Objective:To investigate the status of disaster preparedness of pediatric nurses and its influencing factors, as well as the impact path of psychological capital and perceived organizational support on disaster preparedness.Methods:This was a cross-sectional study. A total of 361 pediatric nurses from Henan Provincial People ′s Hospital, the Third Affiliated Hospital of Zhengzhou University, Fuwai Central China Cardiovascular Hospital were sampled from August to October 2021. They were investigated by the general information questionnaire, psychological capital questionnaire, perceived organizational support questionnaire and disaster preparedness questionnaire. SPSS25.0 was used to analyze the questionnaire and scale data, and AMOS23.0 was used to construct a structural equation model about the disaster preparedness of pediatric nurses. Results:The scores of disaster preparedness from pediatric nurses was 4.65 ± 0.92. The level of disaster preparedness was significantly positively correlated with psychological capital and perceived organizational support ( r=0.690, 0.525, both P<0.05). Disaster training and emergency drill 2 dimensions of psychological capital questionnaire (hope, resilience), perceived organizational support were independent contributing factors ( P<0.05). Psychological capital had direct effect on disaster preparedness. And the direct effect was 0.77, the indirect effect was 0.11, the total effect was 0.88, and the direct effect of perceived organizational support on disaster preparedness was 0.21. Conclusions:The score of disaster preparedness of pediatric nurses was in the middle level. Hospital managers should strengthen the training of pediatric nurses in disaster knowledge, operational and simulation exercise, pay attention to the level of nurses' psychological capital and perceived organizational support, so as to provide reference for the follow-up clinical pediatric disaster nursing education and management.

Objective:To explore the effects of planned aerobic-resistance exercise on nutritional status and intra-dialytic hypotension of maintenance hemodialysis (MHD) patients during dialysis.Methods:From January 2018 to October 2018, we selected 106 hemodialysis patients in the First Affiliated Hospital of Zhengzhou University by convenience sampling. All of patients were divided into control group and observation group with method of the random number table, 53 cases in each group. Control group carried out the routine management model. On the basis of that in control group, observation group implemented the planned aerobic-resistance exercise during dialysis for three months. We compared the hemoglobin (Hb) , serum prealbumin (PA) , body cell mass (BCM) , bone mineral content (BMC) , skeletal muscle content (SMC) , cardiopulmonary function and incidence of intra-dialytic hypotension of patients between two groups.Results:Three months after intervention, the Hb, PA, BCM, BMC and SMC of patients in observation group were (99.77±6.29) g/L, (344.55±37.12) mg/L, (31.42±3.15) kg, (3.08±0.41) kg and (27.85±2.51) kg respectively higher than those in control group with statistical differences ( P<0.05) ; the maximal oxygen uptake and left ventricular ejection fraction of observation group were (14.93±2.82) ml/ (kg·min) and (58.21±5.22) % respectively higher than those in control group with statistical differences ( P<0.05) . During intervention, the incidence of intra-dialytic hypotension of observation group was 9.05% (187/2 067) lower than that in control group [19.45% (402/2 067) ]with a statistical difference (χ 2=91.520, P<0.01) . Conclusions:Planned aerobic-resistance exercise during dialysis can improve the nutritional status, cardiopulmonary function and endurance of MHD patients, and reduce the incidence of intra-dialytic hypotension which is worthy of clinical promotion.