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Biomedical subjects

O F Tropinskaia

Publications and source records attributed to O F Tropinskaia.

7 recordsLinked to original sources
PubMedDate not supplied

[Intravascular blood aspiration in large and giant parawedge aneurysm surgery].

The efficiency of a procedure of intravascular blood aspiration (IVBA) in patients with large and giant parawedge aneurysms of the internal carotid. The study was based on the analysis of clinical data and outcomes of surgical treatment in 20 patients with the aneurysms. The paper presents different procedures for IVBA, a complex of methods for preoperative examination of patients and intraoperative prediction of possible ischemic complications and defines indications for the IVBA procedure. Complete and partial aneurysm exclusion was achieved in 15 (75%) and 2 (10%) patients; the neck and walls of aneurysm were strengthened with surgical gauze in 2 (10%) patients. Incompetent clipping was observed in one case. There was recovery in 17 (85%), improvement in 2 (10%), 1 (5%) patients. No deaths occurred. The IVBA procedure for aneurysm is indicated for large and giant thin-walled non-thrombotic aneurysms of the parawedge carotid segment. It permit effective proximal monitoring of carotid blood flow and creates favourable conditions for preparing and excluding aneurysm, and, if necessary, forming a carotid lumen. Intraoperative monitoring of brain function is highly important and obligatory for early prediction and prevention of ischemic complications. Under intraoperative monitoring of brain function, fractional IVBA makes it effective even if collateral circulation is inadequate.

Adolescent↗
PubMedDate not supplied

[Amaurosis after surgical gauze fixation of walls of a giant fusiform internal carotid aneurysm].

A 42-year-old male patient was operated on for a giant fusiform aneurysm of the right internal carotid artery. Extracranial-intracranial bypass was first performed. Despite suction decompression, the aneurysm could not be clipped for its fusiform neck, and it was coated with surgical gauze. Before surgery, his bilateral visual acuity was 1.0; there was a complete left homonymic hemianopia, the fundus oculi was normal. On postoperative day 1, the visual functions were unchanged. Then there was a visual loss in the right eye that progressed to blindness 2 weeks after surgery. The authors consider variants of the pathogenesis of blindness: 1) development of foreign-body granuloma and surgical gauze-induced optochiasmal arachnoiditis; or 2) thrombosis of the aneurysm and thickening of its wall with compression of the right optic nerve. One-year follow-up revealed that the visual acuity of the right eye recovered (1.0), but the right optic disk became pale, the left optic disk was normal. A complete left homonymous hemianopia was unchanged. Spontaneous recovery of visual acuity makes the second hypothesis of the pathogenesis of blindness more preferable.

Adult↗
PubMedDate not supplied

[Neuro-ophthalmological symptoms in patients with para-clinoid aneurysms].

Neuroophthalmological symptoms in patients with large and giant paraclinoid aneurysms is presented, based on analysis of case histories, examination of visual functions, and evaluation of ophthalmoscopic picture. Variants of paraclinoid aneurysm location with respect to optic tract structures and the visual function are discussed. Methods of modulating the peripheral and central neurons of the optic tract are described.

Adolescent↗
PubMedDate not supplied

[Use of automatic static perimetry for the diagnosis of visual analyzer lesion in neurosurgical patients].

Emphasis is laid on how important to use clinical perimetry in the diagnosis of visual disturbances that are common in neurosurgical pathology. The authors compare kinetic perimetry with automatic static one. They consider the advantages of computerized perimetry used in patients with chiasmocellular diseases in visual analyzerlesion in the cerebral hemispheres, in congestive optic disks, anterior optic ischemic neuropathy, and visual dysfunctions.

Automation↗
PubMedDate not supplied

[Chiasmatic cavernoma].

Hemorrhage into the structures of the anterior visual pathway, apoplexy of the chiasma or optic nerves, is a rare pathology that can be caused by different pathological processes among which cavernous angioma and arteriovenous malformation are more frequently mentioned. The cause of chiasmatic apoplexy may be also hemorrhage into the tumor--chiasmatic glioma of blood penetration into the chiasma in pituitary apoplexy. The authors describe a rare case of chiasmatic apoplexy whose cause was chiasmatic cavernoma. In addition to acute visual disorders suggesting the involvement of the left optic nerve, chiasma, and left visual pathway, 23-year-old patient had endocrine disorders as polyuria, polydipsia, which first suggests craniopharyngioma and glioma of the chiasma. A capsule and hematomic clots were removed from the thickened left optic nerve and left chiasmatic half during surgery. Only did a morphological study involving immunohistochemical analysis permit identification of the process as hemorrhage from cavernous micromalformation with the formation of hematoma.

Adult↗