The Spanish Version of the Fear of Kidney Failure Questionnaire: Validity, Reliability, and Characterization of Living Donors With the Highest Fear of Kidney Failure.

Background: Measures of fear of progression or recurrence of illnesses have been criticized for neglecting cross-cultural validity. Therefore, we assessed the psychometric properties of the Spanish version of the Fear of Kidney Failure Questionnaire (FKFQ), to determine whether postdonation fear of kidney failure (FKF) influenced the donors' psychosocial status, and define variables that characterized donors with high FKFQ scores.

Methods: We included 492 participants (211 donors) in a multicenter, 11-year, retrospective, cross-sectional study.

Spontaneous remission of nephrotic syndrome in membranous nephropathy with chronic renal impairment.

Background: Spontaneous remission (SR) of nephrotic syndrome, in the absence of immunosuppressive treatment, is relatively common among patients with idiopathic membranous nephropathy (IMN) and normal renal function. However, it has not been reported in patients with chronic renal impairment.

Methods: All patients with IMN who had developed SR in the presence of chronic renal insufficiency were identified among the nephrology departments that belong to the Spanish Group for the Study of Glomerular Diseases (GLOSEN).

Spontaneous remission of nephrotic syndrome in idiopathic membranous nephropathy.

Spontaneous remission is a well known characteristic of idiopathic membranous nephropathy, but contemporary studies describing predictors of remission and long-term outcomes are lacking. We conducted a retrospective, multicenter cohort study of 328 patients with nephrotic syndrome resulting from idiopathic membranous nephropathy that initially received conservative therapy. Spontaneous remission occurred in 104 (32%) patients: proteinuria progressively declined after diagnosis until remission of disease at 14.