- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03063060
The Impact of Vitamin D Deficiency on Hypocalcaemia Following Total Thyroidectomy
Post-operative hypocalcaemia following total thyroidectomy is a well-known complication and becoming a major area of research.
Many factors are assumed to increase the incidence of post-thyroidectomy hypocalcaemia, but the impact of vitamin D deficiency remains uncertain.
Since results so far were inconclusive, the goal in this study is to significantly determine the relation between those two factors.
This study is the first to deal with this issue through patients who underwent total thyroidectomy that was performed by the same surgeon and the same surgical technique.
A retrospective evaluation study of patients who underwent total thyroidectomy at the head and neck unit of the Otorhinolaryngology department at our institution between January 2013 and October 2016.
A total number of 60 patients underwent total thyroidectomy with available vitamin D levels before surgery, as well as pre and post-operative PTH and calcium levels.
Pre-operative vitamin D and PTH levels were checked within a maximum of one month duration before surgery.
All patients were operated by the same surgeon -Dr. Galit Avior-, with the same surgical technique.
The study involves access to the patients files and admission reports. In addition the investigators would like to be able to call the patients in order to ask them whether Vitamin D deficiency was corrected or not before their surgery, and If it was corrected then when exactly.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Background Post-operative hypocalcaemia following total thyroidectomy is a well-known complication and becoming a major area of research.
Many factors are assumed to increase the incidence of post-thyroidectomy hypocalcaemia, but the impact of vitamin D deficiency remains uncertain.
Vitamin D deficiency is known to be one of the most common medical conditions in the world.. Serum calcium is mainly regulated by parathyroid hormone (PTH) and vitamin D, therefore demonstration of a correlation between preoperative vitamin D levels and the occurrence of post thyroidectomy hypocalcaemia may reveal an easily correctable factor.
Recently, few studies have investigated whether preoperative vitamin D levels have any effect on post thyroidectomy hypocalcaemia. Some of them showed that patients with vitamin D deficiency were more likely to develop postoperative hypocalcaemia. In addition a significant decrease in postoperative hypocalcemia was shown in patients who received supplementation of vitamin D regardless of their vitamin D status, while others found no relationship between preoperative vitamin D concentrations and postoperative hypocalcaemia .
Since results so far were inconclusive, the goal in this study is to significantly determine the relation between those two factors.
This study is the first to deal with this issue through patients who underwent total thyroidectomy that was performed by the same surgeon and the same surgical technique.
Study objective
- To identify a correlation between pre-operative vitamin D deficiency and the occurrence of hypocalcaemia following total thyroidectomy.
- To determine wether the correction of vitamin D levels prior to the surgery was able to prevent post surgery hypocalcaemia.
Study design A retrospective evaluation study of patients who underwent total thyroidectomy at the head and neck unit of the Otorhinolaryngology department at our institution between January 2013 and October 2016.
A total number of 60 patients underwent total thyroidectomy with available vitamin D levels before surgery, as well as pre and post-operative PTH and calcium levels.
Pre-operative vitamin D and PTH levels were checked within a maximum of one month duration before surgery.
All patients were operated by the same surgeon -Dr. Galit Avior-, with the same surgical technique.
Methods:
The study involves access to the patients files and admission reports. In addition the investigators would like to be able to call the patients in order to ask them whether Vitamin D deficiency was corrected or not before their surgery, and If it was corrected then when exactly.
Study Type
Enrollment (Anticipated)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
A total number of 60 patients underwent total thyroidectomy with available vitamin D levels before surgery, as well as pre and post-operative PTH and calcium levels.
Pre-operative vitamin D and PTH levels were checked within a maximum of one month duration before surgery.
Description
Inclusion Criteria:
- Adult patients ≥ 18 years.
- Both males and females.
- Patients who underwent total thyroidectomy.
- Documented 25-hydroxyvitamin D level preoperatively.
- Documented calcium levels pre and postoperatively.
- Documented PTH levels pre and postoperatively.
Exclusion Criteria:
- Patients with either hypocalcaemia or hypercalcemia before surgery.
- Patients with Grave's disease.
- Patients with renal, lung or bone cancer.
- Pregnancy.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
total thyroidectomy
patients who underwent total thyroidectomy with available vitamin D levels before surgery, as well as pre and post-operative PTH and calcium levels.
|
observational
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Vitamin D levels
Time Frame: pre- operative vitamin D levels 1 month prior to surgery
|
ng/ml
|
pre- operative vitamin D levels 1 month prior to surgery
|
Calcium levels
Time Frame: post operative Ca levels at the day of the surgery
|
mg/dl
|
post operative Ca levels at the day of the surgery
|
Calcium levels
Time Frame: post operative Ca levels 1 day after the surgery
|
mg/dl
|
post operative Ca levels 1 day after the surgery
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (ANTICIPATED)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Metabolic Diseases
- Nutrition Disorders
- Avitaminosis
- Deficiency Diseases
- Malnutrition
- Calcium Metabolism Disorders
- Water-Electrolyte Imbalance
- Vitamin D Deficiency
- Hypocalcemia
- Physiological Effects of Drugs
- Micronutrients
- Vitamins
- Bone Density Conservation Agents
- Calcium-Regulating Hormones and Agents
- Vitamin D
- Calcium
Other Study ID Numbers
- 0014-17
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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