Effectiveness of combined glaucoma and cataract surgery with the use of a modified anti-glaucoma surgery

Purpose. To evaluate the clinical and functional results of a combined intervention – simultaneous cataract phacoemulsification (femtolaser assisted in some cases) and a developed partially fistulizing anti-glaucoma surgery in patients with primary open-angle glaucoma (POAG). Material and methods. 15 patients (45 eyes) aged 65-73 years with stage I-III POAG. The frequency of complications, dynamics of visual acuity's visual functions, and ophthalmotonus were analyzed before, during, and 6 months after surgery. Results. By the end of observation, the level of normalized IOP was defined in all patients, while in 78.6% of cases without drug correction and in 21.4% with the help of antihypertensive drugs (on average, 1.1±0.5). At the day of discharge from the hospital visual acuity after a simultaneous combined operation averaged 0.53±0.05, in the long term-0.77±0.06, while stabilization of glaucoma optical neuropathy after surgery occurred in 92.9%. Conclusion. A simultaneous combined intervention, including cataract phacoemulsification with a developed partially fistulizing anti-glaucoma operation, is an effective way to increase visual acuity, normalize ophthalmotonus and stabilize glaucoma optical neuropathy as well as reduce the drug load. Key words: cataract, glaucoma, surgical treatment, phacoemulsification, anti-glaucoma surgeries.

Design of a High-Power High-Efficiency Multi-Receiver Wireless Power Transfer System

This paper proposes a new control method to regulate the power flow into multiple receivers. This system consists of one transmitter controller and three receiver controllers. They work independently to decide the power distribution with their combined operation. The simulated and experimental models have been built, and the experimental results are in good agreement with the theoretical analysis results. The proposed method is robust, flexible, and generalizable, and can be employed under various wireless charging conditions.

Non-systematic review of the results of using the technique of secondary chords cutting in ischemic mitral insufficiency

<p>The article presents a non-systematic literature review aimed at studying the efficacy and safety of using the technique of resection of secondary chords in ischaemic mitral insufficiency. The review includes studies comparing the use of an isolated undersized ring annuloplasty and undersized ring annuloplasty with chordal cutting. <br />This study is an analysis of publications devoted to the surgical treatment of patients with ischaemic mitral insufficiency (type IIIb according to A. Carpentier classification). Intervention on the subvalvular structures was of interest, particularly the use of a chordal cutting technique in combination with undersized ring annuloplasty versus isolated undersized ring annuloplasty.<br />The Patient Intervention Comparison Outcome (PICO) strategy was used to find articles. During the initial search, 72 articles were selected, of which 36 articles corresponded to the purpose of the search. After analysing the headings and abstracts, 14 articles were selected according to the inclusion criteria. Full-text copies were obtained for all of them. The review design included retrospective cohort studies. Articles in which the assessment of the effectiveness and safety of the technique was not the main topic of the study were excluded from the analysis. Samples of three articles were formed after reviewing and analysing the texts.<br />The results of the study found that the implementation of the combined operation—undersized ring annuloplasty plus secondary chordal cutting—is significantly more effective in comparison with an isolated undersized ring annuloplasty.</p><p>Received 28 July 2020. Revised 6 October 2020. Accepted 7 October 2020.</p><p><strong>Funding:</strong> The study did not have sponsorship.</p><p><strong>Conflict of interest:</strong> Authors declare no conflict of interest.</p>