Bloqueo del músculo erector de la espina como rescate analgésico para control de dolor agudo postoperatorio en fractura de escápula: reporte de caso / Erector spinae plane block as an analgesic rescue to acute control postoperative pain in scapula fracture: case report

Resumen: Introducción: el bloqueo en el plano del músculo erector de la espina (ESPB, por sus siglas en inglés) es un procedimiento seguro, en teoría menos exigente que las técnicas convencionales de anestesia regional torácica. Se utiliza para el tratamiento del dolor agudo y crónico. En la revisión de la literatura, no se encontraron informes de su uso como una técnica única en el dolor agudo de fractura de escápula. Presentación de caso: se reporta un caso clínico de ESPB como técnica experimental para el control del dolor postoperatorio agudo en fracturas de la escápula con aplicación a nivel T2. Se llevó a cabo postoperatorio con disminución de dolor después de 10 minutos de realizado, con una calificación de cero en la escala análoga del dolor. En este caso el ESPB fue realizado en el postoperatorio inmediato, con lo que se logró una disminución total del dolor a los 10 minutos, con posterior control de dolor a las 36 horas. Conclusión: este caso muestra la efectividad de ESPB como técnica experimental para control de dolor postoperatorio en fractura de escápula.

Abstract: Introduction: the erector spine plane block (ESPB) is a safe procedure, technically is less demanding than conventional thoracic regional anesthesia techniques. It is used for the treatment of acute and chronic pain. In the literature review, no reports of its use as a single technique in the acute pain of scapula fracture were found. Case presentation: ESPB is reported in a case as an experimental technique for controlling acute postoperative pain in scapula fractures with an application at the T2 level. It was performed postoperatively with a decrease in pain after 10 minutes and a score of zero on the analog pain scale. In this case, the ESPB was performed in the immediate postoperative period, achieving a total decrease in pain at 10 minutes, with subsequent pain control at 36 hours. Conclusion: this case shows the effectiveness of ESPB as an experimental technique for postoperative pain control in scapula fractures.

Anatomic barriers to paraspinal blocks: a cadaver case series

Abstract The paraspinal space is intriguing in nature. There are several needle tip placements described in compact anatomical spaces. This has led to an incertitude regarding the appropriate anatomic locations for needle tip positions. Through our cadaver models we try to resolve the issues surrounding needle tip positions clarifying anatomical spaces and barriers. Further we propose an anatomical classification based on our findings in cadaveric open dissections and cross and sagittal sections.

Quadratus Lumborum block as primary anesthetic technique for colostomy procedure: a case report

Abstract An elderly patient was admitted to the hospital due to an enterovesical fistula and a terminal colostomy was proposed. The patient had a high anesthetic risk and thus a quadratus lumborum block was chosen as the sole anesthetic technique. This block has been described to provide both somatic and visceral analgesia to the abdomen. In fact, it yielded good anesthetic conditions to perform the procedure and allowed the patient to be hemodynamically stable and comfortable throughout the case. The postoperative period was uneventful.

Randomized comparison between transversus abdominis and erector spinae blocks in cesarean section

Introduction: Transversus abdominis plane (TAP) block provides somatic analgesia postoperatively in cesarean sections, however erector spinae plane (ESP) block has shown to provide both somatic and visceral analgesia. Objective: To compare the efficacy of TAP and ESP blocks for pain control after cesarean section under spinal anesthesia. Methods: In a double-blind superiority trial, pregnant patients undergoing cesarean section were randomized into either bilateral TAP or ESP block groups. Primary outcome was total consumption of patient-controlled analgesia (PCA) tramadol in the first 24 hours. Secondary outcomes included time required for first rescue analgesia, post-surgery visual analog score (VAS) for pain, patient satisfaction, and adverse effects. Results: 50 pregnant patients were randomized into TAP and ESP blocks. There was no difference in the amount of PCA tramadol within the first 24 hours between both groups [100mg (63-125) in TAP group vs 75mg (38-100) ESP group]. Pain score at rest and on movement and patient satisfaction were comparable in both groups, with no difference in adverse effects. There was a slight difference in the median time for first rescue analgesia [210min (135-315) in TAP group and 270min (225-405) ESP group] (p=0.03). Conclusions: TAP and ESP blocks provide similar analgesia with comparable consumption of tramadol in the first 24 hours post-cesarean section and no difference in pain scores at rest/on movement.

Introducción: El bloqueo del plano transverso abdominal (TAP - por sus siglas en inglés), ofrece analgesia somática postoperatoria en cesárea; sin embargo, el bloqueo del plano erector de la espina (ESP - por sus siglas en inglés) ha demostrado proporcionar analgesia tanto somática, como visceral. Objetivo: Comparar la eficacia de los bloqueos TAP y ESP para el control del dolor posterior a la cesárea, bajo anestesia raquídea. Métodos: En un estudio de superioridad doble ciego, las pacientes embarazadas sometidas a cesárea se aleatorizaron bien sea al grupo de bloqueo bilateral TAP o ESP? El desenlace principal fue el consumo total de analgesia controlada por la paciente (PCA - por sus siglas en inglés) con tramadol en las primeras 24 horas. Los desenlaces secundarios incluyeron el tiempo transcurrido para la primera analgesia de rescate, el puntaje en la escala visual analógica (EVA) para dolor, la satisfacción del paciente y los efectos adversos. Resultados: 50 pacientes embarazadas se aleatorizaron entre bloqueo TAP y bloqueo ESP. No hubo diferencia en la cantidad de tramadol de la PCA dentro de las primeras 24 horas entre los dos grupos [100mg (63-125) en el grupo TAP vs 75mg (38-100) en el grupo ESP]. El puntaje de dolor en reposo y en movimiento y la satisfacción de la paciente fueron comparables en ambos grupos, sin diferencia en los efectos adversos. Hubo una ligera diferencia en la media de tiempo hasta la primera analgesia de rescate [210 min (135-315) en el grupo de TAP y 270 min (225-405) en el grupo ESP] (p=0,03). Conclusiones: Los bloqueos TAP y ESP ofrecen una analgesia similar, con un consumo comparable de tramadol en las primeras 24 horas posteriores a la cesárea y no hay diferencia en los puntajes de dolor en reposo, o en movimiento.

Endarterectomía carotídea en paciente con estenosis aórtica crítica. Importancia de la anestesia regional y del neuromonitoreo / Carotid endarterectomy in a patient with critical aortic stenosis. Importance of regional anesthesia and transoperative neurological monitoring

Resumen: La estenosis carotídea (EC) ocurre en 13% de los pacientes con estenosis valvular aórtica (EVA). El riesgo de evento vascular cerebral (EVC), en los pacientes con EC significativa sometidos a cirugía valvular cardíaca, puede aumentar hasta 11%. Someter a un paciente con EVA crítica y fracción de eyección del ventrículo izquierdo (FEVI) disminuida a endarterectomía carotídea es todo un reto anestésico, cuyo principal objetivo es evitar la hipotensión y el bajo gasto cardíaco. La anestesia regional es una opción para estos pacientes. Presentamos el caso de un hombre de 70 años con diagnóstico de EC significativa y EVA crítica con disfunción ventricular izquierda, al que se realizó endarterectomía carotídea con bloqueo del plexo cervical superficial por alto riesgo de colapso circulatorio. Dicha estrategia anestésica permitió mantener al paciente despierto durante la cirugía, al valorar continuamente su estado neurológico. Asimismo, se documentaron los cambios transoperatorios en el NIRS (Near-infrared spectroscopy) cerebral y Doppler transcraneal (DTC), los cuales se correlacionaron con el estado clínico del paciente. En un segundo tiempo se hizo cambio valvular aórtico sin complicaciones. En este caso destaca la importancia de la anestesia regional y el monitoreo neurológico con Doppler transcraneal, en pacientes sometidos a endarterectomía carotídea con alto riesgo quirúrgico por EVA crítica.

Abstract: Carotid stenosis occurs in 13% of patients with aortic valve stenosis. The risk of stroke in patients with significant carotid stenosis undergoing heart valve surgery may increase to 11%. Proposing a patient with critical aortic valve stenosis and left ventricular dysfunction to carotid endarterectomy is an anesthetic challenge, where the objective is to avoid hypotension and low cardiac output. Regional anesthesia is an option for these patients. Due to the high incidence of intraoperative stroke during carotid endarterectomy, continuous neurological monitoring is of relevance. We present the case of a 70-year-old man diagnosed with significant carotid stenosis and critical aortic valve stenosis and left ventricular dysfunction who underwent carotid endarterectomy with superficial cervical plexus block due to a high risk of circulatory collapse. In addition, this anesthetic strategy made it possible to keep the patient awake during surgery, and to continuously assess their neurological status. Likewise, transoperative changes in brain NIRS and transcranial Doppler were documented, which correlated with the patient's clinical status. In a second time, aortic valve replacement was performed without complications. This case highlights the importance of regional anesthesia and neurological monitoring in patients undergoing carotid endarterectomy with high surgical risk due to critical aortic valve stenosis.

Identification and economic burden of main adverse events of nerve injuries caused by regional anesthesia: a systematic review

Abstract Background and objectives: Anesthesiologists and hospitals are increasingly confronted with costs associated with the complications of Peripheral Nerve Blocks (PNB) procedures. The objective of our study was to identify the incidence of the main adverse events associated with regional anesthesia, particularly during anesthetic PNB, and to evaluate the associated healthcare and social costs. Methods: According to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we conducted a systematic search on EMBASE and PubMed with the following search strategy: (‟regional anesthesia" OR ‟nerve block") AND (‟complications" OR ‟nerve lesion" OR ‟nerve damage" OR ‟nerve injury"). Studies on patients undergoing a regional anesthesia procedure other than spinal or epidural were included. Targeted data of the selected studies were extracted and further analyzed. Results: Literature search revealed 487 articles, 21 of which met the criteria to be included in our analysis. Ten of them were included in the qualitative and 11 articles in the quantitative synthesis. The analysis of costs included data from four studies and 2,034 claims over 51,242 cases. The median claim consisted in 39,524 dollars in the United States and 22,750 pounds in the United Kingdom. The analysis of incidence included data from seven studies involving 424,169 patients with an overall estimated incidence of 137/10,000. Conclusion: Despite limitations, we proposed a simple model of cost calculation. We found that, despite the relatively low incidence of adverse events following PNB, their associated costs were relevant and should be carefully considered by healthcare managers and decision makers.

Ultrasound-guided continuous costoclavicular block through retrograde stimulating catheter technique for postoperative analgesia in shoulder surgery: a case series

Abstract In five patient undergoing surgery for proximal humerus fracture we investigated into postoperative analgesia provided by continuous costoclavicular block using continuous stimulating catheter. The postoperative pain scores were less than 4 in all patients except in two patients who required intravenous tramadol 50 mg as a rescue analgesic. The radiocontrast dye study executed in two patients revealed contiguous contrast spread through the brachial plexus sheath with the catheter tip in the interscalene space. We propose that a continuous costoclavicular block with a retrograde stimulating catheter is a feasible alternative regional anesthesia technique for postoperative analgesia in shoulder surgery.

Pudendal nerve block for circumcision of pediatric patient with Pierre Robin Sequence: case report

Abstract Pierre Robin Sequence (PRS) is a congenital condition characterized by micrognathia, glossoptosis, and cleft palate that presents with airway obstruction and developmental delay with or without other congenital anomalies. These patients' anesthesia management is challenging because of difficult ventilation and intubation. Regional anesthesia methods should be considered for these patients on a case-by-case basis. This report presents primary use of regional anesthesia for circumcision of a 9-year-old boy with PRS.

Bloqueo interescalénico en el contexto de la recuperación acelerada para artroscopía de hombro: serie de casos / Interscalene block in the context of enhanced recovery for shoulder: A case series

Introducción La aplicación de la recuperación acelerada en cirugía de hombro no ha tenido una aceptación tan favorable. Por ello, el objetivo de este estudio fue presentar y describir el uso de bloqueo interescalénico para favorecer la recuperación acelerada en una serie de pacientes sometidos a cirugía artroscopica de hombro. Métodos Se incluyeron 35 pacientes sometidos a cirugía artroscópica de hombro, en quienes se administró bloqueo interescalénico y sedación. Posteriormente se evaluó la intensidad del dolor, náuseas, vómito, disnea, presencia de síndrome de Horner, visión borrosa, ronquera, tiempo transcurrido hasta el alta, reingresos no planeados, satisfacción del paciente y cumplimiento de los criterios de alta hospitalaria en las primeras 12 horas siguiendo los criterios de una recuperación acelerada. Resultados En total, 27 pacientes (77,1%) tuvieron clasificación de la (ASA) I y 8 pacientes (22,9%) ASA II. Además, 97,1% fueron reparaciones de manguito rotador. Previo al alta, dos pacientes (5,7%) presentaron náuseas. Al momento del alta ningún paciente presentó disnea o visión borrosa, dos pacientes (5,7%) presentaron ronquera y la mediana de intensidad del dolor fue de 1,0 (0,0 a 7,0). Entre las 24 y 48 horas solo un (2,8%) paciente presentó náuseas y la mediana de intensidad del dolor fue de 1,0 (0,0 a 8,0). Todos los pacientes se mostraron satisfechos con disposición a repetir la experiencia. El 100% de pacientes cumplió los criterios médicos de alta a las 12 horas y 30 pacientes (85,7%) se dieron de alta el mismo día. La estancia fue de 12 (11,5 a 12,5) horas y ningún paciente reingresó. Conclusión En pacientes seleccionados, con un equipo quirúrgico-anestésico comprometido, capacitado y con experiencia, hay una alta posibilidad de que el bloqueo interescalénico favorezca la realización de programas de recuperación acelerada en cirugía artroscópica de hombro.

Introduction The application of enhanced recovery in shoulder surgery has not had such a favorable acceptance, therefore, the objective of this study was to present and describe the use of interscalene block to promote enhanced recovery in a series of patients undergoing shoulder arthroscopic surgery. Methods Thirty-five patients undergoing arthroscopic shoulder surgery were included, in whom interscalene blockade and sedation were administered. Subsequently, pain intensity, nausea, vomiting, dyspnea, presence of Horner's syndrome, blurred vision, hoarseness, time elapsed to discharge, unplanned readmissions, patient satisfaction, and compliance with hospital discharge criteria in the first 12 weeks were evaluated, hours following the criteria of an enhanced recovery. Results 27 patients (77,1%) had ASA I and 8 patients (22,8%) ASA II, 97,1% were rotator cuff repairs. Before discharge, two patients (5.7%) had nausea. At discharge, no patient had dyspnea or blurred vision, two patients (5.7%) developed hoarseness, and the median pain intensity was 1.0 (0.0-7.0). Between 24 and 48 hours only one patient (2.8%) presented nausea and the median pain intensity was 1.0 (0.0-8.0). All the patients were satisfied with their willingness to repeat the experience, 100% of the patients met the criteria for medical discharge after 12 hours, 30 patients (85.7%) were discharged the same day, the stay was 12 (11.5 to 12.5) hours, and no patient was readmitted. Conclusion In selected patients with a committed, trained and experienced surgical-anesthetic team, there is a high possibility that the interscalene block will favor the performance of enhanced recovery programs in shoulder arthroscopic surgery.

Bloqueo de plexo braquial con ultrasonido: estudio descriptivo de práctica clínica habitual en 283 niños / Brachial plexus block with ultrasound: a descriptive study of routine clinical practice in 283 children

Resumen: Introducción: en años recientes con el renacimiento de la anestesia regional a causa de los avances técnicos en equipamiento como el ultrasonido, estos han permitido llevar a cabo bloqueos de plexo braquial con varias técnicas de abordaje, alta eficacia de éxito y disminución de complicaciones. Objetivo: conocer la eficacia y seguridad del bloqueo de plexo braquial con ultrasonido, en anestesiólogos con especialidad en anestesia regional. Material y métodos: se realizó el estudio observacional, descriptivo y retrospectivo de la práctica clínica habitual en 283 pacientes de 0 a 15 años, programados para cirugía electiva de ortopedia y traumatología, de extremidad superior (húmero tercio distal, codo, antebrazo y mano), con manejo anestésico: sedación más bloqueo de plexo braquial con ultrasonido abordaje supraclavicular o infraclavicular. Durante dos años, de enero de 2018 a diciembre de 2019. Resultados: los bloqueos fueron realizados por 11 anestesiólogos con especialidad en anestesia regional. Se evaluó la eficacia con 99.65% de éxito. En cuanto a la seguridad no se registraron complicaciones. Conclusiones: el uso de ultrasonido en bloqueo de plexo braquial con abordaje supraclavicular e infraclavicular es una técnica con éxito alto y sin complicaciones; sin embargo, es necesario tener capacitación y experiencia.

Abstract: Introduction: in recent years with the revival of regional anesthesia due to technical advances in equipment such as ultrasound, have allowed to carry out brachial plexus blocks with several approach techniques with high efficiency of success and reduction of complications. Objective: to know the efficacy and safety of brachial plexus block with ultrasound, in anesthesiologists with a specialty in regional anesthesia. Material and methods: the observational, descriptive, retrospective study of the usual clinical practice was carried out in 283 patients from 0 to 15 years old, scheduled for elective orthopedic surgery and traumatology, of the upper extremity (distal third humerus, elbow, forearm and hand), with anesthetic management: sedation plus brachial plexus block with ultrasound supraclavicular or infraclavicular approach. For two years from January 2018 to December 2019. Results: the blocks were performed by 11 anesthesiologists specializing in regional anesthesia. Efficacy was evaluated with 99.65% success. In terms of safety, there were no complications. Conclusions: the use of ultrasound in brachial plexus block with supraclavicular and infraclavicular approach is a technique with high success and without complications however it is necessary to have training and experience.

Debridement of axillary necrotizing fasciitis under anesthetic blocks of the serratus plane and supraclavicular brachial plexus: a case report

Abstract The regional techniques for axillary analgesia are well established. However, few studies have investigated surgical anesthesia. In this report, extensive debridement of axillary necrotizing fasciitis, including the posteromedial region of the right arm, performed under exclusive regional anesthesia in a patient with probable difficult airway is described. The procedure was accomplished under a Serratus Plane Block (SPB) and supraclavicular brachial plexus block, guided by ultrasound, and with venous sedation. We observed satisfactory anesthesia 15 minutes after the intervention, efficient intraoperative pain control and within the following 24 hours. Surgical axilla anesthesia is feasible with the described blocks.

Circumpsoas block - an anterior myofascial plane block for lumbar plexus elements: case report

Abstract In an attempt to improvise the analgesia in patients with femoral fractures, we aimed at depositing local anesthetic deep to anterior psoas fascia (APf) under ultrasound (US) guidance to block lumbar plexus elements which emerge lateral, anterior, and medial to the psoas major muscle. We termed this as circumpsoas block (CPB). Clinical and computed tomography contrast studies revealed that a continuous CPB infusion with a catheter provided a reliable block of the lumbar plexus elements. No adverse were events noted. We conclude that US guided CPB is a reliable technique for managing postoperative pain after surgery of femur fractures.

Efficacy of modified thoracoabdominal nerve block through perichondrial approach following laparoscopic inguinal hernia repair surgery: a randomized controlled trial

Abstract Background: Modified thoracoabdominal nerve block through perichondrial approach is a novel fascial plane block and provides abdominal analgesia by blocking thoracoabdominal nerves. Our primary aim was to evaluate the efficacy of M-TAPA on quality of recovery and pain scores in patients who underwent laparoscopic inguinal hernia repair surgery (Trans Abdominal Pre-Peritoneal approach ‒ TAPP). Methods: Patients with American Society of Anesthesiologists (ASA) physical status I-II aged between 18 and 65 years scheduled for elective TAPP under general anesthesia were enrolled in the study. After intubation, the patients were randomized into two groups: M: M-TAPA group (n = 30) and the control group (n = 30). M-TAPA was performed with total 40 ml 0.25% bupivacaine in the M group. Surgical infiltration was performed in the control group. The primary outcome of the study was the global quality of recovery score, the secondary outcomes were pain scores, rescue analgesic demands, and adverse effects during the 24-h postoperative period. Results: The global quality of recovery scores at 24 h were significantly higher in the M group (p < 0.001). There was a reduction in the median static and dynamic NRS for the first postoperative 8 h in the M group compared to the control group (p < 0.001). The need for rescue analgesia was significantly lower in the M group compared to the control group (13 patients vs. 24 respectively, p < 0.001). The incidence of side effects was significantly higher in the control group (p < 0.001). Conclusion: In our study, M-TAPA increased patient recovery scores, and provided pain relief in patients who underwent TAPP. Register Number: NCT05199922.

Bilateral continuous erector spinae plane block for cardiac surgery: case series / Bloqueo bilateral continúo del plano erector de la espina para cirugía cardiaca: serie de casos

Abstract Multimodal analgesia in cardiac surgery sternotomy includes bilateral continuous erector spinae plane block (BC-ESPB). However, the effectiveness of the local anesthetic regimens is still uncertain. The purpose of this study was to assess pain control achieved with a multimodal analgesia regimen including BC-ESPB at the level of T5 with PCA with a 0.125 % bupivacaine infusion and rescue boluses. This is a descriptive case series study which recruited 11 adult patients undergoing cardiac surgery through sternotomy in whom multimodal analgesia including BC-ESPB was used, between February and April 2021, at a fourth level institution. All patients reported pain according to the numeric rating scale (NRS) ≤ 3 both at rest and in motion, at extubation and then 4 and 12 hours after surgery. After 24 hours the pain was NRS ≤ 3 in 100 % of the patients at rest and in 63.6 % in motion. At 48 h 81 % of the patients reported pain NRS ≤ 3 at rest and in motion. At 72h all patients reported pain NRS ≤ 3 at rest and 82 % in motion. The average intraoperative use of fentanyl was 2.35 µg/kg and postoperative hydromorphone was 5.3, 4.1 and 3.3 mg at 24, 48 and 72 hours, respectively. Hence, bilateral ESP block in continuous infusion plus rescue boluses allows for proper control of acute intra and post-operative pain.

Resumen En cirugía cardiaca mediante esternotomía, la analgesia multimodal incluye el bloqueo bilateral continuo del plano erector de la espina (BBC-ESP). Sin embargo, existe incertidumbre sobre la efectividad de los esquemas de dosificación del anestésico local. Se busca evaluar el control del dolor proporcionado por un esquema de analgesia multimodal que incluye el BBC-ESP a la altura de T5 con ACP de bupivacaína 0,125 % en infusión y bolos de rescate. Se trata de un estudio descriptivo, serie de casos. Se reclutaron 11 pacientes adultos sometidos a cirugía cardiaca mediante esternotomía en quienes se usó analgesia multimodal que incluía BBC-ESP entre febrero y abril del 2021, en una institución de cuarto nivel. Todos los pacientes refirieron dolor, según la escala numérica (EN) ≤ 3 tanto en reposo como en movimiento, a la extubación, a las 4 y a las 12 horas. A las 24 horas el dolor fue EN ≤ 3 en el 100 % de los pacientes en reposo y en el 63,6 % en movimiento. A las 48 h el 81 % de los pacientes refirieron dolor EN ≤ 3 en reposo y en movimiento. A las 72 h todos los pacientes presentaron dolor EN ≤ 3 en reposo y 82 % en movimiento. El consumo intraoperatorio promedio de fentanilo fue de 2,35 ug/kg y de hidromorfona posoperatoria de 5,3, 4,1 y 3,3 mg a las 24, 48 y 72 horas. Así, el BBC-ESP en infusión continua más bolos de rescate permiten el control del dolor agudo intra y posoperatorio.

Anesthesia or analgesia? New block for shoulder surgery: pericapsular nerve group block

Abstract Interscalene brachial plexus (ISB) block is considered the analgesic technique of choice for shoulder surgery. However, the hemidiaphragmatic paresis that may occur after the block has led to the search for an alternative to the ISB block. In this case report, the pericapsular nerve group (PENG) block was performed for both surgical anesthesia and postoperative analgesia in two patients who underwent shoulder surgery. It is suggested that the PENG block can be safely applied for analgesia and can be part of surgical anesthesia, but alone is not sufficient for anesthesia. The block of this area did not cause motor block or pulmonary complications, nor result in muscle laxity, blocking only the shoulder and the upper third of the humerus. It was demonstrated that the PENG block may be safely applied for both partial anesthesia and analgesia in selected shoulder surgery cases.

Is Continuous Erector Spinae Plane Block (ESPB) Better than Continuous Serratus Anterior Plane Block (SAPB) for Mitral Valve Surgery via Mini?Thoracotomy? Results from a Prospective Observational Study

Aims:Chest wall blocks are effective alternatives for postoperative pain control inmitral valve surgery in rightmini?thoracotomy (mini?MVS).We compared the efficacy of Serratus Anterior plane block (SAPB) and Erector Spinae plane block (ESPB) on postoperative pain relief aftermini?MVS. Settings and Design: It is a prospective, observational study. Material and Methods: A total of 85 consecutive patients undergoing continuous SAPB and continuous ESPB for mini?MVS from March 2019 to October 2020 were included. The primary outcome was the assessment of postoperative pain evaluated as absolute value of NRS at 12, 24 and 48 h. Secondary outcomes were assessment of salvage analgesia (both opioids and NSAIDs), incidence of mild adverse effects (i.e. nausea, vomiting, and incorrect catheter placement) and timing of postoperative course (ICU and hospital length of stay, duration of mechanical ventilation, ventilator?free days). Results: The median NRS was 0.00 (0.00–3.00) at 12 h and 0.00 (0.00–2.00) at 24 and 48 h. No significant differences were observed between groups. Postoperative morphine consumption in the first 24 h was similar in both groups (P = 0.76), whereas between 24 and 48 h was significantly less in the ESPB group compared with SAPB group, P = 0.013. NSAIDs median consumption and Metoclopramide consumption were significantly lower in the ESPB group compared to SAPB group (P = 0.002 and P = 0.048, respectively). Conclusions: ESPB, even more than SAPB, appears to be a feasible and effective strategy for the management of postoperative pain, allowing good quality analgesia with low consumption of opioids, NSAIDs and antiemetic drugs.

Erector Spinae Plane Block in pediatric cancer pain: Case report / Bloqueo del plano erector espinal en dolor oncológico pediátrico: reporte de caso

Abstract The advent of the erector spinae plane block brought a new therapeutic option in a multimodal analgesia strategy, as evidenced in this case, which describes a five-year old pre-school patient who presented with severe abdominal cancer pain, secondary to an abdominal neuroblastoma, with partial high-dose opioid response, undergoing bilateral erector spinal plane block. The technique used did not give rise to complications and proved to be effective in blocking pain and reducing the opioid dosage 36 hours after the procedure. The paper discusses the variables involved in the administration mode (continuous infusion vs. bolus) and the benefit for optimal analgesia in the pediatric oncology setting.

Resumen Con la aparición del bloqueo del plano erector espinal surgen nuevas alternativas terapéuticas dentro de una estrategia de analgesia multimodal, tal como se puede apreciar en este caso, en el cual se describe un paciente preescolar de cinco años, quien cursó con dolor abdominal oncológico intenso secundario a neuroblastoma abdominal con respuesta parcial a opioides en dosis altas y en el que se empleó el bloqueo mencionado aplicado bilateralmente. La técnica empleada no generó complicaciones y demostró ser efectiva al permitir el control del dolor y la disminución de las dosis de opioides en las 36 horas posteriores a su colocación. Se plantea la discusión de variables con relación a la forma de administración (infusión continua vs. bolo) y la utilidad en la optimización analgésica en el contexto oncológico pediátrico.

Estrategias para la prevención de la parálisis hemidiafragmática en el bloqueo de plexo braquial interescalénico. Revisión sistemática / Prevention strategies for hemidiaphragmatic paralysis in interscalene brachial plexus block. Systematic review

Resumen: Introducción: La cirugía de hombro se asocia con dolor postoperatorio severo; el bloqueo del plexo braquial interescalénico es la técnica anestésica de elección. No obstante, este procedimiento no está exento de riesgos, como el desarrollo de parálisis hemidiafragmática, limitando su utilidad en pacientes con alta probabilidad de complicaciones respiratorias. Objetivos: Analizar las diferentes estrategias de prevención de la parálisis hemidiafragmática en el bloqueo de plexo braquial interescalénico, así como describir los principios que la rigen, en el contexto de la anestesia regional para la cirugía de hombro. Material y métodos: Se buscó bibliografía utilizando bases de datos médicas (CONRICyT, PubMed, Medline, OVID, Cochrane), con las palabras clave: cirugía de hombro, anestesia regional, bloqueo interescalénico, bloqueo supraclavicular, nervio frénico, parálisis hemidiafragmática, complicaciones y prevención. Discusión y conclusiones: El bloqueo interescalénico es valioso para proporcionar anestesia y analgesia en cirugía de hombro, sin embargo, sus beneficios deben sopesarse frente a los riesgos. Se ha evidenciado disminuir la parálisis del nervio frénico: utilizando guía ecográfica, disminuyendo el volumen y la concentración del anestésico local, modificando el sitio de inyección y utilizando una técnica anestésica regional completamente diferente. Resulta imperativo incorporar estos nuevos conocimientos para hacer de esta técnica una práctica segura y efectiva.

Abstract: Introduction: Shoulder surgery is associated with severe postoperative pain and interscalene brachial plexus block is the anesthetic technique of choice. However, this procedure is not without risks, such as the development of hemidiaphragmatic paralysis, limiting its usefulness in patients with a high probability of respiratory complications. Objectives: To analyze the different prevention strategies for hemidiaphragmatic paralysis in interscalene brachial plexus block, as well as to describe the principles that govern it, in the context of regional anesthesia for shoulder surgery. Material and methods: Bibliography was searched using medical databases (CONRICyT, PubMed, Medline, OVID, Cochrane), introducing key words: shoulder surgery, regional anesthesia, interscalene block, supraclavicular block, phrenic nerve, hemidiaphragmatic paralysis, complications and prevention. Discussion and conclusions: Interscalene block is valuable for providing anesthesia and analgesia in shoulder surgery, however, its benefits must be weighed against the risks. A reduction in phrenic nerve paralysis has been shown: using ultrasound guidance, reducing the volume and concentration of the local anesthetic, modifying the injection site and using a completely different regional anesthetic technique. It is imperative to incorporate this new knowledge to make this technique a safe and effective practice.

A guideline for femoral nerve block with the age-related formulas obtained from the distances between the femoral nerve and surface anatomical landmarks in fetal cadavers / Una guía para el bloqueo del nervio femoral con fórmulas relacionadas con la edad obtenidas a partir de las distancias entre el nervio femoral y los puntos de referencia anatómicos superficiales en cadáveres fetales

SUMMARY: The femoral nerve (FN) is used for nerve block in many surgeries and provides effective postoperative analgesics in the pediatric population. However, although there are sufficient anatomical maps and signs for femoral nerve blockades in adults, there is not enough information for the pediatric group. Therefore, in our study, we tried to determine an effective area for safe block blocking with the help of bone structures in order to perform effective blockade in younger age groups. The study was conducted on 60 lower limbs. The exit point of the FN was identified. The measurements were examined in two regards, namely the level of the FN and the relationship of the FN with the surrounding structures. For the right and left sides, all the parameters showed increases with age. A significant relationship was found between all the parameters of the fetal cadavers (p<0.01). It was determined that there was a strong correlation between all parameters related to FN and surrounding bone structures (p<0.01). Sex was not found to be significantly related to the other parameters (p<0.05 Among all the fetal cadavers, high-level division was observed in six limbs (10 %), mid-level division in 33 limbs (55 %), and lower-level division in 21 limbs (35 %). Gestational age-based regression equations from my study showed that the site of the blockage could be effectively performed with the aid of palpable bone structures from the outside without the need for technical assistance.

RESUMEN: El nervio femoral (NF) se utiliza para el bloqueo nervioso en muchas cirugías y proporciona analgesia posoperatoria eficaz en la población pediátrica. Sin embargo, aunque existen suficientes mapas anatómicos y signos de bloqueo del NF en los individuos adultos, no hay suficiente información para el grupo pediátrico. Se intentó determinar una área exacta para el bloqueo del NF junto con estructuras óseas para realizar un bloqueo efectivo. El estudio se realizó en 60 miembros inferiores. Se identificó el punto de salida del NF. Las mediciones se realizaron en dos puntos, nivel del NF y la relación de éste con las estructuras circundantes. Para los lados derecho e izquierdo, todos los parámetros mostraron incrementos con la edad. Se encontró una relación significativa entre todos los parámetros de los cadáveres fetales (p<0,01). Se determinó que existía una fuerte correlación entre todos los parámetros relacionados con el NF y las estructuras óseas circundantes (p <0,01). No se encontró que el sexo se relacionara significativamente con los otros parámetros (p<0,05 Entre todos los cadáveres fetales se observó un alto nivel de división en seis miembros (10 %), una división de nivel medio en 33 miembros (55 %) y división de nivel inferior en 21 miembros (35 %). Las ecuaciones de regresión basadas en la edad gestacional del estudio mostraron que el sitio de bloqueo se podría realizar eficazmente con la ayuda de estructuras óseas palpables desde el exterior sin necesidad de asistencia técnica.

Bibliographic review Factors influencing patient's anesthetic satisfaction

Objective: Collect scientific evidence on the factors that influence the anesthetic satisfaction of patients, through a theoretical bibliographic review. Obtain an updated compendium of studies on user satisfaction, the instruments used to measure it and the influencing factors, which will be of great use to anesthesiology services to establish the actions that contribute to increasing satisfaction and the quality of the service provided. Materials and Methods: Theoretical-descriptive review. Scientific articles were used as primary sources of information, the analysis material was collected from the following databases (secondary sources): Pubmed, Scielo, Wiley Online Library, Biomed Central. Articles on satisfaction of surgical patients in anesthesiology services were included, from 2016 to 2021. Results: 41 articles were identified, including only 20 studies. Anesthetic satisfaction in the researches consulted was high. When analyzing the factors related to satisfaction, most of the researches consulted highlight that they are various and depend on the healthcare professional, the patient and the healthcare institution. The most important factors are the side effects that patients experience after anesthesia, such as nausea and vomiting. Validated instruments such as QoR- 15, EVAN-G, LA-EQ, PSQ-2 or PQRS and others created for this purpose were used. Conclusion: Patient satisfaction with anesthesia is an aspect of utmost importance in the context of the quality of anesthesiology services