Lead Sponsor

University of California, San Francisco

Age

6 - 20 years

Sex

ALL

Healthy Volunteers

No

•Pediatric patients, male and female, aged 6-20 years.
•Chronic kidney disease stages 2-4 and ESRD on peritoneal dialysis or hemodialysis and kidney transplantation.
•Patients who can follow simple commands.
•English and Spanish speaking only.

•Patients hospitalized in the past 1 month.
•Patients hospitalized in the past I month for infection.
•Patients hospitalized in the past 1 month post peritoneal or hemodialysis catheter placement for the first time.
•1 month after starting renal replacement therapy for the first time.
•3 months post kidney transplantation.
•In the opinion of the investigator too ill to participate.
•Unwilling to participate.
•Language barrier.
•Patient with any signs of active infection, shortness of breath, trauma or injury to the legs or feet or those undergoing cardiac evaluation.
•Patients unable to verbalize discomfort or developmental delay will not be included.
•Patients with respiratory distress or on oxygen will be excluded.
•Parents or subjects unable to afford transportation for the 2 scheduled visits will also be excluded.