Objective To investigate the post-traumatic growth status of breast cancer patients and their spouses，and to explore the effect of the positive psychological capital of patients and spouses on their own and each other’s post-traumatic growth. Methods From March to June 2021，a total of 130 pairs of female breast cancer patients and their spouses in a tertiary hospital in Tianjin were investigated by convenience sampling method and completed the investigation，using the general information questionnaire，Posttraumatic Growth Inventory，and Positive Psychological Capital Scale. Results The posttraumatic growth scores of breast cancer patients and their spouses of（2.43±1.11）（2.34±1.27） were significantly lower than the theoretical median value of 3.5，which were in the lower middle level（P<0.001）. The total score of positive psychological capital of patients was lower than that of spouses（P=0.033）. In the dimension of patients’ positive psychological capital，the level of resilience was relatively low. Subject-object interdependence model analysis showed that the positive psychological capital of patients and their spouses positively predicted their posttraumatic growth（Ps<0.001）. Positive psychological capital positively predicted the posttraumatic growth of spouses in breast cancer patients（P<0.05），but the partner effect on spouses was not significant（P>0.05）. Conclusion The posttraumatic growth level of breast cancer patients and their spouses is in the lower middle level. The level of patients’ resilience is relatively low. The partner effect of positive psychological capital of patients and spouses on posttraumatic growth is asymmetric，and the support of positive psychological capital of spouses and patients’ posttraumatic growth is insufficient.

Objective To investigate the current status of grip strength level in elderly patients with mechanical ventilation in ICU,and to explore its influencing factors. Methods The convenient sampling method was adopted to select 218 elderly mechanical ventilation patients in ICU of a tertiary hospital in Zhejiang Province as the research subjects from January 2020 to December,and researchers completed the cross-sectional study by using a general information questionnaire,an electronic grip strength device,and the Nutrition Risk Scaling 2002. Multivariate linear regression was used to analyse the factors influencing the grip strength level of elderly patients with mechanical ventilation. Results The average grip strength level of elderly patients with mechanical ventilation in ICU was（13.8±4.7） kg. Multivariate linear regression analysis showed that gender,age,exercise mode,time of sedative drugs,and score of Nutrition Risk Scaling 2002 were the main factors influencing their grip strength level（P<0.05）. Conclusion Grip strength levels were relatively low in elderly patients with mechanical ventilation in ICU. Grip strength levels were lower in patients with mechanical ventilation who were female,elderly,previously unexercised,the time of using sedation medication for >5 d,and the score of Nutrition Risk Scaling 2002≥3. Nursing staff should strengthen the dynamic evaluation of grip strength in patients with mechanical ventilation and control the related influencing factors.