[Russian study on brain aneurysm surgery: a continuation (RIHA II)]. / Rossiiskoe issledovanie po khirurgii anevrizm golovnogo mozga: prodolzhenie (RIKhA II).

OBJECTIVE: To assess the main performance indicators of neurosurgical departments in surgical treatment of cerebral aneurysms in the Russian Federation. MATERIAL AND METHODS: We analyzed 22 neurosurgical departments (19 regional and 3 federal hospitals) in 2017 and 2021. The study enrolled 6.135 patients including 3.160 ones in 2017 and 2.975 ones in 2021. We studied the features of surgical treatment of cerebral aneurysms in different volume hospitals and factors influencing postoperative outcomes. RESULTS: The number of surgeries for cerebral aneurysms decreased from 2.950 in 2017 to 2.711 in 2021. Postoperative mortality rate was 6.3% and 5.6%, respectively. The number of microsurgical interventions decreased from 60% in 2017 to 48% in 2021. The share of endovascular interventions increased from 40% to 52%, respectively. Endovascular embolization was accompanied by stenting in 55% of cases. Simultaneous revascularization was carried out in 2% of cases. In 2021, the number of patients undergoing surgery in acute period of hemorrhage increased to 70% (in 2017 - 61%). The number of hospitals performing more than 50 surgical interventions for cerebral aneurysms annually increased from 14 in 2017 to 17 in 2021. CONCLUSION: Certain changes in neurosurgical service occurred in 2021 compared to 2017. Lower number of surgical interventions for cerebral aneurysms, most likely caused by the COVID-19 pandemic, is accompanied by lower postoperative mortality. Endovascular interventions and revascularization techniques became more common. The number of surgeries in acute period after aneurysm rupture and hospitals performing more than 50 surgical interventions for cerebral aneurysms annually increased.

[The formation of the School of Military Neurosurgery of the Military Medical Academy].

The article is devoted to stages of formation of the school of military neurosurgery. Famous pioneers of this school were Vsevolod Galkin and Boris Samotokin. Their scientific works were based on personal experience of treatment for the battle scull and brain injuries during the Great Patriotic War. The main aim of the activity of the talented researcher Vitally Khilko was to develop microneurosurgery, neuroimmunology and fundamental researchers of cerebral blood flow pathology. Boris Gaidar and Valeriy Parfyonov reorganized the echelon neurosurgical care system in a relatively short time. This reorganization formed the basis of the modem principles of specialized neurosurgical care in armed conflicts. At the present time department of neurosurgery is the leading methodological and clinical center of military neurosurgery in Russia.

[Surgical resection in combination with stereotaxic cryodestruction in patients with supratentorial gliomas in functionally significant areas of the brain: possibilities of using combined surgical treatment and its results].

A combined method of surgical treatment of glial tumors of the brain is proposed for decreasing risk of complications. The method includes microsurgical ablation of the main volume of the neoplasm and stereotaxic cryodestruction of the residual part of the tumor. Combined surgical treatment was used in 12 patients. The results obtained show that the proposed method elevates the efficacy of surgical method, facilitates increased indices of survival rate and maintenance of quality of life of the patients at the tolerant level.

[Treatment of extracranial gunshot wounds caused by non-lethal weapon].

The deaths happened as a result of wounds caused by non-lethal weapon (NLW) are mainly associated with severe and extremely severe damage of brain. However, vast number of specific problems occurs in cases of extracranial gunshot wounds caused by NLW. Taking into account little physicians' experience, and absence of standard approaches to treatment of these wounds till now. This paper embraces peculiarities of clinical signs, diagnosis and surgical treatment of cervical, truncal, and extremities wounds caused by NLW. Our investigation allowed to draw a conclusion that gunshot wounds caused by NLW have similar characteristics. These ones are the same with signs of wounds caused by small arms. Surgical treatment of wounds caused by NLW is based on the standard approaches to treatment of low-velocity missile wounds.

[The course of the postoperative period in patients with cerebral gliomas after different volumes and kinds of surgery].

The investigation included 340 patients with cerebral gliomas. Under analysis there were age, gender, neurological status and Karnovsky status before and after operation, localization of the tumor, type and volume of surgical intervention, postoperative complications. It was shown that radical extirpation of glial formations facilitated more favorable course of the postoperative period. Partial ablation of gliomas is associated with greater risk of the development of postoperative complications and neurological dysfunctions. As the main method of surgical treatment of patients with gliomas located in the functionally significant and deep areas of the brain stereotaxic cryotomy is thought to be indicated.

[Technique of stereotactic cryodestruction in management of patients with cerebral gliomas].

Aim of the study was to evaluate the safety and efficiency of stereotactic cryodestruction of supratentorial astrocytomas that were located deeply in the brain and/or within eloquent areas.We examined 74 patients aged 18-64 years with supratentorial gliomas of different grade located in deep or eloquent brain areas. All the patients underwent stereotactically guided cryodestruction of the tumor. The survival rate was evaluated by the Kaplan-Meier method. The chi-square method was used for comparative analysis of results of this study with available data from the literature. For the analysis of the prognostic importance of various factors the Cox proportional hazards model was applied. The average survival period was 12.4 months for glioblastoma (control group--6.4 months, p=0.04), and 46.9 months for anaplastic astrocytoma (control group--18 months, p=0.006). For patients with fibrillar-protoplastic astrocytoma the 5-year survival rate was 95.7%. The frequencies of complications did not exceed those of the routine surgical interventions in patients with brain tumors. We found that stereotactic cryodestruction as well the Karnofsky performance score were statistically reliable prognostic factors (p=0.0377 and p=0.0006, respectively), while the extent of cryodestruction and the residual tumor mass did not influence the survival rate. Stereotactic cryodestruction is a safe surgical procedure, which results in statistically significant improvement of survival in patients with supratentorial gliomas located within deep and/or eloquent areas of brain.

[Problem of resource supply of medical aid to wounded and damaged persons of neurosurgical profile].

Longstanding complex examination of problems of delivery of medical care to patients of neurosurgical profile, effectuating in Military-medicine academy by Kirov S.M., permitted to observe evacuation and treatment of patients of neurosurgical profile, their social rehabilitation and returning to their work, estimated the advantages of 2-stages evacuation of patients and delivery in hospitals of Center in comparison with multistage one. Were examined questions of rehabilitation, help to families of lost or invalid military servicemen. The authors, observed economical and social questions, made a conclusion: patients of neurosurgical profile have to receive medical care in specialized and equipped institutes of central level of rear of state occurring once and in full volume.

[Single-stage operations for synchronous multiple primary and metastatic cancer of the lung and other organs].

The work presents an experience with the diagnosing of synchronous tumors of double localization in 256 patients. Operations were performed on 146 of them. Single-stage operations were made in 55 cases. When performing single-stage operations, 20 patients were found to have cancer of the lung with distant metastases or cancer of other localization with a metastasis in the lung. In the other 35 patients the diagnosis of true polyneoplasia was made followed by radical operations. Advantages of single-stage operations are shown, performing the first stage of the operation on the lung being substantiated. The five year survival after surgical treatment of multiple primary cancer was 15%.

[Surgical treatment of lung cancer patients with brain metastases].

The authors present an experience with diagnosing and treatment of 16 patients suffering from lung cancer with solitary metastasis into the brain. The examination performed has shown that in 7 out of 16 patients the surgical treatment was found to be not expedient. This solution was based on the detection of an extensive spread of lung cancer: multiple metastasis outside the thoracic cavity and the brain or inside the brain, and in one case--due to a considerable reduction of indices of the functional and reserve capacities of respiration and blood circulation. Single-step operations were carried out in 9 patients with lung cancer with a solitary metastasis into the brain (resection of the lung with an ablation of the brain metastasis). Out of the 9 patients operated on 6 patients survived for as long as 1.5 to 2 years, one patient lived longer than 4 years. Two other patients operated upon in June 2003 and March 2004 are still alive and feel much better. Satisfactory results of treatment of these patients show such methods to be expedient.

[Dopplerographic assessment of the autoregulation of the blood supply to the brain in neurosurgical pathology]. / Dopplerograficheskaia otsenka autoreguliatsii krovosnabzheniia golovnogo mozga pri neirokhirurgicheskoi patologii.

The development of an informative, noninvasive technique for evaluating the reserve of the cerebral circulatory system is a topical task of clinical angioneurology. The authors developed methods of Doppler evaluation of an autoregulatory response from hyperemic changes after short-term regional hypotension caused by digital compression of the cervical carotid. They calculated the indices acceptable in routine clinical practice, defined the range of their values in health and in typical variants of cerebral circulatory insufficiency in patients with disseminated neurosurgical pathology. The carotid compression test by recording linear blood flow velocity in the cerebral arteries is a safe, valid, and reproducible method of semiquantitative assessment of the autoregulation reserve which may be used to determine the tension of resistive vessels in the middle cerebral arterial bed as an important index of the functional status of the cerebral circulatory system.

[Video endoscopy in neurosurgery]. / Videoéndoskopiia v neirokhirurgii.

The authors present an analysis of their experiences with performing more than 330 video endoscopic operations on the autopsy material and in 172 patients. In 54 of these patients operations were performed for traumatic intracranial convex hematomas, in 21 for adenomas of the hypophysis, in 14--for arterial aneurysms, and 53 patients with discogenic radiculitis, spinal tumors, consequences of severe spinal traumas. In 25 patients the endoscopic videomonitoring was made during excision of the tumors, paratumorous cysts and abscesses of the brain, decompression of the optic nerve, plasty of the anterior cranial fossa fundus with closing the liquor fistulas. Intraoperative angioscopy in carotid endarterectomy was fulfilled in 5 patients. The video endoscopy was proved to result in less traumaticity of the radical surgery. It is a valuable and highly informative method giving optimum results in performing many microsurgical operations.