全文获取类型
收费全文 | 36284篇 |
免费 | 2380篇 |
国内免费 | 973篇 |
专业分类
耳鼻咽喉 | 371篇 |
儿科学 | 1182篇 |
妇产科学 | 190篇 |
基础医学 | 1949篇 |
口腔科学 | 341篇 |
临床医学 | 9067篇 |
内科学 | 6735篇 |
皮肤病学 | 64篇 |
神经病学 | 1423篇 |
特种医学 | 2095篇 |
外国民族医学 | 2篇 |
外科学 | 2989篇 |
综合类 | 5609篇 |
预防医学 | 2852篇 |
眼科学 | 161篇 |
药学 | 2530篇 |
87篇 | |
中国医学 | 1222篇 |
肿瘤学 | 768篇 |
出版年
2024年 | 26篇 |
2023年 | 571篇 |
2022年 | 1151篇 |
2021年 | 1638篇 |
2020年 | 1654篇 |
2019年 | 1306篇 |
2018年 | 1279篇 |
2017年 | 1278篇 |
2016年 | 1299篇 |
2015年 | 1254篇 |
2014年 | 2709篇 |
2013年 | 3212篇 |
2012年 | 2316篇 |
2011年 | 2300篇 |
2010年 | 1900篇 |
2009年 | 1715篇 |
2008年 | 1723篇 |
2007年 | 1918篇 |
2006年 | 1649篇 |
2005年 | 1346篇 |
2004年 | 1029篇 |
2003年 | 907篇 |
2002年 | 713篇 |
2001年 | 713篇 |
2000年 | 550篇 |
1999年 | 479篇 |
1998年 | 369篇 |
1997年 | 336篇 |
1996年 | 226篇 |
1995年 | 294篇 |
1994年 | 236篇 |
1993年 | 176篇 |
1992年 | 179篇 |
1991年 | 137篇 |
1990年 | 124篇 |
1989年 | 109篇 |
1988年 | 111篇 |
1987年 | 95篇 |
1986年 | 68篇 |
1985年 | 87篇 |
1984年 | 73篇 |
1983年 | 27篇 |
1982年 | 83篇 |
1981年 | 51篇 |
1980年 | 42篇 |
1979年 | 46篇 |
1978年 | 34篇 |
1977年 | 34篇 |
1976年 | 23篇 |
1974年 | 12篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
《Revista portuguesa de cardiologia》2022,41(9):783-789
Amiodarone is the most potent antiarrhythmic drug available and is commonly prescribed to treat and prevent not only life-threatening ventricular arrhythmias but also atrial fibrillation (AF). The latest European Society of Cardiology AF guidelines state that amiodarone is recommended for long-term rhythm control in all AF patients but that other antiarrhythmic drugs should be considered first whenever possible, due to its extracardiac toxicity. In patients without significant or with only minimal structural heart disease, amiodarone is not listed as a possibility in their therapeutic scheme. Still, amiodarone is widely and liberally used, and is the most prescribed antiarrhythmic drug for patients with AF despite its high toxicity profile. Non-cardiovascular death was more frequent with amiodarone treatment than with a rate control strategy in AFFIRM, while meta-analyses suggest an association between amiodarone use in patients without structural heart disease and increased non-cardiovascular mortality. Severe or even fatal outcomes due to amiodarone may occur years after treatment initiation and are often not acknowledged by the prescribing physician, who may no longer be following the patient. The lack of widely accepted diagnostic criteria and symptom definitions may lead to underestimation of the incidence of severe side effects and of its toxicity. Unlike the underestimated risk of toxicity with amiodarone, severe complications associated with catheter ablation are usually directly ascribed to the treatment even by non-medical personnel, possibly resulting in overestimation of risks. This brief review will address the issue of amiodarone overuse and the frequent underestimation of its toxicity, while suggesting scenarios in which its use is entirely reasonable, and compare it with catheter ablation. 相似文献
2.
中国传统运动疗法作为极具特色的康养健身运动疗法,在防病治病中的宝贵价值备受国际康复医学界关注。而慢性筋骨病是骨伤科临床中的常见病、多发病与疑难杂病,临床呈现出“一大五多五高”的特征,成为当前重大的健康问题与临床防治研究课题。本文通过深入探究中国传统运动疗法特点以及其在慢性筋骨病康复中的应用原理、原则及优势作用,提出以传统运动疗法为依托,构建慢性筋骨病防病治病应用方法模式;以三因制宜为指导,构建医院-社区-团体-患者为一体的康复管理模式;以“治未病”工程为支撑,构建慢性筋骨病管理信息资源共享平台模式;为切实提高防、控、治的能力与水平找准抓手与路径,为构建慢性筋骨病康复模式提供新的思路与方向。 相似文献
3.
4.
5.
6.
7.
8.
9.
BackgroundPost-operative elderly hip fracture patients require significant rehabilitation. Nandrolone is an anabolic steroid used to promote muscle growth. This study aims to examine the effect of nandrolone in improving rehabilitation and quality of life in elderly female patients with hip fractures undergoing hemiarthroplasty.MethodsThis is a double-blinded prospective randomized-controlled-trial consisting of female patients above the age of 65 with an isolated neck of femur fracture planned for a hip hemiarthroplasty. Participants were randomized into two arms of the study – 50 mg intramuscular nandrolone vs normal saline placebo administered on post-operative day 0, and weeks 2, 6 and 12. The participants were followed up across a 1-year period following the surgery. Clinical outcomes such as time taken to achieve rehabilitation milestones, distance of ambulation and thigh muscle girth, and functional scoring with SF-36 questionnaire were recorded at intervals of 2, 6 and 12 weeks, 6 months and 1 year following the surgery.ResultsThere were a total of 23 subjects with 11 in the steroid group and 12 in the placebo group. There was no significant difference in demographics and injury patterns between both groups. There was no significant difference for time taken to achieve various rehabilitation milestones and distance of ambulation. SF-36 scores on discharge and at 1-year follow-up mark were comparable. There was no difference in the complication rate between both groups.ConclusionIntra-muscular Nandrolone after hip surgery in elderly female patients does not result in short to mid-term improved rehabilitation or functional outcomes. Nandrolone did not result in increased short-term complications after hip surgery.Level of evidenceI. 相似文献