Paediatric intensive care units (PICUs) survivors and their families often experience widespread morbidity and psychosocial consequences after discharge, known as post-intensive care syndrome in paediatrics (PICS-p). In Switzerland, more than 5000 children are admitted to PICUs each year, and despite the high survival rate, there are no data on post-PICU recovery. This study aims to investigate PICS in children and families and identify its associated factors.

This is a national, multicentre, longitudinal, observational study that includes PICU survivors, main family caregivers and siblings (n=1300) recruited from the eight Swiss accredited PICUs with follow-up at discharge, 1, 3 and 6 months after discharge from the PICU. Data will be collected on the domains of physical, emotional, social and cognitive health, as well as factors affecting the outcome related to demographics, clinical specification, PICU and family environment, as well as community and social resources. Structural equation models and growth mixture models will analyse the outcomes, and the heterogeneity of recovery that shed light on the diverse recovery experiences of children and their families. The study identifies risk and protective factors with a focus on the influence of social and familial resources. It will also explore the mutual impact of the child’s recovery and parent/sibling psychosocial health.

The protocol is approved by the CER-VD ethics committee. Participants will be provided with verbal and written explanations of the study, and their privacy and anonymity will be protected throughout the process. The results will be presented at local and international conferences.

Swiss ethics committees ID: 2022-02128, representing the eight cantons for both French and German-speaking parts of Switzerland.

Evidence linking dietary potassium and serum potassium is virtually scarce and inconclusive. The aim of the study was to investigate the association between serum potassium level and potassium intake measured by 24-hour urine. We also explored whether the association differed across health conditions.

A cross-sectional study conducted from September 2017 to March 2018.

48 residential elderly care facilities in northern China.

Participants aged 55 years and older and with both serum potassium and 24-hour urinary potassium measured were classified as having a low (apparently healthy), moderate (with ≥1 health condition but normal renal function) and high (with ≥1 health condition and abnormal renal function) risk of hyperkalaemia.

Potassium intake is measured by 24-hour urinary potassium.

Serum potassium in association with potassium intake after adjustment for age, sex, region and accounting for the cluster effect.

Of 962 eligible participants (mean age 69.1 years, 86.8% men), 17.3% were at low risk, 48.4% at moderate risk and 34.3% at high risk of hyperkalaemia. Serum potassium was weakly associated with 24-hour urinary potassium among individuals with moderate (adjusted β=0.0040/L; p=0.017) and high (adjusted β=0.0078/L; p=0.003) but not low (adjusted β=0.0018/L; p=0.311) risk of hyperkalaemia.

A weak association between dietary potassium intake and serum potassium level existed only among individuals with impaired renal function or other health conditions but not among apparently healthy individuals. The results imply that increasing dietary potassium intake may slightly increase the risk of hyperkalaemia but may also decrease the risk of hypokalaemia in unhealthy individuals, both of which have important health concerns.

NCT03290716; Post-results.