NCT07491601

Brief Summary

This study aims to investigate whether an earlier measurement of parathyroid hormone can reduce the number of patients who develop symptomatic hypoparathyroidism. This will provide evidence for a clear algorithm to address this issue after thyroid surgery. It will lead to an improvement in quality of life and a reduction in the distress experienced by affected patients. In addition, it is conceivable that patients' hospital stay could be shortened.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
336

participants targeted

Target at P75+ for not_applicable

Timeline
44mo left

Started Jan 2025

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress28%
Jan 2025Dec 2029

Study Start

First participant enrolled

January 8, 2025

Completed
11 months until next milestone

First Submitted

Initial submission to the registry

December 5, 2025

Completed
4 months until next milestone

First Posted

Study publicly available on registry

March 24, 2026

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2028

Expected
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2029

Last Updated

March 24, 2026

Status Verified

December 1, 2025

Enrollment Period

4 years

First QC Date

December 5, 2025

Last Update Submit

March 18, 2026

Conditions

Keywords

Thyroid surgeryPerioperative medicinePostoperative HypoparathyroidismCalcium supplementationActive Vitamin D supplementationQuality of life after surgeryPost-surgical Hypoparathyroidism

Outcome Measures

Primary Outcomes (1)

  • Symptomatic hypoparathyroidism (symptom score) with hypocalcemia

    Symptomatic hypoparathyroidism is defined as the presence of one or more symptoms reported in the questionnaire.

    within hospital stay (0-48hours after bilateral thyroid surgery)

Secondary Outcomes (4)

  • Length of Hospital stay

    up to 14 days after surgery, on average 2 days

  • Initation of substitution therapy with active vitamin D and calcium

    up to 6 months after surgery

  • Quality of life with changes in psychological burden

    up to 1 day before surgery or earlier and after 6 months after surgery

  • Patient readmission due to hypocalcemia with or without symptoms

    up to 6 months after surgery

Study Arms (2)

Standard of Care

SHAM COMPARATOR

Measurement of parathormone levels and calcium on postoperative day 1 (beginning at day 1 after surgery)

Drug: Active vitamin DDrug: Calcium

Early postoperative sampling of parathyroid hormone and Calcium (within 1-3 hours after surgery))

EXPERIMENTAL

Measurement of parahthyroid hormone and calcium within 1-3 hours post surgery

Drug: Active vitamin DDrug: Calcium

Interventions

Application if parathyroid hormone level falls below normal

Early postoperative sampling of parathyroid hormone and Calcium (within 1-3 hours after surgery))Standard of Care

Administered if parathyroid hormone level falls below normal

Early postoperative sampling of parathyroid hormone and Calcium (within 1-3 hours after surgery))Standard of Care

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥ 18 years
  • Thyroidectomy or bilateral thyroid resection of any indication
  • Written informed consent obtained after detailed patient information and provision of an information sheet

You may not qualify if:

  • Age ≤ 18 years
  • Concomitant parathyroid disease (primary or secondary hyperparathyroidism, pre-existing hypoparathyroidism of any cause)
  • Previous surgery in the neck region
  • Pregnancy or breastfeeding
  • Inability to attend study visits
  • Participation in another study that interferes with the endpoints
  • Missing or inadequate patient information

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Dept. Surgery I; University Hospital Wuerzburg

Würzburg, Bavaria, 97080, Germany

RECRUITING

MeSH Terms

Interventions

Calcium

Intervention Hierarchy (Ancestors)

Metals, Alkaline EarthElementsInorganic ChemicalsMetalsBlood Coagulation FactorsBiological Factors

Study Officials

  • Nicolas Schlegel, Prof. Dr. (MD)

    University Hospital Wuerzburg

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Nicolas Schlegel, Prof. Dr. (MD)

CONTACT

Nicole Kirschbauer, Study Nurse

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: This is a multicenter, two-arm, randomized interventional study. It is important to emphasize that patients receive the same diagnostics and treatment as currently standard practice. The only difference is that these are either performed earlier, depending on allocation to one of the study arms, or carried out at the usual time according to current practice.
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Prof. Dr. med. Nicolas Schlegel

Study Record Dates

First Submitted

December 5, 2025

First Posted

March 24, 2026

Study Start

January 8, 2025

Primary Completion (Estimated)

December 31, 2028

Study Completion (Estimated)

December 31, 2029

Last Updated

March 24, 2026

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will not share

Individual participant data will not be shared due to data protection regulations and lack of participant consent for data sharing

Locations