4 research outputs found
ΠΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡ Ρ Π½ΠΎΠ²ΠΎΡΠΎΠΆΠ΄Π΅Π½Π½ΡΡ Ρ ΠΌΡΠ»ΡΡΠΈΡΠΈΡΡΠ΅ΠΌΠ½ΡΠΌ Π²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΡΠΈΠ½Π΄ΡΠΎΠΌΠΎΠΌ, Π°ΡΡΠΎΡΠΈΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌ Ρ COVID-19: ΡΠ΅ΡΠΈΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠΉ
Currently, there is more and more data on new manifestations of COVID-19, such as multisystem inflammatory syndrome in children, which occurs with severe complications, among which cases of pneumothorax have been recorded.
The article presents the experience of treating 4 newborns with a new coronovirus infection who were admitted to the clinic during 2021. In all clinical cases, children were born to mothers with a burdened obstetric history. All children had a positive RNA polymerase chain reaction for SARS-CoV-2. Children were admitted with signs of respiratory, cerebral insufficiency, gastrointestinal syndrome and metabolic disorders. The clinical picture and laboratory data corresponded to the definition of a multisystem inflammatory syndrome and was characterized not only by lung damage, but also by changes in other organs. Pneumothorax was diagnosed on days 1521. In all children, a tension pneumothorax developed on the right, in the first two cases against the background of mechanical ventilation, in the remaining two with spontaneous breathing with additional oxygenation. In one case, the pneumothorax was bilateral. Drainage of the pleural cavity in three children was carried out according to Bulau and in one case with active aspiration. Pneumothorax resolved after 414 days. Computed tomography of the chest, performed during the period of rehabilitation treatment, shows pronounced sclerotic and bullous changes in the lung parenchyma. All patients were discharged from the hospital in a satisfactory condition.
Since in all the above cases, pneumothorax occurred in newborns with a burdened obstetric history of mothers, it is difficult to differentiate the occurrence of pneumothorax associated with the underlying disease, the course of labor, complications of therapy, from the disease associated with COVID-19. Stronger evidence is needed from larger datasets and rigorous analysis.Π Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ ΠΏΠΎΡΠ²Π»ΡΠ΅ΡΡΡ Π²ΡΠ΅ Π±ΠΎΠ»ΡΡΠ΅ Π΄Π°Π½Π½ΡΡ
ΠΎ Π½ΠΎΠ²ΡΡ
ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΡΡ
COVID-19, ΡΠ°ΠΊΠΈΡ
ΠΊΠ°ΠΊ ΠΌΡΠ»ΡΡΠΈΡΠΈΡΡΠ΅ΠΌΠ½ΡΠΉ Π²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠΉ ΡΠΈΠ½Π΄ΡΠΎΠΌ Ρ Π΄Π΅ΡΠ΅ΠΉ, ΠΏΡΠΎΡΠ΅ΠΊΠ°ΡΡΠΈΠΉ Ρ ΡΡΠΆΠ΅Π»ΡΠΌΠΈ ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΡΠΌΠΈ, ΡΡΠ΅Π΄ΠΈ ΠΊΠΎΡΠΎΡΡΡ
Π·Π°ΡΠΈΠΊΡΠΈΡΠΎΠ²Π°Π½Ρ ΡΠ»ΡΡΠ°ΠΈ ΠΏΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡΠ°.
Π ΡΡΠ°ΡΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ ΠΎΠΏΡΡ Π»Π΅ΡΠ΅Π½ΠΈΡ ΡΠ΅ΡΡΡΠ΅Ρ
Π½ΠΎΠ²ΠΎΡΠΎΠΆΠ΄Π΅Π½Π½ΡΡ
Ρ Π½ΠΎΠ²ΠΎΠΉ ΠΊΠΎΡΠΎΠ½ΠΎΠ²ΠΈΡΡΡΠ½ΠΎΠΉ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠ΅ΠΉ, ΠΏΠΎΡΡΡΠΏΠΈΠ²ΡΠΈΡ
Π² ΠΊΠ»ΠΈΠ½ΠΈΠΊΡ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ 2021 Π³. ΠΠΎ Π²ΡΠ΅Ρ
ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΡΡ
Π΄Π΅ΡΠΈ ΡΠΎΠ΄ΠΈΠ»ΠΈΡΡ ΠΎΡ ΠΌΠ°ΡΠ΅ΡΠ΅ΠΉ Ρ ΠΎΡΡΠ³ΠΎΡΠ΅Π½Π½ΡΠΌ Π°ΠΊΡΡΠ΅ΡΡΠΊΠΈΠΌ Π°Π½Π°ΠΌΠ½Π΅Π·ΠΎΠΌ. Π£ Π²ΡΠ΅Ρ
Π΄Π΅ΡΠ΅ΠΉ Π±ΡΠ»Π° ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½Π°Ρ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°Π·Π½Π°Ρ ΡΠ΅ΠΏΠ½Π°Ρ ΡΠ΅Π°ΠΊΡΠΈΡ Π ΠΠ Π½Π° SARS-CoV-2. ΠΠ΅ΡΠΈ ΠΏΠΎΡΡΡΠΏΠΈΠ»ΠΈ Ρ ΠΏΡΠΈΠ·Π½Π°ΠΊΠ°ΠΌΠΈ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΠΎΠΉ, ΡΠ΅ΡΠ΅Π±ΡΠ°Π»ΡΠ½ΠΎΠΉ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎΡΡΠΈ, Π³Π°ΡΡΡΠΎΠΈΠ½ΡΠ΅ΡΡΠΈΠ½Π°Π»ΡΠ½ΡΠΌ ΡΠΈΠ½Π΄ΡΠΎΠΌΠΎΠΌ ΠΈ ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ Π½Π°ΡΡΡΠ΅Π½ΠΈΡΠΌΠΈ. ΠΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΊΠ°ΡΡΠΈΠ½Π° ΠΈ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΎΠ²Π°Π»ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΡΠ»ΡΡΠΈΡΠΈΡΡΠ΅ΠΌΠ½ΠΎΠ³ΠΎ Π²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠ½Π΄ΡΠΎΠΌΠ° ΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΠΎΠ²Π°Π»Π°ΡΡ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ ΠΏΠΎΡΠ°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ Π»Π΅Π³ΠΊΠΈΡ
, Π½ΠΎ ΠΈ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡΠΌΠΈ ΡΠΎ ΡΡΠΎΡΠΎΠ½Ρ Π΄ΡΡΠ³ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΎΠ². ΠΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΡΠΎΠ²Π°Π»ΠΈ Π½Π° 1521-Π΅ ΡΡΡΠΊΠΈ. Π£ Π²ΡΠ΅Ρ
Π΄Π΅ΡΠ΅ΠΉ Π½Π°ΠΏΡΡΠΆΠ΅Π½Π½ΡΠΉ ΠΏΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡ ΡΠ°Π·Π²ΠΈΠ»ΡΡ ΡΠΏΡΠ°Π²Π°, Π² ΠΏΠ΅ΡΠ²ΡΡ
Π΄Π²ΡΡ
ΡΠ»ΡΡΠ°ΡΡ
Π½Π° ΡΠΎΠ½Π΅ ΠΈΡΠΊΡΡΡΡΠ²Π΅Π½Π½ΠΎΠΉ Π²Π΅Π½ΡΠΈΠ»ΡΡΠΈΠΈ Π»Π΅Π³ΠΊΠΈΡ
, Π² ΠΎΡΡΠ°Π»ΡΠ½ΡΡ
Π΄Π²ΡΡ
ΠΏΡΠΈ ΡΠΏΠΎΠ½ΡΠ°Π½Π½ΠΎΠΌ Π΄ΡΡ
Π°Π½ΠΈΠΈ Ρ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ ΠΎΠΊΡΠΈΠ³Π΅Π½Π°ΡΠΈΠ΅ΠΉ. Π ΠΎΠ΄Π½ΠΎΠΌ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠΈ ΠΏΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡ Π±ΡΠ» Π΄Π²ΡΡΡΠΎΡΠΎΠ½Π½ΠΈΠΌ. ΠΡΠ΅Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠ»Π΅Π²ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΏΠΎΠ»ΠΎΡΡΠΈ Ρ ΡΡΠΎΠΈΡ
Π΄Π΅ΡΠ΅ΠΉ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΏΠΎ ΠΡΠ»Π°Ρ ΠΈ Π² ΠΎΠ΄Π½ΠΎΠΌ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠΈ Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΠΉ Π°ΡΠΏΠΈΡΠ°ΡΠΈΠ΅ΠΉ. ΠΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡ ΡΠ°Π·ΡΠ΅ΡΠ°Π»ΡΡ ΡΠ΅ΡΠ΅Π· 414 ΡΡΡ. ΠΠ° ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΠΎΠΉ ΡΠΎΠΌΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΎΡΠ³Π°Π½ΠΎΠ² Π³ΡΡΠ΄Π½ΠΎΠΉ ΠΊΠ»Π΅ΡΠΊΠΈ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΠΎΠΉ Π² ΠΏΠ΅ΡΠΈΠΎΠ΄ ΡΠ΅Π°Π±ΠΈΠ»ΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ, ΠΎΡΠΌΠ΅ΡΠ°ΡΡΡΡ Π²ΡΡΠ°ΠΆΠ΅Π½Π½ΡΠ΅ ΡΠΊΠ»Π΅ΡΠΎΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ Π±ΡΠ»Π»Π΅Π·Π½ΡΠ΅ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΏΠ°ΡΠ΅Π½Ρ
ΠΈΠΌΡ Π»Π΅Π³ΠΊΠΈΡ
. ΠΡΠ΅ ΠΏΠ°ΡΠΈΠ΅Π½ΡΡ Π²ΡΠΏΠΈΡΠ°Π½Ρ ΠΈΠ· ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ° Π² ΡΠ΄ΠΎΠ²Π»Π΅ΡΠ²ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠΌ ΡΠΎΡΡΠΎΡΠ½ΠΈΠΈ.
ΠΠΎΡΠΊΠΎΠ»ΡΠΊΡ Π²ΠΎ Π²ΡΠ΅Ρ
ΠΏΡΠΈΠ²Π΅Π΄Π΅Π½Π½ΡΡ
Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΡΡ
ΠΏΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡ Π²ΠΎΠ·Π½ΠΈΠΊ Ρ Π½ΠΎΠ²ΠΎΡΠΎΠΆΠ΄Π΅Π½Π½ΡΡ
Ρ ΠΎΡΡΠ³ΠΎΡΠ΅Π½Π½ΡΠΌ Π°ΠΊΡΡΠ΅ΡΡΠΊΠΈΠΌ Π°Π½Π°ΠΌΠ½Π΅Π·ΠΎΠΌ ΠΌΠ°ΡΠ΅ΡΠ΅ΠΉ, ΡΡΡΠ΄Π½ΠΎ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΡΠΎΠ²Π°ΡΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ ΠΏΠ½Π΅Π²ΠΌΠΎΡΠΎΡΠ°ΠΊΡΠ°, ΡΠ²ΡΠ·Π°Π½Π½ΠΎΠ³ΠΎ Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠΌ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠ΅ΠΌ, ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ΠΌ ΡΠΎΠ΄ΠΎΠ², ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΡΠΌΠΈ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ, ΠΎΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ, ΡΠ²ΡΠ·Π°Π½Π½ΠΎΠ³ΠΎ Ρ COVID-19. ΠΠ΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡ Π±ΠΎΠ»Π΅Π΅ ΡΠ±Π΅Π΄ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ Π΄ΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΡΡΡΠ²Π° ΠΈΠ· ΠΊΡΡΠΏΠ½ΡΡ
ΠΌΠ°ΡΡΠΈΠ²ΠΎΠ² Π΄Π°Π½Π½ΡΡ
Ρ ΠΈΡ
ΡΡΠ°ΡΠ΅Π»ΡΠ½ΡΠΌ Π°Π½Π°Π»ΠΈΠ·ΠΎΠΌ
Cross-validation strategies in QSPR modelling of chemical reactions
In this article, we consider cross-validation of the quantitative structure-property relationship models for reactions and show that the conventional k-fold cross-validation (CV) procedure gives an βoptimisticallyβ biased assessment of prediction performance. To address this issue, we suggest two strategies of model cross-validation, βtransformation-outβ CV, and βsolvent-outβ CV. Unlike the conventional k-fold cross-validation approach that does not consider the nature of objects, the proposed procedures provide an unbiased estimation of the predictive performance of the models for novel types of structural transformations in chemical reactions and reactions going under new conditions. Both the suggested strategies have been applied to predict the rate constants of bimolecular elimination and nucleophilic substitution reactions, and Diels-Alder cycloaddition. All suggested cross-validation methodologies and tutorial are implemented in the open-source software package CIMtools (https://github.com/cimm-kzn/CIMtools)