13 research outputs found
Acute kidney injury after primary total hip replacement
Surgical interventions that do not directly affect the urinary system can cause excretory dysfunction of kidneys. The aim. To establish the prevalence, risk factors and clinical significance of acute kidney injury after primary hip replacement performed in the clinic of the Irkutsk Scientific Centre of Surgery and Traumatology. Materials and methods. We carried out a retrospective analysis of the case histories of 109 patients who underwent primary total hip replacement under conditions of subarachnoid anesthesia in the clinic of the Irkutsk Scientific Centre of Surgery and Traumatology in 2021. Results. Postoperative changes in serum creatinine in 8 patients of the study group met the KDIGO (The Kidney Disease: Improving Global Outcomes) criteria for acute kidney injury. Initial indicators of renal excretory function in the subgroup with acute kidney injury were not different from those in the entire group. Statistically significant correlation was established between acute kidney injury and indicators of oxygen-carrying capacity of blood β initial and minimal postoperative hemoglobin concentration. Acute kidney injury in patients of the study group had a minimal effect on the clinical course of the early postoperative period. None of the patients required renal replacement therapy, re-transfer from the specialized unit to the intensive care unit or any specific treatment. The duration of postoperative stay of patients with acute kidney injury in the clinic did not increase. Conclusions. Acute kidney injury was detected in 7.3 Β % of patients who underwent primary total hip replacement. Risk factors for the development of postoperative acute kidney injury in Β patients of the study group included relatively low initial and Β minimal postoperative blood hemoglobin concentrations, which may indicate prerenal mechanism of acute kidney injury pathogenesis. Implementation of the main steps of the βrenal protocolβ in patients with initial glomerular filtration rate over 45 ml/min/1.73 m2 allows avoiding the development of severe clinically significant forms of postoperative acute kidney injury and complications associated with it in the early postoperative period of primary total hip replacement
Π Π°ΡΡΠ΅Ρ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΏΠΎΡΠΎΠΊΠ° Π² ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π΅
To analyze the elektrocyclone flow hydrodynamic computer calculation using the finite element method (FEM) is applied. The geometry of the model corresponds to the laboratoryΒ Β elektrocyclone. k-Ξ΅-turbulence model is used for the computation. The system of equations is solved by SIMPLE algorithm. The calculation results give a pattern of the flow velocity distribution and flow lines in different sections. There is conclusion based on the results about elektrocyclone flow hydrodynamic.ΠΠ»Ρ Π°Π½Π°Π»ΠΈΠ·Π° Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΏΠΎΡΠΎΠΊΠ° Π² ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΠΉ ΡΠ°ΡΡΠ΅Ρ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° ΠΊΠΎΠ½Π΅ΡΠ½ΡΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² (ΠΠΠ). ΠΠ΅ΠΎΠΌΠ΅ΡΡΠΈΡ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΠ΅Ρ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΠΎΠΌΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Ρ. ΠΠ»Ρ ΡΠ°ΡΡΠ΅ΡΠΎΠ² ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Π° k-Ξ΅-ΠΌΠΎΠ΄Π΅Π»Ρ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΠΈ. Π‘ΠΈΡΡΠ΅ΠΌΠ° ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ ΡΠ΅ΡΠ°Π΅ΡΡΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ° SIMPLE. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°ΡΡΠ΅ΡΠ° Π΄Π°ΡΡ ΠΊΠ°ΡΡΠΈΠ½Ρ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΊΠΎΡΠΎΡΡΠ΅ΠΉ ΠΏΠΎΡΠΎΠΊΠ° ΠΈ Π»ΠΈΠ½ΠΈΠΉ ΡΠΎΠΊΠ° Π² ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΡΡ
. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² Π΄Π΅Π»Π°Π΅ΡΡΡ Π²ΡΠ²ΠΎΠ΄ ΠΎ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ΅ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π°. ΠΡΡΠ²Π»Π΅Π½ ΡΠ°ΠΊΡ, ΡΡΠΎ Π² Π±ΡΠ½ΠΊΠ΅ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π° ΠΎΡΡΡΡΡΡΠ²ΡΠ΅Ρ Π²ΠΈΡ
ΡΠ΅Π²ΠΎΠ΅ Π΄Π²ΠΈΠΆΠ΅Π½ΠΈΠ΅, ΡΠ°ΠΊΠΆΠ΅ Π½Π΅Ρ ΡΠ°Π·Π²ΠΈΡΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΡΡΠ΅Π½ΠΎΠΊ, Π° Π½ΠΈΠΆΠ΅ Π²ΡΡ
Π»ΠΎΠΏΠ½ΠΎΠ³ΠΎ ΠΎΡΠ²Π΅ΡΡΡΠΈΡ ΡΠΊΠΎΡΠΎΡΡΡ ΠΏΠΎΡΠΎΠΊΠ° Π±Π»ΠΈΠ·ΠΊΠ° ΠΊ 0. ΠΡΠΎ Π±Π»Π°Π³ΠΎΠΏΡΠΈΡΡΠ½ΠΎ ΡΠΊΠ°Π·ΡΠ²Π°Π΅ΡΡΡ Π½Π° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΎΡΠΈΡΡΠΊΠΈ, Ρ. ΠΊ. Π²ΡΡ
ΠΎΠ΄ΡΡΠΈΠΉ ΡΠΈΡΡΡΠΉ Π³Π°Π· Π½Π΅ ΡΠ²Π»Π΅ΠΊΠ°Π΅Ρ Ρ ΡΠΎΠ±ΠΎΠΉ ΠΎΡΠ΅Π²ΡΠΈΠ΅ ΡΠ°ΡΡΠΈΡΡ. ΠΡΠ²ΠΎΠ΄Ρ: 1) Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ° ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π° ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΠΎΠΏΠΈΡΠ°Π½Π° Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΈ ΡΠ°ΡΡΡΠΈΡΠ°Π½Π° Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΠΠ; 2) ΠΏΠΎΡΠΎΠΊ Π² ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π΅, ΠΊΠ°ΠΊ ΠΈ ΠΎΠΆΠΈΠ΄Π°Π»ΠΎΡΡ, ΠΈΠΌΠ΅Π΅Ρ Π·Π°ΠΊΡΡΡΠ΅Π½Π½ΡΡ ΡΡΡΡΠΊΡΡΡΡ, ΡΠ³ΠΎΠ» Π·Π°ΠΊΡΡΡΠΊΠΈ Π·Π°Π²ΠΈΡΠΈΡ ΠΎΡ Π΄Π»ΠΈΠ½Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΠΉ Π·ΠΎΠ½Ρ; 3) ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΡ Π±ΡΠ½ΠΊΠ΅ΡΠ° ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅Ρ Π²ΡΡ
ΠΎΠ΄ ΠΎΡΠΈΡΠ΅Π½Π½ΠΎΠ³ΠΎ Π³Π°Π·Π° Π±Π΅Π· Π²ΠΎΠ²Π»Π΅ΡΠ΅Π½ΠΈΡ Π² Π½Π΅Π³ΠΎ ΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΡ
ΡΠ°ΡΡΠΈΡ
Grounding device for electrical networks and electrical installations in the Arctic regions
Elektrocyclone hydrodynamic flow computation
ΠΠ»Ρ Π°Π½Π°Π»ΠΈΠ·Π° Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΏΠΎΡΠΎΠΊΠ° Π² ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΠΉ ΡΠ°ΡΡΠ΅Ρ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° ΠΊΠΎΠ½Π΅ΡΠ½ΡΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² (ΠΠΠ). ΠΠ΅ΠΎΠΌΠ΅ΡΡΠΈΡ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΠ΅Ρ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΠΎΠΌΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Ρ. ΠΠ»Ρ ΡΠ°ΡΡΠ΅ΡΠΎΠ² ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Π° k-Ξ΅-ΠΌΠΎΠ΄Π΅Π»Ρ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΠΈ. Π‘ΠΈΡΡΠ΅ΠΌΠ° ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ ΡΠ΅ΡΠ°Π΅ΡΡΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ° SIMPLE. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°ΡΡΠ΅ΡΠ° Π΄Π°ΡΡ ΠΊΠ°ΡΡΠΈΠ½Ρ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΊΠΎΡΠΎΡΡΠ΅ΠΉ ΠΏΠΎΡΠΎΠΊΠ° ΠΈ Π»ΠΈΠ½ΠΈΠΉ ΡΠΎΠΊΠ° Π² ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΡΡ
. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² Π΄Π΅Π»Π°Π΅ΡΡΡ Π²ΡΠ²ΠΎΠ΄ ΠΎ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ΅ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π°. ΠΡΡΠ²Π»Π΅Π½ ΡΠ°ΠΊΡ, ΡΡΠΎ Π² Π±ΡΠ½ΠΊΠ΅ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π° ΠΎΡΡΡΡΡΡΠ²ΡΠ΅Ρ Π²ΠΈΡ
ΡΠ΅Π²ΠΎΠ΅ Π΄Π²ΠΈΠΆΠ΅Π½ΠΈΠ΅, ΡΠ°ΠΊΠΆΠ΅ Π½Π΅Ρ ΡΠ°Π·Π²ΠΈΡΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΡΡΠ΅Π½ΠΎΠΊ, Π° Π½ΠΈΠΆΠ΅ Π²ΡΡ
Π»ΠΎΠΏΠ½ΠΎΠ³ΠΎ ΠΎΡΠ²Π΅ΡΡΡΠΈΡ ΡΠΊΠΎΡΠΎΡΡΡ ΠΏΠΎΡΠΎΠΊΠ° Π±Π»ΠΈΠ·ΠΊΠ° ΠΊ 0. ΠΡΠΎ Π±Π»Π°Π³ΠΎΠΏΡΠΈΡΡΠ½ΠΎ ΡΠΊΠ°Π·ΡΠ²Π°Π΅ΡΡΡ Π½Π° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΎΡΠΈΡΡΠΊΠΈ, Ρ. ΠΊ. Π²ΡΡ
ΠΎΠ΄ΡΡΠΈΠΉ ΡΠΈΡΡΡΠΉ Π³Π°Π· Π½Π΅ ΡΠ²Π»Π΅ΠΊΠ°Π΅Ρ Ρ ΡΠΎΠ±ΠΎΠΉ ΠΎΡΠ΅Π²ΡΠΈΠ΅ ΡΠ°ΡΡΠΈΡΡ. ΠΡΠ²ΠΎΠ΄Ρ: 1) Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ° ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π° ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΠΎΠΏΠΈΡΠ°Π½Π° Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΈ ΡΠ°ΡΡΡΠΈΡΠ°Π½Π° Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΠΠ; 2) ΠΏΠΎΡΠΎΠΊ Π² ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π΅, ΠΊΠ°ΠΊ ΠΈ ΠΎΠΆΠΈΠ΄Π°Π»ΠΎΡΡ, ΠΈΠΌΠ΅Π΅Ρ Π·Π°ΠΊΡΡΡΠ΅Π½Π½ΡΡ ΡΡΡΡΠΊΡΡΡΡ, ΡΠ³ΠΎΠ» Π·Π°ΠΊΡΡΡΠΊΠΈ Π·Π°Π²ΠΈΡΠΈΡ ΠΎΡ Π΄Π»ΠΈΠ½Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΠΉ Π·ΠΎΠ½Ρ; 3) ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΡ Π±ΡΠ½ΠΊΠ΅ΡΠ° ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅Ρ Π²ΡΡ
ΠΎΠ΄ ΠΎΡΠΈΡΠ΅Π½Π½ΠΎΠ³ΠΎ Π³Π°Π·Π° Π±Π΅Π· Π²ΠΎΠ²Π»Π΅ΡΠ΅Π½ΠΈΡ Π² Π½Π΅Π³ΠΎ ΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΡ
ΡΠ°ΡΡΠΈΡ.To analyze the elektrocyclone flow hydrodynamic computer calculation using the finite element method (FEM) is applied. The geometry of the model corresponds to the laboratory elektrocyclone. The k-Ξ΅-turbulence model is used for the computation. The system of equations is solved by the SIMPLE algorithm. The calculation results give a pattern of the flow velocity distribution and the flow lines in the different sections. There is conclusion based on the results about the elektrocyclone flow hydrodynamic. Is elicited the fact that in the bunker of an electrocyclone there is no whirl, also there is no developed current in the field of walls, and below an exhaust opening the speed of a stream is close to 0.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΏΡΠΈ ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΠΎΠΉ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠ΅ ΠΌΠΎΠ»ΠΎΠ΄ΡΡ
ΡΡΠ΅Π½ΡΡ
Π£ΡΠ€Π£ Π² ΡΠ°ΠΌΠΊΠ°Ρ
ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ ΡΠ°Π·Π²ΠΈΡΠΈΡ Π£ΡΠ€Π£
Elektrocyclone hydrodynamic flow computation
To analyze the elektrocyclone flow hydrodynamic computer calculation using the finite element method (FEM) is applied. The geometry of the model corresponds to the laboratory elektrocyclone. k-Ξ΅-turbulence model is used for the computation. The system of equations is solved by SIMPLE algorithm. The calculation results give a pattern of the flow velocity distribution and flow lines in different sections. There is conclusion based on the results about elektrocyclone flow hydrodynamic.ΠΠ»Ρ Π°Π½Π°Π»ΠΈΠ·Π° Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ ΠΏΠΎΡΠΎΠΊΠ° Π² ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π΅ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ½ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΡΠΉ ΡΠ°ΡΡΠ΅Ρ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° ΠΊΠΎΠ½Π΅ΡΠ½ΡΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² (ΠΠΠ). ΠΠ΅ΠΎΠΌΠ΅ΡΡΠΈΡ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΠ΅Ρ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΠΎΠΌΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Ρ. ΠΠ»Ρ ΡΠ°ΡΡΡΡΠΎΠ² ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Π° k-Ξ΅-ΠΌΠΎΠ΄Π΅Π»Ρ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΠΈ. Π‘ΠΈΡΡΠ΅ΠΌΠ° ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ ΡΠ΅ΡΠ°Π΅ΡΡΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ° SIMPLE. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°ΡΡΡΡΠ° Π΄Π°ΡΡ ΠΊΠ°ΡΡΠΈΠ½Ρ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΊΠΎΡΠΎΡΡΠ΅ΠΉ ΠΏΠΎΡΠΎΠΊΠ° ΠΈ Π»ΠΈΠ½ΠΈΠΉ ΡΠΎΠΊΠ° Π² ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΡΡ
. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² Π΄Π΅Π»Π°Π΅ΡΡΡ Π²ΡΠ²ΠΎΠ΄ ΠΎ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ΅ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠΊΠ»ΠΎΠ½Π°