1,673 research outputs found
Low-energy M1 states in deformed nuclei: spin-scissors or spin-flip?
The low-energy states in deformed Dy and spherical Ni are
explored in the framework of fully self-consistent Quasiparticle Random-Phase
Approximation (QRPA) with various Skyrme forces. The main attention is paid to
orbital and spin excitations. The obtained results are compared with the
prediction of the low-energy {\it spin-scissors} resonance suggested
within Wigner Function Moments (WFM) approach. A possible relation of this
resonance to low-energy spin-flip excitations is analyzed. In connection with
recent WFM studies, we consider evolution of the low-energy spin-flip states in
Dy with deformation (from the equilibrium value to the spherical
limit). The effect of tensor forces is briefly discussed. It is shown that two
groups of states observed at 2.4-4 MeV in Dy are rather explained
by fragmentation of the orbital strength than by the occurrence of the
collective spin-scissors resonance. In general, our calculations do not confirm
the existence of this resonance.Comment: 7 pages, 7 figures, submitted to Physics of Atomic Nuclei. arXiv
admin note: text overlap with arXiv:2102.13580. As compared with the previous
version, Ref. [1] was removed, Ref [33] was replaced, description of Fig. 3
was modifie
Molecular Structure of Pyrazinamide: A Critical Assessment of Modern Gas Electron Diffraction Data from Three Laboratories
Otlyotov AA, Girichev, Georgiy V, Rykov AN, Glodde T, Vishnevskiy Y. Molecular Structure of Pyrazinamide: A Critical Assessment of Modern Gas Electron Diffraction Data from Three Laboratories. JOURNAL OF PHYSICAL CHEMISTRY A. 2020;124(25):5204-5211.Accuracy and precision of molecular parameters determined by modern gas electron diffraction have been investigated. Diffraction patterns of gaseous pyrazinamide have been measured independently in three laboratories, in Bielefeld (Germany), Ivanovo (Russia), and Moscow (Russia). All data sets have been analyzed in equal manner using a highly controlled background elimination procedure and flexible restraints in molecular structure refinement. In detailed examination and comparison of the obtained results we have determined the average experimental precision of 0.004 angstrom for bond lengths and 0.2 degrees for angles. The corresponding average deviations of the refined parameters from the ae-CCSD(T)/cc-pwCVTZ theoretical values were 0.003 angstrom and 0.2 degrees. The average precision for refined amplitudes of interatomic vibrations was determined to be 0.005 angstrom. It is recommended to take into account these values in calculations of total errors for refined parameters of other molecules with comparable complexity
Microscopic analysis of dipole electric and magnetic strengths in Gd
The dipole electric () and magnetic () strengths in strongly deformed
Gd are investigated within a fully self-consistent Quasiparticle Random
Phase Approximation (QRPA) with Skyrme forces SV-bas, SLy6 and SG2. We inspect,
on the same theoretical footing, low-lying dipole states and the isovector
giant dipole resonance in channel and orbital scissors resonance as well
as spin-flip giant resonance in channel. Besides, toroidal mode and
low-energy spin-flip excitations are considered. The calculations show a
good agreement with available experimental data, except for the recent NRF
measurements of M. Tamkas et al for strength at 4-6 MeV, where, in
contradiction with our calculations and previous data, almost no
strength was observed.Comment: 8 pages, 4 figure
ΠΠΈΠΊΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΠΏΠ΅ΠΊΡΡ Π½ΠΎΠ·ΠΎΠΊΠΎΠΌΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΈ Ρ Π±ΠΎΠ»ΡΠ½ΡΡ Ρ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΡΠΌΠΈ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡΠ°ΠΌΠΈ, ΠΏΠ΅ΡΠ΅Π½Π΅ΡΡΠΈΡ ΡΠ΅ΠΏΡΠΈΡ
In 2015β2017, a cohort study of 72 cases of infectious spondylitis (is) with severe sepsis was conducted, which amounted, to 5,8% of all operated, patients. The study showed, that Gram. (+) bacteria -52 (55,9%) prevailed, in crops from all media. Gram. (-) bacteria were detected, in 1\3 cases 37(39.8%), and Candida infection in 4 (4,3%).The main traced, sources of NI in patients with is where bedsores (13\18,1%), infection with surgical intervention, fistula (14\19,4), uroinfection (22\30,6%), subclavian catheters (7\55.5%). Gram. (+) bacteria was 26,8% (15 cases) and was mainly found, in wounds and. catheters. Gram. (-) bacteria more prevalent in ulcers in the urine culture (56,4 per cent). In 10 cases (17,8%) the crops were sterile. An increase in the role of S. epidermitis and. K. pneumoniae in the etiology of sepsis was found, in bacteriological typing of media. High resistance of nosocomial strains of Staphylococcus spp is noted. Gram. (-) bacteria to fluoroquin.alon.es and. cephalosporins 3β4 generations, which excludes the possibility of their empirical use in the treatment of severe sepsis in patients with is.Π ΠΏΠ΅ΡΠΈΠΎΠ΄ 2015β2017 Π³Π³. ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΊΠΎΠ³ΠΎΡΡΠ½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ 72 ΡΠ»ΡΡΠ°Π΅Π² ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡΠ° Ρ ΡΡΠΆΠ΅Π»ΡΠΌ, ΡΠ΅ΠΏΡΠΈΡΠΎΠΌ, ΡΡΠΎ ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΎ 5,8% ΠΎΡ. Π²ΡΠ΅Ρ
ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
Π² Π±ΠΎΠ»ΡΠ½ΡΡ
. ΠΠ°ΠΊ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅, Π² ΠΏΠΎΡΠ΅Π²Π°Ρ
ΠΏΡΠ΅ΠΎΠ±Π»Π°Π΄Π°Π»ΠΈ Π³ΡΠ°ΠΌΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ Π±Π°ΠΊΡΠ΅ΡΠΈΠΈ β 52(55,9%). ΠΡΠ°ΠΌ-ΠΎΡΡΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΡΠ΅ Π±Π°ΠΊΡΠ΅ΡΠΈΠΈ Π²ΡΡΠ²Π»Π΅Π½Ρ Π² 1/3 ΡΠ»ΡΡΠ°Π΅Π² β 37 (39,8%), Π° ΠΊΠ°Π½Π΄ΠΈΠ΄ΠΎΠ·Π½Π°Ρ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΡ β Π² 4 (4,3%).ΠΡΠ½ΠΎΠ²Π½ΡΠΌΠΈ ΡΠ°ΠΊΡΠΎΡΠ°ΠΌΠΈ ΡΠΈΡΠΊΠ° Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ ΡΠ΅ΠΏΡΠΈΡΠ° Ρ Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΡΠΌΠΈ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡΠ°ΠΌΠΈ Π±ΡΠ»ΠΈ ΠΏΡΠΎΠ»Π΅ΠΆΠ½ΠΈ (13/18,1%), ΠΈΠ½ΡΠ΅ΠΊΡΠΈΡ ΠΎΠ±Π»Π°ΡΡΠΈ Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΌΠ΅ΡΠ°ΡΠ΅Π»ΡΡΡΠ²Π° ΠΈ ΡΠ²ΠΈΡΠΈ (14/19,4), ΡΡΠΎΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΈ (22/30,6%), ΠΏΠΎΠ΄ΠΊΠ»ΡΡΠΈΡΠ½ΡΠ΅ ΠΊΠ°ΡΠ΅ΡΠ΅ΡΡ (7/55,5%). ΠΡΠ°ΠΌΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ Π±Π°ΠΊΡΠ΅ΡΠΈΠΈ ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΈ 26,8% (15 ΡΠ»ΡΡΠ°Π΅Π²) ΠΈ Π² ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠΌ ΠΎΠ±Π½Π°ΡΡΠΆΠΈΠ²Π°Π»ΠΈΡΡ Π² ΡΠ°Π½Π°Ρ
ΠΈ ΠΊΠ°ΡΠ΅ΡΠ΅ΡΠ°Ρ
. ΠΡΠ°ΠΌΠΎΡΡΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΡΠ΅ Π±Π°ΠΊΡΠ΅ΡΠΈΠΈ ΡΠ°ΡΠ΅ Π²ΡΡΠ²Π»ΡΠ»ΠΈΡΡ Π² ΠΏΡΠΎΠ»Π΅ΠΆΠ½ΡΡ
ΠΈ Π² ΠΏΠΎΡΠ΅Π²Π°Ρ
ΠΌΠΎΡΠΈ (56,4%). Π 10 ΡΠ»ΡΡΠ°ΡΡ
(17,8%) ΠΏΠΎΡΠ΅Π²Ρ. Π±ΡΠ»ΠΈ ΡΡΠ΅ΡΠΈΠ»ΡΠ½Ρ.ΠΡΠΈ Π±Π°ΠΊΡΠ΅ΡΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΌ, ΡΠΈΠΏΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ ΡΠΎΠ»ΠΈ S. epidermitis ΠΈ K. pneumoniae Π² ΡΡΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ ΡΠ΅ΠΏΡΠΈΡΠ° ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΏΡΠ΅Π΄ΡΠ΄ΡΡΠΈΠΌ, Π΄Π΅ΡΡΡΠΈΠ»Π΅ΡΠΈΠ΅ΠΌ.. ΠΡΠΌΠ΅ΡΠ°Π΅ΡΡΡ Π²ΡΡΠΎΠΊΠ°Ρ ΡΠ΅Π·ΠΈΡΡΠ΅Π½ΡΠ½ΠΎΡΡΡ Π½ΠΎΠ·ΠΎΠΊΠΎΠΌΠΈΠ°Π»ΡΠ½ΡΡ
ΡΡΠ°ΠΌΠΌΠΎΠ² Staphylococcus spp. ΠΈ Π³ΡΠ°ΠΌΠΎΡΡΠΈΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠ»ΠΎΡΡ, ΠΊ ΡΡΠΎΡΡ
ΠΈΠ½Π°Π»ΠΎΠ½Π°ΠΌ ΠΈ ΡΠ΅ΡΠ°Π»ΠΎΡΠΏΠΎΡΠΈΠ½Π°ΠΌ 3β4 ΠΏΠΎΠΊΠΎΠ»Π΅Π½ΠΈΡ, ΡΡΠΎ ΠΈΡΠΊΠ»ΡΡΠ°Π΅Ρ, Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΈΡ
ΡΠΌΠΏΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΡΠ΅ΡΠ°ΠΏΠΈΠΈ ΡΡΠΆΠ΅Π»ΡΡ
ΡΠ΅ΠΏΡΠΈΡΠΎΠ² Ρ Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΡΠΌΠΈ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡΠ°ΠΌΠΈ
ΠΠΠΠΠ ΠΠΠΠΠΠ‘Π’Π¬ Π ΠΠ ΠΠΠΠΠΠΠ ΠΠΠΠΠΠ Π ΠΠ‘ΠΠ ΠΠΠΠΠΠΠΠΠΠΠΠΠ― ΠΠΠ‘ΠΠΠΠΠΠ ΠΠ¦ΠΠΠΠΠ«Π₯ ΠΠΠ€ΠΠΠ¦ΠΠΠΠΠ«Π₯ ΠΠ‘ΠΠΠΠΠΠΠΠ Π£ ΠΠΠΠ¬ΠΠ«Π₯ Π’Π£ΠΠΠ ΠΠ£ΠΠΠΠΠ«Π Π‘ΠΠΠΠΠΠΠΠ’ΠΠ
Goal of the study: to study co-morbidity and risk of post-operative infectious complications in tuberculous spondylitis patients with concurrent non-specific spinal osteomyelitis as per ASA, PITSS scales and Charlson score.Materials and methods. Surgical treatment of 41 patients with infectious spondylitis was retrospectively analyzed. Patients were divided into 2 groups. Tuberculous spondylitis patients were included into group 1 β 24 (58.5%), and those suffering from non-specific spinal osteomyelitis were included into group 2 (17.0-41.5%) More than half of tuberculous spondylitis patients were HIV positive (13/54.3%) and 16 out of 24 patients (66.7%) had generalized form of tuberculosis. The survival forecast for the patients after surgery was estimated by Charlson score, ASA score was used for evaluation of surgical and anesthetic risks, and risk of postoperative complications was assessed by PITSS (Postoperative infection treatment score for the spine) (2012).Results. Early and late infectious complications were detected in 4 (9.7%) of patients with ASA at 3-4 scores, Charlson score exceeding 5 and high risk as per PITSS (more than 21 scores). Tuberculous spondylitis patients had Charlson score exceeding 5 and high risk as per ASA (4 scores) more often compared to those suffering from non-specific spinal osteomyelitis. The majority of infectious spondylitis patients (28/57.5%) had medium and high risk of postoperative complications development as per PITSS. HIV positive tuberculous spondylitis patients had two fold risk of postoperative complications development compared to those HIV negative (Ο2 = 4.53, OR = 2.76, p = 0.0012).Β Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ: ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΠΊΠΎΠΌΠΎΡΠ±ΠΈΠ΄Π½ΠΎΡΡΠΈ ΠΈ ΡΠΈΡΠΊΠ° Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ Ρ Π±ΠΎΠ»ΡΠ½ΡΡ
ΡΡΠ±Π΅ΡΠΊΡΠ»Π΅Π·Π½ΡΠΌ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡΠΎΠΌ (Π’Π‘) ΠΈ Π½Π΅ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΡΡΠ΅ΠΎΠΌΠΈΠ΅Π»ΠΈΡΠΎΠΌ ΠΏΠΎΠ·Π²ΠΎΠ½ΠΎΡΠ½ΠΈΠΊΠ° (ΠΠΠ) ΠΏΠΎ ΡΠΊΠ°Π»Π°ΠΌ ASA, PITSS ΠΈ ΠΈΠ½Π΄Π΅ΠΊΡΡ ΠΊΠΎΠΌΠΎΡΠ±ΠΈΠ΄Π½ΠΎΡΡΠΈ Π§Π°ΡΠ»ΡΠΎΠ½Π° (ΠΠΠ§).ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ ΡΠ΅ΡΡΠΎΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ 41 ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° Ρ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΡΠΌΠΈ ΡΠΏΠΎΠ½Π΄ΠΈΠ»ΠΈΡΠ°ΠΌΠΈ (ΠΠ‘). ΠΠ°ΡΠΈΠ΅Π½ΡΡ Π±ΡΠ»ΠΈ ΡΠ°Π·Π±ΠΈΡΡ Π½Π° 2 Π³ΡΡΠΏΠΏΡ. ΠΠΎΠ»ΡΠ½ΡΠ΅ Π’Π‘ Π²ΠΎΡΠ»ΠΈ Π² 1-Ρ Π³ΡΡΠΏΠΏΡ - 24 (58,5%), 2-Ρ Π³ΡΡΠΏΠΏΡ (17,0-41,5%) ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΈ ΠΏΠ°ΡΠΈΠ΅Π½ΡΡ Ρ ΠΠΠ. ΠΠΎΠ»Π΅Π΅ ΠΏΠΎΠ»ΠΎΠ²ΠΈΠ½Ρ Π±ΠΎΠ»ΡΠ½ΡΡ
Π’Π‘ (13/54,3%) ΠΈΠΌΠ΅Π»ΠΈ ΠΠΠ§-ΠΈΠ½ΡΠ΅ΠΊΡΠΈΡ, Ρ 16/24 (66,7%) ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΠΈΠΌΠ΅Π»ΡΡ Π³Π΅Π½Π΅ΡΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΉ ΡΡΠ±Π΅ΡΠΊΡΠ»Π΅Π·. ΠΡΠΎΠ³Π½ΠΎΠ· Π²ΡΠΆΠΈΠ²Π°Π΅ΠΌΠΎΡΡΠΈ Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΏΠΎΡΠ»Π΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ ΡΠ°ΡΡΡΠΈΡΠ°Π½ ΠΏΠΎ ΠΠΠ§, Π΄Π°Π½Π° ΠΎΡΠ΅Π½ΠΊΠ° ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΡΠΈΡΠΊΠ° ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ ΠΈ Π½Π°ΡΠΊΠΎΠ·Π° ΠΏΠΎ ΡΠΊΠ°Π»Π΅ ASA, ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΏΡΠΎΠ³Π½ΠΎΠ·ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΈΡΠΊΠ° ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ ΠΏΠΎ ΡΠΊΠ°Π»Π΅ PITSS (Postoperative infection treatment score for the spine) (2012).Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. Π Π°Π½Π½ΠΈΠ΅ ΠΈ ΠΏΠΎΠ·Π΄Π½ΠΈΠ΅ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΡΠ΅ ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΡ Π²ΡΡΠ²Π»Π΅Π½Ρ Ρ 4 (9,7%) Π±ΠΎΠ»ΡΠ½ΡΡ
Ρ ΡΠΈΡΠΊΠΎΠΌ ΠΏΠΎ ASA 3-4 cΡ., ΠΠΠ§ Π±ΠΎΠ»Π΅Π΅ 5 Π±Π°Π»Π»ΠΎΠ² ΠΈ PITSS Π²ΡΡΠΎΠΊΠΎΠΉ ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΡΠΈΡΠΊΠ° (Π±ΠΎΠ»Π΅Π΅ 21 Π±Π°Π»Π»Π°). Π£ Π±ΠΎΠ»ΡΠ½ΡΡ
Π’Π‘ ΠΠΠ§ Π±ΠΎΠ»Π΅Π΅ 5 Π±Π°Π»Π»ΠΎΠ² ΠΈ Π²ΡΡΠΎΠΊΠ°Ρ ΡΡΠ΅ΠΏΠ΅Π½Ρ ΡΠΈΡΠΊΠ° ΠΏΠΎ ASA (4 ΡΡ.) Π²ΡΡΡΠ΅ΡΠ°Π»ΠΈΡΡ ΡΠ°ΡΠ΅, ΡΠ΅ΠΌ ΡΡΠ΅Π΄ΠΈ Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΠΠ (p β€ 0,05). ΠΠΎΠ»ΡΡΠΈΠ½ΡΡΠ²ΠΎ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Ρ ΠΠ‘ (28/57,5%) ΠΈΠΌΠ΅Π»ΠΈ ΡΡΠ΅Π΄Π½ΠΈΠΉ ΠΈ Π²ΡΡΠΎΠΊΠΈΠΉ ΡΠΈΡΠΊ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΠΠ ΠΏΠΎ ΡΠΊΠ°Π»Π΅ PITSS. Π£ ΠΠΠ§-ΠΏΠΎΠ·ΠΈΡΠΈΠ²Π½ΡΡ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Ρ Π’Π‘ ΡΠΈΡΠΊ ΠΈΡ
Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ Π±ΡΠ» Π² 2 ΡΠ°Π·Π° Π²ΡΡΠ΅, ΡΠ΅ΠΌ Ρ ΠΠΠ§-Π½Π΅Π³Π°ΡΠΈΠ²Π½ΡΡ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² (Ο2 = 4,53, OR = 2,76, p = 0,0012)
ΠΠ»ΠΈΡΠ½ΠΈΠ΅ ΡΠ²ΠΎΠ»ΡΡΠΈΠΈ Π»ΡΡΠ΅Π²ΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ Π½Π° Ρ ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΈΠ΅ ΠΎ ΡΠ°Π·Π°Ρ ΠΈ ΡΡΠ°Π΄ΠΈΡΡ ΠΎΡΡΡΠΎΠ³ΠΎ ΠΏΠ°Π½ΠΊΡΠ΅Π°ΡΠΈΡΠ°
In modern pancreatology, diagnostics of acute pancreatitis is one of the most complex and urgent problems. In recent decades, the incidence of acute pancreatitis (AP) has more than doubled and now it exceeds 25% among acute surgical diseases. Pancreonecrosis accounts for about 20β35% of all complications. General and postoperative mortality reaches 15β45%. Modern radiology methods in patients with AP and pancreatic necrosis aid in determination of disease form and its complications. In this article, the importance of radiological methods for treatment planning is reviewed. Close attention is paid to the interpretation of computer tomography (CT) data using various CT-scales and classifications. High incidence among young and healthy people highlights socio-economic significance of AP. Therefore, in this literature review, we focus on the publications and clinical cases of acute pancreatitis.Β Π ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ ΠΏΠ°Π½ΠΊΡΠ΅Π°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ° Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΠΎΡΡΡΠΎΠ³ΠΎ ΠΏΠ°Π½ΠΊΡΠ΅Π°ΡΠΈΡΠ° β ΠΎΠ΄Π½Π° ΠΈΠ· Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΡΠ»ΠΎΠΆΠ½ΡΡ
ΠΈ Π°ΠΊΡΡΠ°Π»ΡΠ½ΡΡ
. ΠΠ° ΠΏΠΎΡΠ»Π΅Π΄Π½ΠΈΠ΅ Π΄Π΅ΡΡΡΠΈΠ»Π΅ΡΠΈΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π΅ΠΌΠΎΡΡΡ ΠΎΡΡΡΡΠΌ ΠΏΠ°Π½ΠΊΡΠ΅Π°ΡΠΈΡΠΎΠΌ ΡΠ²Π΅Π»ΠΈΡΠΈΠ»Π°ΡΡ Π±ΠΎΠ»Π΅Π΅ ΡΠ΅ΠΌ Π² 2 ΡΠ°Π·Π° ΠΈ ΠΏΡΠ΅Π²ΡΡΠ°Π΅Ρ 25% Π² ΡΡΡΡΠΊΡΡΡΠ΅ ΠΎΡΡΡΡΡ
Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ. ΠΠ°Π½ΠΊΡΠ΅ΠΎΠ½Π΅ΠΊΡΠΎΠ· ΡΠΎΡΡΠ°Π²Π»ΡΠ΅Ρ ΠΎΠΊΠΎΠ»ΠΎ 20β35% ΡΡΠ΅Π΄ΠΈ Π²ΡΠ΅Ρ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ. ΠΠ±ΡΠ°Ρ ΠΈ ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½Π°Ρ Π»Π΅ΡΠ°Π»ΡΠ½ΠΎΡΡΡ Π΄ΠΎΡΡΠΈΠ³Π°Π΅Ρ 15β45%. ΠΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Π»ΡΡΠ΅Π²ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ Ρ Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΎΡΡΡΡΠΌ ΠΏΠ°Π½ΠΊΡΠ΅Π°ΡΠΈΡΠΎΠΌ ΠΈ ΠΏΠ°Π½ΠΊΡΠ΅ΠΎΠ½Π΅ΠΊΡΠΎΠ·ΠΎΠΌ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΡ ΡΠΎΡΠΌΡ Π±ΠΎΠ»Π΅Π·Π½ΠΈ ΠΈ Π²ΡΡΠ²ΠΈΡΡ Π΅Π΅ ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΡ. Π Π΄Π°Π½Π½ΠΎΠΌ ΠΎΠ±Π·ΠΎΡΠ΅ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΡ ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°Π΅ΡΡΡ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ Π»ΡΡΠ΅Π²ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ Π² ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ Π»Π΅ΡΠ΅Π±Π½ΠΎΠΉ ΡΠ°ΠΊΡΠΈΠΊΠΈ Ρ Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΎΡΡΡΡΠΌ ΠΏΠ°Π½ΠΊΡΠ΅Π°ΡΠΈΡΠΎΠΌ. ΠΡΠΈΡΡΠ°Π»ΡΠ½ΠΎΠ΅ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ ΡΠ΄Π΅Π»Π΅Π½ΠΎ ΠΈΠ½ΡΠ΅ΡΠΏΡΠ΅ΡΠ°ΡΠΈΠΈ Π΄Π°Π½Π½ΡΡ
ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΠΎΠΉ ΡΠΎΠΌΠΎΠ³ΡΠ°ΡΠΈΠΈ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΠ’-ΡΠΊΠ°Π» ΠΈ ΠΊΠ»Π°ΡΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΉ. ΠΡΡΠΎΠΊΠ°Ρ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π΅ΠΌΠΎΡΡΡ Π»ΠΈΡ ΠΌΠΎΠ»ΠΎΠ΄ΠΎΠ³ΠΎ ΠΈ ΡΡΡΠ΄ΠΎΡΠΏΠΎΡΠΎΠ±Π½ΠΎΠ³ΠΎ Π²ΠΎΠ·ΡΠ°ΡΡΠ° ΠΏΡΠΈΠ΄Π°Π΅Ρ ΡΡΠΎΠΉ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ΅ Π²Π°ΠΆΠ½ΠΎΠ΅ ΡΠΎΡΠΈΠ°Π»ΡΠ½ΠΎ-ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅. ΠΠΎΡΡΠΎΠΌΡ Π² Π½Π°ΡΡΠΎΡΡΠ΅ΠΌ ΠΎΠ±Π·ΠΎΡΠ΅ ΠΏΡΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Ρ Π΄Π°Π½Π½ΡΠ΅ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΡ ΠΈ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ»ΡΡΠ°ΠΈ ΠΎΡΡΡΠΎΠ³ΠΎ ΠΏΠ°Π½ΠΊΡΠ΅Π°ΡΠΈΡΠ°.
Influence of Antipodally Coupled Iodine and Carbon Atoms on the Cage Structure of 9,12-I2-closo-1,2-C2B10H10 : An Electron Diffraction and Computational Study
Because of the comparable electron scattering abilities of carbon and boron, the electron diffraction structure of the C2v-symmetric molecule closo-1,2-C2B10H12 (1), one of the building blocks of boron cluster chemistry, is not as accurate as it could be. On that basis, we have prepared the known diiodo derivative of 1, 9,12-I2-closo-1,2-C2B10H10 (2), which has the same point-group symmetry as 1 but in which the presence of iodine atoms, with their much stronger ability to scatter electrons, ensures much better structural characterization of the C2B10 icosahedral core. Furthermore, the influence on the C2B10 geometry in 2 of the antipodally positioned iodine substituents with respect to both carbon atoms has been examined using the concerted application of gas electron diffraction and quantum chemical calculations at the MP2 and density functional theory (DFT) levels. The experimental and computed molecular geometries are in good overall agreement. Molecular dynamics simulations used to obtain vibrational parameters, which are needed for analyzing the electron diffraction data, have been performed for the first time for this class of compound. According to DFT calculations at the ZORA-SO/BP86 level, the 11B chemical shifts of the boron atoms to which the iodine substituents are bonded are dominated by spin-orbit coupling. Magnetically induced currents within 2 have been calculated and compared to those for [B12H12]2-, the latter adopting a regular icosahedral structure with Ih point-group symmetry. Similar total current strengths are found but with a certain anisotropy, suggesting that spherical aromaticity is present; electron delocalization in the plane of the hetero atoms in 2 is slightly hindered compared to that for [B12H12]2-, presumably because of the departure from ideal icosahedral symmetry
Cardiometabolic risk factors in predicting obstructive coronary artery disease in patients with non-ST-segment elevation acute coronary syndrome
Aim. To develop predictive models of obstructive coronary artery disease (OPCA) in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS) based on the predictive potential of cardiometabolic risk (CMR) factors.Material and methods. This prospective observational cohort study included 495 patients with NSTE-ACS (median age, 62 years; 95% confidence interval [60; 64]), who underwent invasive coronary angiography (CAG). Two groups of persons were identified, the first of which consisted of 345 (69,6%) patients with OPCA (stenosis β₯50%), and the second β 150 (30,4%) without OPCA (<50%). The clinical and functional status of patients before CAG was assessed including 29 parameters. For data processing and analysis, the Mann-Whitney, Fisher, chi-squared tests and univariate logistic regression (LR) were used. In addition, for the development of predictive models, we used multivariate LR (MLR), support vector machine (SVM) and random forest (RF). The models was assessed using 4 metrics: area under the ROC-curve (AUC), sensitivity, specificity, and accuracy.Results. A comprehensive analysis of functional and metabolic status of patients made it possible to identify the CMR factors that have linear and nonlinear association with OPCA. Their weighting coefficients and threshold values with the highest predictive potential were determined using univariate LR. The quality metrics of the best predictive algorithm based on an ensemble of 10 MLR models were as follows: AUC β 0,82, specificity and accuracy β 0,73, sensitivity β 0,75. The predictors of this model were 7 categorical (total cholesterol (CS) β₯5,9 mmol/L, low-density lipoprotein cholesterol >3,5 mmol/L, waist-to-hip ratio β₯0,9, waist-to-height ratio β₯0,69, atherogenic index β₯3,4, lipid accumulation product index β₯38,5 cm*mmol/L, uric acid β₯356 pmol/L) and 2 continuous (high density lipoprotein cholesterol and insulin resistance index) variables.Conclusion. The developed algorithm for selecting predictors made it possible to determine their significant predictive threshold values and weighting coefficients characterizing the degree of influence on endpoints. The ensemble of MLR models demonstrated the highest accuracy of OPCA prediction before the CAG. The predictive accuracy of the SVM and RF models was significantly lower
Parameters of complete blood count, lipid profile and their ratios in predicting obstructive coronary artery disease in patients with non-ST elevation acute coronary syndrome
Aim. To evaluate the predictive potential of the parameters of complete blood count (CBC), lipid profile and their ratios for predicting obstructive coronary artery disease (oCAD) in patients with non-ST elevation acute coronary syndrome (NSTEACS).MaterialΒ andΒ methods. The study included 600 patients with NSTE-ACS with a median age of 62 years who underwent invasive coronary angiography (CA). Two groups were formed, the first of which consisted of 360 (60%) patients with oCAD (stenosis β₯50%), and the second β 240 (40%) with coronary stenosis <50%. The clinical and functional status of patients before CAG was assessed by 33 parameters, including parameters of CBC, lipid profile and their ratio. For statistical processing and data analysis, the Mann-Whitney, Fisher, chi-squared tests, univariate logistic regression (LR) were used, while for the creation of predictive models, multivariate LR (MLR) was used. The quality was assessed by 4 metrics: area under the ROC curve (AUC), sensitivity (Se), specificity (Sp), and accuracy (Ac).Results. CBC and lipid profile analysis made it possible to identify factors that are linearly and non-linearly associated with oCAD. Univariate LR revealed their threshold values with the highest predictive potential. The quality metrics of the best prognostic model developed using MLR were as follows: AUC β 0,80, Sp β 0,79, Ac β 0,76, Se β 0,78. Its predictors were 8 following categorical parameters: age >55 years in men and >65 years in women, lymphocyte count (LYM) <19%, hematocrit >49%, immune-inflammation index >1000, high density lipoprotein cholesterol (HDL-C) to low density lipoprotein cholesterol (LDL-C) ratio <0,3, monocyte (MON)-to-HDL-C ratio >0,8, neutrophil (NEUT)-to-HDL-C ratio >5,7 and NEUT/LYM >3. The relative contribution of individual predictors to the development of end point was determined.Conclusion. The predictive algorithm (model 9), developed on the basis of MLR, showed a better quality metrics ratio than other models. The following 3 factors had the dominant influence on the oCAD risk: HDL-C/LDL-C (38%), age of patients (31%), and MON/HDL-C (14%). The influence of other factors on the oCAD risk was less noticeable
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