Desarrollo histórico de la protección miocárdica: el gran salto adelante de la cirugía cardiovascular / Historical development of myocardial protection: the big jump ahead of cardiovascular surgery

La cirugía a "corazón abierto" con circulación extracorpórea se apronta a cumplir 70 años. Desde un comienzo se hizo necesario buscar la forma de tener un campo operatorio quieto y exangüe, sin riesgo de embolia aérea, lo que llevó al desarrollo de la primera "cardioplegía" por Melrose, a fines de los años 1950's. Sin embargo, esta cayó en descrédito rápidamente y fue abandonada en años 1960's. Se necesitó que transcurrieran casi 15 años para el retorno de la cardioplegía, ahora como forma de proteger al corazón de la isquemia. Durante este periodo se volvió a la fibrilación ventricular a la perfusión coronaria, al paro isquémico y a la hipotermia tópica. Sin embargo, algunos investigadores mantuvieron su interés en la cardioplegía, facilitando el retorno clínico de esta con Hearse en 1976, con la solución cardioplégica cristaloide del Hospital St. Thomas, la que se asentó como el principal método de protección miocárdica, hasta la irrupción de Buckberg con su cardioplegía sanguínea en multidosis, la que se convirtió, a comienzo de los años 1990's, en el procedimiento preferido para proteger al corazón durante el periodo de isquemia requerido para operar en él, infundida ahora no solo por vía anterógrada, sino que también por vía retrógrada. Esto, hasta Pedro Del Nido y su vuelta a la dosis única, solo por vía anterógrada.

Open heart surgery with extracorporeal circulation is approaching its 70th anniversary. From the beginning it was necessary to find a way to have a still and bloodless operative field, without the risk of air embolism, which led to the development of the first "cardioplegía" by Melrose, at the end of the 1950's. However, it quickly fell into disrepute and was abandoned in the 1960's. It took almost 15 years for cardioplegía to return, now as a way of protecting the heart from ischemia. During this period, ventricular fibrillation, coronary perfusion, ischemic arrest and topical hypothermia returned. However, some investigators maintained their interest in cardioplegía, facilitating the clinical return of cardioplegía with Hearse in 1976, with the crystalloid cardioplegic solution of St. Thomas's Hospital. This became the main method of myocardial protection until the irruption of Buckberg with his multidose blood cardioplegía, which became, at the beginning of the 90's, the preferred method to protect the heart during the ischemic period required to operate on it, now infused not only by anterograde route but also by retrograde route. This, until Pedro Del Nido and his return to the single dose, only via the antegrade route.

The Practice of Pediatric Cardiac Anesthesiology in the United States.

BACKGROUND: With advances in surgical and catheter-based interventions and technologies in patients with congenital heart disease (CHD), the practice of pediatric cardiac anesthesiology has evolved in parallel with pediatric cardiac surgery and pediatric cardiology as a distinct subspecialty over the past 80 years. To date, there has not been an analysis of the distribution of pediatric cardiac anesthesiologists relative to cardiac and noncardiac procedures in the pediatric population. The primary aim is to report the results of a survey and its subsequent analysis to describe the distribution of pediatric cardiac anesthesiologists relative to pediatric cardiac procedures that include surgical interventions, cardiac catheterization procedures, imaging studies (echocardiography, magnetic resonance, computed tomography, positron emission tomography), and noncardiac procedures. METHODS: A survey developed in Research Electronic Data Capture (REDcap) was sent to the identifiable division chiefs/cardiac directors of 113 pediatric cardiac anesthesia programs in the United States. Data regarding cardiac surgical patients and procedures were collected from the Society of Thoracic Surgeons Congenital Heart Surgery Database (STS-CHD). RESULTS: This analysis reveals that only 38% (117 of 307) of pediatric cardiac anesthesiologists caring for patients with CHD pursued additional training in pediatric cardiac anesthesiology, while 44% (136 of 307) have gained experience during their clinical practice. Other providers have pursued different training pathways such as adult cardiac anesthesiology or pediatric critical care. Based on this survey, pediatric cardiac anesthesiologists devote 35% (interquartile range [IQR], 20%-50%) of clinical time to the care of patients in the cardiac operating room, 25% (20%-35%) of time to the care of patients in the cardiac catheterization laboratory, 10% (5%-10%) to patient care in imaging locations, and 15% covering general pediatric, adult, or cardiac patients undergoing noncardiac procedures. Attempts to actively recruit pediatric cardiac anesthesiologists were reported by 49.2% (29 of 59) of the institutions surveyed. Impending retirement of staff was anticipated in 17% (10 of 59) of the institutions, while loss of staff to relocation was anticipated in 3.4% (2 of 59) of institutions. Thirty-seven percent of institutions reported that they anticipated no immediate changes in current staffing levels. CONCLUSIONS: The majority of currently practicing pediatric cardiac anesthesiologists have not completed a fellowship training in the subspecialty. There is, and will continue to be, a need for subspecialty training to meet increasing demand for services especially with increase survival of this patient population and to replace retiring members of the workforce.

Longitudinal analysis of National Institutes of Health funding for academic thoracic surgeons.

OBJECTIVE: National Institutes of Health (NIH) funding for academic (noncardiac) thoracic surgeons at the top-140 NIH-funded institutes in the United States was assessed. We hypothesized that thoracic surgeons have difficulty in obtaining NIH funding in a difficult funding climate. METHODS: The top-140 NIH-funded institutes' faculty pages were searched for noncardiac thoracic surgeons. Surgeon data, including gender, academic rank, and postfellowship training were recorded. These surgeons were then queried in NIH Research Portfolio Online Reporting Tools Expenditures and Results for their funding history. Analysis of the resulting grants (1980-2019) included grant type, funding amount, project start/end dates, publications, and a citation-based Grant Impact Metric to evaluate productivity. RESULTS: A total of 395 general thoracic surgeons were evaluated with 63 (16%) receiving NIH funding. These 63 surgeons received 136 grants totaling $228 million, resulting in 1772 publications, and generating more than 50,000 citations. Thoracic surgeons have obtained NIH funding at an increasing rate (1980-2019); however, they have a low percentage of R01 renewal (17.3%). NIH-funded thoracic surgeons were more likely to have a higher professorship level. Thoracic surgeons perform similarly to other physician-scientists in converting K-Awards into R01 funding. CONCLUSIONS: Contrary to our hypothesis, thoracic surgeons have received more NIH funding over time. Thoracic surgeons are able to fill the roles of modern surgeon-scientists by obtaining NIH funding during an era of increasing clinical demands. The NIH should continue to support this mission.

Gender representation among leadership at national and regional cardiothoracic surgery organizational annual meetings.

BACKGROUND: Increased attention has been dedicated to gender inequity at scientific meetings. This study evaluated the gender distribution of session leaders at cardiothoracic surgery national and regional meetings. METHODS: This is a descriptive study of the gender of peer-selected session leaders at 4 cardiothoracic surgery organizations' annual meetings from 2015 to 2019. Session leaders included moderators, panelists, and invited discussants. Data from publicly available programs were used to generate a list of session leaders and organization leaders. The primary outcome measure was the proportion of female session leaders at annual meetings. Descriptive analyses were performed, including the Cochran-Armitage trend test for linear trends of proportions. RESULTS: A total of 679 sessions over 20 meetings were examined. Of the 3662 session leaders, 480 (13.1%) were women. The proportion of total female session leaders trended positively over time from 9.6% (56 of 581) in 2015 to 15.9% (169 of 1060) in 2019 (P = .001). Among specialty topic sessions, female session leaders were distributed as follows: adult cardiac, 6.9% (81 of 1172); congenital cardiac, 10.8% (47 of 437); and thoracic, 23.2% (155 of 668). The proportion of female session leaders trended significantly only for thoracic sessions (20.6% [21 of 102] in 2015 to 29.2% [58 of 199] in 2019; P = .02). More than one-half of the sessions (57.4%; 390 of 679) featured all-male session leadership. CONCLUSIONS: Women remain underrepresented in leadership roles at cardiothoracic surgery organizational meetings. This may deter female applicants and has implications for female surgeons' career trajectories; therefore, attention must be given to the potential for unconscious bias in leadership in cardiothoracic surgery.

The Thoracic Surgery Residents Association: Past contributions, current efforts, and future directions.

OBJECTIVE: The Thoracic Surgery Residents Association (TSRA) is a resident-led organization established in 1997 under the guidance of the Thoracic Surgery Directors Association to represent the interests and educational needs of cardiothoracic surgery residents. We aim to describe the past contributions, current efforts, and future directions of the TSRA within a conceptual framework of the TSRA mission. METHODS: Primary review of educational resources was performed to report goals and content of past contributions. TSRA Executive Committee input was used to describe current resources and activities, as well as the future goals of the TSRA. Podcast analytics were performed to report national and global usage. RESULTS: Since 2011, the TSRA has published 3 review textbooks, 5 reference guides, 3 test-preparation textbooks, 1 supplementary publication, and 1 multiple-choice question bank and mobile application, all written and developed by cardiothoracic surgery trainees. In total 108 podcasts have been recorded by mentored trainees, with more than 175,000 unique listens. Most recently, the TSRA has begun facilitating trainee submissions to Young Surgeon's Notes, fostered a trainee mentorship program, developed the monthly TSRA Newsletter, and established a wide-reaching presence on Facebook, Twitter, and Instagram to help disseminate educational resources and opportunities for trainees. CONCLUSIONS: The TSRA continues to be the leading cardiothoracic surgery resident organization in North America, providing educational resources and networking opportunities for all trainees. Future directions include development of an integrated disease-based resource and continued collaboration within and beyond our specialty to enhance the educational opportunities and career development of cardiothoracic trainees.

El programa MENTOR, los jóvenes y el futuro científico de la SEPAR / The MENTOR Program, Young People, and the Scientific Future of SEPAR

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A 10-year ACS-NSQIP Analysis of Trends in Esophagectomy Practices.

BACKGROUND: Esophagectomy practices have evolved over time in response to new technologies and refinements in technique. Using the National Safety and Quality Improvement Program (NSQIP) database, we aimed to describe trends for esophagectomy in terms of approach, surgeon specialty, and associated outcomes. MATERIALS AND METHODS: Adult patients undergoing esophagectomy were identified within the 2007-2017 NSQIP database. The proportion of cases performed using different approaches was trended over time. Outcomes were compared with chi-squared and t-tests. Multivariate logistic regression was used to identify factors associated with outcomes and provide risk-adjusted measures. RESULTS: A total of 10,383 esophagectomies were included; 6347 (61.1%) were performed for cancer. The proportion of esophagectomies performed via the Ivor Lewis approach (ILE) increased between 2007 (37.0%) and 2017 (62.4%). Simultaneously, transhiatal esophagectomies (THEs) decreased from 41.1% to 21.5% (P < 0.001). THE was more frequently performed in patients with higher baseline probability of mortality (2.3% versus 2.0%, P < 0.001) and morbidity (32.2% versus. 28.7%, P < 0.001). The percentage performed with cardiothoracic surgeons increased from 0.8% in 2007 to 50.3% in 2017 (P < 0.001). The risk-adjusted complication rate was 45% for THE, 40% for ILE, and 50% for McKeown (MCK) esophagectomy (P < 0.001). The risk-adjusted rate of surgical site infection was 17.3% for THE, 13.1% for ILE, and 19% for MCK (P = 0.001). Within risk-adjusted analysis, surgical approach was not associated with complications. CONCLUSIONS: ILE has emerged as the predominant approach for esophagectomy nationwide among NSQIP-participating institutions and may be associated with lower complication rates than THE. The use of MCK esophagectomy has remained stable but is associated with increased complications.

Cirugía torácica robótica: ¿Hacia dónde vamos? / Robotic thoracic surgery: what's our direction?

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Cirujanos torácicos robóticos: la tercera revolución / Robotic thoracic surgeons: the third revolution

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