Correlation of An Ultrasonic Scoring System and Intraoperative Blood Loss in Placenta Accreta Spectrum Disorders: A Retrospective Cohort Study / 生物医学与环境科学（英文）

Objective@#This study aims to investigate the correlation of an ultrasonic scoring system with intraoperative blood loss (IBL) in placenta accreta spectrum (PAS) disorders.@*Methods@#A retrospective cohort study was conducted between January 2015 and November 2019. Clinical data for patients with PAS have been obtained from medical records. Generalized additive models were used to explore the nonlinear relationships between ultrasonic scores and IBL. Logistic regressions were used to determine the differences in the risk of IBL ≥ 1,500 mL among groups with different ultrasonic scores.@*Results@#A total of 332 patients participated in the analysis. Generalized additive models showed a significant positive correlation between score and blood loss. The amount of IBL was increased due to the rise in the ultrasonic score. All cases were divided into three groups according to the scores (low score group: ≤ 6 points, @*Conclusions@#The risk of blood loss equal to or greater than 1,500 mL increases further when ultrasonic score greater than or equal to 10 points, the preparation for transfusion and referral mechanism should be considered.

A comparison of perioperative outcomes between extraperitoneal robotic single-port and multiport radical prostatectomy with the da Vinci Si Surgical System / 亚洲男科学杂志(英文版)

To evaluate outcomes between extraperitoneal robotic single-port radical prostatectomy (epR-spRP) and extraperitoneal robotic multiport radical prostatectomy (epR-mpRP) performed with the da Vinci Si Surgical System, comparison was performed between 30 single-port (SP group) and 26 multiport (MP group) cases. Comparisons included operative time, estimated blood loss (EBL), hospital stay, peritoneal violation, pain scores, scar satisfaction, continence, and erectile function. The median operation time and EBL were not different between the two groups. In the SP group, the median operation time of the first 10 patients was obviously longer than that of the latter 20 patients (P < 0.001). The median postoperative hospital stay in the SP group was shorter than that in the MP group (P < 0.001). The rate of peritoneal damage in the SP group was less than that in the MP group (P = 0.017). The pain score and overall need for pain medications in the SP group were lower than those in the MP group (P < 0.001 and P = 0.015, respectively). Patients in the SP group were more satisfied with their scars than those in the MP group 3 months postoperatively (P = 0.007). At 3 months, the cancer control, recovery of erectile function, and urinary continence rates were similar between the two groups. It is safe and feasible to perform epR-spRP using the da Vinci Si surgical system. Therefore, epR-spRP can be a treatment option for localized prostate cancer. Although epR-spRP still has a learning curve, it has advantages for postoperative pain and self-assessed cosmesis. In the absence of the single-port robotic surgery platform, we can still provide minimally invasive surgery for patients.

Valor pronóstico del sistema de calificación APACHE II en el postoperatorio de cirugía cardíaca / Prognostic value of APACHE II score in postoperative of cardiac surgery

Resumen Antecedentes y objetivos: El sistema de calificación APACHE II permite predecir la mortalidad intrahospitalaria en terapia intensiva. Sin embargo, no está validado para cirugía cardíaca, ya que no posee buena capacidad diferenciadora. El objetivo es determinar el valor pronóstico de APACHE II en el postoperatorio de procedimientos cardíacos. Materiales y métodos: Se analizó en forma retrospectiva la base de cirugía cardíaca. Se incluyó a pacientes intervenidos entre 2017 y 2018, de los cuales se calculó la puntuación APACHE II. Se utilizó curva ROC para determinar el mejor valor de corte. El punto final primario fue mortalidad intrahospitalaria. Como puntos finales secundarios se evaluó la incidencia de bajo gasto cardíaco (BGC), accidente cerebrovascular (ACV), sangrado quirúrgico y necesidad de diálisis. Se realizó un modelo de regresión logístico multivariado para ajustar a las variables de interés. Resultados: Se analizó a 559 pacientes. La media del sistema de calificación APACHE II fue de 9.9 (DE 4). La prevalencia de mortalidad intrahospitalaria global fue de 6.1%. El mejor valor de corte de la calificación para predecir mortalidad fue de 12, con un área bajo la curva ROC de 0.92. Los pacientes con APACHE II ≥ 12 tuvieron significativamente mayor mortalidad, incidencia de BGC, ACV, sangrado quirúrgico y necesidad de diálisis. En un modelo multivariado, el sistema APACHE II se relacionó de modo independiente con mayor tasa de mortalidad intrahospitalaria (OR, 1.14; IC95%, 1.08-1.21; p < 0.0001). Conclusiones: El sistema de clasificación APACHE II demostró ser un predictor independiente de mortalidad intrahospitalaria en pacientes que cursan el postoperatorio de cirugía cardíaca.

Abstract Background and objectives: The APACHE II score allows predicting in-hospital mortality in patients admitted to intensive care units. However, it is not validated for patients undergoing cardiac surgery, since it does not have a good discriminatory capacity in this clinical scenario. The aim of this study is to determine prognostic value of APACHE II score in postoperative of cardiac surgery. Materials and methods: The study was performed using the cardiac surgery database. Patients undergoing surgery between 2017 and 2018, with APACHE II score calculated at the admission, were included. The ROC curve was used to determine a cut-off value The primary endpoint was in-hospital death. Secondary endpoints included low cardiac output (LCO), stroke, surgical bleeding, and dialysis requirement. A multivariable logistic regression model was developed to adjust to various variables of interest. Results: The study evaluated 559 patients undergoing cardiac surgery. The mean of APACHE II Score was 9.9 (SD 4). The prevalence of in-hospital death was 6.1%. The best prognostic cut-off value for the primary endpoint was 12, with a ROC curve of 0.92. Patients with an APACHE II score greater than or equal to 12 had significantly higher mortality, higher incidence of LCO, stroke, surgical bleeding and dialysis requirement. In a multivariate logistic regression model, the APACHE II score was independently associated with higher in-hospital death (OR, 1.14; 95CI%, 1.08-1.21; p < 0.0001). Conclusions: The APACHE II Score proved to be an independent predictor of in-hospital death in patients undergoing postoperative cardiac surgery, with a high capacity for discrimination.

Efficacy of Oxidized Regenerated Cellulose, SurgiGuard®, in Porcine Surgery

PURPOSE: Adequate hemostasis is important for postoperative outcomes of abdominal surgery. This study evaluated the hemostatic effects and accompanying histopathological changes of a novel oxidized regenerated cellulose, SurgiGuard®, during abdominal surgery. MATERIALS AND METHODS: Ten pigs underwent wedge resection of the spleen (1×1 cm) and liver (1.5×1.5 cm). The resected surface was covered with Surgicel® fabric or fibril type (Group A) or SurgiGuard® fabric or fibril type (Group B). Surgicel® and SurgiGuard® were randomized for attachment to the resected surface by fabric type (n=5) or fibril type (n=5). Blood loss was measured 5, 7, and 9 min after resection. Pigs were necropsied 6 weeks postoperatively to evaluate gross and histopathological changes. RESULTS: There was no significant difference in total blood loss between groups [spleen fabric: Group A vs. Group B, 4.38 g (2.74–6.43) vs. 3.41 g (2.46–4.65), p=0.436; spleen fibril: Group A vs. Group B, 3.44 g (2.82–6.07) vs. 3.60 g (2.03–6.09), p=0.971; liver fabric: Group A vs. Group B, 4.51 g (2.67–10.61) vs. 6.93 g (3.09–9.95), p=0.796; liver fibril: Group A vs. Group B, 3.32 g (2.50–8.78) vs. 3.70 g (2.32–5.84), p=0.971]. Histopathological analysis revealed no significant difference in toxicities related to Surgicel® or SurgiGuard® [inflammation, fibrosis, foreign bodies, and hemorrhage (spleen: p=0.333, 0.127, 0.751, and 1.000; liver: p=0.155, 0.751, 1.000, and 1.000, respectively)]. CONCLUSION: SurgiGuard® is as effective and non-toxic as Surgicel® in achieving hemostasis after porcine abdominal surgery.

Use of tranexamic acid in primary total knee replacement: effects on perioperative blood loss / Uso do ácido tranexâmico em artroplastia total primária de joelho: repercussões na perda sanguínea perioperatória

ABSTRACT BACKGROUND AND OBJECTIVES: The use of tranexamic acid in primary total knee replacement surgeries has been the subject of constant study. The strategies to reduce bleeding are aimed at reducing the need for blood transfusion due to the risks involved. In this study we evaluated the use of tranexamic acid in reducing bleeding, need for blood transfusion, and prevalence of postoperative deep vein thrombosis in primary total knee replacement. METHOD: 62 patients undergoing primary total knee replacement were enrolled in the study, from June 2012 to May 2013, and randomized to receive a single dose of 2.5 g of intravenous tranexamic acid (Group TA) or saline (Group GP), 5 min before opening the pneumatic tourniquet, respectively. Hemoglobin, hematocrit, and blood loss were recorded 24 h after surgery. Deep vein thrombosis was investigated during patient's hospitalization and 15 and 30 days after surgery in review visits. RESULTS: There was no demographic difference between groups. Group TA had 13.89% decreased hematocrit (p = 0.925) compared to placebo. Group TA had a decrease of 12.28% (p = 0.898) in hemoglobin compared to Group GP. Group TA had a mean decrease of 187.35 mL in blood loss (25.32%) compared to group GP (p = 0.027). The number of blood transfusions was higher in Group GP (p = 0.078). Thromboembolic events were not seen in this study. CONCLUSION: Tranexamic acid reduced postoperative bleeding without promoting thromboembolic events.

RESUMO JUSTIFICATIVA E OBJETIVOS: O uso do ácido tranexâmico, em cirurgias de artroplastia total primária de joelho, tem sido objeto de constante estudo. As estratégias para redução de sangramento visam à redução da necessidade de transfusão de sangue devido aos riscos que apresentam. Neste estudo, propomos a avaliação do uso do ácido tranexâmico na redução do sangramento, na necessidade de transfusão de sangue e na prevalência de trombose venosa profunda (TVP) pós-operatória em artroplastia total primária de joelho. MÉTODO: Foram estudados 62 pacientes submetidos à artroplastia primária total de joelho, de junho de 2012 a maio de 2013, randomizados para receber ácido tranexâmico 2,5 g endovenoso (grupo AT), em dose única, ou soro fisiológico (grupo GP), cinco minutos antes da abertura do torniquete pneumático, respectivamente. Foram feitas dosagens de hemoglobina e hematócrito e medida a perda sanguínea 24 horas após a cirurgia. A TVP foi pesquisada durante a internação do paciente, 15 e 30 dias após a cirurgia nas consultas de revisão. RESULTADOS: Não houve diferenças demográficas entre os grupos estudados. O grupo GT apresentou queda do hematócrito 13,89% (p = 0,925) comparado com o grupo placebo. O grupo GT apresentou diminuição de 12,28% (p = 0,898) da hemoglobina comparado com o grupo GP. O grupo GT apresentou uma diminuição média de 187,35 ml nas perdas sanguíneas (25,32%) quando comparado com o grupo GP (p = 0,027). O número de transfusões sanguíneas foi maior no grupo GP (p = 0,078). Eventos tromboembólicos não foram evidenciados neste estudo. CONCLUSÕES: O ácido tranexâmico diminuiu o sangramento pós-operatório sem promover eventos tromboembólicos.

Should oncological cases of upper urinary system be excluded at the beginning of the laparoscopic learning curve?

ABSTRACTPurpose:The place of oncological cases of upper urinary system in the laparoscopic learning curve was investigated.Materials and Methods:A total of 139 patients from two different centers underwent laparoscopic operations and were included in this retrospective study.Results:Mean operative times for oncological, and non-oncological cases were 101.3 (range 60-450), and 102.7 (45-490) minutes respectively. Fourty-two (31.3 %) patients were oncological cases. In 4 oncological cases, the surgeons switched to open surgery because of massive bleeding and six (14.2 %) oncological cases required blood transfusions during peri/postoperative periods. Pulmonary embolism was observed in one oncological case. In one non-oncological case, the surgeon switched to open surgery because of intestinal perforation and 10 (9.7 %) non-oncological cases needed blood transfusions during peri/postoperative periods. In addition, some complications such as intestinal perforation (n=1), mechanical ileus (n=1), and pulmonary embolism (n=1) were observed during postoperative period. Intestinal perforation was repaired using laparoscopic (n=1) method. Mechanical ileus was approached with open surgical technique. Mean hospital stay of the patients in the oncological and non-oncological series were 4.5 (3-23) and 4.5 (3-30) days respectively.Conclusion:We think that renal oncological cases should be included in the spectrum of laparoscopic indications even at the beginning of the learning curve. Certainly, we still share the opinion that cancer cases which require highly challenging surgeries like radical cystectomy, and prostatectomy should be postponed till to gaining of higher level of experience.

Comparison beetwen open and laparoscopic radical cistectomy in a latin american reference center: perioperative and oncological results

ABSTRACTObjectives:To evaluate the differences of peri-operatory and oncological outcomes between Laparoscopic Radical Cystectomy and Open Radical Cystectomy in our center.Materials and Methods:Overall, 50 patients were included in this non randomized match-pair analysis: 25 patients who had undergone Laparoscopic Radical Cystectomy for invasive bladder cancer (Group-1) and 25 patients with similar characteristics who had undergone Open Radical Cystectomy (Group-2). The patients were operated from January 2005 to December 2012 in a single Institution.Results:Mean operative time for groups 1 and 2 were 350 and 280 minutes (p=0.03) respectively. Mean blood loss was 330 mL for group 1 and 580 mL for group 2 (p=0.04). Intraoperative transfusion rate was 0% and 36% for groups 1 and 2 respectively (p=0.005). Perioperative complication rate was similar between groups. Mean time to oral intake was 2 days for group 1 and 3 days for group 2 (p=0.08). Median hospital stay was 7 days for group 1 and 13 for group 2 (p=0.04). There were no differences in positive surgical margins and overall survival, between groups.Conclusions:In a reference center with pelvic laparoscopic expertise, Laparoscopic Radical Cystectomy may be considered a safe procedure with similar complication rate of Open Radical Cystectomy. Laparoscopic Radical Cystectomy is more time consuming, with reduced bleeding and transfusion rate. Hospital stay seems to be shorter. Oncologically no difference was observed in our mid-term follow-up.

Troca valvar aórtica minimamente invasiva: uma alternativa à técnica convencional / Minimally invasive aortic valve replacement: an alternative to the conventional technique

OBJETIVO: Demonstrar o uso da cirurgia minimamente invasiva para tratamento da valva aórtica e comparar seus resultados com o método tradicional. MÉTODOS: Entre 2006 e 2011, 60 pacientes foram submetidos à cirurgia na valva aórtica, após consentimento escrito, destes 40 pela técnica minimamente invasiva com acesso por minitoracotomia ântero-lateral direita (Grupo 1/G1)e 20 por esternotomia mediana (Grupo 2/G2). Comparamos os tempos operatórios e a evolução pós-operatória intra-hospitalar. RESULTADOS: Os tempos médios de circulação extracorpórea (CEC) e pinçamento aórtico no G1 foram, respectivamente, 142,7 ± 59,5 min e 88,6 ± 31,5 min e, no G2, 98,1 ± 39,1 min e 67,7 ± 26,2 min (P<0,05), uma diferença nas medianas de 39 minutos no tempo de CEC e 23 minutos no pinçamento aórtico foram observados a favor da técnica convencional. A perda sanguínea pelos drenos torácicos foi significativamente menor no grupo minimamente invasivo: 605,1 ± 679,5 ml (G1) versus 1617 ± 1390 ml (G2) (P<0,05). Os tempos médios de internamento em UTI e hospitalar foram menores em G1: 2,3 ± 1,8 dias e 5,5 ± 5,4 dias versus 5,1 ± 3,6 dias e 10 ± 5,1 dias em G2 (P<0,05), respectivamente. O uso de drogas vasoativas no pós-operatório também foi menor no grupo minimamente invasivo 12,8% em G1 versus 45% em G2. CONCLUSÃO: Troca valvar aórtica com o uso de técnicas minimamente invasivas, apesar de demonstrar maiores tempos intraoperatórios, não afeta os resultados pósoperatórios, que nesta casuística mostraram-se melhores quando comparado ao método tradicional.

OBJECTIVES: To demonstrate the use of minimally invasive surgery for aortic valve replacement and compare your results with the traditional method. METHODS: Between 2006 and 2011 sixty patients underwent surgery on aortic valve, after written consent, these 40 by minimally invasive technique with right anterior minithoracotomy access (Group 1/G1) and 20 by median sternotomy (Group 2/G2). Compare the operating times and postoperative evolution intra-hospital. RESULTS: The average times of bypass and aortic crossclamp in G1 were, respectively, 142.7 ± 59.5 min and 88.6 ± 31.5 min and, in G2, 98.1 ± 39.1 min and 67.7 ± 26.2 min (P < 0.05), a difference in medians of 39 minutes in bypass time and 23 minutes in aortic cross-clamp were observed in favour of conventional technique. The blood loss by the thoracic drains was significantly lower in the Group: minimally invasive 605.1 ± 679.5 ml (G1) versus 1617 ± 1390 ml (G2) (P < 0.05).The average time of ICU and hospital stay were shorter in G1: 2.3 ± 1.8 and 5.5 ± 5.4 days versus 5.1 ± 3.6 and 10 ± 5.1 in G2 (P < 0.05), respectively. Vasoactive drug use was also less post-operative at 12.8% in minimally invasive group G1 versus 45% in G2. CONCLUSION: Aortic valve replacement through minimally invasive techniques, although intraoperative times larger, not demonstrate affect postoperative results that this case proved best when compared to the traditional approach.

Laparoscopic nephrectomy with single-portal access Sitracc® in swines / Nefrectomia laparoscópica com portal único Sitracc® em suínos

PURPOSE: To analyze the viability of using SITRACC® (single-portal access) to make partial or total nephrectomy in pigs and also to describe the technical difficulties found during these surgical procedures. METHODS: Ten pigs (Landrace specie) with 20kg in average were distributed in two groups: Group A - total right nephrectomy - and Group B - partial left nephrectomy -. The anesthetic procedure was initially done with thiopental (10mg/kg) and maintained with halothane. The surgical procedures were performed inside the Surgical Technique Room from Pontifical Catholic University of Parana (PUCPR). RESULTS: It was analyzed the surgery duration, time to insert SITRACC®, the volemic loss and the size of the organ. In the first surgeries, the surgical time and blood volume loss were higher (between 15 to 43 minutes and 120 to 400 mL, respectively). The more the procedure was performed, the more the surgeons were used to the technique, so the bleeding and the time of surgery was significantly reduced to 15 minutes and 50 mL of blood loss, respectively. The difficulties found were associated with the nippers, however that was not relevant for the surgical technique. It was also found that the intra-body suture caused an expressive volemic loss. CONCLUSION: The total and partial nephrectomy through umbilical single-access by using SITRACC® was feasible and safe in pigs.

OBJETIVO: Analisar a viabilidade do uso do SITRACC® (portal único) para realização de nefrectomia total e parcial em suínos e descrever as dificuldades técnicas encontradas durante os atos cirúrgicos propostos. MÉTODOS: Foram operados 10 porcos da espécie Landrace, com peso médio de 20 Kg, distribuidos em dois grupos: Grupo A: nefrectomia total à direita e Grupo B: nefrectomia parcial à esquerda. A indução anestésica foi realizada com a administração de tiopental (10mg/Kg) e mantida com halotano. Os procedimentos cirúrgicos foram realizados na sala de Técnica Operatória da Pontifícia Universidade Católica do Paraná (PUCPR). RESULTADOS: Foram analisados tempo total de cirurgia, tempo de colocação do SITRACC®, perda volêmica e tamanho da peça. Nas primeiras cirurgias realizadas o tempo cirúrgico e o volume do sangramento foram maiores (entre 15 - 43 minutos e entre 120 - 400 ml, respectivamente); à medida que se adquiriu prática com a técnica, esses apresentaram reduções significativas para menos que 15 minutos e 50 ml, respectivamente. A dificuldade encontrada foi na articulação das pinças, porém, não afetou a técnica cirúrgica. Além disso, houve dificuldade na realização da sutura intracorpórea acarretando uma perda volêmica maior. CONCLUSÃO: A nefrectomia total e parcial por acesso umbilical único com uso do SITRACC® é plenamente viável e segura em suínos.

Open abdominal aortic aneurysm repair in the era of endovascular repair / Reparación abierta de la aorta abdominal en la era de la reparación endovascular

OBJECTIVES: The development of minimally invasive techniques for abdominal aortic aneurysm (AAA) repair and the establishment of specialized centres have resulted in improved patient outcomes. This study examines open AAA repair at a non-specialized centre where advanced techniques are not practised. METHODS: We conducted a retrospective analysis on a cohort of 83 patients presenting for AAA repair to a non-specialized hospital, the University Hospital of the West Indies (UHWI). The end points assessed included operative (30-day) mortality, postoperative complications, duration of operation, blood loss, intensive care unit (ICU) stay and overall hospital stay. RESULTS: The overall operative mortality was 9.4% (23% for ruptured aneurysms and 5% for unruptured aneurysms). Mean operating time, blood loss, ICU stay and hospital stay were 326 ± 98 minutes, 2420 ± 1397 mls, 3 ± 5 days and 9 ± 5 days, respectively with no significant differences noted between ruptured and unruptured aneurysms. Mean aneurysm diameter was 6.13 ± 1.59 cm. CONCLUSION: Mortality rates for open aneurysm repair at the UHWI are consistent with findings in the current literature. Open AAA repair remains a safe treatment option in this environment. Continued improvements need to be made with respect to minimizing blood loss and operation duration, particularly in repairs of unruptured aneurysms.

OBJETIVOS: El desarrollo de técnicas mínimamente invasivas para la reparación del aneurisma aórtico abdominal (AAA) y el establecimiento de centros especializados para esos fines, han traído consigo el mejoramiento de los resultados clínicos de los pacientes. Este estudio examina reparaciones del tipo AAA en un centro no especializado, en el que no se practican técnicas avanzadas. MÉTODOS: Se llevo a cabo un análisis retrospectivo en una cohorte de 83 pacientes que acudieron para reparación de AAA a un hospital no especializado - el Hospital Universitario de West Indies (UHWI). Los aspectos finales evaluados incluyeron la mortalidad operatoria (30 días), las complicaciones post-operatorias, la duración de la operación, la pérdida de sangre, la estadía en la unidad de cuidados intensivos, y la estadía general en el hospital. RESULTADOS: La mortalidad operatoria general fue 9.4% (23% para los aneurismas rotos y 5% para los aneurismas no rotos). El tiempo promedio de operación, la pérdida de sangre, la estadía en la UCI, y la estadía hospitalaria fueron 326 ± 98 minutos, 2420 ± 1397 mls, 3 ± 5 días y 9 ± 5 días respectivamente, sin que se observen diferencias significativas entere aneurismas rotos y no rotos. El diámetro promedio de los aneurismas fue 6.13 ± 1.59 cm. CONCLUSIÓN: Las tasas de mortalidad para la reparación abierta de aneurismas en el UHWI concuerdan con los hallazgos en la literatura corriente. Se necesita continuar los esfuerzos por lograr mejorías en cuanto a minimizar la pérdida de sangre, y reducir el tiempo de duración de la operación, especialmente en las reparaciones de aneurismas no rotos.

Radical prostatectomy outcomes at the university hospital of the West Indies: 2000-2007 / Evolución clínica de la prostatectomía radical en el hospital universitario de West Indies: 2000-2007

OBJECTIVES: Prostate cancer is the commonest cancer in Jamaican men with an age-specific incidence of 65.5 per 100 000 and also the commonest cause of male cancer death. This study reports on the oncological outcome and morbidity after radical retropubic prostatectomy. SUBJECTS AND METHODS: The records of 116 patients with clinically localized prostate cancer (cT1c-T2) who underwent radical retropubic prostatectomy at the University Hospital of the West Indies from January 2000 to December 2007 were examined. Preoperative Prostate specific antigen (PSA), clinical stage and Gleason score were recorded. Operative time, blood loss, hospital stay and complications were assessed. Oncological outcome was assessed using biochemical progression. Disease progression was defined by PSA value of 0.4 ng/ml or greater. RESULTS: Mean patient age was 61 (43-75) years. The mean presenting PSA was 10.1 (2-25.1) ng/ml. Mean Gleason score on preoperative biopsy was 6. The commonest clinical stage was T1c (68%). Nodal involvement was seen in only one patient. The positive surgical margin rate was 15.5%. Mean operating time was 246 minutes and mean estimated blood loss was 1.44 L. The mean hospital stay was 6.9 days and 17% of patients developed minor complications, with no treatment or disease related deaths. Five-year biochemical-free survival was 78.4%. CONCLUSIONS: Oncological outcomes after radical retropubic prostatectomy in Jamaica appear to meet global standards with acceptable morbidity.

OBJETIVOS: El cáncer de la próstata es el cáncer más común entre los hombres jamaicanos con una incidencia específica por edad de 65.5 por 100 000, y es también la causa más común de la muerte por cáncer entre los hombres. Este estudio reporta la evolución clínica oncológica y la morbilidad tras la prostatectomía radical retropúbica. MÉTODOS: Se examinaron las historias clínicas de 116 pacientes con cáncer de próstata clínicamente localizado (cT1c - T2), sometidos a prostatectomía radical retropúbica en el Hospital Universitario de West Indies de enero de 2000 a diciembre 2007. Se registraron el antígeno específico de próstata (AEP) preoperativo, la etapa clínica y la puntuación de Gleason. Se evaluaron el tiempo operativo, la pérdida de sangre, la estadía hospitalaria, y las complicaciones. Se evaluó la evolución clínica oncológica usando la progresión bioquímica. La progresión de la enfermedad se definió por el valor del AEP de 0.4 ng/ml o mayor. RESULTADOS: La edad promedio de los pacientes fue 61 (43-75) años. El AEP promedio fue PSA 10.1 (2-25.1) ng/ml. La puntuación promedio Gleason en la biopsia preoperativa fue 6. La etapa clínica más común fue T1c (68%). Se observó compromiso de nódulos en sólo un paciente. La tasa de márgenes quirúrgicos positivos fue 15.5%. El tiempo promedio de operación fue 246 minutos y la pérdida de sangre promedio estimada fue 1.44 L. La estadía hospitalaria promedio fue de 6.9 días y 17% de los pacientes desarrollaron complicaciones menores, sin tratamiento o enfermedad relacionados con muertes. La supervivencia quinquenal libre del uso de productos bioquímicos fue 78.4%. CONCLUSIONES: Los resultados oncológicos después de la prostatectomía retropúbica radical en Jamaica muestran estar en correspondencia con los estándares globales con una morbilidad aceptable.

Aprotinina não influencia troponina I, NTproBNP e função renal em crianças operadas com circulação extracorpórea / High-dose aprotinin does not affect troponin I, N-Terminal pro-B-type natriuretic peptid and renal function in children submitted to surgical correction with extracorporeal circulation

Objetivo: Avaliar se o uso de aprotinina em altas doses hemostáticas pode influenciar as funções miocárdicas, renais e metabólicas em crianças operadas com circulação extracorpórea (CEC). Métodos: Estudo prospectivo randomizado em crianças de 30 dias a 4 anos de idade, submetidas à correção de cardiopatia congênita acianogênica, com CEC e divididas em dois grupos, um denominado Controle (n=9) e o outro, Aprotinina (n=10). Neste, a droga foi administrada antes e durante a CEC. As disfunções miocárdicas e multiorgânicas foram analisadas por marcadores clínicos e bioquímicos. Foram consideradas significantes as diferenças com P<0,05. Resultados: Os grupos foram semelhantes quanto às variáveis demográficas e intra-operatórias, exceto por maior hemodiluição no Grupo Aprotinina. Não houve benefício quanto aos tempos de ventilação pulmonar mecânica, permanência no Centro de Terapia Intensiva Pediátrica (CTIP) e hospitalar, nem quanto ao uso de inotrópicos e função renal. A relação PaO2/FiO2 (pressão parcial de oxigênio arterial/fração inspirada de oxigênio) apresentou queda significativa com 24h PO, no Grupo Controle. As perdas sanguíneas foram semelhantes nos dois grupos. Os marcadores troponina I cardíaca (cTnI), fração MB da creatinofosfoquinase (CKMB), transaminase glutâmico-oxalacética (TGO) e fração amino-terminal do peptídio natriurético tipo B (NT-proBNP) não apresentaram diferenças marcantes inter-grupos. A lactatemia e acidose metabólica pós-CEC foi maior no Grupo Aprotinina. Não houve complicações tromboembólicas, neurológicas ou de hipersensibilidade com o uso da aprotinina. Conclusão: A aprotinina em altas doses não influenciou significativamente nos marcadores séricos troponina I e NTproBNP e de função renal, porém foi associado com maior hemodiluição, lactatemia e acidose metabólica.

Objective: To evaluate if the use of hemostatic high-dose aprotinin seems influence to myocardial, renal and metabolic functions in children submitted to surgical correction with extracorporeal circulation (ECC). Material and Methods A prospective randomized study was conducted on children aged 30 days to 4 years submitted to correction of acyanogenic congenital heart disease with ECC and divided into two groups: Control (n=9) and Aprotinin (n=10). In the Aprotinin Group the drug was administered before and during ECC and the myocardial and multiorgan dysfunctions were analyzed on the basis of clinical and biochemical markers. Differences were considered to be significant when P<0.05. Results: The groups were similar regarding demographic and intraoperative variables, except for a greater hemodilution in the Aprotinin Group. The drug had no benefit regarding time of mechanical pulmonary ventilation, permanence in the pediatric postoperative intensive care unit (ICU) and length of hospitalization, or regarding the use of inotropic drugs and renal function. The partial arterial oxygen pressure/inspired oxygen fraction ratio (PaO2/FiO2) was significantly reduced 24h after surgery in the Control Group. Blood loss was similar for both groups. Cardiac troponin I (cTnI), creatine kinase MB fraction (CKMB), serum glutamic-oxaloacetic transaminase (SGOT) and the aminoterminal fraction of natriuretic peptide type B (NT-proBNP) did not differ significantly between groups. Post-ECC blood lactate concentration and metabolic acidosis was more intense in the Aprotinin Group. There were no complications with the use of aprotinin. Conclusion: High-dose aprotinin did not significant influence in serum markers troponin I, NT-proBNP and renal function, but did associated with hemodilution, blood lactate concentration and metabolic acidosis more intense.

Avaliação da perda sanguinea em artroplastia total primária do joelho com drenagem de sucção: estudo prospectivo

Foram analisados,prospectivamente, 200 artroplastias totais do joelho do tipo condilar cimentada, em pacientes portadores de osteoartrose e artrite reumatóide, entre junho de 2007 e janeiro de 2008. A finalidade do estudo foi avaliar a perda sanguinea com utilização de drenagem de sucção pós artroplastia. Foram mensuradas as taxas de hemoglobina antes e depois da cirurgia e a relação destas com a necessidade de transfusão. Avaliou-se também a significância de alguns fatores adicionais como: tipo de acesso,liberação da isquemia seguida de hemostasia ou liberação da isquemia pós-curativo. A análise dos resultados demonstrou diminuição da hemoglobina e hematócrito no período pós-operatório, porém sem significância estática, independente da abordagem cirúrgica seguida durante o procedimento, não existindo ainda evidências de superioridade de um tipo de planejamento cirúrgico a se seguir

Hydrogen peroxide 3%: Is it beneficial in tonsillectomy?

The world over, tonsillectomy is one of the operations most frequently performed by otolaryngologists, who are in search of a technique of tonsillectomy where the operation time and operative blood loss is reduced. This study was carried out to evaluate the effect of hydrogen peroxide 3% on tonsillectomy times, blood loss during the surgery and on the number of ties used. A pilot study of 30 patients was carried out in the Department of Otolaryngology of Basrah General Hospital, Iraq, in the period from February to July 2006. Tonsillectomy was performed using hydrogen peroxide 3% as a haemostatic agent in Group A [n = 15], while in Group B [n = 15] no agent was used with the gauze pack. The application of hydrogen peroxide 3% in the tonsillar fossae reduced the operation time by 31%, the operative blood loss by 32.9% and also reduced the number of ties used by 50% in Group A. All these results are statistically significant. The local application of 3% hydrogen peroxide on the tonsillar bed after tonsillectomy is beneficial in regard to decreasing the procedure time, the volume of blood loss, and the number of ties used

Endoscopic transaxillary thyroid lobectomy: flexible vs rigid laparoscope.

BACKGROUND: The use of the endoscopic procedure for thyroid lobectomy in benign solitary thyroid nodule has been developed rapidly and increasingly refined in recent years. The early results are technically feasible, safe and mainly provide promising cosmetic results, some show a quicker recovery. The authors wanted to know if this procedure can be performed via rigid laparoscope which is simple, less expensive and widely available in many surgical centers. OBJECTIVES: The aims of this study were to evaluate operative time, blood loss, complication of flexible compared to 30 degrees rigid laparoscope in endoscopic transaxillary thyroid lobectomy for solitary thyroid nodule. METHOD: From February 2004 to June 2004, 13 cases of benign solitary thyroid nodule underwent the endoscopic transaxillary thyroid lobectomy. Flexible laparoscope techniques were performed in 9 cases and 30 degrees rigid laparoscope in the other 4 cases. Port site, number of ports and dissected method were the same in both procedures by the same surgeon. Operative time, blood loss, post-operative results were measured for evaluation. RESULTS: From 13 cases, 9 in the flexible laparoscope group and 4 in the rigid laparoscope group. All but one in the flexible group with torn internal jugular vein were successful. The mean operation time was 165.42 +/- 35.06 minutes, which was 175.63 +/- 35.70 minutes for flexible laparoscope group and 145 +/- 26.45 minutes for rigid laparoscope group. There was no recurrent laryngeal nerve injury and no subcutaneous emphysema. The patients were satisfied with the cosmetic results. CONCLUSION: On the basis of early experience with these 13 patients, the authors believe that endoscopic thyroidectomy using the rigid laparoscope has proved to be no different in the intra-operative results, so the authors do aimed to show that with the rigid laparoscope which is available in many surgical centers, less expensive and easy in maintenance will provide another surgical option for treatment of thyroid nodule, with maximized cosmetic effect.

Fatores de risco de sangramento no pós-operatório de cirurgia cardíaca em pacientes adultos / Risk factors for postoperative bleeding after adult cardiac surgery

OBJETIVO: Determinar os fatores de risco de sangramento no pós-operatório de cirurgia cardíaca, na tentativa de racionalizar as medidas preventivas em populações específicas. MÉTODO: No período outubro de 2001 a março de 2002, foram estudados prospectivamente 411 pacientes consecutivos submetidos a tratamento cirúrgico de cardiopatias adquiridas, excluindo o transplante cardíaco. No intuito de identificar os fatores preditores de sangramento excessivo, foram analisadas 20 variáveis pré-operatórias, 17 operatórias e seis pós-operatórias por análise univariada e regressão linear múltipla. RESULTADOS: Os procedimentos cirúrgicos incluíram a revascularização do miocárdio em 227 (55,2 por cento) pacientes, cirurgia valvar em 198 (48,2 por cento), tratamento cirúrgico de doenças da aorta em 25 (6,1 por cento) e procedimentos combinados em 60 (14,6 por cento). A circulação extracorpórea foi empregada em 335 (81,5 por cento) pacientes e o uso de drogas antifibrinolíticas em 148 (36 por cento). A mortalidade em 30 dias foi de 5,6 por cento (23 pacientes). O volume médio de sangramento em 24 horas foi de 610 mais ou menos 500 ml (variação 10-4900). A revisão cirúrgica de hemostasia foi necessária em 15 (3,7 por cento) pacientes. Os fatores preditores independentes de sangramento excessivo pós-operatório foram a operação de emergência (p=0,049), acidose metabólica pós-operatória (p=0,001), plaquetopenia pré-operatória (p=0,034) e tempo prolongado de circulação extracorpórea (p=0,021). CONCLUSÕES: Pacientes submetidos a operações de emergência e aqueles com plaquetopenia necessitam, na medida do possível, de otimização das condições clínicas pré-operatórias. O uso de circulação extracorpórea deve ser minimizado ao máximo, principalmente em relação a sua duração. A acidose metabólica no pós-operatório deve ser corrigida agressivamente, na busca da sua causa principal.

Pruebas de coagulación prequirúrgicas anormales y su asociación con complicación hemorrágica transquirúrgica, en cirugía electiva / Abnormal Pre-Surgical Tests and Their Association with Tramp-Surgical Hemorrhagic Complication in Elective Surgery

Objetivo: determinar si existe asociación entre pruebas de coagulación prequirúrgicas (PCP) anormales y el desarrollo de hemorragia transquirúrgica (HTQ), en cirugía electiva. Material y métodos: durante el año 2002 se seleccionaron en forma no probabilística a pacientes > 18 años intervenidos quirúrgicamente en un hospital de tercer nivel de atención médica en Mérida, Yucatán en los que se buscó HTQ. Ésta se dio cuando la hemorragia en el lecho quirúrgico fue > 300 ml. Las PCP medidas fueron el tiempo de protrombina (TP) y el tiempo de tromboplastina parcial (TTP). Los datos se analizaron con estadística inferencial. Resultados: TP o TTP fue solicitado a 100% de los pacientes; el primero estuvo prolongado en 26 (15%) y el segundo en 14 (8%). Los eventos hemorrágicos se documentaron en 30 casos (18%). Entre aquellos con o sin hemorragia, los valores promedio del TP o del TTP no fueron significativamente diferentes (P= 0.76 y P= 0.83, respectivamente). Asimismo, las PCP anormales, tampoco se asociaron significativamente con la presencia de HTQ (Prueba exacta de Fisher con P> 0.05 para cada una). Conclusión: en este grupo de pacientes las PCP anormales, no se asociaron con HTQ.

Main objective: To determine whether abnormal preoperative coagulation tests (PCT) are relatedto trans-surgical bleeding complication (TSBC) during elective surgical procedures. Material and methods. Adult patients, undergone some elective surgical procedure in a tertiary care medical center, in Merida, Yucatan, Mexico in whom TSBC was looked for, were selected in a non-random fashion and included. TSBC was considered when bleeding in the surgical bed was >300 ml. Prothrombin time (PT) and partial thromboplastin time (PTT) were the PCT measured and compared against TSBC. To analyze data, inferential statistics was used. Results: Eighty four males (49%) and 86 females (51%), were included. PT, PTT or both were requested to 100% of the them. PT was prolonged in 26 (15%), and PTT was prolonged in 14 (8%) patients. TSBC was documented in 30 patients (18%), although among those with and without bleeding, neither PT averages difference (P=0.76), nor PTT averages difference (P=0.83), were statistically significant. In comparing TSBC and its relationship to abnormal PCT, again neither PT nor PTT were associated with bleeding (Fisher's exact tests for each: P= 0.41 and P= 1.0, respectively). Conclusion: In this sample, abnormal PCT were not associated with TSBC.

Uso del ácido épsilon-aminocaproico para disminuir el sangrado en la cirugía de escoliosis: ensayo clínico / Use of epsilon-aminocaproic acid to reduce bleeding in scoliosis surgery: clinical trial

Introducción: La anestesia para la corrección de las deformidades del raquis ha sido motivo de preocupación debido a la gran agresión al paciente, fundamentalmente por las cuantiosas pérdidas sanguíneas que se producen. Actualmente, el enfoque farmacológico para la prevención del sangrado ha cobrado gran interés para muchos autores, empleándose fármacos antifibrinolíticos como el ácido épsilon-aminocaproico. Objetivos: Evaluar el efecto de este fármaco como agente fibrinolítico en la corrección quirúrgica de la escoliosis y su influencia sobre los resultados de los factores que regulan la hemostasia en el período perioperatorio. Material y método: Se realizó un ensayo clínico en 42 pacientes subdivididos secuencialmente en dos grupos. A los pacientes del Grupo I se les administró una dosis de 5 g de EACA previo a la incisión de la piel, seguido por la infusión continua de 1 g/h hasta el cierre de la piel. El Grupo II no fue tratado con EACA. Se realizó coagulograma durante el preoperatorio, el intraoperatorio y el postoperatorio inmediato. Se cuantificó el sangrado intraoperatorio (ml) por aspiración del campo operatorio y por el pesaje de las compresas. Durante la estancia en la sala de recuperación se evaluó el sangrado postoperatorio a las 2 y a las 24 horas, clasificándolo en escaso, moderado y severo. Resultados: En todos los momentos el sangrado fue mayor en el Grupo II. El coagulograma fue normal en un mayor porcentaje de pacientes del Grupo I, a la vez que los valores de hematocrito fueron mayores y menor el número de transfusiones. Existieron diferencias significativas entre ambos grupos (p < 0,05). Conclusiones: En todos los momentos los valores anormales de coagulograma y de sangrado fueron mayores en el Grupo II; el ácido épsilon-aminocaproico resultó ser un fármaco eficaz en la prevención del sangrado intraoperatorio en pacientes operados de escoliosis. No fueron encontrados efectos adversos con el uso de esta droga.

Laparoscopic hysterectomy using laparosonic coagulating shears: experience of 15 cases.

In conventional laparoscopic hysterectomy, adequate hemostasis is provided by bipolar coagulation, staple, and suture. The Laparosonic Coagulating Shears (LCS) have been proven to give both hemostasis and cutting. The objective of this study was to evaluate the efficacy of the LCS for laparoscopic hysterectomy. Fifteen patients indicated for hysterectomy were enrolled for laparoscopic hysterectomy using LCS. Each procedure was performed under general endotracheal anesthesia. The LCS were operated at power level 1 though 5. All pedicles, blood vessels, and tissues were coagulated and cut by LCS. The cardinal ligaments were cut and ligated transvaginally. The uterus was removed through the vagina. The operative finding, uterine volume and weight, operative time, CO2 volume, blood loss and hospital stay were recorded. Among the 15 cases, the indications were myoma uteri (7 cases), adenomyosis (6 cases) and adenomyosis with endometriomas (2 cases). The mean volume of the uterus was 226.8 cm3 (range 77-399 cm3) and mean weight was 188.8 g (range 85-320 g). Mean operative time was 171.6 min (range 114-210 min) and CO2 loss was 313.8 liters (range 120-650 liters). Blood loss was 366.7 ml (range 100-1,500 ml). LCS can be used for coagulation and cutting simultaneously. Minimal charring and smoke was observed during operation. In general, the hospital stay was 3 days (range 2-4 days), except for one case of recto-sigmoid injury and 2 cases of ureteric injury when the hospital stay was 7, 10, and 12 days, respectively. The injuries occurred in cases with anatomic distortion, profuse bleeding, and dense adhesion. LCS can be used as an alternative instrument for coagulation and dissection. According to our experience, it produces less charring and smoke compared to electrocoagulation. However, a high rate of complications were still encountered.