Bloqueos Nerviosos. Bases Anatómicas del Dolor Somático Abdomino-Pélvico / Nerve Blocks. Anatomy of the Somatic Innervation of the Abdomino-Pelvic Cavity

El dolor abdominal es una de las sintomatologías que afectan con frecuencia la cavidad abdomino-pélvica. Dicha cavidad posee una inervación somática en la que intervienen del séptimo a doceavo nervios intercostales, ramos colaterales y terminales del plexo lumbar y el nervio pudendo; siendo objetivo de este trabajo la descripción anatómica del dolor abdominopélvico a través del plexo lumbar, nervios intercostales y nervio pudendo, sus diferentes patrones y variaciones de conformación, y las implicancias de éstas últimas en las distintas maniobras clínico-quirúrgicas. Se realizó un estudio descriptivo, observacional y morfométrico de la inervación somática de la cavidad abdomino-pélvica, en 50 preparaciones cadavéricas, fijadas en solución de formaldehído, de la Tercera Cátedra de Anatomía, Facultad de Medicina, Universidad de Buenos Aires, entre Agosto/2017-Diciembre/2019. La descripción clásica del plexo lumbar se encontró en 35 casos; la presencia del nervio femoral accesorio en ningún caso; así como también la ausencia del nervio iliohipogástrico en ningún caso; el nervio obturador accesorio se halló en 2 casos; el nervio genitofemoral dividiéndose dentro de la masa muscular del psoas mayor en 6 casos; el nervio cutáneo femoral lateral emergiendo únicamente de la segunda raíz lumbar en 6 casos y por último se encontró la presencia de un ramo del nervio obturador uniéndose al tronco lumbosacro en un caso. Los nervios intercostales y el nervio pudendo presentaron una disposición clásica en todos los casos analizados. Es esencial un adecuado conocimiento y descripción del plexo lumbar, nervios intercostales y nervio pudendo para un adecuado abordaje de la cavidad abdomino-pélvica en los bloqueos nerviosos.

SUMMARY: Abdominal pain is one of the symptoms that affect the abdominal-pelvic cavity. The abdominal-pelvic cavity has a somatic innervation involving the seventh to twelfth intercostal nerves, collateral and terminal branches of the lumbar plexus and the pudendal nerve. The objective of this work is the description of the lumbar plexus, intercostal nerves and pudendal nerve, its different patterns and structure variations, as well as its implications during pain management in patients. A descriptive, observational, and morphometric study of patterns and structure variations of the lumbar plexus, intercostal nerves and pudendal nerve was conducted in 50 formalin-fixed cadaveric dissections of the Third Chair of Anatomy at the School of Medicine in the Universidad de Buenos Aires from August 2017 to December/2019. The standard description of the lumbar plexus was found in 35 cases; accessory femoral nerve was not present in any of the cases; absence of the iliohipogastric nerve was also not found in any case, while the accessory obturating nerve was found in 2 cases; genitofemoral nerve dividing within the muscle mass of psoas in 6 cases; lateral femoral cutaneous nerve emerging only from the second lumbar root in 6 cases and finally, presence of a branch of the obturating nerve was found joining the lumbosacral trunk in one case. The pudendal and intercostal nerve patterns presented a typical pathway in all cases. Adequate knowledge and description of the lumbar plexus, intercostal nerves and pudendal nerve is essential for an adequate approach of the abdominal-pelvic cavity in nerve blocks.

Analgesic effect of intercostal nerve block given preventively or at the end of operation in video-assisted thoracic surgery: a randomized clinical trial

Abstract Objective To compare the analgesic effect of intercostal nerve block (INB) with ropivacaine when given preventively or at the end of the operation in patients undergoing video-assisted thoracic surgery (VATS). Methods A total of 50 patients undergoing VATS were randomly divided into two groups. The patients in the preventive analgesia group (PR group) were given INB with ropivacaine before the intrathoracic manipulation combined with patient-controlled analgesia (PCA). The patients in the post-procedural block group (PO group) were administered INB with ropivacaine at the end of the operation combined with PCA. To evaluate the analgesic effect, postoperative pain was assessed with the visual analogue scale (VAS) at rest and Prince Henry Pain Scale (PHPS) scale at 6, 12, 24, 48, and 72 hours after surgery. Results At 6 h and 12 h post-surgery, the VAS at rest and PHPS scores in the PR group were significantly lower than those in the PO group. There were no significant differences in pain scores between two groups at 24, 48, and 72 hours post-surgery. Conclusion In patients undergoing VATS, preventive INB with ropivacaine provided a significantly better analgesic effect in the early postoperative period (at least through 12 h post-surgery) than did INB given at the end of surgery.

Hemotórax mortal secundario a lesiones de arterias intercostales posteriores: Reporte de caso / Fatal hemothorax secondary to posterior intercostal artery injuries: case report

Resumen La lesión de la arteria intercostal es un diagnóstico diferencial poco sospechado. Puede complicarse con una inestabilidad hemodinámica por un hemotórax o un hematoma intratorácico, lo que contribuye a su morbilidad y mortalidad. Se reporta el caso de un paciente de 61 años sin antecedentes patológicos conocidos que acudió al servicio de urgencias por dolor asociado a dificultad respiratoria posterior a un trauma torácico cerrado por caída de 8 días de evolución. Los estudios de imagen revelaron un hemotórax derecho, que ameritó la colocación de un tubo pleural. Se realizó una laparotomía exploratoria sin evidencia de hemorragias ni colecciones intrabdominales, y que posteriormente falleció. En el examen de necropsia se evidenciaron fracturas del noveno y décimo arco costal posterior derecho, asociado a un hematoma. El hemotórax secundario a la lesión de la arteria intercostal es poco frecuente, pero es una emergencia que requiere un diagnóstico asertivo y una intervención oportuna.

Abstract Intercostal artery injury is a poorly suspected differential diagnosis. It can be complicated by hemodynamic instability due to hemothorax or intrathoracic hematoma, which contributes to morbidity and mortality. We report the case of a 61-year-old patient with no pathological history known, who was presented to the emergency department for pain associated with respiratory distress following a blunt chest trauma due to a fall 8 days earlier. The Imaging studies revealed a right hemothorax, which required the placement of a pleural tube. An exploratory laparotomy was performed without evidence of bleeding or intra-abdominal collections, and he subsequently died. The necropsy examination revealed fractures of the ninth and tenth right posterior costal arch, associated with a posterior costal hematoma. The hemothorax that is secondary to an intercostal artery injury is rare, but it is an emergency that requires assertive diagnosis and timely intervention.

Alcoholización de nervios intercostales en el postoperatorio de la cirugía torácica / Alcoholization of the Intercostal Nerves on the Postoperative Period of Thoracic Surgery

Introducción: La cirugía torácica figura entre los procedimientos quirúrgicos más dolorosos. Objetivo: Describir los resultados de la alcoholización de nervios intercostales para analgesia postoperatoria. Métodos: Se realizó un estudio prospectivo, observacional y descriptivo de pacientes tratados quirúrgicamente por afecciones torácicas durante 2018-2019. La muestra incluyó 50 pacientes que cumplieron los criterios de inclusión: operados por el autor principal, mayores de 18 años, acceso intercostal y firmaron el consentimiento informado. Se excluyeron los operados por otros cirujanos o presentaron afectación de la pared torácica. La intensidad del dolor se categorizó en cuatro grupos: leve, moderado, intenso e insoportable, según escala análogo visual. Resultados: Durante la primera noche, predominaron el dolor leve (25/50 por ciento) y moderado (9/18 por ciento). El dolor intenso se presentó en dos (4 por ciento) pacientes y 14(28 por ciento) no necesitaron medicación adicional. Al día siguiente no hubo casos con dolor intenso y solo 9 acusaron dolor moderado. La analgesia peridural solo se utilizó la primera noche y al siguiente día. La tendencia a disminuir el dolor se mantuvo al segundo y tercer día. No hubo casos con dolor insoportable. A largo plazo solo un paciente presentó dolor intenso que necesitó tratamiento con bloqueos. Conclusiones: La alcoholización disminuyó el uso adicional de analgésicos. No hubo complicaciones ni dolor insoportable, por lo que consideramos que este método podría ser una alternativa segura, sobre todo cuando no se dispone de fármacos costosos o personal entrenado en las técnicas modernas de analgesia postoperatoria(AU)

Introduction: Thoracic surgery is among the most painful surgical procedures. Objective: To describe the outcomes of the alcoholization of the intercostal nerves for postoperative analgesia. Methods: A prospective, observational and descriptive study was carried out, with patients treated surgically for thoracic conditions during 2018-2019. The sample included fifty patients who met the inclusion criteria: operated by the corresponding author, older than eighteen years, intercostal access and patients who signed the informed consent. Those operated on by other surgeons or who had chest wall involvement were excluded. Pain intensity was categorized into four groups: mild, moderate, intense and unbearable, according to the analog-visual scale. Results: During the first night, mild (25: 50 percent) and moderate (9: 18 percent) pain predominated. Severe pain occurred in two (4 percent) patients, while 14 (28 percent) did not require any additional medication. The next day, there were no cases of severe pain and only nine reported moderate pain. Epidural analgesia was only used the first night and the next day. The tendency to decrease in pain was maintained on the second and third days. There were no cases with unbearable pain. In the long term, only one patient had severe pain and required, therefore, treatment with blocks. Conclusions: Alcoholization decreased the additional use of analgesics. There were no complications or unbearable pain, a reason why we consider that this method could be a safe alternative, especially when expensive drugs or personnel trained in modern postoperative analgesia techniques are not available(AU)

Comparison of the effect of ultrasound-guided thoracic paravertebral nerve block and intercostal nerve block for video-assisted thoracic surgery under spontaneous-ventilating anesthesia

SUMMARY OBJECTIVE The aim of the current study was to compare the efficacy of two different techniques for blocking chest nerves during video-assisted thoracic surgery (VATS) under spontaneous-ventilating anesthesia. METHODS One hundred patients were recruited in this study and divided into two groups. The first, P group, underwent the TPVB approach; the second, I group, underwent the ICNB approach. Then, the rate of clinical efficacy, duration of the block procedure, and its complications were recorded for comparison of the effect of the two approaches. RESULTS No difference was found in the clinical effect of chest nerve blocks between the two groups. Two patients in the ICNB group were converted to general anesthesia due to severe mediastinal flutter (grade three). The number of patients who had grade one mediastinal flutter in the TPVB group was significantly higher than in the ICNB group. Vascular puncture was detected in four patients in the ICNB group and in one patient in the TPVB group. No other complications were observed. CONCLUSIONS No difference was found regarding the clinical efficacy in the two groups. However, ultrasound-guided TPVB was superior to ultrasound-guided ICBN during VATS for pulmonary lobectomy under spontaneous-ventilating anesthesia. Additionally, vascular puncture should receive more attention.

RESUMO OBJETIVO O objetivo do presente estudo é comparar a eficácia de duas técnicas diferentes para o bloqueio nervoso torácico durante cirurgia torácica vídeo-assistida (CTVA) e anestesia com ventilação espontânea. METODOLOGIA Cem pacientes foram incluídos no estudo e divididos em dois grupos. Em um (grupo P), foi utilizada a abordagem de BPVT e no outro (grupo I), a abordagem de BIC. Então, a taxa de eficácia clínica, duração do procedimento de bloqueio e suas complicações foram registradas para a comparação do efeito das duas abordagens. RESULTADOS Nenhuma diferença foi observada no efeito clínico do bloqueio nervoso torácico entre os dois grupos. Dois pacientes no grupo de BIC foram convertidos para anestesia geral devido a fibrilação mediastinal grave (grau três). O número de pacientes com fibrilação mediastinal de grau um no grupo de BPVT foi significativamente maior do que no grupo de BIC. Perfuração vascular foi detectada em quatro pacientes do grupo de BIC e em um do grupo de BPVT. Não foram observadas outras complicações. CONCLUSÃO Não houve diferença de eficácia clínica entre os dois grupos. No entanto, BPVT guiado por ultrassom foi superior ao BIC guiado por ultrassom durante CTVA para lobectomia pulmonar com anestesia em ventilação espontânea. Além disso, deve-se prestar mais atenção quanto à perfuração vascular.

Abdominal Cutaneous Nerve Entrapment Syndrome, Case Report and Diagnostic Evaluation

Abdominal cutaneous nerve entrapment is a rarely diagnosed condition that leads to intense neuropathic pain in the anterolateral wall of the abdomen. Generally, it is triggered by some factor implied in the increase of the pressure on the nerve in its passage by the abdominal wall. Its most important differential diagnosis is pain of visceral origin. We present a case in which the clinical findings confirmed on ultrasound and other imaging tests established the diagnosis and in which the noninvasive treatment was effective.

Pre-hospital intercostal chest drains in South Africa: A modified Delphi study

Introduction :Trauma is one of the most common causes of death in low- and middle-income countries, with thoracic injury accounting for 20­25% of these deaths worldwide. The current management of a life-threatening pre-hospital pneumothorax is with a needle chest decompression, however, definitive care for a pneumothorax and/or haemothorax is still the insertion of an intercostal chest drain. The aim of this study was to seek expert opinion and consensus on the placement of ICDs in the pre-hospital emergency care setting in South Africa. Methods:A three-round modified Delphi study was undertaken with an expert panel drawn from local emergency care experts consisting of physicians and emergency medical service practitioners. Participants supplied opinion statements in round 1 under headings derived from common emerging themes found in the literature. During round 2 participants used a 9-point Likert scale to rate their consensus on each statement and in round 3 they were able to change their position based on the earlier panel distributions. A consensus percentage of 60% was set within a narrow margin of 'strongly agree' or 'strongly disagree'.Results : A total of 22 experts took part as panel members. There were 123 opinion statements produced from round 1, of which 21 (17%) reached consensus in round 2. At the end of round 3 another four statements reached consensus, bringing the total up to 25 (20%).Conclusio:Definitive care of a life-threating pneumothorax and/or haemothorax must be sought emergently.The insertion of an ICD, under select conditions, may be required in the pre-hospital setting in South Africa

Refractory intercostal neuralgia due to intercostal schwannoma: A case report

Intercostal neuralgia is neuropathic pain that develops in the thorax and abdomen. It usually occurs as a result of injury or inflammation associated with the intercostal nerve triggered by trauma, surgery, or herpes zoster. Primary intercostal neuroma is a rare cause of intercostal neuralgia. A 69-year-old male patient without a history of thoracic trauma or surgery underwent repeated testing and intermittent treatment for refractory pain in the right chest and abdomen for several years. However, the treatment had limited effect. Abdominal computed tomography performed to diagnose recent pain aggravation revealed schwannoma of the 11th intercostal nerve. The patient's pain was relieved following surgical excision of the tumor.

Erector spinae plane block combined with a novel technique for selective brachial plexus block in breast cancer surgery: a case report / 대한마취과학회지

BACKGROUND: The breast is innervated by the intercostal nerves and the brachial plexus. We propose a technique to perform breast surgery without general anesthesia using the erector spinae plane (ESP) block and selective block of four nerves that arise from the brachial plexus innervate the breast and the axilla (SBP block). CASE: A 77-year-old man with breast cancer was scheduled for radical mastectomy and axillary clearance. He had a previous history of myocardial infarction with dilated cardiomyopathy and severely impaired ejection fraction. The surgery was performed under regional anesthesia with combined ESP and SBP block. The patient did not require opioids or other supplemental analgesics intra- or postoperatively and was discharged uneventfully. CONCLUSIONS: SBP is a novel block that selectively blocks branches of the brachial plexus that innervate the breast.

Nonintubated Uniportal Video-Assisted Thoracoscopic Surgery: A Single-Center Experience

BACKGROUND: We report our surgical technique for nonintubated uniportal video-assisted thoracoscopic surgery (VATS) pulmonary resection and early postoperative outcomes at a single center. METHODS: Between January and July 2017, 40 consecutive patients underwent nonintubated uniportal VATS pulmonary resection. Multilevel intercostal nerve block was performed using local anesthesia in all patients, and an intrathoracic vagal blockade was performed in 35 patients (87.5%). RESULTS: Twenty-nine procedures (72.5%) were performed in patients with lung cancer (21 lobectomies, 6 segmentectomies, and 2 wedge resections), and 11 (27.5%) in patients with pulmonary metastases, benign lung disease, or pleural disease. The mean anesthesia time was 166.8 minutes, and the mean operative duration was 125.9 minutes. The mean postoperative chest tube duration was 3.2 days, and the mean hospital stay was 5.8 days. There were 3 conversions (7.5%) to intubation due to intraoperative hypoxemia and 1 conversion (2.5%) to multiportal VATS due to injury of the segmental artery. There were 7 complications (17.5%), including 3 cases of prolonged air leak, 2 cases of chylothorax, 1 case of pleural effusion, and 1 case of pneumonia. There was no in-hospital mortality. CONCLUSION: Nonintubated uniportal VATS appears to be a feasible and valid surgical option, depending on the surgeon’s experience, for appropriately selected patients.

Axillary local anesthetic spread after the thoracic interfacial ultrasound block - a cadaveric and radiological evaluation / Dispersão axilar de anestésico local após bloqueio interfascial torácico guiado por ultrassom - estudo radiológico e em cadáver

Abstract Background Oral opioid analgesics have been used for management of peri- and postoperative analgesia in patients undergoing axillary dissection. The axillary region is a difficult zone to block and does not have a specific regional anesthesia technique published that offers its adequate blockade. Methods After institutional review board approval, anatomic and radiological studies were conducted to determine the deposition and spread of methylene blue and local anesthetic injected respectively into the axilla via the thoracic inter-fascial plane. Magnetic Resonance Imaging studies were then conducted in 15 of 34 patients scheduled for unilateral breast surgery that entailed any of the following: axillary clearance, sentinel node biopsy, axillary node biopsy, or supernumerary breasts, to ascertain the deposition and time course of spread of solution within the thoracic interfascial plane in vivo. Results Radiological and cadaveric studies showed that the injection of local anesthetic and methylene blue via the thoracic inter-fascial plane, using ultrasound guide technique, results in reliable deposition into the axilla. In patients, the injection of the local anesthetic produced a reliable axillary sensory block. This finding was supported by Magnetic Resonance Imaging studies that showed hyper-intense signals in the axillary region. Conclusions These findings define the anatomic characteristics of the thoracic interfascial plane nerve block in the axillary region, and underline the clinical potential of this novel nerve block.

Resumo Justificativa Os analgésicos orais à base de opioides têm sido usados para o manejo da analgesia nos períodos peri e pós-operatório de pacientes submetidos à linfadenectomia axilar. A região axilar é uma zona difícil de bloquear e não há registro de uma técnica de anestesia regional específica que ofereça o seu bloqueio adequado. Métodos Após a aprovação do Conselho de Ética institucional, estudos anatômicos e radiológicos foram feitos para determinar a deposição e disseminação de azul de metileno e anestésico local, respectivamente injetados na axila via plano interfascial torácico. Exames de ressonância magnética foram então feitos em 15 de 34 pacientes programados para cirurgia de mama unilateral que envolveria qualquer um dos seguintes procedimentos: esvaziamento axilar, biópsia de linfonodo sentinela, biópsia de linfonodo axilar ou mamas supranumerárias, para verificar a deposição e o tempo de propagação da solução dentro do plano interfascial torácico in vivo. Resultados Estudos radiológicos e em cadáveres mostraram que a injeção de anestésico local e azul de metileno via plano interfascial torácico com a técnica guiada por ultrassom resulta em deposição confiável na axila. Nos pacientes, a injeção de anestésico local produziu um bloqueio sensitivo axilar confiável. Esse achado foi corroborado por estudos de ressonância magnética que mostraram sinais hiperintensos na região axilar. Conclusões Esses achados definem as características anatômicas do bloqueio da região axilar e destacam o potencial clínico desses novos bloqueios.

Good sensory recovery of the hand in brachial plexus surgery using the intercostobrachial nerve as the donor / Boa recuperação da sensibilidade da mão usando o nervo intercostobraquial como doador em cirurgia do plexo braquial

ABSTRACT Objective: Restoration of the sensitivity to sensory stimuli in complete brachial plexus injury is very important. The objective of our study was to evaluate sensory recovery in brachial plexus surgery using the intercostobrachial nerve (ICBN) as the donor. Methods: Eleven patients underwent sensory reconstruction using the ICBN as a donor to the lateral cord contribution to the median nerve, with a mean follow-up period of 41 months. A protocol evaluation was performed. Results: Four patients perceived the 1-green filament. The 2-blue, 3-purple and 4-red filaments were perceptible in one, two and three patients, respectively. According to Highet's scale, sensation recovered to S3 in two patients, to S2+ in two patients, to S2 in six patients, and S0 in one patient. Conclusion: The procedure using the ICBN as a sensory donor restores good intensity of sensation and shows good results in location of perception in patients with complete brachial plexus avulsion.

RESUMO Objetivo: A restauração da sensibilidade em pacientes com lesão completa do plexo braquial é muito importante. O objetivo desse estudo foi avaliar a recuperação sensitiva em cirurgia do plexo braquial utilizando o nervo intercostobraquial (NICB) como doador. Métodos: Onze pacientes foram submetidos a reconstrução sensitiva usando o NICB como doador para a contribuição lateral do nervo mediano, com tempo de acompanhamento pós-operatório médio de 41 meses. Um protocolo de avaliação foi realizado. Resultados: Quatro pacientes perceberam o filamento 1-verde. Os filamentos 2-azul, 3-roxo e 4-vermelho foram percebidos por um, dois e três pacientes, respectivamente. Um paciente não apresentou recuperação sensitiva. Dois pacientes obtiveram recuperação S3, dois S2+, seis S2 e um S0, pela escala de Highet. Conclusão: O procedimento usando o NICB como doador promove boa intensidade de recuperação sensitiva e bons resultados são obtidos quanto ao local de percepção em pacientes com avulsão completa do plexo braquial.

The intercostobrachial nerve as a sensory donor for hand reinnervation in brachial plexus reconstruction is a feasible technique and may be useful for restoring sensation / O uso do nervo intercostobraquial como doador na restauração cirúrgica da sensibilidade da mão em lesões do plexo braquial é uma técnica anatomicamente viável e pode ser útil para a recuperação sensitiva

ABSTRACT Objective Few donors are available for restoration of sensibility in patients with complete brachial plexus injuries. The objective of our study was to evaluate the anatomical feasibility of using the intercostobrachial nerve (ICBN) as an axon donor to the lateral cord contribution to the median nerve (LCMN). Methods Thirty cadavers were dissected. Data of the ICBN and the LCMN were collected, including diameters, branches and distances. Results The diameters of the ICBN and the LCMN at their point of coaptation were 2.7mm and 3.7mm, respectively. The ICBN originated as a single trunk in 93.3% of the specimens and bifurcated in 73.3%. The distance between the ICBN origin and its point of coaptation to the LCMN was 54mm. All ICBNs had enough extension to reach the LCMN. Conclusion Transfer of the ICBN to the LCMN is anatomically feasible and may be useful for restoring sensation in patients with complete brachial plexus injuries.

RESUMO Objetivo Poucos doadores estão disponíveis para a restauração da sensibilidade em pacientes com lesões completas do plexo braquial (LCPB). O objetivo deste estudo foi avaliar a viabilidade anatômica do uso do nervo intercostobraquial (NICB) como doador de axônios para a contribuição do cordão lateral para o nervo mediano (CLNM). Métodos Trinta cadáveres foram dissecados. Os dados do NICB e do CLNM foram coletados: diâmetros, ramos e distâncias. Resultados Os diâmetros do NICB e da CLNM no ponto de coaptação foram 2,7mm e 3,7mm, respectivamente. O NICB originou-se como um único tronco em 93,3% dos espécimes e bifurcou-se em 73,3%. A distância entre a origem do NICB e seu ponto de coaptação com a CLNM foi de 54mm. Todos os NICBs tiveram extensão suficiente para alcançar a CLNM. Conclusão A transferência do NICB para a CLNM é anatomicamente viável e pode ser útil para restaurar a sensibilidade em pacientes com LCPB.

Thoracic interfascial nerve block for breast surgery in a pregnant woman: a case report / 대한마취과학회지

Regional anesthesia for non-obstetric surgery in parturients is a method to decrease patient and fetal risk during general anesthesia. Thoracic interfascial nerve block can be used as an analgesic technique for surgical procedures of the thorax. The Pecs II block is an interfascial block that targets not only the medial and lateral pectoral nerves, but also the lateral cutaneous branch of the intercostal nerve. Pecto-intercostal fascial block (PIFB) targets the anterior cutaneous branch of the intercostal nerve. The authors successfully performed a modified Pecs II block and PIFB without complications in a parturient who refused general anesthesia for breast surgery.

Thoracic interfascial nerve block for breast surgery in a pregnant woman: a case report / 대한마취과학회지

Regional anesthesia for non-obstetric surgery in parturients is a method to decrease patient and fetal risk during general anesthesia. Thoracic interfascial nerve block can be used as an analgesic technique for surgical procedures of the thorax. The Pecs II block is an interfascial block that targets not only the medial and lateral pectoral nerves, but also the lateral cutaneous branch of the intercostal nerve. Pecto-intercostal fascial block (PIFB) targets the anterior cutaneous branch of the intercostal nerve. The authors successfully performed a modified Pecs II block and PIFB without complications in a parturient who refused general anesthesia for breast surgery.

Injerto costal en rinoplastia. Recaudos anatómicos para la recolección de cartílago costal / Costal graft in rhinoplasty. Anatomical collections for thecollection of costal cartilage / Enxerto costal na rinoplastia. Coleções anatômicas para a cartilagem colheitacostela

Introducción: la finalidad es ponderar el conocimiento anatómico indispensable de la pared torácica para la recolección segura de cartílago costal en rinoplastia. Materiales y métodos: Se dividió en dos fases. Esta presentación corresponde a la Fase I, de tipo descriptiva observacional. La Fase II (actualmente en curso) tiene un diseño prospectivo y experimental para una futura presentación. Primera instancia: recolección de información bibliográfica, de no más de 5 años de antigüedad en bases de datos médicos y textos específicos. Segunda instancia: representación del acto quirúrgico en 3 especímenes cadavéricos humanos. En cada espécimen se realizaron 4 abordajes (2 submamarios y 2 subcostales inferiores) se hizo hincapié en la descripción de aquellas estructuras anatómicas importantes para respetar en el abordaje de la pared torácica. Resultados: Fue posible recrear las diferentes técnicas de abordaje de la pared costal. Se pudo constatar que la ubicación del paquete vasculonervioso dentro del surco costal fue constante inter especímenes e intra espécimen. La relación entre el pericondrio interno, la fascia endotorácica y la hoja parietal de la pleura resultó ser un sistema fibroadhesivo complejo y variable. Coincidimos con la bibliografía acerca de que la técnica se dificulta cuando se realiza la recolección a nivel costal más proximal. Conclusiones: Creemos que el conocimiento de la anatomía torácica es indispensable para realizar una correcta técnica de disección y posterior recolección de cartílago costal; esto disminuiría las complicaciones y la morbilidad en el sitio dador. El neumotórax y el dolor neuropático provienen del daño de estructuras anatómicas constantes.

Introduction: the purpose is to weight the anatomical knowl edge essential to the chestwall for the safe collection of costal cartilage in rhinoplasty. Materials and methods: It is divided in to two phases. This presentation corresponds to Phase I, of an observational descriptive type. Phase II (currently underway) has a prospective and experimental design for future presentation. First instance: collection of bibliographic information, not more than 5 years old in medical databases and specific texts. Second instance: representation of the surgical act in 3 human cadaveric specimens. In each specimen, 4 approaches (2 sub mamarios and 2 lower subcostals) were performed, emphasizing the description of those anatomical structures important to respect in the thoracic wall approach. Results: It was possible to recreate the different techniques of approaching the costal wall. It was observed that the location of the vasculo nervioso package with in the costal groove was constant between specimens and intra specimen. The relationship between the internal perichondrium, the endothoracic fascia and the parietal leaf of the pleura turned out to be a complex and variable fibro adhesive system. We agree with the bibliography that the technique is difficult twhen the collection is carried out at the most proximal costal level. Conclusions: We believe that knowl edge of the thoracic anatomy is essential to perform a correct technique of dissection and later collection of costal cartilage, this would reduce complications and morbidity in the donor site. Pneumothorax and neuropathic painarise from the damage of constant anatomical structures.

Introdução: o objetivo é avaliar o conhecimento anatômico essencial da parede torácica para a recolha de cartilagem costal em rinoplastia. Materiais e métodos: dividido em duas fases. Esta apresentação corresponde à Fase I, observacional descritivo. Fase II (em curso) tem um desenho prospectivo e experimental para uma apresentação futuro. Primeira instância: recolha de informação bibliográfica, não mais de 5 anos de idade em bancos de dados médicos e textos específicos. Segunda instância: a representação da cirurgia em 3 espécimes de cadá- veres humanos. Em cada espécime 4 abordagens (2 submamária e 2 inferior subcostal) enfatizou a descrição dessas estruturas anatômicas importantes a respeitar no tratamento da parede torácica foram realizadas. Resultados: Foi possível recriar as diferentes técnicas de abordagem parede torácica. Verificou-se que a localização do feixe neurovascular no sulco costal foi constante espécimes inter e intra espécime. A relação entre o pericôndrio interno, a fáscia e a folha intratorácica pleura parietal provou ser um sistema de fibro adhesive complexa e variável. Estamos de acordó com a literatura que a técnica é difícil quando a coleção é composta nível costal mais proximal. Conclusão: Acreditamos que o conhecimento da anatomia torácica é essencial para uma correta técnica de dissecção e subsequenterecolha de cartilagem costal, este iria diminuir as complicações e morbidade no sítiodoador. Pneumotórax e dorneuropática vem de danos causados por estrutura sanatômicas constantes.

A Bilateral Double Sternalis Muscle in a Korean Cadaver / 체질인류학회지

Although the sternalis muscle has been well known to anatomists, it is quite unfamiliar to clinicians. During routine educational dissection, we came across a well-defined bilateral double sternalis muscle innervated by the intercostal nerve, respectively. The right sternalis muscle 1) became tendinous to insert into the sternum and 2) crossed midline and then intermingled with the left pectoralis major muscle, which could be classified into a double with single cross based on Snosek et al.'s criteria. The left sternalis muscle was composed of two bellies, which were combined at the midway, and became tendinous to insert into the contralateral manubrium, which could be classified into a bicipital diverging with double cross based on Snosek et al.'s criteria. The detailed knowledge on the sternalisis is important for clinicians as well as for anatomists, since the clinical importance of the sternalis muscle has been highlighted in recent years.