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1.
Menopause ; 27(3): 269-277, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31913227

RESUMEN

OBJECTIVE: Vasomotor symptoms (VMS) are associated with decreased memory performance and alterations in brain function. We conducted a preliminary examination of VMS and patterns of brain activity during a verbal memory task to provide insights into the VMS-related brain mechanisms that can contribute to memory problems in midlife women. METHODS: Fourteen postmenopausal women (mean age 53.5, 64% African-American) with moderate-to-severe VMS (>35/wk) and not taking hormone therapy completed functional magnetic resonance imaging (fMRI) assessments during word encoding and recognition, 24-hour physiologic VMS monitoring, symptom questionnaires, and two verbal memory tests. RESULTS: In regression analyses, a higher number of physiologic VMS, but not reported VMS, was associated with worse verbal memory on immediate and delayed logical memory (r = 0.53 and r = 0.72, P < 0.05). On fMRI assessments, a higher number of physiologic VMS, but not subjective VMS, was associated with greater activation in the left orbitofrontal cortex, left medial and superior frontal gyrus, right superior frontal gyrus, and right parahippocampal gyrus during the encoding task (P < 0.005). During the recognition task, physiologic VMS were associated with greater activation in the left medial and superior frontal gyrus, left parahippocampal gyrus and hippocampus, right medial and superior frontal gyrus, right parahippocampal gyrus and hippocampus (P < 0.005), and with decreased activation in the ventral medial prefrontal cortex (P < 0.005). Those associations were independent of symptoms and hormone levels. CONCLUSIONS: Preliminary data suggest that VMS may contribute to memory performance through effects on the hippocampus and prefrontal cortex. Larger studies are warranted to determine the robustness of these initial observations. : Video Summary:http://links.lww.com/MENO/A508.


Video Summary:http://links.lww.com/MENO/A508.


Asunto(s)
Sofocos/fisiopatología , Trastornos de la Memoria/fisiopatología , Posmenopausia/psicología , Femenino , Hipocampo/fisiopatología , Sofocos/psicología , Humanos , Imagen por Resonancia Magnética , Memoria/fisiología , Trastornos de la Memoria/etiología , Persona de Mediana Edad , Corteza Prefrontal/fisiopatología , Análisis y Desempeño de Tareas , Sistema Vasomotor/fisiopatología , Aprendizaje Verbal
2.
Am J Obstet Gynecol ; 213(5): 676.e1-7, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26196456

RESUMEN

OBJECTIVE: Despite significant proposed benefits, delayed umbilical cord clamping (DCC) is not practiced widely in preterm infants largely because of the question of feasibility of the procedure and uncertainty regarding the magnitude of the reported benefits, especially intraventricular hemorrhage (IVH) vs the adverse consequences of delaying the neonatal resuscitation. The objective of this study was to determine whether implementation of the protocol-driven DCC process in our institution would reduce the incidence of IVH in very preterm infants without adverse consequences. STUDY DESIGN: We implemented a quality improvement process for DCC the started in August 2013 in infants born at ≤32 weeks' gestational age. Eligible infants were left attached to the placenta for 45 seconds after birth. Neonatal process and outcome data were collected until discharge. We compared infants who received DCC who were born between August 2013 and August 2014 with a historic cohort of infants who were born between August 2012 and August 2013, who were eligible to receive DCC, but whose cord was clamped immediately after birth, because they were born before the protocol implementation. RESULTS: DCC was performed on all the 60 eligible infants; 88 infants were identified as historic control subjects. Gestational age, birthweight, and other demographic variables were similar between both groups. There were no differences in Apgar scores or admission temperature, but significantly fewer infants in the DCC cohort were intubated in delivery room, had respiratory distress syndrome, or received red blood cell transfusions in the first week of life compared with the historic cohort. A significant reduction was noted in the incidence of IVH in the DCC cohort compared with the historic control group (18.3% vs 35.2%). After adjustment for gestational age, an association was found between the incidence of IVH and DCC with IVH was significantly lower in the DCC cohort compared with the historic cohort; an odds ratio of 0.36 (95% confidence interval, 0.15-0.84; P < .05). There were no significant differences in deaths and other major morbidities. CONCLUSION: DCC, as performed in our institution, was associated with significant reduction in IVH and early red blood cell transfusions. DCC in very preterm infants appears to be safe, feasible, and effective with no adverse consequences.


Asunto(s)
Hemorragia Cerebral/prevención & control , Parto Obstétrico/métodos , Cordón Umbilical , Displasia Broncopulmonar/prevención & control , Hemorragia Cerebral/epidemiología , Protocolos Clínicos , Constricción , Transfusión de Eritrocitos/estadística & datos numéricos , Femenino , Humanos , Incidencia , Recien Nacido Prematuro , Masculino , Estudios Prospectivos , Factores de Tiempo
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