Perioperative Parathormone Measurement and Sodium Bicarbonate Infusion Test After Total Thyroidectomy

NCT ID: NCT00793689

Last Updated: 2009-10-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

127 participants

Study Classification

OBSERVATIONAL

Study Start Date

2008-03-31

Study Completion Date

2009-10-31

Brief Summary

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In the study will be included patients that have undergone total thyroidectomy and do not display obvious clinical or laboratory hypoparathyroidism. On the third postoperative day and before the patient's exit from the hospital, the patient will undergo an intravenous infusion test with 35ml/m2 dilution of 8.4%(w/v) sodium bicarbonate in two minutes. Three months after the operation, if the study conditions are still met, the patient will undergo an additional parathyroid hormone (PTH) measurement and sodium bicarbonate infusion test and the parathyroid function will be evaluated again.

Detailed Description

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Each patient will undergo a thorough preoperative examination for the presence of abnormalities in calcium, phosphate or magnesium metabolism as a consequence of a primary or a secondary disease.

Blood samples will be taken right before the beginning of the thyroidectomy, and 20 minutes after the end, to measure the PTH levels and to evaluate the variation rate.

On the third postoperative day and before the patient's exit from the hospital, the patient will undergo an intravenous infusion test with 35ml/m2 dilution of 8.4%(w/v) sodium bicarbonate in two minutes. Blood samples will be collected from a different vein at 0, 3, 5, 10, 30 and 60 minutes after infusion to measure PTH, calcium, phosphate and magnesium.

Three months after the operation, if the study conditions are still met, the patient will undergo an additional PTH measurement and sodium bicarbonate infusion test and the parathyroid function will be evaluated again.

In addition, the test will be performed on 50 healthy volunteers, in order to assess the response to the test of normal individuals.

Conditions

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Hypoparathyroidism

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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total thyroidectomy

patients undergoing total thyroidectomy

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

1. Patient is over 18 years old
2. Patient scheduled for total thyroidectomy
3. Patient signs and dates a written informed consent form (ICF) and indicates an understanding of the study procedures


1. Participant is over 18 years old
2. Participant signs and dates a written informed consent form (ICF) and indicates an understanding of the study procedures

Exclusion Criteria

1. Primary hyperparathyroidism
2. Primary hypoparathyroidism
3. Diabetes mellitus
4. Chronic Renal Failure
5. Hypoalbuminemia
6. Systematic Diseases (e.g., infections, neoplasmas)
7. Thyroid or parathyroid cancer
8. Osteoporosis
9. Drugs that influence calcium metabolism (vitamin D analogues, oral calcium supplements, biphosphonates, teriparatide, thiazide diuretics)
10. Osteomalacia
11. Neck irradiation


1\. All the above mentioned, in addition to prior thyroid surgery.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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AHEPA University Hospital

OTHER

Sponsor Role collaborator

Aristotle University Of Thessaloniki

OTHER

Sponsor Role lead

Responsible Party

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Aristotle University Of Thessaloniki

Principal Investigators

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John G Yovos, MD, PhD

Role: STUDY_DIRECTOR

Aristotle University Of Thessaloniki

Locations

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AHEPA University Hospital

Thessaloniki, , Greece

Site Status

Countries

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Greece

References

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Warren FM, Andersen PE, Wax MK, Cohen JI. Perioperative parathyroid hormone levels in thyroid surgery: preliminary report. Laryngoscope. 2004 Apr;114(4):689-93. doi: 10.1097/00005537-200404000-00017.

Reference Type BACKGROUND
PMID: 15064625 (View on PubMed)

Iwasaki Y, Mutsuga N, Yamamori E, Kakita A, Oiso Y, Imai T, Funahashi H, Tanaka Y, Kondo K, Nakashima N. Sodium bicarbonate infusion test: a new method for evaluating parathyroid function. Endocr J. 2003 Oct;50(5):545-51. doi: 10.1507/endocrj.50.545.

Reference Type BACKGROUND
PMID: 14614210 (View on PubMed)

Other Identifiers

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APC00994614

Identifier Type: -

Identifier Source: org_study_id

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