An observational study in Heart Failure, Atrial Fibrillation (AF) and Arrhythmia, sponsored by Medical University of Sofia. Completed at 1 site in Bulgaria. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-10-13.
Sponsored by Medical University of Sofia · Observational
Patients with primary hyperparathyroidism versus healthy controls assessed for their cardiovascular risk and overt CVD
A cross-sectional, non-interventional single-center study includding 54 patients with primary hyperparathyroidism and 23 healthy controls. The participants have been examined clinically and with certain instrumental investigations: laboratorys, ECG, Holter ECG echocardiography. We have evaluated comparatively the cardiovascular risk and the over cardiac events in both groups and sought for determinants of cardiaovascular complications in primary hyperparathyoridism.
5,803 studies on the registry are indexed under Heart Failure; 1,222 are open to participants now.
This study's enrollment of 77 is below the median of 200 across 1,719 observational studies indexed under Heart Failure.
Browse Heart Failure studies →Medical University of Sofia is the lead sponsor of 12 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
54 patients with PHPT and 23 controls
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
confirmed primary hyperparathyroidism
Exclusion Criteria:
secondary hyperparathyroidism
Patients with primary hyoerparathyroidism
Patients withthout primary pyperparathyroidism mateched for age and sex
Cardiovascular events
Any cardiac events
Time frame: 24 months
Cardiovascular complications
Any cardiovascular disease
Time frame: january 1st 2023 - december 31st 2025
Plan to share: Yes
Supporting information: Study protocol, Informed consent form
Time frame: 31 Aug 2026
No publications or documents are linked to this record.
Ran from Jan 2023 to primary completion in Dec 2025, 35 months.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Medical University of Sofia