Population
renal failure, claustrophobia
RENAL FAILURE
This single-center study was conducted between January and December 2021 as a substudy to the POTCAST trial at the Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark. Details, background and design of the ongoing POTCAST trial have been published previously [Inclusion criteria for the main trial are a baseline p-K ≤4.3 mmol/l, age ≥18 years, and treatment with an ICD in accordance with clinical guidelines. Patients are excluded if they have severe renal failure (estimated glomerular filtration rate below 30 ml/min/1.73 mCriteria for inclusion in the present substudy were similar, except a baseline p-K ≤4.0 mmol/l. We excluded patients with claustrophobia and patients undergoing radiation treatment (e.g., radioiodine therapy) six months prior or nuclear medicine imaging three months prior to inclusion to avoid interference with the Whole-Body-Counter.