Evidence map›Paper›PMID 23532602›Full record

Trial reportWorld journal of surgery2013

Does preoperative 25-hydroxyvitamin D status significantly affect the calcium kinetics after total thyroidectomy?

Brian Hung-Hin Lang, Kai Pun Wong, Chung Yeung Cheung, Yuen Ki Fong, Desmond Kwan-Kit Chan, Grace Kin-Yee Hung

Abstract readClinical Trial
PubMed Publisher
In one paragraph

Trial report in World journal of surgery, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed.

  1. Trial
  2. Article
  3. Does Vitamin D Deficiency Really Increase the Risk of Post-surgical Hypoparathyroidism?Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2023
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. [Prophylaxis of postoperative hypoparathyroidism by intravenous administration of calcium gluconate].Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen · 2018
    Article
  9. Review
  10. A Case of "Late" Postsurgical Hypoparathyroidism.Case reports in endocrinology · 2017
    Article
  11. Observational
  12. [Surgical assessment of complications after thyroid gland operations].Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen · 2015
    Review
  13. Article
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Brian Hung-Hin LangDivision of Endocrine Surgery, Department of Surgery, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong SAR, China. blang@hkucc.hku.hk
Kai Pun Wong
Chung Yeung Cheung
Yuen Ki Fong
Desmond Kwan-Kit Chan
Grace Kin-Yee Hung

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough previous studies have suggested that low preoperative 25-hydroxyvitamin D (25-OHD) is a risk factor for hypocalcemia after total thyroidectomy, the impact of preoperative 25-OHD on calcium (Ca)/parathyroid hormone (PTH) kinetics in the immediate postoperative period remains unclear. The study compared the postoperative Ca/PTH kinetics between different preoperative 25-OHD levels. PATIENTS: A total of 281 patients who underwent a total thyroidectomy were analyzed. Serum Ca was measured preoperatively within 1 h after surgery (Ca-D0) and on the following morning (Ca-D1). Preoperative 25-OHD was also measured after overnight fasting while postoperative PTH was checked at skin closure on day 0 (PTH-D0) and on the following morning on day 1 (PTH-D1). The Ca/PTH kinetics were compared between three groups (group I: preoperative 25-OHD < 10 ng/mL; group II: 25-OHD = 10-20 ng/mL; group III: 25-OHD > 20 ng/mL).

resultsGroup I had significantly lower preoperative Ca (p = 0.016) and Ca-D0 (p = 0.036) but higher PTH-D1 (p = 0.015) than groups II and III. PTH-D0, Ca-D1, and the rate of clinically significant hypocalcemia were similar in the three groups. Group I had a significantly smaller Ca drop (-0.02 vs. 0.01 and 0.02 mmol/L, p = 0.011) and a tendency for a significantly smaller PTH drop (0.4 vs. 0.5 and 1.0 pmol/L, p = 0.073) than groups II and III. PTH-D1 (OR = 1.550) and 25-OHD (OR = 0.958) were independent factors for Ca drop from day 0 to day 1.

conclusionsAlthough group I began with lower serum Ca, those patients tended to have a greater PTH response to Ca drop and so preoperative 25-OHD did not significantly affect the overall Ca kinetics from preoperative to day 1.

Indexed as

Preoperative PeriodThyroidectomyAdultAgedAged, 80 and overBiomarkersCalciumCohort StudiesFemaleHumansHypocalcemiaLogistic ModelsMaleMiddle AgedParathyroid HormonePostoperative Complications25-hydroxyvitamin DBiomarkersCalciumParathyroid HormoneVitamin D

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.