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CompletedNCT04212533professorUpdated Dec 27, 2019

Preoperative Hypocalcaemia, a Comparative Clinical Trial

An interventional study of Vitamin D and rice starch tablets in Total Thyroidectomy, sponsored by Zagazig University. Completed at 1 site in Egypt. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-12-27.

Sponsored by Zagazig University · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 1 year 11 months after the study started (first participant enrolled Jan 2018, registered Dec 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
86
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

two groups of patients undergoing total thyroidectomy one group received calcium and vit d prophylaxis the other group received no prophylaxis the investigator measured calcium level post and preoperative and development of tetant was recorded

Read the detailed description

This study is randomized controlled trial carried out on 86 patients undergoing total thyroidectomy in the period between January 2018 and November 2019. Patients were randomly allocated into two groups each one 43 patients the first group is the supplementation group where patients received oral vitamin D 40000 IU and calcium tablets 1 g once before surgery.

Patient included in this study are those above 18 years old undergoing total thyroidectomy.

Patients excluded from this study are those with

  • Previous thyroid surgery
  • Malabsorption diseases
  • Pregnancy
  • Previous parathyroid disease or surgery
  • Vitamin D deficiency
  • Renal impairment
  • Hypo or hyper calcaemia
  • ASA class 3,4

all patients in this study were subjected to thorough history taking full clinical examination, body mass index calculation, proper assessment of the original thyroid disease requiring surgery, preoperative investigations done as usual in addition to serum calcium, serum magnesium, serum vitamin D and serum parathormon level.

Serum calcium and serum parathormon were tested after 6, 12 and 48 postoperative hours, patients were discharged on the third postoperative day except if further hospitalization was indicated, after discharge patients were followed up in the outpatient clinic by one of the surgical team, serum calcium and parathormon level were tested after1 months, 3 months and after 6th months.

The primary outcome of this study is the development of hypocalcaemia either clinically or laboratory.

Clinical hypocalcaemia means development of perioral and \ or acral tingling and numbness, twitches of the perioral region on tapping in front of the ear" Chvostec's sign'', muscle twitches and development of carpopedal spasm.

Laboratory hypocalcaemia means serum calcium level below 8.5 mg\dl. Secondary outcome is the postoperative parathormon level. Preoperative data, postoperative clinical follow up and laboratory data were collected and analyzed using SPSS 22 program package.

Principles of total thyroidectomy; Total thyroidectomy was performed under general anesthesia, through lower neck collar incision, skin and platysma muscle flap was raised till the thyroid cartilage, opening the midline raphe, exploration of each thyroid lobe and tracing the inferior thyroid artery while emerging from underneath the carotid artery, the inferior thyroid artery was identified with its branches supplying the parathyroid gland, which was identified and preserved with its blood supply, the recurrent laryngeal nerve was searched for in the triangle between the carotid artery , trachea and the inferior thyroid artery. The external laryngeal nerve was identified and preserved 1 cm superior to the upper thyroid pole. If radical thyroidectomy was deemed the same principles of preserving parathyroid glands and their blood supply, recurrent and external laryngeal nerves. If the surgeons ere sure of damaging or removing the parathyroid glands a half of one of them was minced and transplanted in the subcutaneous tissue of the left forearm

02

Conditions studied

  • Total Thyroidectomy

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Keywords

  • hypocalcaemia, thyroidectomy, vit D, calcium
03

In context

Hypocalcemia

83 studies on the registry are indexed under Hypocalcemia; 15 are open to participants now.

This study's enrollment of 86 is close to the median of 84 across 54 interventional studies indexed under Hypocalcemia.

Browse Hypocalcemia studies →

Lead sponsor

Zagazig University is the lead sponsor of 457 studies on the registry; 77 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

  • patient undergoing total thyroidectomy

Exclusion criteria

Exclusion Criteria:

  • Previous thyroid surgery
  • Malabsorption diseases
  • Pregnancy
  • Previous parathyroid disease or surgery
  • Vitamin D deficiency
  • Renal impairment
  • Hypo or hyper calcaemia
  • ASA class 3,4
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
86 participants (actual)

Study arms

  • Active comparator
    supplementation arm

    43 patients undergoing total thyroidectomy received 40000 IU vit D and once before operation and 500mg calcium tab 4 times in the day before surgery

    Dietary Supplement: Vitamin D

  • Active comparator
    non-supplementation arm

    43 patients undergoing total thyroidectomy received rice starch tablets /6 hrs in the day before surgery

    Dietary Supplement: rice starch tablets

Interventions

  • Dietary supplementVitamin D

    comparison between pre- and postoperative calcium and vitamin d level after vit d and calcium supplementation

    Also known as: calcium supplementation

  • Dietary supplementrice starch tablets

    rice starch tablets as placebo

06

What researchers measure

Primary outcomes

  1. number of participants with hypocalcemia

    calcium level below 8.5 mg\\dl measured by serum calcium assay

    Time frame: 24 hrs post operative

  2. number of participants with hypocalcaemia

    calcium level below 8.5 mg\\dl measured by serum calcium assay

    Time frame: after 7 days post operative

Secondary outcomes

  1. number of participants with decreased parathormone level below normal level

    level of parathormone below 10 pg/mL

    Time frame: ( 1st month post operative)

  2. number of participants with tetany

    development of tingling, numbness or carpopedal spasm measured by clinical examination and patient history

    Time frame: 1 week

07

Study locations

1 site
  • Zagazig Faculty of Medicine
    Zagazig, Sharqya 44519, Egypt
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jan 2018 to primary completion in Dec 2019, 23 months.

Of 18 interventional studies with no phase under Hypocalcemia, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 14 and three quarters within 47. This study's 23 months is close to that.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 22, 2019
First posted
Dec 27, 2019
StartActual
Jan 1, 2018
Primary completionActual
Dec 15, 2019
CompletionActual
Dec 15, 2019
Last update
Dec 27, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 27, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04212533
Lead sponsor
Zagazig University
Responsible party
Hazem Nour Abdellatif (Assistant professor, Zagazig University) — Principal investigator
First posted
Dec 27, 2019
Start date
Jan 1, 2018
Primary completion
Dec 15, 2019
Completion
Dec 15, 2019
Last update
Dec 27, 2019

Study contacts

hazem nour
principal investigator · zag university

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Vitamin D

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