively, meeting strict clinical criteria and anatomical conditions, which represents the modality of choice for the repair of lesions in the descending aorta. Conclusion: The results show that TEVAR represents an excellent therapeutic strategy, less invasive, with low associated morbidity and mortality.

Síndrome postimplantación en la reparación aórtica endovascular / Post implantation syndrome in endovascular aortic repair

Resumen Introducción: El síndrome postimplantación es un trastorno frecuente, producido en el posoperatorio inmediato posterior al tratamiento endovascular de la enfermedad aórtica, caracterizado por la presencia de anorexia, dolor lumbar, leucocitosis, fiebre y elevación de la proteína C reactiva, asociado ocasionalmente a disminución del recuento de plaquetas o alteración de la coagulación. Objetivos: Determinar la incidencia y morbilidad asociada al síndrome postimplantación, posterior a la reparación endovascular de la patología aórtica. Material y Métodos: Estudio observacional y descriptivo, donde se analiza la presencia del síndrome post implantación en pacientes sometidos a Reparación endovascular torácica aórtica (TEVAR) y Reparación endovascular de aneurisma (EVAR), durante un período de 10 años (2009 al 2019), en el Hospital Dr. Eduardo Pereira de Valparaíso, Chile. Resultados: Se incluyeron 112 reparaciones endovasculares, 72,32% correspondientes a EVAR y 27,68% a TEVAR, incidencia del síndrome post implantación (17,85%), factores de riesgo asociados: edad ≤ 75 años, uso de endoprótesis compuesta por poliester, recubrimiento aórtico ≥ 20cm y tiempo quirúrgico >180 min; (p < 0,05), evidenciando en este grupo de pacientes mayor readmisión, estancia hospitalaria y morbilidad cardiovascular (p < 0,05). Discusión: El síndrome post implantación conduce a una recuperación posoperatoria más exigente, aumentando la morbilidad cardiovascular, readmisión y estancia hospitalaria, con los correspondientes riesgos y costos asociados, en consecuencia podría considerarse una complicación de la reparación aórtica endovascular. Conclusión: La respuesta inflamatoria puede ser intensa posterior a la reparación endovascular de la aorta, el grupo de pacientes que desarrolla este síndrome, amerita una estrecha vigilancia, con énfasis durante el primer mes de post operatorio.

Introduction: Postimplantation syndrome is a common disorder, produced in the immediate postoperative period after endovascular treatment of aortic disease, characterized by anorexia, thoracic or low back pain, leukocytosis, fever and elevation of C-reactive protein, occasionally associated with decreased platelet count or coagulation disorders. Aim: To assess postimplantation syndrome after endovascular aortic repair. Material and Methods: This is an observational, and descriptive study; we analyze the presence of postimplantation syndrome, in 112 successive endovascular repairs of the thoracic and abdominal aorta, over a period of 10 years (2009 to 2019), in the Hospital Dr. Eduardo Pereira in Valparaíso, Chile. Results: 112 endovascular repairs were performed, 81 cases (72.32%) corresponding to EVAR and 31 cases (27.68%) to TEVAR, incidence of post-implantation syndrome was 17.85%. Associated risk factors were age ≤ 75 years, use of polyester stent grafts, aortic covered ≥ 20 cm, surgical time ≥ 180 min, (p < 0.05). As a consequence, in this group of patients, there were associated with greater readmission rates, hospital stay rates and cardiovascular morbidity (p < 0.05). Discussion: The post-implantation syndrome leads to an increase in cardiovascuar morbidy hospital stay rates and a slower postoperative recovery, with the corresponding associated risks and costs, therefore it could be considered a complication of endovascular aortic repair. Conclusion: The inflammatory response after endovascular repair of the aorta, may be intense in some patients, the group of patients who develop this syndrome deserve close monitoring, with emphasis during the first month after surgery.

An elephant trunk stent graft strayed into the false lumen leading to a death during the Sun's operation: A case report / 中南大学学报(医学版)

Type A aortic dissection (AD) is a critical and severe disease with high mortality. The Sun's operation is a standard surgical method for this kind of disease at present. For the procedure, an elephant trunk stent is inserted into the true lumen of the descending aorta and the aortic arch is replaced. A patient was admitted to the First Hospital of Lanzhou University due to sudden chest and back pain for 6 days. Computed tomography angiography (CTA) showed type A AD. Ascending aorta replacement, Sun's operation, and ascending aorta to right femoral artery bypass grafting were performed. After surgery, the patient's condition was worsened. The digital subtraction angiography (DSA) showed the elephant trunk stent was inserted into the false lumen of AD, leading to the occlusion of the large blood vessel at the distal part of the abdominal aorta and below. Although we performed intima puncture and endovascular aortic repair, the patient was still dead.

Clinical Analysis of the Treatment of Iliac Limb Occlusion Following Endovascular Abdominal Aortic Aneurysm Repair / 中国医学科学院学报

Objective To explore the cause and the treatment strategies of iliac limb occlusion after endovascular abdominal aortic aneurysm repair(EVAR). Methods The patients receiving EVAR in PUMC Hospital from January 2015 to December 2020 were retrospectively analyzed.Sixteen(2.7%)cases of iliac limb occlusion were identified,among which 6,9,and 1 cases underwent surgical bypass,endovascular or hybrid procedure,and conservative treatment,respectively. Results Fifteen cases were successfully treated.During the 10.6-month follow-up,2 cases receiving hybrid treatment underwent femoral-femoral bypass due to re-occlusion of the iliac limb. Conclusions Iliac limb occlusion mostly occurs in the acute phase after EVAR,and endovascular or hybrid treatment can be the first choice for iliac limb occlusion.It is suggested to focus on the risk factors for prevention.

Stent-graft relining in a patient with acute aortic aneurysm and a completely migrated endograft

Abstract Stent-graft migration and type I endoleaks are associated with a higher rate of reintervention and increased mortality and morbidity. This article describes a patient presented with an infrarenal aortic stent-graft which had migrated into the aortic sac with loss of all aortic neck attachment. The acutely expanding abdominal aortic aneurysm was treated by placing a second modular endograft within and above the migrated stentgraft. The patient returned 36 months later, with features of an acute myocardial infarction, severe bilateral lower limb ischemia, and renal failure. He was too ill for intervention and demised within 48 hours.

Debranching Solutions in Endografting for Complex Thoracic Aortic Dissections / Soluções de Desramificação em Endoprótese para Dissecções Complexas da Aorta Torácica

Background: Conventional surgical repair of thoracic aortic dissections is a challenge due to mortality and morbidity risks. Objectives: We analyzed our experience in hybrid aortic arch repair for complex dissections of the aortic arch. Methods: Between 2009 and 2013, 18 patients (the mean age of 67 ± 8 years-old) underwent hybrid aortic arch repair. The procedural strategy was determined on the individual patient. Results: Thirteen patients had type I repair using trifurcation and another patient with bifurcation graft. Two patients had type II repair with replacement of the ascending aorta. Two patients received extra-anatomic bypass grafting to left carotid artery allowing covering of zone 1. Stent graft deployment rate was 100%. No patients experienced stroke. One patient with total debranching of the aortic arch following an acute dissection of the proximal arch expired 3 months after TEVAR due to heart failure. There were no early to midterm endoleaks. The median follow-up was 20 ± 8 months with patency rate of 100%. Conclusion: Various debranching solutions for different complex scenarios of the aortic arch serve as less invasive procedures than conventional open surgery enabling safe and effective treatment of this highly selected subgroup of patients with complex aortic pathologies. .

Fundamentos: O reparo cirúrgico convencional de dissecção da aorta torácica é um desafio devido aos riscos de mortalidade e morbidade. Objetivos: Analisamos nossa experiência no reparo híbrido do arco aórtico em dissecções complexas do arco aórtico. Métodos: Entre os anos de 2009 e 2013, 18 pacientes (idade média de 67 ± 8 anos de idade) foram submetidos ao reparo híbrido do arco aórtico. A estratégia de procedimento foi determinada individualmente para cada paciente. Resultados: Treze pacientes fizeram o reparo tipo I utilizando enxerto trifurcado; outro paciente utilizou um enxerto bifurcado. Dois pacientes fizeram o reparo tipo II com substituição da aorta ascendente. Dois pacientes receberam desvios extra-anatômicos de enxertia pela artéria carótida esquerda, permitindo a cobertura da zona 1. A taxa de implantação do stent foi de 100%. Nenhum paciente apresentou acidente vascular cerebral. Um paciente com desramificação total do arco aórtico após dissecção aguda do arco proximal faleceu 3 meses depois de realizar o reparo endovascular da aorta torácica (TEVAR), por insuficiência cardíaca. Não houve endoleak precoce ou a médio prazo. A média de acompanhamento foi de 20 ± 8 meses, com taxa de patência de 100%. Conclusão: Diversas soluções de desramificação, utilizadas em diferentes cenários complexos do arco aórtico, são procedimentos menos invasivos que a cirurgia aberta convencional e permitem o tratamento seguro e eficaz deste subgrupo, altamente selecionado de pacientes com patologias complexas da aorta. .

Hemolytic Anemia Case Caused by an Inverted Inner Felt after Bentall Operation

A 26-yr-old male patient reported worsened dyspnea, dizziness one year after an emergency Bentall operation for type A aortic dissection. There was evidence of hemolytic anemia and aortogram revealed a significant stenosis at the distal anastomosis site. During the reoperation, we found the inner felt at the distal anastomosis was inverted causing a significant stenosis. The reoperation successfully resolved this problem. Here, we report a rare case of hemolytic anemia caused by an inverted inner felt after Bentall operation.

Tratamiento endovascular de los endoleaks provenientes de los ramos lumbares de la aorta / Tratamento endovascular dos endoleaks provenientes dos ramos lombares da aorta / Endovascular treatment of endoleaks of lumbar aortic branches

Introducción: Los endoleaks tipo II constituyen la principal causa de reoperación a mediano y largo plazo. Tienen la potencialidad de llevar al crecimiento y ruptura del aneurisma. Exige un seguimiento imaginológico distinto. Por otro lado no existen pautas claras en cuanto al diagnóstico o tratamiento, pudiéndoselo confundir con endoleaks tipo I o III. El abordaje es diferente de acuerdo a la anatomía y al origen del endoleak. El motivo de la presentación es mostrar un abordaje efectivo para pacientes con endoleak tipo II proveniente de ramos lumbares.Material y Método: Se estudioì una población de 210 pacientes con aneurismas de aorta, luego de la colocación de una endoprótesis de última generación. Mediante seguimiento clínico y estudios tomograìficos, fueron incluidos sólo aquellos pacientes que cumplieron con un estricto control de seguimiento. Los datos fueron volcados en una base de datos (Microsoft Excel 97) y luego fueron analizados empleando el paquete estadístico (Medcalc v 11). Resultados: El 13,3% de la población estudiada presentó un endoleak tipo II temprano,mientras que el 6,1% de la población un endoleak tipo II persistente. El 4,2% del total de la población estudiada desarrolló además crecimiento del saco aneurismático. La causa del crecimiento fue en todos los casos un endoleak tipo II persistente. El tratamiento efectivo consistió en la embolización del vaso aferente, eferente y del nido con coils electro-coagulables. Conclusión: Endoleak tipo II presuriza el saco y tiene la potencialidad de producir crecimiento del aneurisma. Tiene en general un comportamiento benigno. La gran mayoría se trombosa espontáneamente. El estudio demostró que tratar sólo aquellos endoleaks persistentes con crecimiento aneurismático es una conducta segura. El tratamiento endovascular con coils del vaso aferente, eferente y el nido por vía transarterial parece ser seguro y efectivo.

Introdução: Os vazamentos do tipo II são a principal causa de operação re no médio e longo prazo. Têm o potencial de levar a um crescimento e ruptura do aneurisma. Requer monitoramento imaginológico diferente. Por outro lado, não há diretrizes claras quanto ao diagnóstico ou tratamento, confundido com o tipo I ou III endoleak. A abordagem é diferente de acordo com a anatomia e a origem do endoleak. Materiais e Métodos: Estudamos uma população de 210 pacientes com aneurismas da aorta após arte colocação de stent. Através clínica e tomográfica estudos foram incluídos apenas os pacientes que preencheram o controle de rastreamento rigoroso. Os dados foram inseridos em um banco de dados (Microsoft Excel 97) e, em seguida, analisados com o pacote estatístico (Medcalc v 11). Resultados: O 13,3% da população do estudo apresentou um vazamento tipo II cedo, enquanto 6,1% da população com vazamento tipo II persistente. O 4,2% da população total do estudo desenvolvido crescimento aneurisma saco. O tratamento eficaz consistiu navio embolização aferentes e eferentes ninho coils com eletro-coagulável. Conclusão: Tipo II endoleak pressuriza o saco e tem o potencial para produzir crescimento do aneurisma. Ele tem um comportamento benigno. A grande maioria são trombose espontaneamente. Somente aqueles devem ser tratados com vazamentos persistentes crescimento de aneurisma. O tratamento endovascular com bobinas de vidro aferentes e eferentes através ninho transarterial parece ser seguro e eficaz.

Introduction: The treatment of type II endoleaks remains controversial because little is known about their long-term natural history and impact on changes in aneurysm morphology.The objective of this presentation is to show a safe and effective approach to treat type II endoleaks associated to aneurysm sac enlargement. Materials and Methods: We studied a population of 210 patients with aortic aneurysms afterstent-graft placement. Through clinical and tomographic studies were included only those patients who met strict follow up control. The data were entered into a database (Microsoft Excel 97) and then analyzed using the statistical package (Medcalc v 11). Results: Early Type II endoleaks were present in 13.3% of the study. Thirteen patient (6.1%)developed a persistent type II endoleak and only 9(4.2%)with aneurysm sac enlargement of >5mm. Effective treatment consisted afferent and efferent coils vessel embolization and the nidus with electro-detachable coils.Conclusion: We observed that type II endoleaks have a relatively benign course, and in the absence of sac expansion, can be followed for a prolonged course of time without the need for intervention. Only those associated with sac enlargement should be treated. Endovascular treatment with coils of afferent and efferent arteries appears to be safe and effective.

Primeiro escore de risco inflamatório das endopróteses de aorta / First inflammatory risk score for aortic endoprostheses

OBJETIVO: Propor um escore de risco inflamatório para tratamento endovascular dos aneurismas da aorta. MÉTODOS: Vinte e cinco pacientes foram seguidos do período pré-operatório até 3º mês de pós-operatório (1 hora, 6 horas, 24 horas, 48 horas, 7 dias, 1 mês, 2 meses e 3 meses). Variáveis inflamatórias avaliadas foram proteína C reativa, velocidade de hemossedimentação, interleucinas (IL-6, IL8), fator de necrose tumoral alfa, L-selectina, molécula de adesão intercelular (ICAM-1), transfusão de hemáceas, volume de cristalóide, volume de contraste, material da prótese, número de próteses, contagem total de leucócitos e linfócitos. O teste de Spearman apontou as variáveis candidatas ao maior risco inflamatório, segundo P < 20 por cento. A regressão logística apontou variáveis selecionáveis para escore final segundo P < 10 por cento. A análise da curva ROC revelou valores de corte para variáveis selecionadas pela regressão logística. RESULTADOS: Variáveis apresentadas pelo teste de Spearman foram: volume de cristalóide (P = 0,04), material da prótese (P = 0,04), volume de contraste (P=0,02), IL-8 préoperatória (P= 0,10), ICAM-1 1 mês (P=0,03) e L-selectina 1 mês (P = 0,06). A regressão logística revelou que os valores do volume de cristalóide e IL-8 pré-operatória são primordiais para constituição do escore de risco inflamatório para tratamento endovascular dos aneurismas da aorta. O escore de risco seria dividido em três categorias (leve, moderado e grave), com base em intervalos numéricos das duas variáveis selecionadas e as categorias seriam correlacionadas com achados clínicos CONCLUSÃ: Volume de cristalóide e IL-8 pré-operatória são variáveis que poderiam contribuir para categorizar risco inflamatório e, desse modo, ter um papel prognóstico no tratamento endovascular dos aneurismas da aorta.

OBJECTIVE: To purpose an inflammatory risk score for aortic aneurysm endovascular treatment. METHODS: Twenty-five patients were followed-up from preoperative period to third month postoperatively (1-hour, 6-hour, 24-hour, 48-hour, 7-day, 1-month, 2- month and 3month). Inflammatory variables were C-reactive protein, hemosedimentation velocity, interleukins (IL-6, IL-8), tumor necrosis factor-Alpha, L-selectin, intercellular adhesion molecule (ICAM-1), red blood cells transfusion, volume of crystalloid, volume of contrast, type of endoprosthesis, number of endoprostheses, total count of leukocytes and lymphocytes. Spearman test defined the variables considered as candidates to higher inflammatory risk based on P < 20 percent. Logistic regression defined the variables considered as selected for final score based on P < 10 percent. ROC curve analysis revealed the cut-off values for variables selected by logistic regression. RESULTS: Variables defined by Spearman test were: volume of crystalloid (P=0.04), type of endoprosthesis (P=0.04), volume of contrast (P=0.02), preoperative IL-8 (P = 0.10), 1 - month ICAM-1 (P=0.03) and 1-month L-selectin (P=0.06). Logistic regression revealed that volume of crystalloid and preoperative IL-8 values are relevant for composition of inflammatory risk score for aortic aneurysm endovascular treatment. Risk score would be divided into three categories (mild, moderate and severe) based on numeric intervals of these two variables and the categories would be correlated to clinical findings. CONCLUSION: Volume of crystalloid and preoperative IL-8 are variables that might contribute to categorize inflammatory risk and thereby might play a prognostic role for aortic aneurysm endovascular treatment.

Aneurisma de aorta com ruptura para esôfago / Aortic aneurysm rupture into the esophagus

Apresentamos o caso de uma paciente portadora de aneurisma de aorta descendente com ruptura para o esôfago que, após aortoplastia com interposição de tubo de dacron e rafia da laceração esofágica, evoluiu com fístula esôfago pleural no terceiro dia pós-operatório. A paciente necessitou de reintervenção e cuidados intensivos, reabilitando-se adequadamente. A propósito deste caso incomum e do aprendizado adquirido no seu manejo, revisamos a literatura a fim de discutir a melhor alternativa de correção desta rara e, freqüentemente, fatal forma de apresentação das doenças da aorta.

We present the case of a patient with a descending aorta aneurysm rupture into the esophagus, which, after aortoplasty with Dacron tube interposition and suture of esophageal laceration, developed a pleural-esophagus fistula on the 3rd postoperative day. She needed re-intervention and intensive care, followed by adequate recovery. Considering this unusual case and the knowledge acquired through its management, we reviewed the literature in order to discuss the best alternative for the correction of this rare and often fatal form of presentation of aortic diseases.

Operação de Bentall e De Bono para correção das doenças da raiz aórtica: análise de resultados a longo prazo / Bentall and De Bono surgery for correction of valve and ascending aortic disease: long-term results

OBJETIVO: Um estudo retrospectivo foi desenhado tendo como fator de inclusão a cirurgia de Bentall e De Bono. MÉTODOS: Dados foram retirados de prontuários médicos e informações de seguimento a longo prazo obtidas por meio de retornos ambulatoriais e contatos diretos com o paciente. Trinta e nove pacientes foram acompanhados no período de janeiro de 1996 a dezembro de 2005. RESULTADOS: A mediana de idade foi 47 anos, sendo 85 por cento dos pacientes do sexo masculino. Onze (25,5 por cento) pacientes apresentavam síndrome de Marfan e um (2,5 por cento) síndrome de Turner. Entre os fatores de risco, listaram-se: hipertensão em 19 (48,5 por cento) pacientes, tabagismo em oito (20,5 por cento), etilismo em seis (15,5 por cento), dislipidemia em oito (20,5 por cento), diabetes melito em dois (5 por cento) e presença de IAM prévio em um (2,5 por cento). Vinte e oito (72 por cento) pacientes estavam em classe II-III NYHA ao momento da operação. Ectasia ânulo-aórtica era diagnóstico em 14 (36 por cento) pacientes e aneurisma da aorta em 16 (41 por cento). O tempo médio de permanência na UTI foi 8,8 dias, com intervalo de 2-23 dias. A taxa de sobrevida em 30 dias (intra-hospitalar) foi de 94,87 por cento (2/39). Em um ano, 37 (94,87 por cento) pacientes estavam vivos, e em 5 e 10 anos, 33 (84,61 por cento). O tempo de acompanhamento médio foi de 46,5 meses, com intervalo de 14-120 meses. CONCLUSÃO: A técnica descrita por Bentall e De Bono obteve excelentes resultados a curto e longo prazo, sendo eficaz e segura no tratamento de doenças da valva aórtica e aorta ascendente em nosso serviço. Nossos resultados são condizentes com dados atuais da literatura.

OBJECTIVE: A retrospective study was perfomed in a series of consecutive patients who underwent a Bentall and De Bono procedure. Methods: Data were removed of medical records and follow-up data were obtained from clinical records and direct contact with patients. A total of 39 patients were studied between January 1996 and December 2005. RESULTS: The median age was 47 years (range 14-70). There were 33 males and six females. Eleven (25.5 percent) patients presented Marfan syndrome and one (2.5 percent) Turner syndrome. Nineteen (48.5 percent) patients had hypertension, eight (20.5 percent) had history of smoking, six (15.5 percent) had history of alcoholism, eight (20.5 percent) had dyslipidemia, two (5.0 percent) had diabetes and one (2.56 percent) had myocardial infarct previously. Twenty-eight (72 percent) patients were in II-III NYHA class in the moment of the surgery. Annulo-aortic ectasy was present in 14 (35.9 percent) patients and aortic aneuryms in 16 (41 percent). The median time in intensive care unit was 8.79 days with range 2-23 days. Four (10.0 percent) patients underwent an emergency opertation and 35 (90 percent) elective. The overall hospital mortality was 5 percent (2/39). The event-free survival is 94.87 percent at 1 year and 84.61 percent at in 5 and 10. The median time of follow-up was 46.5 months (range 14-120 months). CONCLUSION: The Bentall and De Bono technique obtained excellent results in the short-term and long-term, which support the continued use of the compositive graft technique as the preferred method of treatament for patients with aortic root disease. Our findings confirm the current literature data.

Isquemia sintomática en accesos vasculares parahemodiálisis / Symptomatic ischemia of hemodialysis vascular access

El objetivo de este estudio es dar a conocer nuestra experiencia en el manejo de pacientes con isquemia sintomática severa asociada a los accesos vasculares para hemodiálisis (AVHD). Entre Enero de 2000 y Junio del 2005 se construyeron 1926 accesos vasculares para hemodiálisis en 1537 pacientes en el Servicio de Cirugía del Hospital Barros Luco Trudeau, seleccionando aquellos pacientes que fueron manejados por presentar elementos de isquemia sintomática severa. El grupo está constituido por 18 pacientes, 9 (50 por ciento) hombres y 9 (50 por ciento) mujeres, 14 (78 por ciento) diabéticos. La edad promedio fue de 61 años. El diagnóstico se hizo en base a la anamnesis, examen físico y laboratorio no invasivo. En algunos casos se realizó eco doppler y angiografía. La incidencia encontrada es 1,17 por ciento, correspondiendo 61,1 por ciento a diabéticos mayores de 60 años y 16,7 por ciento a no diabéticos menores de 60 años (p< 0,05). Se presentó en 1,1 por ciento de los pacientes con AVHD nativo y 1,93 por ciento con AVHD protésico (ns). Las manifestaciones aparecieron en el post operatorio inmediato en 7 (39 por ciento) pacientes y en forma tardía en 11 (61 por ciento). La etiología fue enfermedad arterial oclusiva en 13 casos (72,2 por ciento), mecanismo de robo arterial en 3 (16,7 por ciento) y estenosis funcional en 2 (11,5 por ciento). El manejo consistió en revascularización en 8 casos (44,5 por ciento) y cierre de la fístula mas instalación de catéter tunelizado en 10 (55,5 por ciento). Al término del seguimiento, 15 (83,3 por ciento) presentaban regresión completa de los síntomas y 3 (16,7 por ciento) presentaban secuelas. La isquemia sintomática es una complicación poco frecuente, que puede presentarse tanto en forma precoz como tardía especialmente en pacientes diabéticos mayores de 60 años o con enfermedad vascular periférica, pudiendo significar la pérdida del acceso o dejar secuelas invalidantes. Son importantes las medidas de prevención.

Background: Symptomatic ischemia occurs in 1 to 8 percent of hemodialysis vascular accesses and may result in its loss. Aim: To report our experience in the management of patients with severe symptomatic ischemia associated to a vascular access for hemodialysis. Material and methods: All patients operated for a severe ischemia associated to a hemodialysis vascular access, between 2000 and 2005, were included in this study. Results: Of a total of 1926 vascular accesses, symptomatic ischemia was diagnosed in 18 patients (9 males) aged between 27 and 84 years. Fourteen (78 percent) were diabetic. Thus, the incidence of severe ischemia was 1.2 percent. It appeared in 1.1 percent of native and 1.9 percent of prosthetic vascular accesses. Clinical manifestations appeared in the early postoperative period in seven patients (39 percent). In the rest, they appeared more than 30 days after the procedure. Surgical treatment consisted in revascularization in eight patients (45 percent) and closure of fistula and installation of a tunneled catheter in 10 (55 percent). At the end of follow up, 15 patients (83 percent) had a complete regression of symptoms and three (17 percent) had sequelae. Conclusions: Symptomatic vascular access ischemia occurs in 1.2 percent of procedures, is much more common among diabetics and can be successfully managed in 80 percent of cases.