A Case Report of Endovascular Repair by a Pull-through Technique for Iatrogenic Right Subclavian Artery Injury / 日本心臓血管外科学会雑誌

A 52-year-old man presented himself to his family doctor for uremia associated with prerenal acute renal failure. A 12 Fr vascular access catheter was inserted via the right internal jugular vein for emergency dialysis. A contrast-enhanced computed tomography (CT) scan revealed that the catheter had penetrated the right internal jugular vein, perforated the right subclavian artery, and reached the ascending aorta. Under general anesthesia, we completed the procedure with a pull-through technique between the bilateral brachial arteries. A vascular occlusion balloon was inserted from the left brachial artery and a GORE VIABAHN stent graft was inserted from the right brachial artery. The postoperative course was good and he has been free from hemorrhagic episodes. He was transferred to the referring hospital on postoperative day 2.

Risk of Neurovascular Injury during Screw Fixation of Tibial Tubercle Fractures in Pediatric and Adolescent Patients / Risco de lesão neurovascular durante a fixação com parafuso de fraturas da tuberosidade da tíbia em pacientes pediátricos e adolescentes

Abstract Objective To review knee magnetic resonance imaging (MRI) scans for the analysis of the location of neurovascular structures (NVSs), and to define the risk of bicortical fixation. Methods Distances between the posterior cortex and the popliteal NVSs were measured on the MRI scans of 45 adolescents (50 knees) at 3 levels (C1: center of the proximal tibial epiphysis; C2: 10 mm distal to the physis; and C3: 20 mm distal to the physis). The NVSs located between 5 mm and 10 mm from the incision were considered in a zone of moderate risk for damage, while those less than 5 mm from the incision were considered in a zone of high risk for damage, and those more than 10 mm from the incision were considered to be in a zone of low risk for damage. The independent Student t-test was used for the comparison of the NVS distance 0with gender, skeletal maturity, and the tibial tubercle-trochlear groove (TT-TG) distance. Values of p < 0.05 were regarded as statistically significant. Results The path of the C1 screw posed an increased risk of damage to the popliteal artery and vein compared with other screw paths (p < 0.001). The popliteal artery has a high risk of damage at the level of C1 (4.2 ± 2.2mm), and a moderate risk at C2 (9.6 ± 2.4mm), and the popliteal vein has a moderate risk at C1 (6.0 ± 2.7 mm), and a low risk at C2 and C3 (10.8 ± 3.1mm, and 12.05 ± 3.1mm respectively). The C3 position presented the lowest risk of damage to these structures (p < 0.001). The distance between the posterior tibial cortex and the posterior tibial nerve was < 15 mm at the 3 levels analyzed (C1: 11.0 ± 3.7 mm; C2:13.1 ± 3.8 mm; and C3:13 ± 3.9 mm). Conclusions The present study clarifies that the popliteal vessels are at risk of injury during tibial tubercle screw fixation, particularly when drilling the proximal tibial epiphysis. Monocortical drilling and screw fixation are recommended for the surgical treatment of tibial tubercle fractures. Level of Evidence III Diagnostic study.

Resumo Objetivo Revisar estudos de ressonância magnética (RM) do joelho para análise da localização das estruturas neurovasculares (ENVs) e definição do risco de fixação bicortical. Métodos As distâncias entre o córtex posterior e as ENVs poplíteas foram medidas nas RMs de 45 adolescentes (50 joelhos) em 3 níveis (C1: centro da epífise proximal da tíbia; C2:10 mm distalmente à fise e C3: 20 mm distalmente à fise). Considerou-se que as ENVs entre 5mme10mmda incisão estavam na zona de risco moderado de lesão, as ENVs a menos de 5 mm da incisão, na zona de alto risco de lesão, e as ENVs a mais de 10 mm da incisão, na zona de baixo risco de lesão. O teste t de Student independente foi usado para comparar a distância até as ENVs com o gênero, a maturidade esquelética e a distância entre a tuberosidade tibial e a garganta (fundo) da tróclea (TT-GT). Valores de p < 0,05 foram considerados estatisticamente significativos. Resultados A trajetória do parafuso em C1 apresentou maior risco de lesão à artéria e à veia poplítea em comparação com outras trajetórias (p < 0,001). A artéria poplítea apresenta risco de lesão alto em C1 (4,2 ± 2,2 mm) e moderado em C2 (9,6 ± 2,4 mm), e a veia poplítea tem risco moderado em C1 (6,0±2,7 mm) e baixo em C2 e C3 (10,8±3,1 mm e 12,05±3,1mm, respectivamente). A posição C3 apresentou o menor risco de lesão dessas estruturas (p < 0,001). A distância entre o córtex tibial posterior e o nervo tibial posterior foi inferior a 15 mm nos 3 níveis analisados (C1: 11,0±3,7mm; C2: 13,1±3,8 mm; e C3: 13±3,9mm). Conclusões Este estudo esclarece que os vasos poplíteos correm risco de lesão durante a fixação do parafuso na tuberosidade tibial, principalmente durante a perfuração da epífise proximal da tíbia. A perfuração monocortical e a fixação com parafusos são recomendadas para o tratamento cirúrgico das fraturas da tuberosidade tibial. Nível de Evidência III Estudo diagnóstico.

Trauma penetrante de arteria vertebral. Del control de daños a lo endovascular

Introducción: El trauma penetrante de la arteria vertebral es extremadamente infrecuente. Objetivo: Aportar evidencia clínica mediante la revisión de una serie de casos. Materiales y Método: Se analizan cuatro casos de trauma penetrante con compromiso de la arteria vertebral entre los años 2020 y 2021, manejados en la unidad de trauma y urgencias del Complejo Asistencial Dr. Sótero del Río. Resultados: Se presentan cuatro casos clínicos relatando su proceso diagnóstico y manejo. Discusión: La evidencia de compromiso traumático de arteria vertebral es escasa. Reconocer su compleja anatomía y variada clínica resultan trascendentales para su adecuado manejo. Ante sospecha de este tipo de lesión, la angiografía por tomografía computada es el estudio de elección cuando se presentan hemodinámicamente estables. El abanico de opciones terapéuticas incluyen: observación, terapia antitrombótica o con antiagregantes, terapia endovascular o cirugía abierta. Conclusión: El trauma penetrante de arteria vertebral es una condición infrecuente, sin embargo, su diagnóstico y manejo deben ser conocidos por el cirujano.

Introduction: Traumatic involvement of the vertebral artery is extremely rare and difficult to diagnose. Objective: To provide clinical evidence by reviewing a case series. Materials and Method: We analyze four cases of penetrating trauma with involvement of the vertebral artery between 2020 and 2021, managed in the trauma and emergency unit of the Dr. Sótero del Río Care Complex. Results: Four clinical cases are presented describing diagnosis and management process. Discussion: There is little evidence of traumatic involvement of the vertebral artery. Recognizing its complex anatomy and varied clinic are transcendental for its proper management. When this type of lesion is suspected, computed tomography angiography is the choice study when hemodynamically stable. The range of therapeutic options include observation, antithrombotic or antiplatelet therapy, endovascular therapy or open surgery. Conclusion: Penetrating trauma of the vertebral artery is an uncommon condition, however, its diagnosis and management should be known to the surgeon.

Lesión quirúrgica de vía biliar compleja. Manejo conservador / Complex bile duct injury. Conservative management

RESUMEN La colecistectomía laparoscópica es el tratamiento de elección para la litiasis vesicular sintomática. Aunque la tasa de complicaciones es baja, las lesiones de la vía biliar representan un grave problema. La asociación con una lesión vascular (lesión compleja) genera un impacto adicional, disminuyendo la calidad de vida y la sobrevida a largo plazo. Presentamos el caso de una paciente con lesión compleja por compromiso vascular del pedículo hepático derecho que desarrolló una atrofia del parénquima correspondiente. Ante la ausencia de complicaciones sépticas, el tratamiento no operatorio pudo realizarse en forma exitosa.

ABSTRACT Laparoscopic cholecystectomy is considered the standard of care for symptomatic cholelithiasis. Although the rate of complications is low, bile duct injuries represent a serious problem. The association with vascular injury (complex injury) poses an additional impact by reducing the quality of life and long-term survival. We report the case of a female patient with complex injury due to vascular involvement of the right hepatic pedicle who developed right liver atrophy. Non-operative management was successful due to the absence of septic complications.

Risk factors of hepatic artery injury during percutaneous transhepatic biliary drainage / 中华普通外科杂志

Objective:To investigate the incidence and risk factors of hepatic artery injury during percutaneous transhepatic biliary drainage (PTBD).Methods:From Apr 2002 to Dec 2020, the clinical data of 1 446 patients undergoing PTBD were retrospectively analyzed.Results:Hepatic artery injury occurred in 7 cases, with an incidence of 0.48%. Fluoroscopy guided puncture was used in all cases. In those 7 cases (0.48%) a drainage catheter was failed to put in place after multiple attempts, hepatic artery injury occurred in 1 case; One drainage catheter was inserted in 1 314 cases (90.87%), hepatic artery injury occurred in 5 cases; One hundred and twenty-five cases (8.65%) were implanted with two drainage catheter, and 1 case had hepatic artery injury. Failure to successfully insert the drainage catheter increase the incidence of hepatic artery injury ( OR=0.06,95% CI 0.01-0.71, P=0.026) .There were 1 430 cases (98.89%) with oblique needle tip and 5 cases had hepatic artery injury; There were 16 cases (1.11%) with triangular needle tip and 2 cases had hepatic artery injury. Triangular needle tip increased the incidence of hepatic artery injury( OR=55.57, 95% CI 6.84-451.38, P<0.001). Conclusion:Hepatic artery injury is a rare complication of PTBD.The use of triangular needle and the failure of drainage were the risk factors of hepatic artery injury.

Research Progress of Carotid Artery Injury Caused by Radiotherapy for Nasopharyngeal Carcinoma / 肿瘤防治研究

Neck radiotherapy is an important means to prevent and treat cervical lymph node metastasis of nasopharyngeal carcinoma. Studies have found that radiation can directly or indirectly damage blood vessels, accelerate the process of atherosclerosis, and then cause carotid artery stenosis, increasing the risk of transient cerebral ischemia and stroke after radiotherapy. At present, we often apply color doppler ultrasound to detect the changes of carotid artery and actively prevent and reduce risk factors to decrease the occurrence of carotid artery stenosis. Carotid artery stenosis can be treated with early drug intervention and surgery. This article reviews the current research status of carotid artery injury caused by radiotherapy.

Endovascular repair of subclavian artery injury secondary to internal jugular vein catheterization: case report / Correção endovascular de lesão de artéria subclávia secundária à cateterismo de veia jugular interna: relato de caso

Abstract Background and objectives Ultrasound-guided internal jugular vein catheterization is a common and generally safe procedure in the operating room. However, inadvertent puncture of a noncompressible artery such as the subclavian artery, though rare, may be associated with life-threatening sequelae, including hemomediastinum, hemothorax, and pseudoaneurysm. Case report We describe a case of the successful endovascular repair of right subclavian artery injury in a 75-year-old woman. Subclavian artery was injured secondary to ultrasound-guided right internal jugular vein catheterization under general anesthesia for orthopedic surgery. Conclusion Under general anesthesia several factors such as hypotension can mask the signs of subclavian artery injury. This case report indicates that clinicians should be aware of the complications of central venous catheterization and take prompt action.

Resumo Justificativa e objetivos A cateterização da veia jugular interna guiada por ultrassom é um procedimento comum e geralmente seguro em sala cirúrgica. No entanto, a punção inadvertida de uma artéria não compressível, como a artéria subclávia, embora rara, pode estar associada a sequelas e risco para vida, incluindo hemomediastino, hemotórax e pseudoaneurisma. Relato de caso Descrevemos um caso bem-sucedido da correção endovascular de lesão da artéria subclávia direita em uma paciente de 75 anos. A artéria subclávia foi lesionada após cateterização guiada por ultrassom da veia jugular interna direita sob anestesia geral para cirurgia ortopédica. Conclusão Sob anestesia geral, vários fatores, como a hipotensão, podem mascarar os sinais de lesão da artéria subclávia. Este relato de caso indica que os médicos devem estar cientes das complicações da cateterização venosa central e tomar medidas imediatas.

Axillary Artery Injury with Intact Radial Pulse following Fracture-Dislocation of Shoulder: A Case Report

@#The occurrence of axillary artery injury following proximal humerus fracture dislocation in elderly patient with low velocity fall is uncommon. The patient could have diverse clinical presentations in spite of intact peripheral pulses. We report the case of an 85-year-old lady who presented to our emergency department with greater tuberosity fracture of the humerus with dislocation of the right shoulder. After closed manipulative reduction of the dislocation, it was observed that the patient had brachial plexus palsy with intact radial pulse. An expanding swelling and bruise around the shoulder was noted and a steady drop in haemoglobin level. CT angiogram revealed avulsion of the posterior circumflex artery which was then treated successfully with stenting.

Retroperitoneal hematoma following common iliac artery injury in a child / 世界急诊医学杂志（英文）

@#A six-month-old child with a history of coarctation of aorta repair admitted to our hospital with recoarctation. She underwent cardiac catheterization for stent placement via right femoral access. Reportedly, there was difficulty inserting and removing the sheath. There was no bleeding or hematoma and the distal pulse well felt at the completion of the procedure. While in recovery unit child acutely deteriorated with tachycardia, oxygen desaturation, and hypotension. She was then endotracheally intubated and started on fluid resuscitation and on vasopressors infusion. Upon arrival to the pediatric intensive care unit (PICU) child was tachycardic, pale and noted a mass on the right lower quadrant of the abdomen. Her hemoglobin dropped from 12 gm/dL to 5 gm/dL. Given the child with hemorrhagic shock, and with right lower quadrant abdominal mass, a possibility of retroperitoneal hematoma (RPH) was considered. Other possible causes of hemorrhagic shock, such as vascular access site bleeding, pleural and pericardial effusions were ruled out.

Diagnosis,treatment and etiology of hepatic infarction and abscess after pancreaticoduodenal surgery / 中国实用外科杂志

OBJECTIVE: To explore the causes and treatment of hepatic infarction and abscessafter pancreaticoduodenal surgery.METHODS: The clinical data of 11 cases of hepatic infarction or abscess after pancreaticoduodenal surgery in Peking Union Medical College Hospital between January 2012 and December 2018 were analyzed retrospectively.RESULTS: A total of 11 patients were diagnosed of hepatic infarction or abscess after PD.The overall mortality rate was27.3%(3 of 11 patients).54.5%(6/11)had biliary fistula.Of the 11 patients,7 had proper hepatic artery and right accessory hepatic artery occlusion or stenosis,1 had abdominal trunk root stenosis before operation,and 3 had PV stenosis.Enterococcus and Klebsiella were the organisms most frequently cultured,and fungi were also the common pathogens.Antibiotics and selective percutaneous drainage were the main means of treatment.CONCLUSION: Ischemia of hepatic artery and portal vein after PD is the main cause of liver infarction and liver abscess.Biliary fistula and multiple pathogenic bacteria are often associated with high mortality.

Clinical features and trend analysis of Kawasaki disease from 2007 to 2016: a single-center study / 中华实用儿科临床杂志

Objective To analyze the clinical features of children with Kawasaki disease(KD) in order to find out the trend of its clinical features and to provide guidance for clinical diagnosis and treatment.Methods Children with KD hospitalized in the Pediatric Ward of Peking University Third Hospital from January 2007 to December 2016 were collected and analyzed for their characteristics of onset,clinical features and treatment.The children were divided into 2 groups according to the time:2007 to 2011 group,2012 to 2016 group.The changes in clinical characteristics between the 2 stages were analyzed.Results A total of 337 children with KD were enrolled in this study,including 212 males and 125 females,with a ratio of 1.69 ∶ 1.00.The age of onset was from 2 months to 12 years old.The median age was 24 months.A total of 325(96.4％) children were under 6 years of age.There were 114(33.8％) cases of KD children from 2007 to 2011,among whom incomplete KD (IKD),intravenous gamma globulin non-response and coronary artery injury cases accounted for 23.7％ (27 cases),4.5％ (5 cases),38.6％ (44 cases),respectively;there were 223 (66.2％) cases of KD children from 2012 to 2016,among whom IKD,intravenous gamma globulin non-response and coronary artery injury cases accounted for 38.6％ (86 cases),11.9％ (26 cases),31.4％ (70 cases),respectively.The group of 2012 to 2016 was compared with the the group of 2007 to 2011 and it was found that the proportion of IKD and intravenous gamma globulin non-response cases increased,and the differences were significant (x2 =7.495,4.654,P =0.006,0.031),but the proportion of coronary artery injury cases decreased with no statistical difference (x2 =1.750,P =0.186).Conclusion With the incidence of KD increasing,the proportion of incomplete KD and intravenous gamma globulin non-response KD also showed an upward trend,which should be paid more attention to by clinicians in order to promptly diagnose and implement more targeted treatment.

Airway management in a displaced comminuted fracture of the mandible and atlas with a vertebral artery injury: A case report

Complex cervical spine fractures are a serious complications of maxillofacial trauma and associated with high mortality and neurological morbidity. Strict vigilance in preventing further insult to the cervical spine is a crucial step in managing patients who are at risk for neurologic compromise. We report a rare case of a right transverse process of atlas fracture with right-sided vertebral artery injury that was associated with a comminuted fracture of the body and angle of the mandible, which restricted mouth opening. Airway management was performed by an awake fiber-optic nasotracheal intubation, where neck movement was avoided with a cervical collar. Vertebral artery injuries may have disastrous consequences, such as basilar territory infarction and death, and should be suspected in patients with head and neck trauma. After mandibular plating, the patient was on cervical collar immobilization for 12 weeks and anti-coagulant therapy.

Percutaneous endovascular treatment for acute brachial artery injury: clinical results of 26 cases / 介入放射学杂志

Objective To investigate the clinical effect of percutaneous endovascular treatment for acute brachial artery injury.Methods The clinical data of 26 patients with acute brachial artery injury,who were treated at authors' hospital during the period from January 2005 to February 2014,were retrospectively analyzed.Brachial artery occlusion was proved by angiography via femoral access,and the extent and degree of arterial obstruction were verified.The radial artery of the affected side was punctured when antegrade recanalization of the occlusion failed.By using bidirectional subintimal recanalization technique,the working guide wire channel was established,which was followed by balloon dilatation and stent implantation.Results Technical success rate was 100％.All the 26 patients were followed up for 6-36 months,among whom vascular patency was kept in 21 and stent stenosis was observed in 5,for these patients balloon dilation had to be carried out immediately and the blood flow returned to normal rapidly.During the follow-up period,no ischemic necrosis occurred and no amputation surgery was needed.Conclusion In treating acute brachial artery injury,percutaneous endovascular therapycan quickly open the brachial artery lumen and restore the blood flow,the clinical effect is very significant.

Endovascular repair with covered stent for the treatment of ruptured carotid artery pseudoaneurysms / 介入放射学杂志

Objective To evaluate the efficacy and safety of endovascular repair with covered stent in treating ruptured carotid artery pseudoaneurysms.Methods The clinical data of 15 patients with ruptured carotid artery pseudoaneurysm,who were admitted to Sun Yat-Sen Memorial Hospital of Zhongshan University during the period from July 2009 to July 2015 to receive emergency rescue with endovascular covered stent implantation,were retrospectively analyzed.Of the 15 patients,the rupture of common carotid artery pseudoaneurysm caused by direct trauma was seen in one and caused by cervical operation was observed in one,the rupture of internal carotid artery pseudoaneurysm caused by cervical operation was found in 3,and the rupture of internal carotid artery pseudoaneurysm due to radiotherapy for nasopharyngeal carcinoma was seen in 10.Results Successful rescue with endovascular repair using covered stent implantation was obtained in all 15 patients.No immediate procedure-related complications or death occurred.The mean follow-up time was 11 months.During the follow-up period,no re-bleeding or cerebral ischemic complications occurred.Conclusion For the treatment of ruptured carotid artery pseudoaneurysms,endovascular repair with covered stent is minimally invasive,safe and effective with less complications;and along with the occlusion of carotid artery rupture,the blood supply of the head and neck returns to normal.However,further clinical researches with larger samples are needed before its long-term efficacy can be completely clarified.

Radiographic assessment of vertebral artery injury in anterior cervical surgery in healthy adults / 中华外科杂志

Objectives@#To study the relationship between the anatomical parameters of transverse foramen and intervertebral discs in the cross-section of the cervical spine in healthy adults, and to evaluate the risk of vertebral artery injury in the anterior cervical spine surgery.@*Methods@#There were 24 healthy adults(12 male, 12 female) underwent neck CT angiography with clear vertebral artery and the adjacent structure imaging from June to December 2014 in Huashan Hospital, Fudan University. The anatomical parameters of vertebral artery V2 segment with lower cervical vertebrae and intervertebral discs were measured by cross-sectional images of C3-6. The corresponding parameters of different sex and both sides of the same segment were analyzed by independent samples t-test and paired t test, respectively. The least significant difference(LSD) t test was used to compare the corresponding data between different segments.@*Results@#The vertebral artery was not walking in the middle of the transverse foramen in healthy individual, but partial medial, partial front walking. Transverse diameter of transverse foramen in male and female were 6.62-6.89 mm and 6.21-6.45 mm, and sagittal diameter was 5.41-6.48 mm and 5.40-6.10 mm, respectively.The transverse foramen were slightly oval. The distance between vertebral artery and midline in male and female were 14.23-16.12 mm and 13.60-15.04 mm, respectively, which was much larger than the width of cervical vertebral corpectomy. Compared with C3-4, intervertebral disc, the transverse distance between the vertebral artery and the uncovertebral joint of C4-5, C5-6 was smaller, and the distance from the vertebral artery to the posterior margin of the uncovertebral joint was relatively small, the difference was statistically significant (t=2.449, P=0.022). The distance from vertebral artery to the posterior margin of uncinate process was 1/5-2/5 of the distance between the anterior and posterior edge of the corresponding segmental vertebra.@*Conclusion@#Based on this anatomical study, the risk of vertebral artery injury in conventional anterior cervical decompression is small, and the risk of vertebral artery injury in different segments is slightly different.

Intraoperative Common Carotid Artery Injury during Ventriculoperitoneal Shunt Surgery

There are a number of complications associated with ventriculoperitoneal shunt (VPS) surgery. The authors present a rare case of iatrogenic common carotid artery injury during VPS surgery.

Atlantoaxial Stabilization Using C1 and C2 Laminar Screw Fixation

We describe the use of a C1 laminar screw in combination with a C2 laminar screw as a salvage technique to treat two patients, one with persistent first intersegmental artery and the other with vertebral artery occlusion after cervical spine fracture. The combined use of C1 and C2 laminar screws allows for good fixation of the atlantoaxial joint with a lower risk of vertebral artery injury; therefore, it can be an alternative surgical procedure for patients with congenital or traumatic anomalous vertebral artery.

Surgical treatment for fracture-dislocation of upper cervical spine complicated with vertebral artery injury / 中华创伤骨科杂志

Objective To explore the perioperative management and surgical outcomes of fracture-dislocation of the upper cervical spine complicated with vertebral artery injury.Methods We retrospectively analyzed the clinical data of 19 patients diagnosed with fracture-dislocation of the upper cervical spine complicated with vertebral artery injury who had been treated at our department from January 2008 through December 2012.They were 14 males and 5 females,aged from 22 to 53 years (mean,35.2 years).All the patients had fractures of the atlas and/or axis,and disordered atlanto-axial relationship as well.According to Frankel grading system,8 cases were Grade D and 11 Grade E.The cervical posterior fixation with pedicle screws was adopted for all and hemostasis was conducted for those with bleeding from the broken vertebral artery.Their Frankel grade,Japanese Orthopedic Association (JOA) score and visual analogue scale (VAS) score were compared between preoperation and final follow-up.Results Intraoperative hemorrhage occurred in 2 patients from the injured vertebral artery.Hemostasis was achieved through direct tamponade with bone wax and gelatin sponge in one and through endovascular intervention after bleeding control by direct tamponade in another.Neither of them presented with symptoms of posterior circulation ischemia after operation.The mean operation time was 153.5 min,and the mean blood loss was 542.1 mL.All the patients were followed up for an average time of 28 months.Bony union was obtained in all after an average time of 13.5 weeks.Follow-ups revealed no ischemic stroke in this series.Symptoms of transient ischemic attack,like transient dizziness and blurred vision,appeared in 2 patients.At the final follow-up,all the patients were assessed as Frankel Grade E.Their mean JOA and VAS scores were significantly improved from 8.1 ± 1.2 and 7.0 ± 1.7 preoperatively to 12.7 ± 1.6 and 1.3 ± 1.2,respectively (P ＜ 0.05).Conclusions Angiography examination is routinely indicated for the patients with fracture-dislocation of the upper cervical spine perioperatively.Preoperative evaluation of the vertebral artery and its adjacent structures and effective intraoperative hemostasis can avoid uncontrollable bleeding during operation,reduce postoperative complications,and improve surgical outcomes.

Effects of different clipping time of aneurysm clips on common carotid artery wall in rabbits / 中国脑血管病杂志

Objective To investigate the effects of different clipping time of first time using permanent aneurysm clips on common carotid artery wall in rabbitsMethods Sixty healthy male Japanese white rabbits were selected.The first time permanent aneurysm clips were used to clip common carotid artery for 30 min or 60 min respectively according to the random number method (n=30 in each group).Thirty segments of common carotid artery specimens clipped by aneurysm clips were collected respectively.Mean-Whitney U test was used to conduct the comparison of histopathological damage grade of vascular wall.Results The aneurysm clips were use to clip 30 min and 60 min caused vascular wall injury could observe the middle elastic plastic plate deformation and endothelial denudation.The vascular walls in the clipping 60 min group had local necrosis with inflammatory response,and even rupture of vascular wall.There were significant differences in overall damage degree of vascular wall (U=324.00,P=0.045) and severe injury rate (0%[0/30] vs.20.0%[6/30],P=0.031) between the clipping 30 min group and the clipping 60 min group (all P<0.05).Conclusion The vascular wall injury of using disposable permanent aneurysm clips for clipping 60 min was more severe than 30 min.Attention should be paid to shortening the time of carotid artery occlusion in operation.

Vertebral Artery Injury in C2-3 Epidural Schwannoma Resection: A Case Report and Literature Review / 대한신경손상학회지

The incidence of vertebral artery (VA) injury (VAI) in posterior approach tumor resection surgery is extremely rare, but it can lead to serious complication. In this case, a 57-year-old man underwent surgery for resection of the tumor involving left epidural space and neural foramen at C2-3 level. Iatrogenic VAI occurred suddenly during tumor resection procedure using pituitary forceps. Immediate local hemostasis and maintaining of perfusion for reducing the risk of posterior circulation ischemia were performed. Intraoperative angiogram of both VA and emergent trapping embolization were done as well. It may reduce the risk of immediate postop complication, and further delayed occurrence. The patient had no complication after VAI by appropriate intraoperative management. Preoperative angiographic work up and preparation of endovascular team cooperation are positively necessary as well as a warning for the VAI during cervical spine surgery.