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Surface metal single-atoms could be decorated with organic ligands with interesting catalytic behavior. Heterogeneous atomic catalysts, whose structure is elaborately controlled and the surface reaction is better understood, can be a paradigm with higher catalytic activity, selectivity, and durability and used in industrial applications.Today, endoscopic transcanal ear surgery with confident steps is becoming a practice. It will be used by the patient in repeated practice by the surgeon before being used in the patient. It is so important and popular in connection with this dissection work. Working on biomaterial sets itself several tasks training manual skills to work with an endoscope and an instrument in the middle ear, stage-by-stage training for performing specific interventions, detailed analysis and understanding of structures anatomy and topography. This article presents a step-by-step dissection algorithm with an analysis of the each area anatomical landmarks, like a prototype. Moreover, the course of dissection allows you to work out the performance of type I tympanoplasty.The article describes the clinical case of the cholesteatoma of the temporal bone pyramid, leading to a massive destruction of the surrounding structures. Attention is drawn to the importance of timely diagnosis of this pathology with the use of objective visualization methods to select the optimal surgical approach, which allows to completely remove this formation.This article describes a clinical case of exacerbation of chronic right-sided epimesotimpanitis, complicated by secondary otogenic purulent meningoencephalitis, an abscess of the right hemisphere of the cerebellum and septic thrombosis of the sigmoid sinus. This is a rare complication of chronic epimesotimpanitis. The article describes the dynamics of treatment and diagnostic justifies the optimal choice of personalized tactics of treatment measures in the hospital, as well as further observation of the patient in the conditions of outpatient health care.Numerous studies have shown that loss of smell is a serious symptom that requires careful differential diagnosis. There is convincing evidence that a violation of the sense of smell is not so much a sign of the pathology of the nasal cavity and paranasal sinuses, but it can be a manifestation of neurodegenerative diseases. Some patients with the identified SARS-CoV-2 virus have neurological symptoms. this website Most of them are not specific - headache, dizziness, fatigue, myalgia. A small percentage of patients with COVID-19 infection have convulsions, impaired consciousness, and the presence of 2019-NCoV RNA was found in the cerebrospinal fluid. Data on the development of new symptoms of the disease, in the form of anosmia and dysgeusia, are presented.The article presents a review of the literature on the treatment of acute sensorineural hearing loss, acoustic trauma in people exposed to impulse noise. Groups of the most used drugs for the pharmacological correction of hearing impairment in this pathology are present, such as glucocorticosteroids, antioxidants, nootropics, antihypoxants, and others, are covered. Particular attention is paid to use of drugs taking into account the main links of pathogenesis.The article deals with the basic theories of maze and labyrinth hydrops, which are often used in clinical practice for its diagnosis according to the world literature. Tonal threshold, suprathreshold audiometry, broadband thympanometry, ultrasound tests, test for determination of lateralization of loud sounds, dehydration test, extra-timbanical electrocochleography, method of registration of evoked vestibular myogenic potentials, study of vestibular function (video pulse test, caloric sample), CT of temporal bones with gadolinium, MRI, and other methods are considered. None of these study methods gives an accurate confirmation of the presence of maze hydrops. Only taking into account the history, complaints of the patient, clinical manifestations of the disease and a comprehensive evaluation of the results of all the above methods of study can we speak with confidence about hydropse.

To characterize methods of extraction of foreign bodies of maxillary sinuses, features of postoperative treatment of patients.

The experience of treatment of patients with maxillary sinuses foreign bodies in the clinic of ENT of PFSMU of St.Petersburg is presented. In 2019 124 patients undergo treatment of maxillary sinus foreign bodies in our clinic. All surgeries are done by endoscopic endonasal method, mostly via inferior nasal passage. Clinical case of maxillary sinus foreign body removal is presented.

Almost any kind of foreign body can be removed from the maxillary sinus endoscopically through the nasal cavity. The most reliable method to diagnose foreign body is computed tomography. In most cases local antibacterial therapy is enough in postoperative period.

Almost any kind of foreign body can be removed from the maxillary sinus endoscopically through the nasal cavity. The most reliable method to diagnose foreign body is computed tomography. In most cases local antibacterial therapy is enough in postoperative period.The object of the clinical research was 367 patients after rhinoplasty. All patients before the operation fill in a special questionnaire, allowing to evaluate quantify the signs of dysmorphophobia. Patients with low index of dysmorphophobia (within 5-6 points) adequately estimated the result of the operation because their opinion coincided with the opinion of the doctor and in some cases they didn't notice even insignificant defects the doctor saw. The total number of these results satisfying the patient and the doctor composed 93% (341 patients). The patients who attaches great importance to insignificant defect of their appearance the index of desmorphophobia was high (16 patients - the average index of dysmorphophobia - 15). Questionnaires containing questions that allows to expose the signs of dysmorphophobia may be useful in the time of selection of patients for plastic surgery, in particular rhinoplasty. According to the questionnaire worked out by us, the index of dysmorphophobia of 5 points and below allows to count up on an adequate evaluation.