Systematic Administration of Calcium and Vitamin D After Thyroidectomy

Study Overview
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Brief Summary
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Transient hypocalcaemia consist the most common postoperative complication after thyroidectomy (10-45%). It may be mild and subclinical or cause mild or severe symptoms and may lead to longer hospital stay as well as in discomfort of the patients. For the management oral or intravenous calcium with or without vitamin D administration can be used based on the blood calcium levels and on the symptomatology. The investigators intent to study a new protocol with oral calcium and vitamin D given systematically from the day of operation to assess if this practice can minimize the rate of transient hypocalcaemia and as a consequence minimize the length of stay in the hospital.

Detailed Description
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Transient hypocalcaemia consist the most common postoperative complication after thyroidectomy (10-45%). It may be mild and subclinical or cause mild or severe symptoms and may lead to longer hospital stay as well as in discomfort of the patients. For the management oral or intravenous calcium with or without vitamin D administration can be used based on the blood calcium levels and on the symptomatology. Group A = control group will be managed as usual. Oral or IV supplements of Calcium will be giver on demand and recorded according to the clinical picture or the biochemical hypocalcaemia. Group B= study group will be given systematically from the day of operation a scheme with oral calcium in the form of 1000ca++mg/tab and oral alfacalcidol in the form of 0.5 micrograms/tb The patients will receive one tablet three times a day oral calcium (3g/d) and 2 tablets , two times a day alfacalcidiol (2 micrograms/d) for the first 5 days. Afterwards they will be taking 2 tablets a day of oral calcium ( 2g) and 2 tablets a day alfacalcidiol (1micrograms/d) for another 10 days ( total 15 days) The investigators intent to minimize the immediate transient hypocalcaemia rate and give time to the parathyroids which may have been bruised or have compromised function initially to recover by day 15. The 1st and 2nd postoperative day the invastigators are going to take blood samples and assess the 25 hydroxy vit D, the parathyroid hormone (PTH) and the Ca++. The investigators will also assess the calcium levels after the first week and if necessary ( in cases with longstanding hypocalcaemia ) in later day. The patients will be discharged from the hospital the day after the operation provided the calcium levels are within normal range and they are completely asymptomatic. In case of symptoms after the discharge the patients will be managed accordingly and this will be recorded in the records of each patient

Official Title
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Systematic Administration vs on Demand Administration of Calcium and Vitamin D After Thyroidectomy. A Randomized Control Trial

Conditions
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Thyroid Diseases

Intervention / Treatment
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* Drug: Prophylactic protocol with Ca and Vit D


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Thyroid pathology only No calcium metabolism problems Total / near total thyroidectomy Exclusion Criteria: Renal failure, Secondary hyperparathyroidism, Primary hyperparathyroidism, thyroid lobectomy, Thyroid reoperation

Ages Eligible for Study
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Minimum Age: 15 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Randomized control trial - control group ( supplements of calcium and vit D on demand) vs study group ( systematic administration of oral calcium and vit D )
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: Control Group<br>Patients after thyroidectomy will be managed as usual. Oral or IV supplements of Calcium will be giver on demand and recorded according to the clinical picture or the biochemical hypocalcaemia. | |
| Experimental: Study group<br>Intervention: the patients will be given prophylactically ca and vit D. Patients after thyroidectomy will be given systematically from the day of operation a scheme with oral calcium in the form of 1000ca++mg/tab and oral alfacalcidol in the form of 0.5 micrograms/tb Intervention: The patients will receive one tablet three times a day oral calcium (3g/d) and 2 tablets , two times a day alfacalcidiol (2 micrograms/d) for the first 5 days. Afterwards they will be taking 2 tablets a day of oral calcium ( 2g) and 2 tablets a day alfacalcidiol (1micrograms/d) for another 10 days ( total 15 days) | Drug: Prophylactic protocol with Ca and Vit D<br>* 3g calcium /day for 5 days and then 2g/day for 10 days 2 Micrograms Alfacalcidol/day and then 1 microgram /day for 10 days the Prophylactic protocol with Ca and Vit D will be given in the form of Alfacalcidol 0.5 Micrograms Capsule and CALCIUM CARBONATE + CALCIUM GALACTOGLUCONATE 1000mg tablet<br>* Other names: one-alfa and mega calcium;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| blood calcium levels (mg/dl) on the 1st postoperative day | blood calcium measured in a blood sample in mg/dl | From the end of the operation until 24 hours after the operation | 
| blood calcium levels (mg/dl) on the 2nd postoperative day | blood calcium measured in a blood sample in mg/dl | From the end of the operation until 48 hours after the operation | 
| Length of hospital stay in days | how many days the patient remained in the hospital | From the day of the operation until a week after the operation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Overall cost of the treatment ( euros) | how did this practice affected the cost of treatment of the patients | From the day of the operation until a month from the operation |