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ON THE GENERALIZED DETERIORATED POSITIVE SEMI-DEFINITE AND SKEW-HERMITIAN SPLITTING PRECONDITIONER

Journal of Computational Mathematics 2019年第1期37卷 18-32页

作者： Davod Hezari Vahid Edalatpour Hadi Feyzollahzadeh Davod Khojasteh Salkuyeh Faculty of Mathematical sciences University of GuilanRashtIran Department of Mathematical and Computer Science Technical Faculty University of BonabBonabIran facultty of Mathematical sciences University of Guilan.RashtIvan

For nonsymmetric saddle point problems,Huang et *** [***.75 (2017), pp.1161-1191]established a generalized variant of the deteriorated positive semi-definite and skew-Hermitian splitting (GVDPSS)preconditioner to expedite the convergence speed of the Krylov subspace iteration methods like the GMRES *** this paper,some new convergence properties as well as some new numerical results are presented to validate the theoretical results.

关键词： Saddle point problem Preeonditioner Nonsymmetric Symmetric Positive definite Krylov subspaee method

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Maternal Hospital Mortality in Cotonou: Incidence, Care-Associated Adverse Events and Causes

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Open Journal of Obstetrics and Gynecology 2023年第10期13卷 1688-1698页

作者： Djima Patrice Dangbemey Cedric Bigot Ogourindé Mathieu Ogoudjobi Moufalilou Aboubakar Raoul Atade Paterne Kpoviessi Hounkpatin Benjamin Christiane Tshabu-Aguemon Josiane Angeline Tonato-Bagnan Justin Lewis Denakpo facultty of health sciences Abomey-Calavi University Abomey-Calavi Benin Gynecology-Obstétrics Department Hospital and University Center for Mother and Child Lagune Cotonou Benin University Clinic of Gynecology and Obstetrics of the CNHU-HLM Cotonou Benin Nursing and Midwifery Training Institute University of Parakou Parakou Benin

Introduction: Despite the many efforts made to combat preventable maternal deaths, these still remain high in Benin. It was therefore important to revisit the causes but especially the adverse events associated with care (EIS) in maternity. Objective: Determine the incidence, adverse events associated with care and causes of intra hospital maternal mortality in cotonou. Methods: This was a cross-sectional maternal mortality review study with retrospective data collection. It covered all cases of maternal death recorded between 2017 and 2021 in two (2) reference university maternities in Cotonou. Adverse events associated with care and the patient were analyzed using the maternal death audit grid validated for Benin. SPSS.26 software was used for data analysis. Results: The in-hospital maternal mortality ratio in Cotonou was 2028 maternal deaths per 100,000 live births in 2021. Only 7.2% (n = 36) of deaths were audited. The deceased mothers were 29.8 ± 7.4 years old, with no fixed monthly income in 82.7% (n = 420). Serious adverse events associated with care were: delay in decision to refer in 37% (n = 188), non-medical referral in 85.8% (n = 436) of cases, inadequate pre-referral treatment in 25.7% of cases. In receiving maternities, delay in diagnosis and inappropriate treatment at the receiving maternity were noted respectively in 22.9% and 28.6% of cases of maternal death. The direct causes of maternal death were dominated by serious obstetric hemorrhage in 43.9% (n = 223). As for the indirect causes, they were dominated by anemia excluding obstetric hemorrhages in 21.5% (n = 109). Conclusion: The in-hospital maternal mortality ratio was very high in Cotonou. The main cause was severe obstetric hemorrhage. There were several serious healthcare-associated adverse events whose correct management would significantly reduce the incidence of maternal deaths.

关键词： Maternal Mortality Adverse Events Care Cotonou

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