Department of Cardiology Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300250 China;
Graduate School Tianjin University of Traditional Chinese Medicine Tianjin 301617 China;
Department of Cardiology Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300250 China;
Cluster nursing intervention; Central venous catheter-related infection; Intensive care unit; Meta-analysis;