50 research outputs found
Π ΠΎΡΡΠΈΠΉΡΠΊΠΈΠΉ ΠΎΠΏΡΡ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΠΎΠΉ ΡΠΊΡΡΡΠ°ΠΊΠΎΡΠΏΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠΈ
Relevance. The present time can be called a period of accumulation of experience of national health systems in different countries of the world in the application of transport extracorporeal membrane oxygenation (ECMO) technology at the pre- and inter-hospital stages of evacuation of patients to specialized ECMO-therapy centers. The role of such centers is to provide timely advice and, if necessary, perform inter-hospital evacuation.Material and methods. The study summarized and analyzed with the help of the national register βRosECMOβ the own experience of 13 hospitals in the Russian Federation, who performed 68 inter-hospital evacuations under ECMO conditions by different modes of transport in patients of different age groups with symptoms of circulatory and respiratory failure. The following parameters were evaluated: characteristics of transport ECMO, clinical manifestations of potentially negative effects of transport, hospital survival, as well as the effect of experience (less and more than 10 cases of transport ECMO) of the presented clinics on the difference in the results obtained.Results. Connecting patients to the ECMO device reduces the likelihood of death on the SOFA and APACHE IV scales by 1.2 times (p <0.0001) and 1.4 times (p<0.0001), respectively. Despite the absence of deaths during inter-hospital transportation of patients under ECMO conditions, 14.93% of patients died within 3 days from the moment of their execution, without a significant difference in clinics with different practical experience. The overall hospital survival rate of ECMO transport scenarios in all 13 clinics of the Russian Federation was comparable to the data of the international register 48.52% versus 48.81%, at the same time it was significantly lower (1.3 times) in the group of clinics with less clinical experience 40% versus 52.08% (p<0.0001).Conclusion. The results of the first stage of the study we obtained indicate the prospects of using the method of extracorporeal membrane oxygenation at the stage of inter-hospital evacuation, due to the effective stabilization of the patientβs condition and a significant reduction in the risks of the likelihood of death. Clinics with less clinical experience showed significantly worse results of hospital survival of patients who underwent inter-hospital transportation under conditions of extracorporeal membrane oxygenation compared to clinics with more clinical experience, which can be a significant argument in adopting a model for the development of specialized regional centers for extracorporeal membrane oxygenation. The experience accumulated over the past six years and the analysis of new data from the register of transport cases of extracorporeal membrane oxygenation of the national healthcare system will make it possible to formulate the correct trajectory for the development of the method of extracorporeal membrane oxygenation and its application, including at the stage of pre- and inter-hospital evacuations of patients.ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ. ΠΠ°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ ΠΌΠΎΠΆΠ½ΠΎ Π½Π°Π·Π²Π°ΡΡ ΠΏΠ΅ΡΠΈΠΎΠ΄ΠΎΠΌ Π½Π°ΠΊΠΎΠΏΠ»Π΅Π½ΠΈΡ ΠΎΠΏΡΡΠ° Π½Π°ΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ Π·Π΄ΡΠ°Π²ΠΎΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΡ Π² ΡΠ°Π·Π½ΡΡ
ΡΡΡΠ°Π½Π°Ρ
ΠΌΠΈΡΠ° ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΠΎΠΉ ΡΠΊΡΡΡΠ°ΠΊΠΎΡΠΏΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠΈ (ΠΠΠΠ) Π½Π° Π΄ΠΎΠΈ ΠΌΠ΅ΠΆΠ³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΠΎΠΌ ΡΡΠ°ΠΏΠ°Ρ
ΡΠ²Π°ΠΊΡΠ°ΡΠΈΠΈ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Π² ΡΠΏΠ΅ΡΠΈΠ°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΡΠ΅Π½ΡΡΡ ΠΠΠΠ-ΡΠ΅ΡΠ°ΠΏΠΈΠΈ. Π ΠΎΠ»Ρ ΠΏΠΎΠ΄ΠΎΠ±Π½ΡΡ
ΡΠ΅Π½ΡΡΠΎΠ² Π·Π°ΠΊΠ»ΡΡΠ°Π΅ΡΡΡ Π² ΡΠ²ΠΎΠ΅Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΌ ΠΎΠΊΠ°Π·Π°Π½ΠΈΠΈ ΠΊΠΎΠ½ΡΡΠ»ΡΡΠ°ΡΠΈΠ²Π½ΠΎΠΉ ΠΏΠΎΠΌΠΎΡΠΈ, Π° ΠΏΡΠΈ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ ΠΈ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΌΠ΅ΠΆΠ³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΠΎΠΉ ΡΠ²Π°ΠΊΡΠ°ΡΠΈΠΈ.ΠΠ°ΡΠ΅ΡΠΈΠ°Π» ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. Π ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΎΠ±ΠΎΠ±ΡΠ΅Π½ ΠΈ ΠΏΡΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½ Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π½Π°ΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π³ΠΈΡΡΡΠ° Β«Π ΠΎΡΠΠΠΠΒ» ΡΠΎΠ±ΡΡΠ²Π΅Π½Π½ΡΠΉ ΠΎΠΏΡΡ 13 ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠΎΠ² Π Π€, Π²ΡΠΏΠΎΠ»Π½ΠΈΠ²ΡΠΈΡ
68 ΠΌΠ΅ΠΆΠ³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΡΡ
ΡΠ²Π°ΠΊΡΠ°ΡΠΈΠΉ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΠΠΠ ΡΠ°Π·Π½ΡΠΌΠΈ Π²ΠΈΠ΄Π°ΠΌΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ° Ρ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΡΠ°Π·Π½ΡΡ
Π²ΠΎΠ·ΡΠ°ΡΡΠ½ΡΡ
Π³ΡΡΠΏΠΏ Ρ ΡΠ²Π»Π΅Π½ΠΈΡΠΌΠΈ ΡΠΈΡΠΊΡΠ»ΡΡΠΎΡΠ½ΠΎΠΉ ΠΈ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΠΎΠΉ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎΡΡΠΈ. ΠΡΠ»ΠΈ ΠΎΡΠ΅Π½Π΅Π½Ρ: Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΠΠΠ, ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΡ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎ Π½Π΅Π³Π°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΠΈ, Π³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½Π°Ρ Π²ΡΠΆΠΈΠ²Π°Π΅ΠΌΠΎΡΡΡ, Π° ΡΠ°ΠΊΠΆΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΎΠΏΡΡΠ° (ΠΌΠ΅Π½ΡΡΠ΅ ΠΈ Π±ΠΎΠ»ΡΡΠ΅ 10 ΡΠ»ΡΡΠ°Π΅Π² ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΠΎΠ³ΠΎ ΠΠΠΠ) ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½ΡΡ
ΠΊΠ»ΠΈΠ½ΠΈΠΊ Π½Π° ΡΠ°Π·Π½ΠΈΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ².Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠΎΠ΄ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΠΊ Π°ΠΏΠΏΠ°ΡΠ°ΡΡ ΠΠΠΠ ΡΠ½ΠΈΠΆΠ°Π΅Ρ Π²Π΅ΡΠΎΡΡΠ½ΠΎΡΡΡ ΡΠΌΠ΅ΡΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΈΡΡ
ΠΎΠ΄Π° ΠΏΠΎ ΡΠΊΠ°Π»Π°ΠΌ SOFA ΠΈ APACHE IV Π² 1,2 ΡΠ°Π·Π° (p<0,0001) ΠΈ 1,4 ΡΠ°Π·Π° (p<0,0001) ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ. ΠΠ΅ΡΠΌΠΎΡΡΡ Π½Π° ΠΎΡΡΡΡΡΡΠ²ΠΈΠ΅ ΡΠΌΠ΅ΡΡΠ΅Π»ΡΠ½ΡΡ
ΠΈΡΡ
ΠΎΠ΄ΠΎΠ² Π² Ρ
ΠΎΠ΄Π΅ ΠΎΡΡΡΠ΅ΡΡΠ²Π»Π΅Π½ΠΈΡ ΠΌΠ΅ΠΆΠ³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΡΡ
ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΎΠΊ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΠΠΠ, Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ 3 ΡΡΡΠΎΠΊ ΠΎΡ ΠΌΠΎΠΌΠ΅Π½ΡΠ° ΠΈΡ
Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ ΡΠΌΠ΅ΡΠ»ΠΈ 14,93% ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Π±Π΅Π· ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΉ ΡΠ°Π·Π½ΠΈΡΡ Π² ΠΊΠ»ΠΈΠ½ΠΈΠΊΠ°Ρ
Ρ ΡΠ°Π·Π½ΡΠΌ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΠΏΡΡΠΎΠΌ. ΠΠ±ΡΠ°Ρ Π³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½Π°Ρ Π²ΡΠΆΠΈΠ²Π°Π΅ΠΌΠΎΡΡΡ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΡΡ
ΡΡΠ΅Π½Π°ΡΠΈΠ΅Π² ΠΠΠΠ Π²ΠΎ Π²ΡΠ΅Ρ
13 ΠΊΠ»ΠΈΠ½ΠΈΠΊΠ°Ρ
Π Π€ ΠΎΠΊΠ°Π·Π°Π»Π°ΡΡ ΡΠΎΠΏΠΎΡΡΠ°Π²ΠΈΠΌΠ° Ρ Π΄Π°Π½Π½ΡΠΌΠΈ ΠΌΠ΅ΠΆΠ΄ΡΠ½Π°ΡΠΎΠ΄Π½ΠΎΠ³ΠΎ ΡΠ΅Π³ΠΈΡΡΡΠ° 48,52% ΠΏΡΠΎΡΠΈΠ² 48,81%, Π² ΡΠΎ ΠΆΠ΅ Π²ΡΠ΅ΠΌΡ Π±ΡΠ»Π° Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎ Π½ΠΈΠΆΠ΅ (Π² 1,3 ΡΠ°Π·Π°) Π² Π³ΡΡΠΏΠΏΠ΅ ΠΊΠ»ΠΈΠ½ΠΈΠΊ Ρ ΠΌΠ΅Π½ΡΡΠΈΠΌ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΠΏΡΡΠΎΠΌ 40% ΠΏΡΠΎΡΠΈΠ² 52,08% (p<0,0001).ΠΡΠ²ΠΎΠ΄Ρ. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π½Π°ΠΌΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΏΠ΅ΡΠ²ΠΎΠ³ΠΎ ΡΡΠ°ΠΏΠ° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π³ΠΎΠ²ΠΎΡΡΡ ΠΎ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄Π° ΡΠΊΡΡΡΠ°ΠΊΠΎΡΠΏΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠΈ Π½Π° ΡΡΠ°ΠΏΠ΅ ΠΌΠ΅ΠΆΠ³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΠΎΠΉ ΡΠ²Π°ΠΊΡΠ°ΡΠΈΠΈ, Π·Π° ΡΡΠ΅Ρ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° ΠΈ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΡ ΡΠΈΡΠΊΠΎΠ² Π²Π΅ΡΠΎΡΡΠ½ΠΎΡΡΠΈ Π»Π΅ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΈΡΡ
ΠΎΠ΄Π°. ΠΠ»ΠΈΠ½ΠΈΠΊΠΈ Ρ ΠΌΠ΅Π½ΡΡΠΈΠΌ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΠΏΡΡΠΎΠΌ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎ Ρ
ΡΠ΄ΡΠΈΠ΅ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ Π³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΠΎΠΉ Π²ΡΠΆΠΈΠ²Π°Π΅ΠΌΠΎΡΡΠΈ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ², ΠΊΠΎΡΠΎΡΡΠΌ Π²ΡΠΏΠΎΠ»Π½ΡΠ»ΠΈ ΠΌΠ΅ΠΆΠ³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΡΡ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠΈΡΠΎΠ²ΠΊΡ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΡΠΊΡΡΡΠ°ΠΊΠΎΡΠΏΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠΈ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠ°ΠΌΠΈ Ρ Π±ΠΎΠ»ΡΡΠΈΠΌ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΠΏΡΡΠΎΠΌ, ΡΡΠΎ ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ Π·Π½Π°ΡΠΈΠΌΡΠΌ Π°ΡΠ³ΡΠΌΠ΅Π½ΡΠΎΠΌ Π² ΠΏΡΠΈΠ½ΡΡΠΈΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΡΠΏΠ΅ΡΠΈΠ°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠ΅Π³ΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΡΠ΅Π½ΡΡΠΎΠ² ΡΠΊΡΡΡΠ°ΠΊΠΎΡΠΏΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠΈ. ΠΠ°ΠΊΠΎΠΏΠ»Π΅Π½Π½ΡΠΉ Π·Π° ΠΏΡΠΎΡΠ΅Π΄ΡΠΈΠ΅ ΡΠ΅ΡΡΡ Π»Π΅Ρ ΠΎΠΏΡΡ ΠΈ Π°Π½Π°Π»ΠΈΠ· Π½ΠΎΠ²ΡΡ
Π΄Π°Π½Π½ΡΡ
ΡΠ΅Π³ΠΈΡΡΡΠ° ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΡΡ
ΡΠ»ΡΡΠ°Π΅Π² ΡΠΊΡΡΡΠ°ΠΊΠΎΡΠΏΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠΈ Π½Π°ΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ Π·Π΄ΡΠ°Π²ΠΎΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΡ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ ΡΡΠΎΡΠΌΡΠ»ΠΈΡΠΎΠ²Π°ΡΡ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΡΡ ΡΡΠ°Π΅ΠΊΡΠΎΡΠΈΡ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΌΠ΅ΡΠΎΠ΄Π° ΡΠΊΡΡΡΠ°ΠΊΠΎΡΠΏΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Π½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠΈ ΠΈ Π΅Π³ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΡΠΎΠΌ ΡΠΈΡΠ»Π΅ Π½Π° ΡΡΠ°ΠΏΠ΅ Π΄ΠΎΠΈ ΠΌΠ΅ΠΆΠ³ΠΎΡΠΏΠΈΡΠ°Π»ΡΠ½ΡΡ
ΡΠ²Π°ΠΊΡΠ°ΡΠΈΠΉ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ²
Mathematical analysis of the motion of a rigid body in a compressible Navier-Stokes-Fourier fluid
International audienceWe study an initial and boundary value problem modelling the motion of a rigid body in a heat conducting gas. The solid is supposed to be a perfect thermal insulator. The gas is described by the compressible Navier-Stokes-Fourier equations, whereas the motion of the solid is governed by Newton's laws. The main results assert the existence of strong solutions, in an L p-L q setting, both locally in time and globally in time for small data. The proof is essentially using the maximal regularity property of associated linear systems. This property is checked by proving the R-sectoriality of the corresponding operators, which in turn is obtained by a perturbation method
The effect of dynamical compressive and shear strain on magnetic anisotropy in a low symmetry ferromagnetic film
Dynamical strain generated upon excitation of a metallic film by a femtosecond laser pulse may become a versatile tool enabling control of magnetic state of thin _lms and nanostructures via inverse magnetostriction on a picosecond time scale. Here we explore two alternative approaches to manipulate magnetocrystalline anisotropy and excite magnetization precession in a low-symmetry _lm of a magnetic metallic alloy galfenol (Fe,Ga) either by injecting picosecond strain pulse into it from a substrate or by generating dynamical strain of complex temporal profile in the film directly. In the former case we realize ultrafast excitation of magnetization dynamics solely by strain pulses. In the latter case optically-generated strain emerged abruptly in the film modifies its magnetocrystalline anisotropy, competing with heat-induced change of anisotropy parameters. We demonstrate that the optically-generated strain remains efficient for launching magnetization precession, when the heat-induced changes of anisotropy parameters do not trigger the precession anymore. We emphasize that in both approaches the ultrafast change of magnetic anisotropy mediating the precession excitation relies on mixed, compressive and shear, character of the dynamical strain, which emerges due to low-symmetry of the metallic film under study
Effect of magnetic anisotropy relaxation on laser-induced magnetization precession in thin galfenol films
The rate and pathways of relaxation of a magnetic medium to its equilibrium following excitation with intense and short laser pulses are the key ingredients of ultrafast optical control of spins. Here we study experimentally the evolution of the magnetization and magnetic anisotropy of thin films of a ferromagnetic metal galfenol (Fe0.81Ga0.19) resulting from excitation with a femtosecond laser pulse. From the temporal evolution of the hysteresis loops we deduce that the magnetization MS and magnetic anisotropy parameters K recover within a nanosecond, and the ratio between K and MS satisfies the thermal equilibrium's power law in the whole time range spanning from a few picoseconds to 3 nanoseconds. We further use the experimentally obtained relaxation times of MS and K to analyze the laser-induced precession and demonstrate how they contribute to its frequency evolution at the nanosecond timescale
Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure
We demonstrate spin pumping, i.e., the generation of a pure spin current by precessing magnetization, without the application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously launch the magnetization precession in each of two ferromagnetic layers of a galfenol-based spin valve and monitor the temporal evolution of the magnetizations. The spin currents generated by the precession cause a dynamic coupling of the two layers. This coupling has a dissipative character and is especially efficient when the precession frequencies in the two layers are in resonance, where coupled modes with strongly different decay rates are formed
Role of turbulence and electric fields in the formation of transport barriers and the establishment of improved confinement in tokamak plasmas through inter-machine comparison
Over the past decade new regimes of tokamak operation have been identified, whereby electrostatic and magnetic turbulence
responsible for anomalous transport, can be externally suppressed, leading to improved confinement. Although turbulence
measurements have been performed on many confinement devices, the insight gained from these experiments is relatively
limited. To make further progress in the understanding of plasma turbulence in relation to improved confinement and transport
barriers, an extensive experimental and theoretical research programme should be undertaken. The present INTAS project
investigates the correlations between on the one hand the occurrence of transport barriers and improved confinement in the
tokamaks TEXTOR & T-10 and Tore Supra as well as on the smaller-scale tokamaks FT-2, TUMAN-3M and CASTOR, and on
the other hand electric fields, modified magnetic shear and electrostatic and magnetic turbulence using advanced diagnostics with
high spatial and temporal resolution. This is done in a strongly coordinated way and exploiting the complementarity of TEXTOR
and T-10 and the backup potential of the other tokamaks, which together have all the relevant experimental tools and theoretical
expertise. Advanced theoretical models and numerical simulations are used to check the experimental results.ΠΠ° ΠΎΡΡΠ°Π½Π½Ρ Π΄Π΅ΡΡΡΡ ΡΠΎΠΊΡΠ² Π±ΡΠ»ΠΎ ΠΎΡΡΠΈΠΌΠ°Π½ΠΎ Π½ΠΎΠ²Ρ ΡΠ΅ΠΆΠΈΠΌΠΈ ΡΠΎΠ±ΠΎΡΠΈ ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΡΠ², Ρ ΡΠΊΠΈΡ
Π΅Π»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ½Π° Ρ ΠΌΠ°Π³Π½ΡΡΠ½Π°
ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΡΡΡΡ, Π²ΡΠ΄ΠΏΠΎΠ²ΡΠ΄Π°Π»ΡΠ½Π° Π·Π° Π°Π½ΠΎΠΌΠ°Π»ΡΠ½ΠΈΠΉ ΠΏΠ΅ΡΠ΅Π½ΠΎΡ, ΠΌΠΎΠ³Π»Π° Π·Π°Π³Π»ΡΡΠ°ΡΠΈΡΡ ΡΠ»ΡΡ
ΠΎΠΌ Π·ΠΎΠ²Π½ΡΡΠ½ΡΠΎΠ³ΠΎ Π²ΠΏΠ»ΠΈΠ²Ρ, Ρ ΡΠΈΠΌ ΡΠ°ΠΌΠΈΠΌ
Π΄ΠΎΡΡΠ³Π°Π»ΠΎΡΡ ΠΏΠΎΠ»ΡΠΏΡΠ΅Π½Π΅ ΡΡΡΠΈΠΌΠ°Π½Π½Ρ. ΠΠ΅Π·Π²Π°ΠΆΠ°ΡΡΠΈ Π½Π° ΡΠ΅, ΡΠΎ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Π½Π° Π±Π°Π³Π°ΡΡΠΎΡ
ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠ°Ρ
,
ΡΠΎΠ·ΡΠΌΡΠ½Π½Ρ ΡΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΠ² Π·Π°Π»ΠΈΡΠ°ΡΡΡΡΡ Π΄ΠΎΡΠΈΡΡ ΠΎΠ±ΠΌΠ΅ΠΆΠ΅Π½ΠΈΠΌ. ΠΠ»Ρ Π΄ΠΎΡΡΠ³Π½Π΅Π½Π½Ρ ΠΏΠΎΠ΄Π°Π»ΡΡΠΎΠ³ΠΎ ΠΏΡΠΎΠ³ΡΠ΅ΡΡ Π² ΡΠΎΠ·ΡΠΌΡΠ½Π½Ρ ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΎΡ
ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΡ Π· ΠΏΠΎΠ³Π»ΡΠ΄Ρ ΠΏΠΎΠ»ΡΠΏΡΠ΅Π½ΠΎΠ³ΠΎ ΡΡΡΠΈΠΌΠ°Π½Π½Ρ Ρ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΠΈΡ
Π±Π°Ρ'ΡΡΡΠ² Π½Π΅ΠΎΠ±Ρ
ΡΠ΄Π½Ρ ΡΠ½ΡΠ΅Π½ΡΠΈΠ²Π½Ρ Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½Ρ Ρ
ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ½Ρ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ. ΠΡΠΎΠ΅ΠΊΡ INTAS ΡΠΏΡΡΠΌΠΎΠ²Π°Π½ΠΎ Π½Π° Π·'ΡΡΡΠ²Π°Π½Π½Ρ ΠΊΠΎΡΠ΅Π»ΡΡΡΡ ΠΌΡΠΆ Π²ΠΈΠ½ΠΈΠΊΠ½Π΅Π½Π½ΡΠΌ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΠΈΡ
Π±Π°Ρ'ΡΡΡΠ² Ρ
ΠΏΠΎΠ»ΡΠΏΡΠ΅Π½ΠΎΠ³ΠΎ ΡΡΡΠΈΠΌΠ°Π½Π½Ρ Π² ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΠ°Ρ
TEXTOR, Π’-10 Ρ Tore Supra, Π° ΡΠ°ΠΊΠΎΠΆ Ρ ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΠ°Ρ
ΠΌΠ°Π»ΠΈΡ
ΡΠΎΠ·ΠΌΡΡΡΠ² Π€Π’-2, Π’Π£ΠΠΠ-3Π ΠΈ
CASTOR, Π· ΠΎΠ΄Π½ΠΎΠ³ΠΎ Π±ΠΎΠΊΡ, Ρ Π΅Π»Π΅ΠΊΡΡΠΈΡΠ½ΠΈΠΌΠΈ ΠΏΠΎΠ»ΡΠΌΠΈ, ΠΌΠΎΠ΄ΠΈΡΡΠΊΠΎΠ²Π°Π½ΠΈΠΌ ΠΌΠ°Π³Π½ΡΡΠ½ΠΈΠΌ ΡΠΈΡΠΎΠΌ Ρ Π΅Π»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ½ΠΎΡ Ρ ΠΌΠ°Π³Π½ΡΡΠ½ΠΎΡ
ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΡΡΡΡ, Π· ΡΠ½ΡΠΎΠ³ΠΎ Π±ΠΎΠΊΡ, Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ ΠΏΠ΅ΡΠ΅Π΄ΠΎΠ²ΠΈΡ
Π΄ΡΠ°Π³Π½ΠΎΡΡΠΈΡΠ½ΠΈΡ
Π·Π°ΡΠΎΠ±ΡΠ² Π· Π²ΠΈΡΠΎΠΊΠΈΠΌ ΠΏΡΠΎΡΡΠΎΡΠΎΠ²ΠΈΠΌ Ρ ΡΠΈΠΌΡΠ°ΡΠΎΠ²ΠΈΠΌ
ΡΠΎΠ·Π΄ΡΠ»Π΅Π½Π½ΡΠΌ. ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΡΡΡ Π· Π²ΠΈΡΠΎΠΊΠΈΠΌ ΡΡΡΠΏΠ΅Π½Π΅ΠΌ ΠΊΠΎΠΎΡΠ΄ΠΈΠ½Π°ΡΡΡ ΡΠΎΠ±ΡΡ Ρ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ Π²Π·Π°ΡΠΌΠΎΠ΄ΠΎΠΏΠΎΠ²Π½ΡΠ²Π°Π½ΠΎΡΡΡ
ΡΡΡΠ°Π½ΠΎΠ²ΠΎΠΊ TEXTOR Ρ Π’-10, Ρ ΠΌΠΎΠΆΠ»ΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΡΠ½ΡΠΈΡ
ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΡΠ², ΡΠΎ Π² ΡΡΠΊΡΠΏΠ½ΠΎΡΡΡ Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΠΈΡΡ Π½Π΅ΠΎΠ±Ρ
ΡΠ΄Π½Ρ Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½Ρ Ρ
ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ½Ρ ΠΏΠ΅ΡΠ΅Π²ΡΡΠΊΡ. ΠΠ»Ρ ΠΏΠ΅ΡΠ΅Π²ΡΡΠΊΠΈ Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΈΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡΠ² Π±ΡΠ΄Π΅ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½ΠΎ Π½ΠΎΠ²Ρ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ½Ρ ΠΌΠΎΠ΄Π΅Π»Ρ Ρ ΡΠΈΡΠ΅Π»ΡΠ½Π΅
ΠΌΠΎΠ΄Π΅Π»ΡΠ²Π°Π½Π½Ρ.Π ΠΏΠΎΡΠ»Π΅Π΄Π½ΠΈΠ΅ Π΄Π΅ΡΡΡΡ Π»Π΅Ρ Π±ΡΠ»ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ Π½ΠΎΠ²ΡΠ΅ ΡΠ΅ΠΆΠΈΠΌΡ ΡΠ°Π±ΠΎΡΡ ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΠΎΠ², Π² ΠΊΠΎΡΠΎΡΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΈ ΠΌΠ°Π³Π½ΠΈΡΠ½Π°Ρ
ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΡ, ΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½Π°Ρ Π·Π° Π°Π½ΠΎΠΌΠ°Π»ΡΠ½ΡΠΉ ΠΏΠ΅ΡΠ΅Π½ΠΎΡ, ΠΌΠΎΠ³Π»Π° ΠΏΠΎΠ΄Π°Π²Π»ΡΡΡΡΡ ΠΏΡΡΡΠΌ Π²Π½Π΅ΡΠ½Π΅Π³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ, ΠΈ ΡΠ΅ΠΌ ΡΠ°ΠΌΡΠΌ
Π΄ΠΎΡΡΠΈΠ³Π°Π»ΠΎΡΡ ΡΠ»ΡΡΡΠ΅Π½Π½ΠΎΠ΅ ΡΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅. ΠΠ΅ΡΠΌΠΎΡΡΡ Π½Π° ΡΠΎ, ΡΡΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Π½Π° ΠΌΠ½ΠΎΠ³ΠΈΡ
ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠ°Ρ
,
ΠΏΠΎΠ½ΠΈΠΌΠ°Π½ΠΈΠ΅ ΡΡΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΠΎΡΡΠ°ΡΡΡΡ Π²Π΅ΡΡΠΌΠ° ΠΎΠ³ΡΠ°Π½ΠΈΡΠ΅Π½Π½ΡΠΌ. ΠΠ»Ρ Π΄ΠΎΡΡΠΈΠΆΠ΅Π½ΠΈΡ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠ΅Π³ΠΎ ΠΏΡΠΎΠ³ΡΠ΅ΡΡΠ° Π² ΠΏΠΎΠ½ΠΈΠΌΠ°Π½ΠΈΠΈ
ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΠΎΠΉ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΠΈ Ρ ΡΠΎΡΠΊΠΈ Π·ΡΠ΅Π½ΠΈΡ ΡΠ»ΡΡΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ ΠΈ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΡΡ
Π±Π°ΡΡΠ΅ΡΠΎΠ² Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΡΠ΅
ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠ΅ ΠΈ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ. ΠΡΠΎΠ΅ΠΊΡ INTAS Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ Π½Π° Π²ΡΡΡΠ½Π΅Π½ΠΈΠ΅ ΠΊΠΎΡΡΠ΅Π»ΡΡΠΈΠΈ ΠΌΠ΅ΠΆΠ΄Ρ
Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ΠΌ ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΡΡ
Π±Π°ΡΡΠ΅ΡΠΎΠ² ΠΈ ΡΠ»ΡΡΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ Π² ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΠ°Ρ
TEXTOR, Π’-10 ΠΈ Tore Supra, Π° ΡΠ°ΠΊΠΆΠ΅ Π²
ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΠ°Ρ
ΠΌΠ°Π»ΡΡ
ΡΠ°Π·ΠΌΠ΅ΡΠΎΠ² Π€Π’-2, Π’Π£ΠΠΠ-3Π ΠΈ CASTOR, Ρ ΠΎΠ΄Π½ΠΎΠΉ ΡΡΠΎΡΠΎΠ½Ρ, ΠΈ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΏΠΎΠ»ΡΠΌΠΈ, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌ
ΠΌΠ°Π³Π½ΠΈΡΠ½ΡΠΌ ΡΠΈΡΠΎΠΌ ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΈ ΠΌΠ°Π³Π½ΠΈΡΠ½ΠΎΠΉ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΠΎΡΡΡΡ, Ρ Π΄ΡΡΠ³ΠΎΠΉ ΡΡΠΎΡΠΎΠ½Ρ, Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΏΠ΅ΡΠ΅Π΄ΠΎΠ²ΡΡ
Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΠ΅Π΄ΡΡΠ² Ρ Π²ΡΡΠΎΠΊΠΈΠΌ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΡΠΌ ΠΈ Π²ΡΠ΅ΠΌΠ΅Π½Π½ΡΠΌ ΡΠ°Π·ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ΠΌ. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΡΡ Ρ Π²ΡΡΠΎΠΊΠΎΠΉ
ΡΡΠ΅ΠΏΠ΅Π½ΡΡ ΠΊΠΎΠΎΡΠ΄ΠΈΠ½Π°ΡΠΈΠΈ ΡΠ°Π±ΠΎΡ ΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π²Π·Π°ΠΈΠΌΠΎΠ΄ΠΎΠΏΠΎΠ»Π½ΡΠ΅ΠΌΠΎΡΡΠΈ ΡΡΡΠ°Π½ΠΎΠ²ΠΎΠΊ TEXTOR ΠΈ Π’-10, ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠ΅ΠΉ Π΄ΡΡΠ³ΠΈΡ
ΡΠΎΠΊΠ°ΠΌΠ°ΠΊΠΎΠ², ΡΡΠΎ Π² ΡΠΎΠ²ΠΎΠΊΡΠΏΠ½ΠΎΡΡΠΈ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΡ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΡ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ ΠΈ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΡΡ ΠΏΡΠΎΠ²Π΅ΡΠΊΡ. ΠΠ»Ρ ΠΏΡΠΎΠ²Π΅ΡΠΊΠΈ
ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² Π±ΡΠ΄ΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π½ΠΎΠ²ΡΠ΅ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΈ ΡΠΈΡΠ»Π΅Π½Π½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅
ECMO for COVID-19 patients in Europe and Israel
Since March 15th, 2020, 177 centres from Europe and Israel have joined the study, routinely reporting on the ECMO support they provide to COVID-19 patients. The mean annual number of cases treated with ECMO in the participating centres before the pandemic (2019) was 55. The number of COVID-19 patients has increased rapidly each week reaching 1531 treated patients as of September 14th. The greatest number of cases has been reported from France (n = 385), UK (n = 193), Germany (n = 176), Spain (n = 166), and Italy (n = 136) .The mean age of treated patients was 52.6 years (range 16β80), 79% were male. The ECMO configuration used was VV in 91% of cases, VA in 5% and other in 4%. The mean PaO2 before ECMO implantation was 65 mmHg. The mean duration of ECMO support thus far has been 18 days and the mean ICU length of stay of these patients was 33 days. As of the 14th September, overall 841 patients have been weaned from ECMO
support, 601 died during ECMO support, 71 died after withdrawal of ECMO, 79 are still receiving ECMO support and for 10 patients status n.a. . Our preliminary data suggest that patients placed
on ECMO with severe refractory respiratory or cardiac failure secondary to COVID-19 have a reasonable (55%) chance of survival. Further extensive data analysis is expected to provide invaluable information on the demographics, severity of illness, indications and different ECMO management strategies in these patients
Russian experience of transport extracorporeal membrane oxygenation
Relevance The present time can be called a period of accumulation of experience of national health systems in different countries of the world in the application of transport extracorporeal membrane oxygenation (ECMO) technology at the pre- and inter-hospital stages of evacuation of patients to specialized ECMO-therapy centers. The role of such centers is to provide timely advice and, if necessary, perform inter-hospital evacuation. Materia l and me thods The study summarized and analyzed with the help of the national register "RosECMO" the own experience of 13 hospitals in the Russian Federation, who performed 68 inter-hospital evacuations under ECMO conditions by different modes of transport in patients of different age groups with symptoms of circulatory and respiratory failure. The following parameters were evaluated: characteristics of transport ECMO, clinical manifestations of potentially negative effects of transport, hospital survival, as well as the effect of experience (less and more than 10 cases of transport ECMO) of the presented clinics on the difference in the results obtained. RESULT S Connecting patients to the ECMO device reduces the likelihood of death on the SOFA and APACHE IV scales by 1.2 times (