Р е ф е р а т DOI: 10.17750/KMJ2017-796 В настоящем обзоре представлены современные данные о проблеме инфекций в области хирургическо-го вмешательства в спинальной нейрохирургии. Инфекционные осложнения -наиболее распространённая причина неудовлетворительных результатов хирургического лечения и увеличения сроков госпитализации у пациентов после операций на позвоночном столбе. Клинико-экономический анализ показывает, что каждый случай инфекции в области хирургического вмешательства обусловливает дополнительные 7,3 койко-дня в послеоперационном периоде и 3152 доллара дополнительных расходов на одного пациента. По данным миро-вой литературы, частота развития раневой инфекции в спинальной нейрохирургии варьирует от 0,7 до 11,9%. Основные факторы риска развития данного осложнения -длительный период от момента госпитализации до выполнения операции, значимый объём кровопотери и большая продолжительность оперативного вмешатель-ства. В статье особое значение в развитии раневой инфекции отведено синдрому мальнутриции. Пациенты, страдающие этим синдромом, относятся к группе высокого риска развития инфекции в области хирургичес-кого вмешательства. Недостаточное количество белка и энергетических веществ становится причиной нару-шения репаративных процессов в ране и снижения уровня иммунной защиты. Диагностика раневой инфекции основана на комплексном анализе результатов клинических и лабораторно-инструментальных методов иссле-дования. В обзоре приведены современные данные о возбудителях инфекционного процесса в ране, схемах антибиотикопрофилактики и эффективных методах лечения (местная и системная антибиотикотерапия, ваку-ум-ассистированное закрытие, проточно-промывное дренирование, гипербарическая оксигенация). Бесспорно, ранняя диагностика и правильно выбранная тактика ведения пациентов позволяют купировать признаки ра-невой инфекции и избежать неблагоприятных клинических исходов после декомпрессивно-стабилизирующих оперативных вмешательств на позвоночнике.Ключевые слова: инфекции в области хирургического вмешательства, спинальная нейрохирургия, опера-ции на позвоночнике, раны, антибиотикопрофилактика. The review presents current data on the problem of surgical site infections in spinal neurosurgery. Infectious complications are the most common cause of unsatisfactory results of surgical treatment and prolonged hospital stay of patients after spinal surgery. Clinical and economic analysis shows that each case of infection at the site of surgical intervention causes additional 7.3 days of hospital stay in the postoperative period and $3152 extra costs per patient. According to the world literature, the incidence of wound infection in spinal neurosurgery varies from 0.7 to 11.9%. The main risk factors for this complication are long period from the moment of hospitalization to the operation, significant blood loss and long duration of surgical intervention. In the article, special role in the development of wound infection is given to the malnutrition syndrome. Patients suffering from this syndrome are considered to be at high...

Backgraund: Minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) is becoming the most popular treatment method in modern vertebrology. But at the same time, limited working space, significant intraoperative radiation exposure and high risks of developing perioperative complications associated with a long learning curve are constraints for the widespread use of this technology by most spinal surgeons. Aims: to conduct a meta-analysis based on the results of prospective cohort clinical studies that compare the results of the application of minimally invasive and open transforaminal interbody spinal fusion techniques in treating patients with degenerative lumbar diseases. Materials and methods: A search for randomized clinical trials was conducted in the Pubmed, EMBASE, eLibrary and Cochrane Library databases published from January 2008 to December 2018, which compared the results of minimally invasive (MIS-TLIF) and open (Open-TLIF) techniques transforaminal interbody fusion in treating patients with degenerative diseases of the lumbar spine. For dichotomous variables, the relative risk and 95% confidence interval were calculated; in turn, standardized difference of mean values and their 95% confidence intervals were used for continuous variables, using the random effects model. Results: The meta-analysis included 21 prospective cohort studies, three of which were randomized controlled clinical trials. The results of the surgical treatment of 1762 patients with degenerative diseases of the lumbar spine were evaluated in total. In the MIS-TLIF group, reliably smaller parameters of the duration of surgical intervention (p0.00001), the volume of intraoperative blood loss (p0.00001), the timing of postoperative inpatient treatment (p0.00001), the economic costs of treatment (p0.00001) and the number of perioperative adverse effects (p=0.006). At the same time, the duration of intraoperative fluoroscopy is registered significantly less in the Open-TLIF group (p0.00001). Conclusions: The MIS-TLIF method in comparison with the Open-TLIF method has significantly lower objective indicators characterizing the invasiveness of the surgical intervention, as well as the development of undesirable consequences, the associated shorter duration of hospitalization and financial costs for treating patients with degenerative diseases of the lumbar spine. At the same time, significantly more time of intraoperative irradiation was confirmed, due to the technical features of performing transcutaneous closed manipulations in the absence of direct visualization of the operated segment in the MIS-TLIF group.

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Background: Both the high frequency of recurrence of large or giant paraclinoid aneurysms (PA) of the internal carotid artery and the occurrence of intra- and postoperative complications, leading to unsatisfactory results of surgical treatment of this group of patients, make the stated problem urgent. Flow-diverter embolization devices are actively used in many large international neurosurgical centers for the treatment of cerebral aneurysms of different morphology, size, and localization. Currently, there are very few reports on the effectiveness of the use of flow diverting stents in the surgical treatment of large and giant PA of the internal carotid artery. The results of these studies are controversial and largely contradictory. Aim: Outcome analysis of the use of Pipeline embolization device (PED) for the surgical treatment of large and giant carotid PA. Methods: The study enrolled 37 patients (25 women, 12 men; mean age 51.7±10.7 years) who were divided into those treated with the PED alone versus those treated with the PED and concurrent coil embolization. The average follow-up period was 19.7±3.8 months. Results: In 56.7% of cases, PA caused the development of an insignificant neurological deficit (Modified Rankin Scale 1−2). In 18.9% of patients, PA provoked a gross neurologic deficit (MRS 3−5). 24.3% of patients with PA did not have any clinical-neurological manifestations. After the surgery, neurologic status improved in 32.4% of patients, remained the same — in 45.9% of cases, and the degree of neurologic deficit increased in 21.6%. PED procedure was performed in 70.2% of patients. In 29.7% of cases, the dislocation of large or giant PA of the internal carotid artery from the systemic blood stream was performed using PED and concurrent coil embolization. At the indicated period of patient observation, complete occlusion of large and giant carotid PA was achieved in 75.6% of cases, almost complete and partial occlusion — in 24.3%. The incidence of thromboembolic and hemorrhagic complications was 10.8% and 8.1%, respectively. Mortality rate among patients was 2.7%. Conclusions: The use of PED is an effective method for occluding large or giant PA of the internal carotid artery. Nevertheless, this method of endovascular treatment of PA is associated with a high complication incidence.

Background: Brain metastases are observed in up to 40% of all intracranial tumors. Some types of metastatic tumors cause difficulties in differential diagnosis, since they have similar signal characteristics with other pathological entities in neuroimaging. Obviously, the additional diagnostic methods to determine the prognosis and tactics of further management of this group of patients should be implemented.Aim: To study the role of diffusion-weighted magnetic resonance imaging (MRI) in differential diagnostics and predicting the survival rate in patients with brain metastases. Materials and methods: The study included data from MRI and morphological studies of 23 patients with brain metastases. The obtained values of the apparent diffusion coefficient (ADC) of tumors were compared with their histological type, cell density, and the index of proliferative activity Ki-67. In addition, the influence of ADC values on the overall survival rate was assessed.Results: A reliable inverse correlation of ADC values and the index of proliferative activity for various types of brain metastases (r=-0.74, p=0.014) was established. The dependence of ADC values and overall survival rate of patients with metastases in the brain is presented. The overall survival rate in patients with an ADC value greater than 947.2 mm2/sec was 9.8 months (95% CI: 8.6−11.3), and with ADC value less than 947.2 mm2/sec ― 6.4 months (95% CI: 3.7−9.1).Conclusion: The technique of diffusion-weighted MRI plays an important role in the differential diagnosis of brain metastases; it can be used as a tool of comprehensive preoperative assessment when planning the surgery and as a prognostic factor of overall survival rate for this group of patients.

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Background: Dorsal decompressive-stabilizing techniques laminotomy with laminoplasty (LP) and laminectomy with instrumental fixation (LF) are effective methods for surgical treatment of patients with multi-level degenerative diseases of the cervical spine. At the same time, there is currently no priority in determining the optimal method for posterior decompression and stabilization. Aim: conduct a comparative analysis of intraoperative parameters, clinical outcomes, radiological results and complications of LP and LF in the treatment of patients with multilevel degenerative diseases of the cervical spine. Methods: A meta-analysis of prospective cohort clinical trials was carried out, the primary sources were searched using the databases PubMed, CNKI, eLibrary and the Cochrane Library, published until March 2019, which compared the results of applying the LP and LF methods in the treatment of patients with multilevel degenerative diseases of the cervical spine. For dichotomous variables, the relative risk and the 95% confidence interval were calculated; in turn, for the continuous variables, the standardized difference of the mean values and their 95% confidence intervals were used, using random effect models and a fixed effect. Resuts: The meta-analysis included 6 prospective clinical trials, one of which was a randomized controlled trial. In total, the results of surgical treatment of 493 patients with multilevel degenerative diseases of the cervical spine were evaluated. In the group of drugs, statistically significantly smaller parameters of the duration of surgical intervention were verified (p 0.00001). At the same time, comparable parameters of cervical lordosis after surgery, the level of pain in the cervical spine, functional status according to NDI and JOA after surgery, the frequency of perioperative complications (p = 0.17, p = 0.05, p = 0.94, p = 0.96, p = 0.24, respectively). Conclusions: A meta-analysis showed that the functional outcomes of LP and LF, as well as instrumental results in the treatment of multilevel degenerative diseases of the cervical spine, are not clinically significant. In this case, the LP technique can be performed in a shorter period of time compared with LF.

Background: Intradural spinal cord tumors include extramedullary and intramedullary tumors. The search for literature sources in the Pubmed, Medline, and E-Library databases detected a little number of researches on the long-term results of the surgical treatment of intradural spinal cord tumors. These clinical series include a small number of patients and do not consider the factors influencing clinical outcomes of surgical treatment.Aim: To evaluate the long-term results of surgical treatment in patients with intradural spinal cord tumors, to identify the main factors influencing the clinical and neurological outcomes of surgical interventions in this group of patients.Materials and methods: The study included 277 medical records of 244 patients with intradural extramedullary and 33 patients with intradural intramedullary tumors of the spinal cord. Clinical-neurological outcomes of surgical treatment in patients with intradural spinal cord tumors and factors influencing the outcomes were analyzed.Results: When comparing the degree of neurologic deficit in patients with intradural extramedullary tumors prior to surgery, no significant differences were found (p=0.241) both in the early postoperative period and 6 months after the surgery. Nevertheless, when comparing these indicators in a period of 12, 24, 36, 48, and 60 months after the surgery, statistically significant differences were revealed (p0.001). There was no statistically significant difference (p=0.437) between the scores in patients with intramedullary tumors on the modified McCormick Scale preoperatively, at the 6-month and one-year follow-up; however, comparison of the clinical and neurological indicators at 24, 26, 48, and 60 months revealed a significant difference (p0.001). The surgery outcomes in considered groups of patients were significantly influenced by the following indicators: the ASA risk level (odds ratio (OS) 2.138; 95% confidence interval (95% CI) 3.346–12.145) and intraoperative neurophysiological monitoring (OR 2.84; 95% CI 1.67–9.56).Conclusion: The study registered good and excellent long-term outcomes in most cases of intradural spinal cord tumors when the maximum possible tumor excision was performed. Analysis of the influence of various factors on the clinical and neurological outcomes in the study group of patients showed that the use of intraoperative neurophysiological monitoring and the degree of operational and anesthetic risk according to the ASA scale have a significant effect.