Umbral crítico de administración en pacientes con trauma severo y reanimación endovascular: ¿Un concepto útil? / Critical Administration Threshold in severe trauma patients and endovascular resuscitation: A useful concept?

Introducción. Se describe la utilidad del umbral crítico de administración (CAT por su denominación en inglés) como herramienta para la reanimación hemostática en pacientes con trauma severo y oclusión endovascular aórtica. Métodos. Revisión retrospectiva de pacientes adultos con hemorragia por trauma, con o sin oclusión endovascular aórtica (REBOA), atendidos entre enero de 2015 y junio de 2020, en un centro de trauma nivel I en Cali, Colombia. Se registraron variables demográficas, severidad del trauma, estado clínico, requerimiento transfusional, tiempo hasta CAT+ y CAT alcanzado (1, 2 ó 3). Resultados. Se incluyeron 93 pacientes, se utilizó REBOA en 36 y manejo tradicional en 57. El grupo REBOA presentó mayor volumen de sangrado (mediana de 3000 ml, RIC: 1950-3625 ml) frente al grupo control (mediana de1500 ml, RIC: 700-2975ml) (p<0,001) y mayor cantidad de glóbulos rojos transfundidos en las primeras 6 horas (mediana de 5, RIC:4-9); p=0,015 y en las primeras 24 horas (mediana de 6, RIC: 4-11); p=0,005. No hubo diferencias estadísticamente significativas en número de pacientes CAT+ entre grupos o tiempo hasta alcanzarlo. Sin embargo, el estado CAT+ durante los primeros 30 minutos de la cirugía fue mayor en grupo REBOA (24/36, 66,7 %) frente al grupo control (17/57, 29,8 %; p=0,001), teniendo este mayor tasa de mortalidad intrahospitalaria frente a los pacientes CAT-. Conclusión. El umbral crítico de administración es una herramienta útil en la reanimación hemostática de pacientes con trauma y REBOA, que podría predecir mortalidad precoz.

Introduction. The objective is to describe the utility of the Critical Administration Threshold (CAT) as a tool in hemostatic resuscitation in patients with severe trauma and REBOA. Methods. Retrospective review between January 2015 and June 2020 of adult patients with hemorrhage secondary to trauma with or without REBOA in a level I trauma center in Cali, Colombia. Demographic variables, trauma severity, clinical status, transfusion needs, time to CAT+ and number of CAT achieved (1, 2 or 3) were recorded. Results. Ninety-three patients were included, in which REBOA was used in 36 and traditional management in 57. The REBOA group had a higher bleeding volume (3000 ml), IQR: 1950-3625 ml vs the control group (1500 ml, IQR: 700-2975 ml) (p<0.001) and a higher rate of PRBC units transfused in the first 6 hours (median 5, IQR: 4-9); p=0.015 and in the first 24 hours (median 6, IQR: 4-11); p=0.005. There were no statistically significant differences in the number of CAT+ patients between groups or time to CAT+. However, CAT+ status during the first 30 minutes of surgery was higher in the REBOA Group (24/36, 66.7%) vs. the control group (17/57, 29.8%; p=0.001), having this group a higher in-hospital mortality rate vs. CAT- patients. Conclusion. CAT is a useful tool in the hemostatic resuscitation of patients with trauma and REBOA that could predict early mortality.

Risk factors for posttraumatic empyema in diaphragmatic injuries.

BACKGROUND: Penetrating diaphragmatic injuries are associated with a high incidence of posttraumatic empyema. We analyzed the contribution of trauma severity, specific organ injury, contamination severity, and surgical management to the risk of posttraumatic empyema in patients who underwent surgical repair of diaphragmatic injuries at a level 1 trauma center. METHODS: This is a retrospective review of the patients who survived more than 48 h. Univariate OR calculations were performed to identify potential risk factors. Multiple logistic regression was used to calculate adjusted ORs and identify independent risk factors. RESULTS: We included 192 patients treated from 2011 to 2020. There were 169 (88.0) males. The mean interquartile range, (IQR) of age, was 27 (22-35) years. Gunshot injuries occurred in 155 subjects (80.7%). Mean (IQR) NISS and ATI were 29 (18-44) and 17 (10-27), respectively. Thoracic AIS was > 3 in 38 patients (19.8%). Hollow viscus was injured in 105 cases (54.7%): stomach in 65 (33.9%), colon in 52 (27.1%), small bowel in 42 (21.9%), and duodenum in 10 (5.2%). Visible contamination was found in 76 patients (39.6%). Potential thoracic contamination was managed with a chest tube in 128 cases (66.7%), with transdiaphragmatic pleural lavage in 42 (21.9%), and with video-assisted thoracoscopy surgery or thoracotomy in 22 (11.5%). Empyema occurred in 11 patients (5.7%). Multiple logistic regression identified thoracic AIS > 3 (OR 6.4, 95% CI 1.77-23. 43), and visible contamination (OR 5.13, 95% IC 1.26-20.90) as independent risk factors. The individual organ injured, or the method used to manage the thoracic contamination did not affect the risk of posttraumatic empyema. CONCLUSION: The severity of the thoracic injury and the presence of visible abdominal contamination were identified as independent risk factors for empyema after penetrating diaphragmatic trauma.

Damage control surgery in lung trauma.

Damage control techniques applied to the management of thoracic injuries have evolved over the last 15 years. Despite the limited number of publications, information is sufficient to scatter some fears and establish management principles. The severity of the anatomical injury justifies the procedure of damage control in only few selected cases. In most cases, the magnitude of the physiological derangement and the presence of other sources of bleeding within the thoracic cavity or in other body compartments constitutes the indication for the abbreviated procedure. The classification of lung injuries as peripheral, transfixing, and central or multiple, provides a guideline for the transient bleeding control and for the definitive management of the injury: pneumorraphy, wedge resection, tractotomy or anatomical resection, respectively. Identification of specific patterns such as the need for resuscitative thoracotomy, or aortic occlusion, the existence of massive hemothorax, a central lung injury, a tracheobronchial injury, a major vascular injury, multiple bleeding sites as well as the recognition of hypothermia, acidosis or coagulopathy, constitute the indication for a damage control thoracotomy. In these cases, the surgeon executes an abbreviated procedure with packing of the bleeding surfaces, primary management with packing of some selected peripheral or transfixing lung injuries, and the postponement of lung resection, clamping of the pulmonary hilum in the most selective way possible. The abbreviation of the thoracotomy closure is achieved by suturing the skin over the wound packed, or by installing a vacuum system. The management of the patient in the intensive care unit will allow identification of those who require urgent reintervention and the correction of the physiological derangement in the remaining patients for their scheduled reintervention and definitive management.

Las técnicas de control de daños aplicadas al manejo de lesiones torácicas han evolucionado en los últimos 15 años. A pesar de que el número de publicaciones es limitado, la información es suficiente para desvirtuar algunos temores y establecer los principios de manejo. La severidad del compromiso anatómico justifica el procedimiento de control de daños solamente en algunos casos. En la mayoría, la magnitud del deterioro fisiológico y la presencia de otras fuentes de sangrado dentro del tórax o en otros compartimientos corporales constituyen la indicación del procedimiento abreviado. La clasificación de la lesión pulmonar como periférica, transfixiante y central o múltiple, proporciona una pauta para el control transitorio del sangrado y para el manejo definitivo de la lesión: neumorrafía, resección en cuña, tractotomía o resecciones anatómicas, respectivamente. La identificación de ciertos patrones como la necesidad de toracotomía de reanimación o de oclusión aórtica, la existencia de un hemotórax masivo, de una lesión pulmonar central, una lesión traqueobronquial o una lesión vascular mayor, así como el reconocimiento de hipotermia, acidosis o coagulopatía, constituyen la indicación de una toracotomía de control de daños. En estos casos, el cirujano concluye de manera abreviada los procedimientos con empaquetamiento de las superficies sangrantes, el manejo primario con empaquetamiento de algunas lesiones pulmonares periféricas o transfixiante seleccionadas y el aplazamiento de la resección pulmonar, pinzando el hilio de la manera más selectiva posible. La abreviación del cierre de la toracotomía se logra con la sutura de la piel sobre el empaquetamiento de la herida, o mediante la instalación de un sistema de presión negativa. El manejo del paciente en cuidados intensivos permitirá identificar aquellos que requieren reintervención urgente y corregir la alteración fisiológica de los restantes para su reoperación programada y manejo definitivo.

Damage control in abdominal vascular trauma

In patients with abdominal trauma who require laparotomy, up to a quarter or a third will have a vascular injury. The venous structures mainly injured are the vena cava (29%) and the iliac veins (20%), and arterial vessels are the iliac arteries (16%) and the aorta (14%). The initial approach is performed following the ATLS principles. This manuscript aims to present the surgical approach to abdominal vascular trauma following damage control principles. The priority in a trauma laparotomy is bleeding control. Hemorrhages of intraperitoneal origin are controlled by applying pressure, clamping, packing, and retroperitoneal with selective pressure. After the temporary bleeding control is achieved, the compromised vascular structure must be identified, according to the location of the hematomas. The management of all lesions should be oriented towards the expeditious conclusion of the laparotomy, focusing efforts on the bleeding control and contamination, with a postponement of the definitive management. Their management of vascular injuries includes ligation, transient bypass, and packing of selected low-pressure vessels and bleeding surfaces. Subsequently, the unconventional closure of the abdominal cavity should be performed, preferably with negative pressure systems, to reoperate once the hemodynamic alterations and coagulopathy have been corrected to carry out the definitive management.

En pacientes con trauma de abdomen que requieren laparotomía, hasta una cuarta o tercera parte, habrán sufrido una lesión vascular. Las estructuras venosas principalmente lesionadas son la vena cava y las iliacas, y de vasos arteriales, son las iliacas y la aorta. El abordaje de este tipo de heridas vasculares se puede ser difícil en el contexto de un paciente hemodinámicamente inestable ya que requiera medidas rápidas que permita controlar la exanguinación del paciente. El objetivo de este manuscrito es presentar el abordaje del trauma vascular abdominal de acuerdo con la filosofía de cirugía de control de daños. La primera prioridad en una laparotomía por trauma es el control de la hemorragia. Las hemorragias de origen intraperitoneal se controlan con compresión, pinzamiento o empaquetamiento, y las retroperitoneales con compresión selectiva. Posterior al control transitorio de la hemorragia, se debe identificar la estructura vascular comprometida, de acuerdo con la localización de los hematomas. El manejo de las lesiones debe orientarse a la finalización expedita de la laparotomía, enfocado en el control de la hemorragia y contaminación, con aplazamiento del manejo definitivo. Lo pertinente al tratamiento de las lesiones vasculares incluyen la ligadura, derivación transitoria y el empaquetamiento de vasos seleccionados de baja presión y de superficies sangrantes. Posteriormente se debe realizar el cierre no convencional de la cavidad abdominal, preferiblemente con sistemas de presión negativa, para consecutivamente reoperar una vez corregidas las alteraciones hemodinámicas y la coagulopatía para realizar el manejo definitivo.

Damage control surgery in lung trauma / Cirugía de control de daños del trauma pulmonar

Abstract Damage control techniques applied to the management of thoracic injuries have evolved over the last 15 years. Despite the limited number of publications, information is sufficient to scatter some fears and establish management principles. The severity of the anatomical injury justifies the procedure of damage control in only few selected cases. In most cases, the magnitude of the physiological derangement and the presence of other sources of bleeding within the thoracic cavity or in other body compartments constitutes the indication for the abbreviated procedure. The classification of lung injuries as peripheral, transfixing, and central or multiple, provides a guideline for the transient bleeding control and for the definitive management of the injury: pneumorraphy, wedge resection, tractotomy or anatomical resection, respectively. Identification of specific patterns such as the need for resuscitative thoracotomy, or aortic occlusion, the existence of massive hemothorax, a central lung injury, a tracheobronchial injury, a major vascular injury, multiple bleeding sites as well as the recognition of hypothermia, acidosis or coagulopathy, constitute the indication for a damage control thoracotomy. In these cases, the surgeon executes an abbreviated procedure with packing of the bleeding surfaces, primary management with packing of some selected peripheral or transfixing lung injuries, and the postponement of lung resection, clamping of the pulmonary hilum in the most selective way possible. The abbreviation of the thoracotomy closure is achieved by suturing the skin over the wound packed, or by installing a vacuum system. The management of the patient in the intensive care unit will allow identification of those who require urgent reintervention and the correction of the physiological derangement in the remaining patients for their scheduled reintervention and definitive management.

Resumen Las técnicas de control de daños aplicadas al manejo de lesiones torácicas han evolucionado en los últimos 15 años. A pesar de que el número de publicaciones es limitado, la información es suficiente para desvirtuar algunos temores y establecer los principios de manejo. La severidad del compromiso anatómico justifica el procedimiento de control de daños solamente en algunos casos. En la mayoría, la magnitud del deterioro fisiológico y la presencia de otras fuentes de sangrado dentro del tórax o en otros compartimientos corporales constituyen la indicación del procedimiento abreviado. La clasificación de la lesión pulmonar como periférica, transfixiante y central o múltiple, proporciona una pauta para el control transitorio del sangrado y para el manejo definitivo de la lesión: neumorrafía, resección en cuña, tractotomía o resecciones anatómicas, respectivamente. La identificación de ciertos patrones como la necesidad de toracotomía de reanimación o de oclusión aórtica, la existencia de un hemotórax masivo, de una lesión pulmonar central, una lesión traqueobronquial o una lesión vascular mayor, así como el reconocimiento de hipotermia, acidosis o coagulopatía, constituyen la indicación de una toracotomía de control de daños. En estos casos, el cirujano concluye de manera abreviada los procedimientos con empaquetamiento de las superficies sangrantes, el manejo primario con empaquetamiento de algunas lesiones pulmonares periféricas o transfixiante seleccionadas y el aplazamiento de la resección pulmonar, pinzando el hilio de la manera más selectiva posible. La abreviación del cierre de la toracotomía se logra con la sutura de la piel sobre el empaquetamiento de la herida, o mediante la instalación de un sistema de presión negativa. El manejo del paciente en cuidados intensivos permitirá identificar aquellos que requieren reintervención urgente y corregir la alteración fisiológica de los restantes para su reoperación programada y manejo definitivo.

Damage control in abdominal vascular trauma.

In patients with abdominal trauma who require laparotomy, up to a quarter or a third will have a vascular injury. The venous structures mainly injured are the vena cava (29%) and the iliac veins (20%), and arterial vessels are the iliac arteries (16%) and the aorta (14%). The initial approach is performed following the ATLS principles. This manuscript aims to present the surgical approach to abdominal vascular trauma following damage control principles. The priority in a trauma laparotomy is bleeding control. Hemorrhages of intraperitoneal origin are controlled by applying pressure, clamping, packing, and retroperitoneal with selective pressure. After the temporary bleeding control is achieved, the compromised vascular structure must be identified, according to the location of the hematomas. The management of all lesions should be oriented towards the expeditious conclusion of the laparotomy, focusing efforts on the bleeding control and contamination, with a postponement of the definitive management. Their management of vascular injuries includes ligation, transient bypass, and packing of selected low-pressure vessels and bleeding surfaces. Subsequently, the unconventional closure of the abdominal cavity should be performed, preferably with negative pressure systems, to reoperate once the hemodynamic alterations and coagulopathy have been corrected to carry out the definitive management.

En pacientes con trauma de abdomen que requieren laparotomía, hasta una cuarta o tercera parte, habrán sufrido una lesión vascular. Las estructuras venosas principalmente lesionadas son la vena cava y las iliacas, y de vasos arteriales, son las iliacas y la aorta. El abordaje de este tipo de heridas vasculares se puede ser difícil en el contexto de un paciente hemodinámicamente inestable ya que requiera medidas rápidas que permita controlar la exanguinación del paciente. El objetivo de este manuscrito es presentar el abordaje del trauma vascular abdominal de acuerdo con la filosofía de cirugía de control de daños. La primera prioridad en una laparotomía por trauma es el control de la hemorragia. Las hemorragias de origen intraperitoneal se controlan con compresión, pinzamiento o empaquetamiento, y las retroperitoneales con compresión selectiva. Posterior al control transitorio de la hemorragia, se debe identificar la estructura vascular comprometida, de acuerdo con la localización de los hematomas. El manejo de las lesiones debe orientarse a la finalización expedita de la laparotomía, enfocado en el control de la hemorragia y contaminación, con aplazamiento del manejo definitivo. Lo pertinente al tratamiento de las lesiones vasculares incluyen la ligadura, derivación transitoria y el empaquetamiento de vasos seleccionados de baja presión y de superficies sangrantes. Posteriormente se debe realizar el cierre no convencional de la cavidad abdominal, preferiblemente con sistemas de presión negativa, para consecutivamente reoperar una vez corregidas las alteraciones hemodinámicas y la coagulopatía para realizar el manejo definitivo.

Stump appendicitis, a case report and a review of the literature. Is it as uncommon as it is thought?

INTRODUCTION: Acute appendicitis (AA) is the most common cause of acute surgical abdomen. Complications from surgical appendectomy include intraabdominal abscess, bleeding, surgical site infections, ileus, and stump appendicitis (SA). This last one is one of the least common ones with a reported incidence of 1:50.000. METHODS: We present a case and review 132 cases of SA reported in the literature. Demographic and clinical characteristics were evaluated, as well as details of the surgical treatment. Categorical variables are presented as quantities and proportions, and continuous variables with median and interquartile range. Additionally, we calculate an incidence from 3 papers reported in the literature and our own. RESULTS: We analyzed 132 cases, 60.3 % were male with a median age at SA of 33 years. There was a wide range time interval between the episode of AA and SA from 1 day to 60 years. Initial open appendectomy was reported in 62 cases. From all the patients with SA 51 % reported complications. The median length of the appendiceal stump was 3 cm. The incidence of SA fluctuated between 0.22-1.37 in 1.000 cases of appendectomies. DISCUSSION: SA is usually underrated, and which are the risk factors for this condition are not clear. The data available suggest that a primary laparoscopic appendectomy is not related to SA, but the length of the stump left in the first surgery might be associated. The incidence of SA seems to be higher than the one reported of 1 in 50.000.

Bench Validation of a Handcrafted Prototype Catheter for Intra-gastric Pressure Monitoring.

BACKGROUND: Abdominal compartment syndrome is a sustained intra-abdominal pressure (IAP) >20 mm Hg associated with new organ dysfunction. In order to prevent its development and related complications, IAP monitoring should be performed in patients with risk factors. Although techniques for its monitoring have been developed, they are of high cost and not always available in low- and lower-middle-income countries. Therefore, we aim to develop and validate in a bench model a handcrafted catheter to be used as an alternative method to measure the intra-gastric pressure (IGP) as a surrogate of the IAP. METHODS: We used an acrylic water container as a model of the abdomen and four handcrafted catheters made of a 16 Fr Levin tube with a globe finger tied with silk in the distal end, inflated with 1 cm of air. They were placed on the bottom of the container where the water pressure was directly measured as a gold standard. The agreement between the two measures was assessed with the Bland-Altman method. RESULTS: We performed 120 simultaneous measures. The mean pressure difference was 0.218 (95% CI 0.074 to 0.363). CONCLUSIONS: The handcrafted prototype catheter and the direct measure were highly correlated. The new catheter is a reliable and reproducible tool for pressure monitoring. However, before it can be used in the clinical setting for IAP monitoring, validation in human models in a real clinical setting needs to be performed.

Desenlace materno-fetal en pacientes con diagnóstico temprano o tardío de diabetes gestacional / Maternal and fetal outcome in early and late diagnosis of gestational diabetes

Resumen OBJETIVO: Comparar el desenlace materno y fetal en pacientes con diabetes gestacional diagnosticada en la primera y segunda mitad del embarazo. MATERIALES Y MÉTODOS: Estudio observacional, retrospectivo y analítico que incluyó a todas las pacientes con diabetes gestacional tratadas en el Hospital de la Mujer de la Ciudad de México entre los meses de marzo de 2014 y diciembre de 2017. Las pacientes se dividieron en, grupo 1: diagnosticadas entre las 13 y 20.6 semanas de embarazo y grupo 2: con diagnóstico posterior. Se identificaron y compararon las principales complicaciones maternas y fetales. El análisis incluyó medidas de tendencia central, t de Student y χ2. RESULTADOS: Se incluyeron 459 pacientes; 147 embarazadas en el grupo 1 y 312 en el grupo 2. La enfermedad hipertensiva del embarazo (32.7 vs 17.6% p 0.001) y el hiper e hipotiroidismo (7.5 vs 1.6% p 0.001) fueron más frecuentes en el grupo 1. El peso al nacimiento (3054 ± 718.4 vs. 3156 ± 555.7 g. p 0.04) la talla (48.9 ± 3.49 vs 49.2 ± 2.7 cm p 0.05) y el Capurro (37.9 ± 2.5 vs 38.2 ± 1.4 semanas p 0.01) fueron mayores en los neonatos hijos de madres del grupo 2. CONCLUSIÓN: El desenlace materno y fetal de pacientes con diabetes gestacional se modifica de acuerdo con las semanas de embarazo al momento del diagnóstico; por esto debe insistirse en la detección oportuna de las complicaciones descritas con el propósito de reducir las repercusiones de la diabetes gestacional en la madre y su hijo.

Abstract OBJECTIVE: To compare the fetal maternal outcomes in patients with gestational diabetes detected in the first and second half of pregnancy. MATERIALS AND METHODS: An observational, retrospective and analytical study was carried out including all patients with gestational diabetes treated at the Women's Hospital of Mexico City in the years 2014 to 2017. Were divided into two groups, group 1 inserted those patients diagnosed between 13 and 20.6 weeks of gestation and 2 with subsequent diagnosis, the main maternal and fetal complications were identified and compared. The results analysis included central trend measures, Student's t and square Chi. RESULTS: 495 patients were included; Group 1 was composed of 147 pregnant women and group 2 of 312. Maternal complications such as hypertensive disease of pregnancy (32.7 vs 17.6% p 0.001), hyperthyroidism and hypothyroidism (7.5 vs 1.6% p 0.001) were more frequent at the group 1. The birth weight (3054 ± 718.4 vs. 3156 ± 555.7 g. p 0.04), height (48.9 ± 3.49 vs 49.2 ± 2.7 cm p 0.05) and Capurro rating (37.9 ± 2.5 vs 38.2 ± 1.4 weeks p 0.01) were greater in infants in Group 2. CONCLUSION: The maternal fetal outcome in patients with gestational diabetes are modified by gestational age at the time of diagnosis, so greater emphasis should be placed on the timely detection of these complications in order to reduce the impact of gestational diabetes in the mother's binomial.