Manejo anestésico en síndrome corazón izquierdo hipoplásico: Reporte de un caso / Anesthetic management in hypoplastic left heart syndrome: A case report

Introducción: El síndrome corazón izquierdo hipoplásico puede presentarse con signos clínicos inmediato al nacimiento, siendo responsable de las muertes neonatales en la primera semana de vida. El reconocimiento clínico y los hallazgos ecocardiográficos son claves para un diagnóstico y tratamiento oportuno. Reporte de caso: describe el manejo anestésico de un neonato con inestabilidad hemodinámica que requirió cirugía de emergencia con banding pulmonar bilateral para mantener el equilibrio entre la relación del flujo sanguíneo pulmonar y sistémico cercano a la unidad, junto a maniobras de ventilación mecánica, medicamentos anestésicos, inotrópicos y adyuvantes con el objetivo de manipular las resistencias vasculares y el flujo sanguíneo logrando estabilidad hemodinámica del paciente que permitió al quinto día ser sometido a una cirugía electiva de Norwood Sano, tolerando procedimiento con extubación a los 15 días de la cirugía. Conclusión: el momento oportuno de la indicación quirúrgica aumenta la sobrevida de los pacientes síndrome corazón izquierdo hipoplásico.

Background: Hypoplastic left heart syndrome may appear with clinical signs immediately at birth, being responsible for neonatal deaths within the first week of life. Clinical recognition and echocardiographic findings are key to timely diagnosis and treatment. Case report: describes the anesthetic procedure of a neonate with hemodynamic instability who required emergency surgery for bilateral pulmonary banding to maintain the balance between pulmonary and near-unit systemic flow ratio, along with mechanical ventilation maneuvers, anesthetic, inotropic and adjuvant drugs to control vascular resistance and blood flow, thus achieving hemodynamic stability of the patient, which allowed him to undergo an elective Norwood Sano procedure on the fifth day, and which was tolerated with extubation 15 days after surgery. Conclusion: The right timing of the surgical indication increases the survival of patients with hypoplastic left heart syndrome.

Definiciones operativas y protocolo anestésico durante la pandemia producida por SARS-CoV-2 en un programa de cirugía cardíaca pediátrica / Operative definitions and anesthetic protocol during the SARS-CoV-2 pandemic in a pediatric cardiac surgery program

The clinical characteristics of the pediatric population infected with the SARS-CoV-2 virus in general are not as severe as in the adult population, so they can be considered asymptomatic carriers. The pediatric patient with congenital heart disease are considered a high risk group of contagion in the SARS-CoV-2 pandemic, so healthcare personnel who interact with patients must have established guidelines to avoid transmission and spread of the disease. Each country is commanded by the central guidelines established by its health system considering operative definitions and protocols, but in certain places these guidelines do not fulfill international standards, as those proposed by the World Health Organization. In this communication we have done a current literature review and adaptation of the recommendations to face the infectious outbreak due to the SARS-CoV-2 virus in pediatric cardiovascular surgery programs, specifically in the ​​anesthesiology area. We also analyze the type of personal protective equipment that should be used in each area of ​​patient management, changes in the environment of work areas, shift times of health personnel, the protection of personnel performing transesophageal echocardiography, modification of the airway management algorithms, proper placement and withdrawal of personal protective equipment, patients transfer between wards or other services, and adequate disinfection of airway equipment used.

Las características clínicas de la población pediátrica contagiada del virus SARS-CoV-2 en general no son tan severas como en la población adulta, por lo que pueden ser considerados portadores asintomáticos. El paciente pediátrico con cardiopatía congénita pertenece a un grupo de alto riesgo de contagio dentro de la pandemia producida por el SARS-CoV-2, por lo que el personal sanitario que interactúe con los pacientes debe tener lineamientos establecidos para evitar la transmisión y propagación de la enfermedad. Cada país se rige por las guías centrales establecidas por su sistema de salud en cuanto a definiciones operativas y protocolos, pero en algunos lugares estas directrices no cumplen las metas internacionales, como las propuestas por la Organización Mundial de la Salud. En este comunicado hemos realizado una revisión de la literatura actual y adaptación de las recomendaciones para enfrentar el brote infeccioso por el virus SARS-CoV-2 en los programas de cirugía cardiovascular pediátrica, específicamente en el área de anestesiología. También analizamos el tipo de equipo de protección personal que debe ser utilizado en cada área del manejo de pacientes, cambios del ambiente de las áreas de trabajo, rotación de personal, la protección del personal que realiza ecocardiografía transesofágica, modificación de los algoritmos de manejo de la vía aérea, colocación y retiro correctos del equipo de protección personal, traslado de los pacientes entre servicios, y adecuada desinfección del equipo utilizado en el manejo de la vía aérea.

Evaluation of a Brazilian's cardiovascular anesthesia fellowship by its former trainees / Avaliação do programa de aprimoramento em anestesia cardiovascular por seus ex-estagiários

Abstract Background: After advancement of cardiovascular surgery, there is also exponential development of anesthetic techniques in this field. Patients with increasing clinical complexity challenge cardiac anesthesiologists to keep constantly updated. An evaluation of Brazilian's cardiovascular anesthesia fellowship at Dante Pazzanese Institute of Cardiology has been made and information has been collected to evaluate the fellowship program in cardiovascular anesthesia. Method: Target participants were made up of former fellowships, contacted via e-mail containing an invitation to voluntarily participate. Explanation of the survey's purpose was provided. This communication was signed by the authors and contained a hyperlink to the survey, which was constructed on and hosted on a web platform. The survey was composed of 10 objectives questions designed to describe training and subsequent career. Results: The adjusted survey response rate was 71%. Two-thirds of respondents agreed that fellowship training provided them an advantage in the job market and 93% of respondents currently work with cardiac anesthesia. At least 87% of participants would recommend the course to other anesthesiologists. Conclusion: Fellowship graduates judge their technical training as excellent and incorporated the knowledge acquired in their daily practice. However, there are improvements to be made. We believe this document may be useful as a reference for other institutions to develop their own cardiovascular anesthesia fellowship programs.

Resumo Justificativa: Com o avanço da cirurgia cardiovascular nos últimos anos, houve também um desenvolvimento exponencial das técnicas anestésicas. Pacientes com complexidade clínica crescente desafiam os anestesiologistas cardíacos a se manterem constantemente atualizados. Uma avaliação do programa de aprimoramento em anestesia cardiovascular brasileira do Instituto Dante Pazzanese de Cardiologia foi feita e informações foram coletadas para avaliar o programa. Método: Os participantes-alvo eram formados por ex-aprimorandos, contatados via e-mail com um convite para participação voluntária. A explicação do objetivo da pesquisa foi fornecida. Essa comunicação foi assinada pelos autores e continha um link para a pesquisa, que foi construída e hospedada em uma plataforma web. A pesquisa foi composta por 10 questões objetivas destinadas a descrever o treinamento e a carreira subsequente. Resultados: A taxa de resposta ajustada para a pesquisa foi de 71%. Dois terços dos entrevistados concordaram que o treinamento do programa lhes proporcionou uma vantagem no mercado de trabalho e 93% dos entrevistados trabalham atualmente com anestesia cardíaca. Pelo menos 87% dos participantes recomendariam o curso a outros anestesiologistas. Conclusão: Os graduados do programa de aprimoramento julgam sua formação técnica como excelente e incorporaram os conhecimentos adquiridos em sua prática diária. No entanto, há melhorias a serem feitas. Acreditamos que este documento possa ser útil como referência para outras instituições desenvolverem seus próprios programas de aprimoramento em anestesia cardiovascular.

Factores de riesgo asociados a síndrome QT largo en anestesia cardiovascular / Risk factors associated with long QT syndrome in cardiovascular anesthesia

Introducción: el síndrome de QT largo es una canalopatía caracterizada por una grave alteración en la repolarización ventricular. Objetivo: determinar los factores de riesgo asociados a intervalo QT prolongado en anestesia cardiovascular. Métodos: estudio descriptivo, de corte transversal desde mayo de 2014 a mayo de 2016, en pacientes programados para cirugía cardíaca bajo circulación extracorpórea. Se evaluó el riesgo atribuible y el intervalo de confianza para un 95 por ciento en variables con p< 0,05. Resultados: se incluyeron 483 pacientes, con una edad media de 62 años, de ellos 57 (12 por ciento) registraron un QTc prolongado. La edad avanzada (RA: 1,8; IC 95 por ciento: 0,86-2,67), insuficiencia renal crónica (RA: 2,7; IC 95 por ciento: 0,82-4,96), diabetes mellitus tipo 2 (RA: 1,7; IC 95 por ciento: 1,01-2,15), cardiopatía isquémica (RA: 3,5; IC 95 por ciento: 1,60-4,02), hipertrofia ventricular izquierda (RA: 2,2; IC 95 por ciento: 2,53-3,15), anticálcicos (RA: 1,5; IC 95 por ciento: 0,92-2,98), anestesia general orotraqueal balanceada (RA: 2,1; IC 95 por ciento: 2,92-2,35), ondansetrón (RA: 1,7; IC 95 por ciento: 0,98-2,74), droperidol (RA: 1,8; IC 95 por ciento: 2,18-3,94), tiempo de circulación extracorpórea (RA: 2,5; IC 95 por ciento: 1,02-3,62), hipopotasemia (RA: 1,4; IC 95 por ciento: 1,03-2,91) y la bradicardia severa (RA: 1,8; IC 95 por ciento: 1,12-3,86) fueron asociados con alto riesgo de prolongación del intervalo QT. Las complicaciones fueron mayores en este grupo, con una mortalidad de 23 por ciento. Conclusiones: la edad avanzada, la insuficiencia renal crónica, diabetes mellitus tipo 2, hipertrofia ventricular y la cardiopatía isquémica facilitan la prolongación del QT inducida por los bloqueadores del calcio. El mayor tiempo de circulación extracorpórea, la anestesia balanceada con isoflurano, el uso de droperidol y ondansetrón, la bradicardia e hipopotasemia posoperatoria son variables asociadas con la extensión del intervalo QT, con un incremento en las complicaciones. Las taquiarritmias ventriculares y la mortalidad fueron mayores en este subgrupo de pacientes(AU)

Introduction: The long QT syndrome is a channelopathy characterized by a serious alteration in ventricular repolarization. Objective: To determine the risk factors associated with prolonged QT interval in cardiovascular anesthesia. Methods: Descriptive, cross-sectional study from May 2014 to May 2016, in patients scheduled for cardiac surgery under extracorporeal circulation. The attributable risk and the confidence interval were evaluated for 95 percent and in variables with p value under 0.05. Results: 483 patients were included, with a mean age of 62 years, of whom 57 (12 percent) had prolonged QTc. Advanced age (RA: 1.8, 95 percent CI: 0.86-2.67), chronic renal failure (RA: 2.7, 95 percent CI: 0.82-4.96), type 2 diabetes mellitus (RA: 1.7, 95 percent CI: 1.01-2.15), ischemic heart disease (RA: 3.5, 95 percent CI: 1.60-4.02), left ventricular hypertrophy (RA: 2.2, 95 percent CI: 2.53-3.15), calcium-lactam antibiotics (RA: 1.5, 95 percent CI: 0.92-2.98), balanced orotracheal general anesthesia (RA: 2.1, 95 percent CI: 2.92-2.35), ondansetron (RA: 1.7, 95 percent CI: 0.98-2.74), droperidol (RA: 1.8, 95 percent CI: 2.18-3.94) ), extracorporeal circulation time (RA: 2.5, 95 percent CI: 1.02-3.62), hypokalemia (RA: 1.4, 95 percent CI: 1.03-2.91) and severe bradycardia (RA: 1.8, 95 percent CI: 1.12-3.86) were associated with a high risk of QT prolongation. The complications were more significant in this group, with a mortality of 23 percent. Conclusions: Advanced age, chronic renal failure, type 2 diabetes mellitus, ventricular hypertrophy, and ischemic heart disease facilitate the prolongation of QT induced by calcium blockers. The longer time of extracorporeal circulation, the balanced anesthesia with isoflurane, the use of droperidol and ondansetron, bradycardia and postoperative hypokalemia are variables associated with the extension of the QT interval, with an increase in complications. Ventricular tachyarrhythmias and mortality were higher in this subgroup of patients(AU)

Morbilidad en anestesia cardíaca en el Hospital Carlos Andrade Marín durante el año 2013 / Morbility in cardiac anesthesia in the Carlos Andrade Marin Hospital during the year 2013

Introducción: la anestesia general en cirugía cardíaca debe cumplir no solo con sus pilares básicos: hipnosis, amnesia, relajación neuromuscular y analgesia sino también mantener adecuada oxigenación y perfusión tisular, aportar protección neurovegetativa, mantener equilibrio hidroelectrolítico ácido base, prevenir y tratar coagulopatías, regulación térmica y preservar la función miocárdica, neurológica, renal y respiratoria con el fin de mantener la homeostasis. Materiales y métodos: en este estudio observacional descriptivo longitudinal, se realiza el seguimiento de 114 pacientes intervenidos bajo anestesia general para cirugía cardíaca electiva hasta seis meses posoperatorios con edad promedio de 55 años, con una morbilidad de 26.32% y mortalidad del 17.54%. Resultados: las patologías intervenidas más frecuentes fueron valvulopatías (52%) con predominio de estenosis aórtica, en segundo lugar las cardiopatías congénitas (24.67%) principalmente CIA, CIV, PCA. Las dos principales comorbilidades asociadas fueron la hipertensión arterial (39%) y diabetes mellitus tipo II (16%). El 84% de pacientes tenían fracción de eyección del 55% y la clase funcional III y IV presentó mayor riesgo de mortalidad OR 3.2 (p<0.05). El 37.73% de pacientes recibieron beta bloqueadores previo al procedimiento con un efecto protector OR 0.8 (p:<0.05). Conclusiones: el tiempo de circulación extracorpórea fue menor de 120 min. En el 23.32%, un tiempo mayor de CEC mostró ser un factor de riesgo OR: 7 (p:<0.05). El 25% de pacientes requirió soporte inotrópico o vasoactivo, de los cuales solamente la epinefrina mostró significancia estadística como factor de riesgo; sin embargo puede ser un sesgo ya que el tamaño de la muestra de pacientes es relativamente pequeño y todos los grupos, exceptuando el nitroprusiato, tuvieron un OR >1. El 85% de pacientes requirió transfusión con un OR 6.82 (p:<0.05) para complicaciones posoperatorias como infección y hemorragia.

Introduction: general anesthesia in cardiovascular surgery is based not only on hypnosis, amnesia, neuromuscular blockade and analgesia; but must provide proper oxygenation, tissue perfusion, neurovegetative protection, acid base regulation, treat and prevent coagulopathy, thermic control, myocardic preserve, neurologic, renal and respiratory functions in order to keep homeostasis. Materials and methods: in this longitudinal descriptive observational trial, 114 patients who underwent cardiac surgery under general anesthesia were followed for 6 months. The median age of these patients was 55 with 26.32% morbidity and 17.54% mortality. Results: the most frequent surgeries were valvulopathies (52%) being the most common aortic stenosis; in second place congenital cardiopathies (24.67%), mainly trial communication, interventricular communication and patent ductus arteriosus. The two main co-morbilities were arterial hypertension (39%) and diabetes mellitus II (16%). 84% of patients had an ejection fraction of 55% and those with NYHA functional class III and IV had more risk of mortality OR 3.2 (p<0.05). 37.73% of patients received beta blockers before surgery with a protective effect OR 0.8 (p:<0.05). Conclusions: the time of extracorporeal circulation (EC) was less than 120 minutes in 23.32%, lengthier time of CEC showed a risk factor OR: 7 (p:<0.05). 25% of patients needed vasoactive and inotropic support. Only epinephrine reached statistical significance as a risk factor, nevertheless it could be because the number of patients that received this therapy was relatively small. All the groups, except nitroprussiade, had an OR>1. 85% of patients required transfusion with an OR 6.82 (p:<0.05) for postoperatory complications such as infection and bleeding.

Hemodynamic changese during the procedure or double cardiac valve replacement / 中华麻醉学杂志

The hemodynamics of 49 scheduled patients during anesthesia and opration for mitral and aortic valve replacement were studied with the insertion of SwanGanz catheter and by the method of thermodilution technics.Pre-anesthesia CI and LVWI were in the nor mal range with abnormal MPAP, PCWP, PTRI and RVWI.Increase of RAP and decrease in MPA,PCWP, MAP, CI, LVWI and RVWI were observed during induction of anesthesia. The hemodynamic parameters returned to or exceded the pre-anesthesia values after trachcal intubation and sternotomy. The CI, MAP, MPAP, PCWP, LVWI and RVWI decreased signifi- cantly after insertion of aorta and vena cava catheter. The reduction of MPAP, P(IWP,PTRI and RVWI post-cardiopulmonary bypass (CPB) were significant and persistent with no change of PVRI.The lower MAP,SVRI and deterioration of cardiac performance post-CPB indicate that the administeration of positive inotropir agents and restoration of hematocrit are nec essary as early as possible.

The Effect of Extracorporeal Circulation on Serum Angiotensin Converting Enzyme ( SACE ) Levels / 대한마취과학회지

It is well known that the pulmonary capillary endothelium is rich in angiotensin converting enzyme(ACE), which is released in the event of smoking, acute lung injury, or some lung diseases such as Gauchers disease and hypertension. Serum ACE levels may be clinically useful because they are reflections of pulmonary circulation. In order to evaluate the effect of extracorporeal circulation and pulmonary perfusion on serum ACE levels, we measured serum ACE level during prebypass, total bypass(5', 30', 60') and pulmonary perfusion (30', 60', 24 hrs.) in 10 open-heart patients. The results were as follows: 1) The SACE level before the begining of extracorporeal circulation was 10.03+/-1.66u/ml and decreased significantly to 2.79+/-0.63u/ml(p<0.005) 5min. after extracorporeal circulation was initiated. 2) The decreased SACE level seen during extracorporeal circulation returned to a nearly normal (9.33+/-1.8u/ml) 24hrs. after pulmonary perfusion. 3) There were no significant correlations between the SACE level and the variation of age during extracorporeal circulation and pulmonary perfusion. The above results suggest that SACE levels are proportional to the amount of pulmonary blood flow.