AI Article Synopsis

  • The study focuses on understanding cerebral venous sinus thrombosis (CVST) and its relationship with reproductive health-related risk factors, mainly in women during pregnancy, postpartum, and while using oral contraceptives.
  • Out of 1144 CVST patients, 777 women were analyzed, revealing that the group without reproductive health-related risk factors was older and had higher instances of previous thrombosis and other complications compared to the group with such factors.
  • The findings suggest that age, oral contraceptive use, and the postpartum period increase the risk of CVST, highlighting the importance of early recognition of symptoms, particularly in postpartum women, to improve patient outcomes.

Article Abstract

Background: Early diagnosis of cerebral venous sinus thrombosis (CVST) associated with reproductive health-related risk factors (RHRF) including pregnancy, puerperium, and oral contraceptive (OC) use can prevent severe neurological sequelae; thus, the symptoms must be documented in detail for each group.

Methods: Out of 1144 patients with CVST, a total of 777 women were enrolled from a multicenter for the study of cerebral venous sinus thrombosis (VENOST). Demographic, biochemical, clinical, and radiological aspects were compared for 324 cases with RHRF and 453 cases without RHRF.

Results: The mean age of the RHRF (-) group (43.2 ± 13 years) was significantly higher than of the RHRF (+) group (34 ± 9 years). A previous history of deep venous thrombosis (3%), isolated cavernous sinus involvement (1%), cranial neuropathy (13%), comorbid malignancy (7%), and its disability scores after 12 months (9%) were significantly higher in the RHRF (-) group. The RHRF (+) group consisted of 44% cases of puerperium, 33% cases of OC users and 23% of pregnant women. The mean age was found to be higher in OC users (38 ± 9 years). A previous history of deep venous thrombosis was slightly higher in the pregnancy subgroup (4%). Epileptic seizures were more common in the puerperium group (44%).

Conclusion: The results of our study indicate that the risk of CSVT increases parallel to age, OC use, and puerperium period. In addition, when considering the frequency of findings and symptoms, epileptic seizures in the puerperium subgroup of the RHRF (+) group and malignancies in the RHRF (-) group may accompany the CSVT. In daily practice, predicting these risks for the CSVT and early recognition of the symptoms will provide significant benefits to patients.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7481993PMC
http://dx.doi.org/10.1155/2020/8610903DOI Listing

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Article Synopsis
  • The study focuses on understanding cerebral venous sinus thrombosis (CVST) and its relationship with reproductive health-related risk factors, mainly in women during pregnancy, postpartum, and while using oral contraceptives.
  • Out of 1144 CVST patients, 777 women were analyzed, revealing that the group without reproductive health-related risk factors was older and had higher instances of previous thrombosis and other complications compared to the group with such factors.
  • The findings suggest that age, oral contraceptive use, and the postpartum period increase the risk of CVST, highlighting the importance of early recognition of symptoms, particularly in postpartum women, to improve patient outcomes.
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Rh Ar/Au Ar' Transmetalation: A Case of Group Exchange Pivoting on the Formation of M-M' Bonds through Oxidative Insertion.

Angew Chem Int Ed Engl

March 2019

IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071, Valladolid, Spain.

By combining kinetic experiments, theoretical calculations, and microkinetic modeling, we show that Pf/Rf (C F /C Cl F ) exchange between [AuPf(AsPh )] and trans-[RhRf(CO)(AsPh ) ] does not occur by typical concerted Pf/Rf transmetalation via electron-deficient double bridges. Instead, it involves asymmetric oxidative insertion of the Rh complex into the (Ph As)Au-Pf bond to produce a [(Ph As)Au-RhPfRf(CO)(AsPh ) ] intermediate, followed by isomerization and reductive elimination of [AuRf(AsPh )]. Interesting differences were found between the LAu-Ar asymmetric oxidative insertion and the classical oxidative addition process of H to Vaska complexes.

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Objective: To characterize clinical outcomes of infants born after previable rupture of membranes (pROM, < 23 weeks gestation and latency period ≥ 2 weeks) in relation to refractory hypoxic respiratory failure (rHRF).

Study Design: pROM neonates categorized as rHRF (FiO > 0.6 for ≥ 2 h) and treated (high frequency ventilation + inhaled nitric oxide) were compared with no rHRF group.

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