Evidence map›Paper›PMID 25212835›Full record

ArticleAnnals of surgical oncology2015

Preventing postoperative hypocalcemia in patients with Graves disease: a prospective study.

Sarah C Oltmann, Andrew V Brekke, David F Schneider, Sarah C Schaefer, Herbert Chen, Rebecca S Sippel

Open access · greenAbstract read
In one paragraph

Article in Annals of surgical oncology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 8% of its field
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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 62 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Preoperative vitamin D administration does not affect rates of post-thyroidectomy hypocalcaemia.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Management of Graves Thyroidal and Extrathyroidal Disease: An Update.The Journal of clinical endocrinology and metabolism · 2020
    Review
  13. Role of Ca²⁺ in Inhibiting Ischemia-Induced Apoptosis of Parathyroid Gland Cells in New Zealand White Rabbits.Medical science monitor : international medical journal of experimental and clinical research · 2020
    Article
  14. Hyperthyroidism.Gland surgery · 2020
    Review
  15. Article
  16. Considerations for Thyroidectomy as Treatment for Graves Disease.Clinical medicine insights. Endocrinology and diabetes · 2019
    Review
  17. Article
  18. Article
  19. Is Outpatient Thyroid Surgery for Everyone?Clinical medicine insights. Ear, nose and throat · 2017
    Review
  20. 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 at 1 institution in 1 country.

Sarah C OltmannDepartment of Surgery, Section of Endocrine Surgery, University of Wisconsin, Madison, WI, USA.
Andrew V Brekke
David F Schneider
Sarah C Schaefer
Herbert Chen
Rebecca S Sippel
University of Wisconsin–Madison · US

Funding

Institutional Clinical and Translational Science AwardUL1TR000427 · NCATS · UNIVERSITY OF WISCONSIN-MADISON · PI DREZNER, MARC KENNETH · 2012 to 2016
$32.2M
Institutional Clinical and Translational Science AwardKL2TR000428 · NCATS · UNIVERSITY OF WISCONSIN-MADISON · PI DREZNER, MARC KENNETH · 2012 to 2016
$6.2M
NCATS NIH HHS KL2 TR000428NCATS NIH HHS UL1 TR000427
6 · The paper itself

Abstract

backgroundHypocalcemia occurs after total thyroidectomy (TT) for Graves disease via parathyroid injury and/or from increased bone turnover. Current management is to supplement calcium after surgery. This study evaluates the impact of preoperative calcium supplementation on hypocalcemia after Graves TT.

methodsA prospective study of patients with Graves disease undergoing TT was performed. Patients with Graves disease managed over a 9-month period took 1 g of calcium carbonate (CC) three times a day for 2 weeks before TT. Those managed the previous year without supplementation served as historic controls. Age-, gender-, and thyroid weight-matched, non-Graves TT patients were procedure controls. Patient demographics, postoperative laboratory values, complaints, and medications were reviewed. Parathyroid hormone (PTH)-based postoperative protocols dictated postoperative CC and calcitriol use.

resultsForty-five patients with Graves disease were treated with CC before TT, and 38 patients with Graves disease were not. Forty control subjects without Graves disease were identified. Age, gender, and thyroid weight were comparable. Preoperative calcium and PTH levels were equivalent. PTH values immediately after surgery, at postoperative day 1, and at 2-week follow-up were equivalent. Postoperative use of scheduled CC (p = 0.10) and calcitriol (p = 0.60) was similar. Postoperatively, patients with untreated Graves disease had lower serum calcium levels than pretreated patients with Graves disease or control subjects without Graves disease (8.3 mg/dL vs. 8.6 vs. 8.6, p = 0.05). Complaints of numbness and tingling were more common in nontreated Graves disease (26%) than in pretreated Graves disease (9%) or in control subjects without Graves disease (10%, p < 0.05).

conclusionsCalcium supplementation before TT for Graves disease significantly reduced biochemical and symptomatic postoperative hypocalcemia. Preoperative calcium supplementation is a simple treatment that can reduce symptoms of hypocalcemia after Graves TT.

Indexed as

Dietary SupplementsAdultCalciumFemaleFollow-Up StudiesGraves DiseaseHumansHypocalcemiaMaleMiddle AgedParathyroid HormonePostoperative ComplicationsPostoperative PeriodPrognosisProspective StudiesThyroidectomyCalciumParathyroid Hormone

Identifiers

PMID25212835
PMCPMC4318765
OpenAlexW1991640019

What OpenQuestion holds

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Registered trials

None linked

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.