Results 11 to 20 of about 853,262 (156)

Implications of fetal premature atrial contractions: systematic review

open access: yesUltrasound in Obstetrics &Gynecology, Volume 60, Issue 6, Page 721-730, December 2022., 2022
ABSTRACT Objective Fetal heart‐rate irregularities occur in 1–2% of pregnancies and are usually caused by premature atrial contractions (PAC). Although PAC are considered benign, they may be associated with cardiac defects and tachyarrhythmia. We aimed to determine the incidence of congenital heart defects (CHDs) and complications in fetuses with PAC ...
B. B. Bet   +6 more
wiley   +1 more source

The prenatal video‐feedback intervention to promote positive parenting for expectant fathers (VIPP‐PRE): Two case studies

open access: yesInfant Mental Health Journal: Infancy and Early Childhood, Volume 43, Issue 5, Page 730-743, September 2022., 2022
Abstract Although parenting interventions including expectant fathers are scarce, they yield promising results. The Prenatal Video‐feedback Intervention to promote Positive Parenting (VIPP‐PRE) is a recently developed intervention, that is both manualized and personalized, aiming to enhance paternal sensitivity and involvement before the birth of the ...
Noor de Waal   +4 more
wiley   +1 more source

Consensus on revised definitions of Morphological Uterus Sonographic Assessment (MUSA) features of adenomyosis: results of modified Delphi procedure

open access: yesUltrasound in Obstetrics &Gynecology, Volume 60, Issue 1, Page 118-131, July 2022., 2022
ABSTRACT Objectives To evaluate whether the Morphological Uterus Sonographic Assessment (MUSA) features of adenomyosis need to be better defined and, if deemed necessary, to reach consensus on the updated definitions. Methods A modified Delphi procedure was performed among European gynecologists with expertise in ultrasound diagnosis of adenomyosis. To
M. J. Harmsen   +17 more
wiley   +1 more source

Value of cervical electrical impedance spectroscopy to predict spontaneous preterm delivery in asymptomatic women: the ECCLIPPx prospective cohort study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 58, Issue 2, Page 293-302, August 2021., 2021
ABSTRACT Objectives Preterm birth (PTB) accounts for two‐thirds of deaths of structurally normal babies and is associated with substantial lifetime healthcare costs. Prevention of PTB remains limited by the modest accuracy of prediction methods, namely transvaginal ultrasound (TVS) cervical length (CL) measurement and quantitative cervicovaginal fetal ...
D. O. C. Anumba   +4 more
wiley   +1 more source

Comparative analysis of 2‐year outcomes in GRIT and TRUFFLE trials

open access: yesUltrasound in Obstetrics &Gynecology, Volume 55, Issue 1, Page 68-74, January 2020., 2020
ABSTRACT Objective To explore the effect on perinatal outcome of different fetal monitoring strategies for early‐onset fetal growth restriction (FGR). Methods This was a cohort analysis of individual participant data from two European multicenter trials of fetal monitoring methods for FGR: the Growth Restriction Intervention Study (GRIT) and the Trial ...
W. Ganzevoort   +164 more
wiley   +1 more source

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder – Chinese (Mandarin) translation

open access: yesDevelopmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019
目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua   +6 more
wiley   +1 more source

Undetected cases after implementation of first‐trimester anomaly scan in low‐risk population: insights from the IMITAS study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 27-33, January 2026.
ABSTRACT Objective To assess the effectiveness of the first‐trimester anomaly scan (FTAS) performed as part of a centrally steered national screening program in The Netherlands by investigating false‐negative cases with a fetal structural anomaly that was not detected at the FTAS.
K. Bronsgeest   +18 more
wiley   +1 more source

高频超声降解造纸黑液的研究

open access: yesGongye shui chuli, 2004
以武汉晨鸣纸业的黑液为研究对象,采用1040kHz的高频超声处理造纸黑液。考察了不同频率、饱和气体、离子强度、催化剂等对超声降解效果的影响。结果如下:(1)与低频超声相比,高频超声有更强的降解有机物的能力,在30min的反应时间内CODCr的去除率达到20.8%;(2)溶解气体的存在,有利于大分子有机物的降解;(3)加入适量的NaCl能强化超声降解效果;(4)TiO2的存在可提高超声降解效果。
吴晓辉, 周珊, 陆晓华
doaj  

经直肠超声与高频超声联合在肛周炎性疾病中的应用

open access: yesZhongguo shiyan zhenduanxue, 2019
目的分析经直肠超声与高频超声联合在肛周炎性疾病中的应用价值。方法选取2016年4月至2017年5月我院收治的肛周炎性疾病患者150例为研究对象,均行经直肠超声与高频超声联合检查,分析其影像特点,并以手术病理结果为准,分析经直肠超声与高频超声联合对肛周炎性疾病的诊断价值。结果单纯肛周脓肿超声表现为低回声区、边缘模糊、液性暗区、丰富血流信号,复杂脓肿则见不规则回声管道或不均质回声,无明显血流信号,如肛周脓肿合并肛瘘者脓肿呈低回声,合并2支瘘道通向体表;经直肠超声与高频超声联合诊断肛周脓肿Ⅰ型、Ⅱ型、Ⅲ型 ...
黄玲, 陈跃
doaj  

基于电力变压器噪声特性的声学超材料降噪方法

open access: yesGaoya dianqi, 2019
变压器噪声控制作为高压输变电工程中亟待解决的问题成为研究热点。文中对特高压变压器的噪声进行测量分析,得到变压器噪声的主频点。以设计具有通风、占用面积小、不导电不导磁、隔声性能好的声屏障为目标,借鉴希尔伯特射频天线结构,提出一种适用于变压器降噪的声学超材料结构。通过有限元数值模拟,研究了声学超材料单胞的隔声特性。在此基础上,选择声学超材料单胞的参数,使其共振频率点避开变压器噪声的主频点,获得了较高的传声损失。采用阻抗管实验测量了声学超材料在变压器噪声主频点的传声损失,结果表明 ...
王天正   +5 more
doaj  

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