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To compare delivery outcomes of pregnancies diagnosed with placenta-accreta-syndrome (PAS) who underwent conservative treatment to patients who underwent cesarean hysterectomy. A retrospective study of all women diagnosed with PAS treated in one tertiary medical center between 03/2011 and 11/2020 was performed. Comparison was made between conservative management during cesarean delivery and cesarean hysterectomy. Conservative management included leaving uterus in situ with/without placenta and with/without myometrial resection. A total of 249 pregnancies (0.25 % of all deliveries) were diagnosed with PAS, 208 underwent conservative cesarean delivery and 41 had cesarean hysterectomy, 31 of them were unplanned (75.6 %). The median number of previous cesarean deliveries was significantly higher in the cesarean hysterectomy group. There was no difference in the duration from the last cesarean delivery, the presence of placenta previa, pre-operative hemoglobin or platelets levels between the pregnancies with conservative management and the cesarean hysterectomy. Significantly more pregnancies with sonographic suspicion of placenta percreta and bladder invasion had cesarean hysterectomy. Cesarean hysterectomy was significantly associated with earlier delivery, with bleeding and required significantly more blood products. There was no statistically significant difference in the rate of relaparotomy following cesarean delivery or the rate of infections. Multivariable-regression-analysis revealed a significant odds ratio of 3.38 of blood loss of >3,000 mL following cesarean hysterectomy. Conservative management in delivery of PAS pregnancies is associated with less bleeding complications during surgery compared to cesarean hysterectomy. [ABSTRACT FROM AUTHOR]

Lithium-rich mixed metal layeredoxides constitute a large classof promising high-potential positive electrode materials in whichhigher specific charges are accessed only by activation of the Li2MnO3domains. During the activation, oxygen isextracted from the oxide and evolves at the electrode–electrolyteinterface. Differential electrochemical mass spectrometry was employedto follow volatile species developed during cycling. Although typicalLi-ion aprotic carbonate electrolytes already suffer from oxidativedecomposition at high potentials, the presence of O2ishere confirmed to enhance its reactivity. During the first cycle,O2and CO2evolve and their respective amountsvary as a function of the cycling conditions. However, for ethylenecarbonate-based electrolytes, the amount of O2and CO2is found to be independent of the electrolyte composition.Moreover, X-ray photoelectron spectroscopy revealed that carbon-basedcomponents of the solid layers are dissolved between 3.0 and 4.0 Vversus Li+/Li where no gas is evolving. [ABSTRACT FROM AUTHOR]

Abstract In this work the Klein–Gordon equation for a complex scalar field with U(1) symmetry endowed in a mexican-hat scalar field potential with thermal and electromagnetic contributions is written as a Gross–Pitaevskii (GP)-like equation. This equation is interpreted as a charged generalization of the GP equation at finite temperatures found in previous works. Its hydrodynamical representation is obtained and the corresponding thermodynamical properties are derived and related to measurable quantities. The condensation temperature in the non-relativistic regime associated with the aforementioned system within the semiclassical approximation is calculated. Also, a generalized equation for the conservation of energy for a charged bosonic gas is found when electromagnetic fields are introduced, and it is studied how under certain circumstances its breaking of symmetry can give some insight on the phase transition of the system not just into the condensed phase but also on other related systems

Objectives: To compare delivery outcomes of pregnancies diagnosed with placenta-accreta-syndrome (PAS) who underwent conservative treatment to patients who underwent cesarean hysterectomy., Methods: A retrospective study of all women diagnosed with PAS treated in one tertiary medical center between 03/2011 and 11/2020 was performed. Comparison was made between conservative management during cesarean delivery and cesarean hysterectomy. Conservative management included leaving uterus in situ with/without placenta and with/without myometrial resection., Results: A total of 249 pregnancies (0.25 % of all deliveries) were diagnosed with PAS, 208 underwent conservative cesarean delivery and 41 had cesarean hysterectomy, 31 of them were unplanned (75.6 %). The median number of previous cesarean deliveries was significantly higher in the cesarean hysterectomy group. There was no difference in the duration from the last cesarean delivery, the presence of placenta previa, pre-operative hemoglobin or platelets levels between the pregnancies with conservative management and the cesarean hysterectomy. Significantly more pregnancies with sonographic suspicion of placenta percreta and bladder invasion had cesarean hysterectomy. Cesarean hysterectomy was significantly associated with earlier delivery, with bleeding and required significantly more blood products. There was no statistically significant difference in the rate of relaparotomy following cesarean delivery or the rate of infections. Multivariable-regression-analysis revealed a significant odds ratio of 3.38 of blood loss of >3,000 mL following cesarean hysterectomy., Conclusions: Conservative management in delivery of PAS pregnancies is associated with less bleeding complications during surgery compared to cesarean hysterectomy., (© 2023 Walter de Gruyter GmbH, Berlin/Boston.)