516 research outputs found
Development of context training ideas for the organization of industrial training in college
ΠΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½Π° ΡΠ΅Π»Π΅ΡΠΎΠΎΠ±ΡΠ°Π·Π½ΠΎΡΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΊΠΎΠ½ΡΠ΅ΠΊΡΡΠ½ΠΎΠ³ΠΎ ΠΎΠ±ΡΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΡΡΠ΅Π½ΠΈΡ ΡΡΡΠ΄Π΅Π½ΡΠΎΠ² ΠΊΠΎΠ»Π»Π΅Π΄ΠΆΠ° Ρ ΡΠ΅Π»ΡΡ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈΡ
ΠΊΠΎΠΌΠΏΠ΅ΡΠ΅Π½ΡΠΈΠΉThe authors substantiate the advisability of using contextual learning technology for industrial training of college students in order to optimize the formation of their professional competence
Possibilities and features of zero-ischemia nephron-sparing surgery in localized kidney cancer
Kidney cancer (KCa) is one of the greatest challenges in oncological urology due to the increase in morbidity and mortality rates annually. In the treatment of KCa, preservation of renal function is an important objective, in addition to achieving oncological results. The article presents the experience of treatment of 175 KCa-patients of pT1a β T2aN0M0 stages, who underwent nephron-saving surgery (NSS) with preventive hemostatic sutures. Functional outcomes of NSS were studied in the groups without cross-linking (group 1; n = 150) and with cross-linking of the renal pedicle (group 2; n = 25). Kidney resection with prophylactic suturing has been shown to allow removal of a tumour of almost any localisation. By avoiding cross-linking of the renal pedicle during surgery, post-ischemic changes in the renal parenchyma are minimised. Thus, one month after surgery, the perfusion indexes in groups 1 & 2 were 45.2 Β± 3.0% vs 35.5 Β± 3.3%; renal indexes were 44.8 Β± 2.4% vs 39.1 Β± 1.4%; areas of the functioning parenchyma were 52.0 Β± 10.0% vs 35.0 Β± 9.0%, respectively
Synthis and Phisical And Chemical; Properties of SiO[2]-B[2]O[3] and SiO[2]-P[2]O[5] Thin Film Systems and Powders
The SiO[2]-B[2]O[3] and SiO[2]-P[2]O[5] films were synthesized by using film forming solutions having a P[2]O[5] content of up to 30% and B[2]O[3] up to 40%. Properties of the filmforming solutions and binary oxides were examined. The physical and chemical processes occurring in the solution during the heat treatment of films were examined. The conditions for producing films of different thicknesses were determined. The kinetic parameters were calculated
Prognosis of recurrent myocardial infarction based on shortliffe fuzzy models using the electrical characteristics of biologically active points
This report discusses the employment of the electrical characteristics of biologically active points (BAP) in the meridian of the heart to solve the task of prognosticating recurrence of myocardial infarctions during the rehabilitation period using fuzzy decision rule
Wireless power transfer in magnetic resonance imaging at a higher-order mode of a birdcage coil
Magnetic resonance imaging (MRI) is a crucial tool for medical visualization.
In many cases, performing a scanning procedure requires the use of additional
equipment, which can be powered by wires as well as via wireless power transfer
(WPT) or wireless energy harvesting. In this Letter, we propose a novel scheme
for WPT that uses a higher-order mode of the MRI scanner's birdcage coil for
energy transmission. In contrast to the existing WPT solutions, our approach
does not require additional transmitting coils. Compared to the energy
harvesting, the proposed method allows supplying significantly more power. We
perform numerical simulations demonstrating that one can use the fundamental
mode of the birdcage coil to perform a scanning procedure while transmitting
the energy to the receiver at a higher-order mode without any interference with
the scanning signal or violation of safety constraints, as guaranteed by the
mode structure of the birdcage. Also, we evaluate the specific absorption rate
along with the energy transfer efficiency and verify our numerical model by a
direct comparison with an experimental setup featuring a birdcage coil of a
1.5T MRI scanner.Comment: 6 pages, 5 figures + Supplementary Material 10 pages, 7 figure
ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΏΠΎΠ»ΠΈΡΠΎΡΠ±Π°ΡΠ° 80 Π² Π±ΠΈΠΎΡΠ°ΡΠΌΠ°ΡΠ΅Π²ΡΠΈΡΠ΅ΡΠΊΠΈΡ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠ°Ρ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΎΠΏΡΠΈΠΌΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΊΠΎΠ»ΠΎΡΠΈΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ
Objectives. We hereby describe an improvement of a previously developed quantification technique for polysorbate 80 in biopharmaceutical formulations (darbepoetin alfa and eculizumab) and report the validation of the new approach.Methods. Polysorbate was isolated from analyte samples by protein precipitation using an organic solvent, followed by supernatant evaporation in vacuum. Polysorbate was derivatized using a ferric thiocyanate reagent and extracted into an organic phase; the relevant optical density measurements were performed.Results. We established the optimal conditions for each step of the analysis procedure. The accuracy was 97β102% in the tested analytical range, the relative standard deviation did not exceed 5%, and the limit of quantification was 0.01 mg/mL.Conclusions. The reported approach is highly sensitive; polysorbate isolation and quantification do not depend on the matrix or, most importantly, the protein.Π¦Π΅Π»ΠΈ. Π Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π±ΠΎΡΠ΅ Π±ΡΠ»Π° ΡΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½Π° ΡΠ°Π½Π΅Π΅ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½Π°Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΏΠΎΠ»ΠΈΡΠΎΡΠ±Π°ΡΠ° 80 Π² Π±ΠΈΠΎΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠ°Ρ
(Π΄Π°ΡΠ±ΡΠΏΠΎΡΡΠΈΠ½ Π°Π»ΡΡΠ°, ΡΠΊΡΠ»ΠΈΠ·ΡΠΌΠ°Π±), Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π° Π΅Π΅ Π²Π°Π»ΠΈΠ΄Π°ΡΠΈΡ.ΠΠ΅ΡΠΎΠ΄Ρ. ΠΠΎΠ»ΠΈΡΠΎΡΠ±Π°Ρ ΠΈΠ·Π²Π»Π΅ΠΊΠ°Π»ΠΈ ΠΈΠ· ΠΏΡΠΎΠ±Ρ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΠ΅ΠΌ Π±Π΅Π»ΠΊΠ° ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΡΠ°ΡΡΠ²ΠΎΡΠΈΡΠ΅Π»Π΅ΠΌ, Π·Π°ΡΠ΅ΠΌ Π²ΡΠΏΠ°ΡΠΈΠ²Π°Π»ΠΈ ΡΡΠΏΠ΅ΡΠ½Π°ΡΠ°Π½Ρ Π² Π²Π°ΠΊΡΡΠΌΠ΅. ΠΠΎΠ»ΠΈΡΠΎΡΠ±Π°Ρ Π΄Π΅ΡΠΈΠ²Π°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π»ΠΈ ΠΎΠΏΡΠΈΠΌΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌ ΠΆΠ΅Π»Π΅Π·ΠΎβΡΠΈΠΎΡΠΈΠ°Π½Π°ΡΠ½ΡΠΌ ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠΌ; Π΄Π΅ΡΠΈΠ²Π°Ρ ΡΠΊΡΡΡΠ°Π³ΠΈΡΠΎΠ²Π°Π»ΠΈ Π² ΡΠ»ΠΎΠΉ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ°ΡΡΠ²ΠΎΡΠΈΡΠ΅Π»Ρ ΠΈ ΠΈΠ·ΠΌΠ΅ΡΡΠ»ΠΈ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΡΡ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΡ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΡΠ»ΠΈ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ Π΄Π»Ρ ΠΊΠ°ΠΆΠ΄ΠΎΠΉ ΡΡΠ°Π΄ΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ. ΠΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎΡΡΡ Π½Π°Ρ
ΠΎΠ΄ΠΈΡΡΡ Π² Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ 97β102%, ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΡΡΠ°Π½Π΄Π°ΡΡΠ½ΠΎΠ΅ ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠ΅ ΡΠΎΡΡΠ°Π²Π»ΡΠ΅Ρ Π½Π΅ Π±ΠΎΠ»Π΅Π΅ 5%, ΠΏΡΠ΅Π΄Π΅Π» ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ 0.01 ΠΌΠ³/ΠΌΠ».ΠΡΠ²ΠΎΠ΄Ρ. ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½Π°Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΈΠΌΠ΅Π΅Ρ Π²ΡΡΠΎΠΊΡΡ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΡ. ΠΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΠ΅ ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΏΠΎΠ»ΠΈΡΠΎΡΠ±Π°ΡΠ° Π½Π΅ Π·Π°Π²ΠΈΡΡΡ ΠΎΡ ΠΌΠ°ΡΡΠΈΠΊΡΠ° ΠΏΡΠΎΠ±Ρ β ΠΏΡΠ΅ΠΆΠ΄Π΅ Π²ΡΠ΅Π³ΠΎ, ΠΎΡ ΠΏΡΠΈΡΡΡΡΡΠ²ΡΡΡΠ΅Π³ΠΎ Π±Π΅Π»ΠΊΠ°
Peculiarities of construction of local self-government models in the modern slavic states
The peculiarities of construction of local self-government models in the modern Slavic States, which in the 90-s of XX century abandoned the socialist path of development, β have been examined. The aim of the study is to identify specific features and common approaches to the construction of local self-government system, based on the analysis of the practice of local self-government institutions of the Slavic States and the provisions of the Constitutions of the Republic of Serbia, the Republic of Poland, the Czech Republic, the Slovak Republic, Ukraine, the Republic of Croatia, the Russian Federation, etc.The organizational forms of local self-government and the particularities of the implementation of local issues, taking into account national traditions, β have been analyzed. In this connection, the majority of modern Slavic States recognizes and guarantees local self-government as the most important constitutional value and institution of the peopleβs right. It has been determined, that the list of issues of local importance mainly affects the areas of urban planning, municipal activities, culture, sports, social protection of the population and children, preschool education, healthcare, approval of municipal programs of economic development, local budgets, taxes and fees, the appointment of local referendums, etc. However, there there is a number of countries, in which local government issues are not specified in the Constitution. Among the criteria for the difference between the models of local self-government are the following: the list of issues of local importance and competence of local self-government bodies; relations with public authorities and the degree of freedom of local self-government from the state; territorial organization of local self-government, etc.It has been concluded, that the most common form of interaction between public authorities and local self-government for the Slavic states at the beginning of the XXI century, was the Zemstvo-state model, that takes into account the mutual interests of a sovereign power and the population, living within certain territorial communities
Correlation Time-of-flight Spectrometry of Ultracold Neutrons
The fearures of the correlation method used in time-of-flight spectrometry of
ultracold neutrons are analyzed. The time-of-flight spectrometer for the energy
range of ultracold neutrons is described, and results of its testing by
measuring spectra of neutrons passing through interference filters are
presented.Comment: 16 pages, 5 figure
ΠΡΠ΅Π²Π΅Π½ΡΠΈΠ²Π½ΡΠΉ ΡΠΎΠ² ΠΏΡΠΈ Π»Π°ΠΏΠ°ΡΠΎΡΠΊΠΎΠΏΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Π·Π΅ΠΊΡΠΈΠΈ ΠΏΠΎΡΠΊΠΈ Π±Π΅Π· ΠΈΡΠ΅ΠΌΠΈΠΈ. ΠΠΏΠΈΡΠ°Π½ΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΠΠ ΠΈΠΌ. Π‘.Π. ΠΠΎΡΠΊΠΈΠ½Π°
Background. Radical removal of the tumor while maximizing sparing of the renal function are the main goals of the partial nephrectomy. Shortening of the warm ischemia time is one of the best ways to achieve good functional results of the surgery. Aim. To present our technique of non-ischemic laparoscopic kidney resection with preventive suturing around the tumor.Materials and methods. Before tumor resection, sutures are placed around tumor spaced by 1 cm with moderate tension. Enucleoresection is performed between tumor and preplaced sutures in visually healthy plane. 30 patients underwent this technique.Results. Median tumor size was 3.6 (1.5β7.2) cm. All patients had negative surgical margin. Warm ischemia was needed in 8 (26.7 %) patients with a median time of 9 minutes. Median operative time was 115 (65β185) minutes. There were no intra or postoperative complications. Trifecta was achieved in all patients (100 %).Conclusion. This technique allows to perform the surgery in non-ischemic fashion, decrease bleeding and improve visualization of the resection field and achieve superior oncologic and functional results.ΠΠ²Π΅Π΄Π΅Π½ΠΈΠ΅. ΠΡΠ½ΠΎΠ²Π½ΡΠ΅ ΡΠ΅Π»ΠΈ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ ΡΠ΅Π·Π΅ΠΊΡΠΈΠΈ ΠΏΠΎΡΠΊΠΈ Ρ ΠΎΠΏΡΡ
ΠΎΠ»ΡΡ β ΡΠ°Π΄ΠΈΠΊΠ°Π»ΡΠ½ΠΎΠ΅ ΡΠ΄Π°Π»Π΅Π½ΠΈΠ΅ Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΠ΅ ΡΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΠ΅ ΡΡΠ½ΠΊΡΠΈΠΈ ΠΏΠΎΡΠΊΠΈ. Π£ΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΠ΅ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΡΠ΅ΠΏΠ»ΠΎΠ²ΠΎΠΉ ΠΈΡΠ΅ΠΌΠΈΠΈ ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΎΠ΄Π½ΠΈΠΌ ΠΈΠ· ΡΠΏΠΎΡΠΎΠ±ΠΎΠ² Π΄ΠΎΡΡΠΈΠΆΠ΅Π½ΠΈΡ Π»ΡΡΡΠ΅Π³ΠΎ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ° ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΠΈΡΡ ΠΎΠΏΠΈΡΠ°Π½ΠΈΠ΅ Π»Π°ΠΏΠ°ΡΠΎΡΠΊΠΎΠΏΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Π·Π΅ΠΊΡΠΈΠΈ ΠΏΠΎΡΠΊΠΈ Π±Π΅Π· ΠΈΡΠ΅ΠΌΠΈΠΈ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΠΏΡΠ΅Π²Π΅Π½ΡΠΈΠ²Π½ΡΡ
Π³Π΅ΠΌΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠ².ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΠ΅ΡΠ΅Π΄ ΡΠ΅Π·Π΅ΠΊΡΠΈΠ΅ΠΉ Π½Π΅ΠΏΠΎΡΡΠ΅Π΄ΡΡΠ²Π΅Π½Π½ΠΎ Π²ΠΎΠΊΡΡΠ³ ΠΎΠΏΡΡ
ΠΎΠ»ΠΈ ΡΠ΅ΡΠ΅Π· ΠΊΠ°ΠΆΠ΄ΡΠΉ ΡΠ°Π½ΡΠΈΠΌΠ΅ΡΡ Π½Π°ΠΊΠ»Π°Π΄ΡΠ²Π°ΡΡ ΠΏΡΠ΅Π²Π΅Π½ΡΠΈΠ²Π½ΡΠ΅ ΡΠ²Ρ, ΡΠΎΠ·Π΄Π°Π²Π°Ρ ΡΠΌΠ΅ΡΠ΅Π½Π½ΠΎΠ΅ Π½Π°ΡΡΠΆΠ΅Π½ΠΈΠ΅. ΠΡΠΏΠΎΠ»Π½ΡΡΡ ΡΠ½ΡΠΊΠ»Π΅ΠΎΡΠ΅Π·Π΅ΠΊΡΠΈΡ ΠΎΠΏΡΡ
ΠΎΠ»ΠΈ ΠΌΠ΅ΠΆΠ΄Ρ ΠΎΠΏΡΡ
ΠΎΠ»ΡΡ ΠΈ Π½Π°Π»ΠΎΠΆΠ΅Π½Π½ΡΠΌΠΈ ΡΠ²Π°ΠΌΠΈ Π² ΡΠ»ΠΎΠ΅ Π²ΠΈΠ·ΡΠ°Π»ΡΠ½ΠΎ Π½Π΅ΠΈΠ·ΠΌΠ΅Π½Π΅Π½Π½ΠΎΠΉ ΠΏΠΎΡΠ΅ΡΠ½ΠΎΠΉ ΡΠΊΠ°Π½ΠΈ. ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½Π°Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π° 30 ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ°ΠΌ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. Π‘ΡΠ΅Π΄Π½ΠΈΠΉ ΡΠ°Π·ΠΌΠ΅Ρ ΠΎΠΏΡΡ
ΠΎΠ»ΠΈ ΡΠΎΡΡΠ°Π²ΠΈΠ» 3,6 (1,5β7,2) ΡΠΌ. Π£ Π²ΡΠ΅Ρ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Π±ΡΠ» ΠΊΠΎΠ½ΡΡΠ°ΡΠΈΡΠΎΠ²Π°Π½ ΠΎΡΡΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΡΠΉ Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΊΡΠ°ΠΉ. ΠΠ΅ΡΠ΅ΠΆΠ°ΡΠΈΠ΅ ΠΏΠΎΡΠ΅ΡΠ½ΠΎΠΉ Π½ΠΎΠΆΠΊΠΈ ΠΏΠΎΡΡΠ΅Π±ΠΎΠ²Π°Π»ΠΎΡΡ 8 (26,7 %) ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ°ΠΌ ΠΏΡΠΈ ΡΡΠ΅Π΄Π½Π΅ΠΌ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΡΠ΅ΠΏΠ»ΠΎΠ²ΠΎΠΉ ΠΈΡΠ΅ΠΌΠΈΠΈ 9 ΠΌΠΈΠ½. Π‘ΡΠ΅Π΄Π½ΡΡ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΡ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ β 115 (65β185) ΠΌΠΈΠ½. ΠΠ½ΡΡΠ°ΠΈ ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ Π½Π΅ ΠΎΡΠΌΠ΅ΡΠ΅Π½ΠΎ. Π’ΡΠΈΡΠ΅ΠΊΡΠ° Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΠ° Ρ Π²ΡΠ΅Ρ
30 (100 %) ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ².ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅. ΠΠ°Π½Π½Π°Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΡΠ½ΠΈΠ·ΠΈΡΡ Π²Π΅ΡΠΎΡΡΠ½ΠΎΡΡΡ ΡΠ΅ΠΏΠ»ΠΎΠ²ΠΎΠΉ ΠΈΡΠ΅ΠΌΠΈΠΈ, ΡΠ»ΡΡΡΠΈΡΡ Π²ΠΈΠ·ΡΠ°Π»ΠΈΠ·Π°ΡΠΈΡ Π²ΠΎ Π²ΡΠ΅ΠΌΡ ΡΠ΅Π·Π΅ΠΊΡΠΈΠΈ ΠΈ Π΄ΠΎΡΡΠΈΡΡ Π»ΡΡΡΠΈΡ
ΠΎΠ½ΠΊΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ²
Ultra-Mini Percutaneous Nephrolithotripsy and Retrograde Intrarenal Surgery in Treatment of Less than 2 cm Kidney Stones: Comparative Efficacy and Safety
Background. Renal stones of β€ 2cm size occur most commonly, with several treatment options currently available that include remote shockwave lithotripsy, percutaneous nephrolithotripsy (PCNL) and retrograde intrarenal surgery (RIRS). The choice of treatment for β€ 2 cm kidney stones remains a relevant and hotly debated issue.Aim. A study of the efficacy, safety, advantages and disadvantages of ultra-mini percutaneous nephrolithotripsy (ultra-mini PCNL) and retrograde intrarenal surgery (RIRS) in treatment of β€ 2 cm kidney stones.Materials and methods. Treatment outcomes in urology patients of the Botkin Hospital were analysed retrospectively for years 2017β2022. The patients were divided between cohorts: cohort 1 consisted of patients who underwent ultra-mini PCNL; cohort 2 included 41 patients with RIRS.Results and discussion. The incidence of complete stone absence on the day after surgery was significantly higher in cohort 1 (39; 92.8 %) vs. 2 (33; 80.4 %). Mean operation time was significantly less in cohort 1 (55 [30β80] min) vs. 2 (78 [30β125] min). Mean hospital stay did not differ significantly between the cohorts: 3 (1β5) vs. 2.8 (2β4) days in cohorts 1 and 2, respectively. Haematuria was statistically more severe in cohort 1 (7 cases; 16.6 %) vs. 2 (4 cases; 9.7 %); mean postoperative haemoglobin decrease was also significantly higher in cohort 1 (11.6) vs. 2 (6.4 g/L).Conclusion. Both ultra-mini PCNL and RIRS are effective, safe and complementary procedures in treatment for β€2 cm renal stones. Ultra-mini PCNL is more effective over RIRS in terms of single-intervention complete stone removal and shorter operation time, whereas the overall complications rate did not significantly differ between cohorts
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