ArticleAmerican journal of nephrology2025
Association between Parathyroid Hormone Concentration and Incident Atrial Fibrillation in Older Persons with Kidney Failure Initiating Dialysis.
Article in American journal of nephrology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionAtrial fibrillation (AF) is common in persons with kidney failure on hemodialysis. In the general population, higher intact parathyroid hormone (iPTH) levels were found to be associated with presence of AF. Whether iPTH associates with AF in patients on hemodialysis is unknown.
methodsUsing merged USRDS-DaVita data (2006-2011), we selected persons aged 67+ years who initiated hemodialysis and survived 120 days. Eligible persons had continuous Medicare A + B coverage from 2 years prior to kidney failure and no diagnosis of AF. Sociodemographic, comorbidity, and clinical information were abstracted from Medicare forms, billing claims, and electronic health records. iPTH was categorized consistent with previous work: <150; 150 to <300; 300 to <600; and ≥600 pg/mL. Patients were followed for incident (i.e., newly diagnosed) AF as reflected in inpatient and outpatient claims. Unadjusted and multivariable Cox regression were used to estimate the associations of time-updated iPTH category (referent: 150 to <300 pg/mL) with incident AF.
resultsOf 15,225 patients initiating hemodialysis, surviving 120 days, and without a prior diagnosis of AF, iPTH (in pg/mL) at baseline was <150 in 4,479, 150 to <300 in 5,964, 300 to <600 in 3,479, and ≥600 in 1,064 persons. During 21,845 patient-years, 2,857 patients had incident AF (rate, 13.1/100 person-years). After multivariable adjustment, patients with iPTH <150 pg/mL had 13% (95% confidence interval [CI]: 3-25%) higher relative AF incidence compared with the 150 to <300 pg/mL group, but no association was found for those with iPTH 300 to <600 (hazard ratio [HR]: 1.04; 95% CI: 0.95-1.14) or iPTH ≥600 pg/mL (HR: 0.90; 95% CI: 0.75-1.08).
conclusionAmong persons with incident kidney failure on hemodialysis, compared with those whose iPTH was between 150 and <300 pg/mL, lower iPTH was independently associated with higher AF incidence; however, no association with AF was identified for higher iPTH levels.
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