首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   326篇
  免费   17篇
  国内免费   4篇
耳鼻咽喉   4篇
儿科学   44篇
妇产科学   72篇
基础医学   6篇
口腔科学   1篇
临床医学   29篇
内科学   12篇
皮肤病学   1篇
神经病学   2篇
特种医学   1篇
外科学   18篇
综合类   76篇
预防医学   45篇
眼科学   2篇
药学   25篇
中国医学   6篇
肿瘤学   3篇
  2023年   4篇
  2022年   3篇
  2021年   11篇
  2020年   9篇
  2019年   9篇
  2018年   14篇
  2017年   15篇
  2016年   16篇
  2015年   11篇
  2014年   23篇
  2013年   27篇
  2012年   22篇
  2011年   19篇
  2010年   14篇
  2009年   17篇
  2008年   21篇
  2007年   15篇
  2006年   21篇
  2005年   12篇
  2004年   15篇
  2003年   5篇
  2002年   5篇
  2001年   2篇
  2000年   6篇
  1999年   2篇
  1998年   1篇
  1997年   6篇
  1996年   2篇
  1995年   1篇
  1994年   1篇
  1993年   2篇
  1992年   2篇
  1991年   2篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1985年   2篇
  1984年   1篇
  1983年   2篇
  1981年   1篇
  1978年   1篇
  1972年   1篇
排序方式: 共有347条查询结果,搜索用时 15 毫秒
1.
目的探讨纳美芬对新生儿重度窒息复苏效果的影响。方法选择2013年6月至2014年12月,手术室剖宫产产出后1 min(T_0)诊断为重度窒息的新生儿46例,随机分为2组,每组23例。同样的急救复苏流程后,观察组给予纳美芬治疗,对照组给予等量生理盐水,两组分别于首次用药后5 min(T_1)、15 min(T_2)和30 min(T_3)行Apgar评分,记录需辅助正压通气的例数和用时,观察用药3 d内的病情变化。结果两组Apgar评分在T_1~T_3时均高于T_0(P<0.01),观察组在T_1~T_3时高于对照组(P<0.05);观察组需辅助正压通气用时较对照组缩短(P<0.05);治疗3 d内,观察组原始反射异常和肌张力降低发生率均低于对照组(P<0.05),两组惊厥和死亡发生率比较差异无统计学意义(P>0.05)。结论纳美芬对新生儿重度窒息复苏的近期效果确切,呼吸恢复快,在某种程度上可以减轻脑缺氧损伤而改善预后。  相似文献   
2.
目的 探讨振幅整合脑电图能否作为早期诊断新生儿缺氧缺血性脑病(HIE)的依据.方法 选择新生儿HIE患儿46例为观察对象,分析aEEG异常程度与脐动脉血气pH值和BE值的相关性,同时分析其与Apgar评分及头颅MRI的相关性.结果 ①aEEG用于判断新生儿HIE的敏感性为70.8%,特异性为96.9%,说明aEEG的异常程度与HIE的分度存在有显著的相关性;②aEEG异常程度与脐动脉血气比较差异有统计学意义(P<0.05);③aEEG异常程度与Apgar评分比较差异有统计学意义(P<0.05);④aEEG异常程度与生后3~7d内的头颅MRI检查异常程度紧密相关.结论 新生儿HIE振幅整合脑电图异常程度与脐动脉血气pH值,Apgar评分及头颅MRI密切相关,可作为作为早期诊断新生儿HIE的依据之一.  相似文献   
3.
4.
ObjectivesTo explore the relationships among potentially modifiable factors related to childbirth and effective breastfeeding initiation at approximately 36 hours after birth and duration and exclusivity at hospital discharge, 2 weeks, 2 months, and 6 months after birth in primiparous women and to explore whether modifiable and nonmodifiable secondary factors and covariates influenced the relationships among factors related to childbirth and these breastfeeding outcomes.DesignA prospective, longitudinal, cohort study.SettingThe postpartum units of two general hospitals in eastern Canada.ParticipantsNinety-seven mother–infant dyads.MethodsWe recorded demographic, childbirth, obstetric history, and breastfeeding data through chart review. A breastfeeding observation was completed at approximately 36 hours after birth by unit nurses. Participants maintained breastfeeding logs in hospital and for 6 months after birth and completed three self-report questionnaires before discharge. We analyzed outcomes using backward stepwise linear and logistic regression.ResultsOne childbirth factor, labor induced with oxytocin, was negatively associated with effective initiation of breastfeeding, and none was related to breastfeeding duration and exclusivity at any time point. Maternal weight; professional support; and newborn’s gestational age at birth, 5-minute Apgar score, weight loss, LATCH score, and active feeds (newborn actively suckled at the breast) were significantly associated with breastfeeding outcomes.ConclusionInduction of labor with oxytocin should be used judiciously; when used, nurses must be hypervigilant to assess the mother–infant dyad for breastfeeding issues and to intervene to prevent or remediate them.  相似文献   
5.
目的 探讨椎管内麻醉镇痛分娩的优缺点及副作用发生率.方法 回顾性分析西安安琪儿妇产医院行镇痛分娩396例临床病例,比较腰硬联合麻醉(联合组)和硬膜外麻醉(硬外组)麻醉后在镇痛效果、产程进展、产后出血量、新生儿评分方面的情况;并分析麻醉后在催产素使用、发热、产后尿潴留率等副作用及中转剖宫产的发生率.结果 联合组镇痛起效时间明显短于硬外组(t=27.00,P<0.05),两组麻醉用于分娩镇痛效果均良好,VAS评分各时间点(5min、10min、30min、60min、90min)均无显著性差异(t值分别为1.41、0.71、1.46、1.54、1.75,均P>0.05).两组三产程进展、产后出血量、新生儿评分(t值分别是1.02、0.44、1.05、1.46、1.85、1.56,均P>0.05)均无影响.两组麻醉后催产素使用、产时发热、产后尿潴留等副作用和中转剖宫产的几率无显著性差异(x2值分别是0.00、0.10、0.08、0.05,均P>0.05).结论 腰硬联合麻醉的镇痛起效更快,麻醉后不增加催产素使用、产时发热、产后尿潴留率等副作用的发生几率.因此腰硬联合麻醉可广泛应用于分娩镇痛.  相似文献   
6.
7.
BackgroundObstetric anesthesia guidelines recommend regional over general anesthesia for most caesarean sections to decrease the risk for both fetus and mother.Aim of the workTo determine the effects of combined spinal epidural anesthesia and general anesthesia on the newborns and the mother undergoing elective cesarean section.SubjectsA total of 60 consecutive women with uncomplicated singleton pregnancies at term and scheduled to undergo elective cesarean section at Kasr Al-Aini obstetric hospital participated in this prospective study. The women were divided into 2 groups (each 30), a general anesthesia group (A) and combined spinal–epidural anesthesia group (B).MethodsUmbilical artery blood gas analysis and Apgar scores were assessed at 1 and 5 min after delivery in the newborn while systolic and diastolic blood pressure, heart rate, oxygen saturation and (capnography in general anesthesia) were measured preoperative and after 5, 10 and 15 min of induction of anesthesia in the mothers. In addition, the time from induction of anesthesia till delivery of the fetus and duration in operative room were measured.ResultsApgar score recorded statistically significant differences between the 2 groups at 1 min and 5 min, where with combined spinal–epidural anesthesia the Apgar score readings were higher than with general anesthesia. HCO3 readings showed a statistically significant difference between the 2 groups after 1 and 5 min, where the newborns in general anesthesia group had a statistically significant lower HCO3 compared to the newborns in combined spinal–epidural group. Patients in general anesthesia group were significantly more tachycardic compared to patients in combined spinal–epidural group.ConclusionCombined spinal–epidural anesthesia is safer on the newborn than general anesthesia regarding the APGAR scores and acid–base balance.  相似文献   
8.
目的 研究择期剖宫产及阴式分娩对新生儿Apgar评分、NBNA(新生儿神经行为测定)评分及免疫指标的影响.方法 选取我院产科出生的新生儿170例作为研究对象.按照分娩方式进行分组,其中择期剖宫产方式分娩新生儿归为观察组,阴式分娩新生儿归为对照组.对比两组新生儿出生后各时间点Apgar评分、出生后2天NBNA评分以及各免疫指标情况.结果 两组新生儿出生后1 min及5 min Apgar评分,组内及组间对比,差异均无统计学意义(P>0.05).两组新生儿出生后2d NBNA评分基础分及加分、向声源转头次数、手持握次数以及自动踏步步数对比,差异均无统计学意义(P> 0.05).观察组新生儿IgM、IgG及IgA水平均显著低于对照组,差异有统计学意义(P<0.05).结论 择期剖宫产及阴式分娩对于新生儿Apgar评分以及NBNA评分等影响均无显著差异,而择期剖宫产对新生儿免疫能力有降低作用,提升其患病危险.  相似文献   
9.
目的调查不同分娩时间产妇的一般情况及母婴并发症发生情况,以期为制定针对性措施提供临床依据。方法回顾性分析2014年1月至12月在上海交通大学医学院附属国际和平妇幼保健院妊娠28周以上、单胎头位、阴道分娩的产妇8931例的病史资料。根据分娩时间分为白班组(8:00-17:00)和中夜班组(17:00至次日8:00),比较两组产妇的一般情况、母婴分娩并发症的发生情况等。结果白班组与中夜班组分娩量以及产妇的一般情况的差异无统计学意义(P0.05)。中夜班时,急产的发生率为6.43%,明显高于白班;白班组,人工破膜、镇痛分娩、产钳助产、阴道切开、宫腔探查等助产操作比例明显高于中夜班组。两组产妇阴道血肿以及产后出血发生率的差异无统计学意义(P0.05),但中夜班分娩产妇产后2h发生产后出血比率明显高于白班(P0.05)。两组新生儿娩出5min Apgar评分差异无统计学意义(P0.05)。结论产房白班与中夜班的工作量相当,白班时产科助产操作比例更高,中夜班存在母婴安全的潜在危险因素。  相似文献   
10.
Objective: To estimate the association between gestational diabetes mellitus (GDM) and adverse pregnancy and neonatal outcomes in Denmark.

Methods: A population-based cohort study including all singleton pregnancies in Denmark from 2004 to 2010 (n?=?403?092). Maternal complications during pregnancy and delivery and fetal complications were classified according to the International Classification of Diseases 10th Revision.

Results: The final study population consisted of 398?623 women. Of these, 9014 (2.3%) had GDM. Data were adjusted for maternal age, parity, smoking, gestational age, birth weight, BMI, gender of the fetus and calendar year. The risk of preeclampsia, caesarean section (both planned and emergency) and shoulder dystocia was increased in women with GDM. In the unadjusted analysis, the risk of thrombosis was increased by a factor 2 in the GDM patients, but in the adjusted analysis this association disappeared. Post-partum hemorrhage was similar in the two groups. The GDM women had an increased risk of giving birth to a macrosomic neonate although the unadjusted analysis did not show any difference between the two groups. Low Apgar score was increased in the GDM, but this association disappeared in the adjusted analysis. Stillbirth was comparable in the two groups.

Conclusions: Women with GDM still have increased incidence of obstetric and neonatal complications, which could imply that treatment of women with GDM should be tightened.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号