To identify activities performed by Nursing Assistants in acute and primary healthcare.Systematic review.The databases MedLine/PubMed, ProQuest and Google Scholar were searched for empirical studies published in the English language between 2008 and 2018 that addressed the work of Nursing Assistants.From an initial yield of 2,944 publications, 71 publications were retained for full text review and 20 publications included in this review. Activities undertaken by Nursing Assistants from eight countries were extracted and categorized into one of six categories.Over 200 activities were identified as being delegated to Nurse Assistants globally. Many of these activities are beyond the training of the Nurse Assistant and are being performed with limited Registered Nurse supervision.Patient safety is at risk. Nurse Assistants' roles vary widely, with some seeing their role as similar to that of a regulated nurse, while recognizing their need for additional training.Over 31% of activities delegated to Nurse Assistants require skill and comprehension beyond their level of training. Patients and regulated nurses need to have confidence that Nursing Assistants responsible for care provision are appropriately trained and practicing within regulatory standards.目的: 了解助理护士在急性护理和初级保健领域所开展的活动。 设计: 系统综述。 数据来源: 在MedLine联机医学文献分析和检索系统/PubMed文献服务检索系统、ProQuest学位论文管理系统和Google Scholar谷歌学术搜索数据库中搜索2008年至2018年期间发表的涉及助理护理工作的英语类实证研究。 审查方法: 从最初的2944份发表文章中,保留了71份发表文章进行全文审查,最后选择出20份发表文章纳入本次的评价研究。从中摘取出8个国家助理护理所开展的活动,并划分六大类。 结果: 在全球范围内,指派被助理护士的活动识别出200多个。其中许多活动超出了助理护士的培训范畴,需要在注册护士有限的监督下进行。 结论: 他们的行为有可能危及患者的安全性。助理护士的职责存在广泛的差异,有些人认为其职责类似于规范的护士,但需要进行额外的培训。 影响: 分配给助理护士的31%以上的活动所需要的技能水平和理解力超出对其的培训内容。患者和规范化护士都应当坚定相信,负责提供护理的助理护士经过适当的培训,能够在规范化的标准下执业。.