Evidence map›Paper›PMID 35904639›Full record

Trial reportLangenbeck's archives of surgery2022

Near-infrared autofluorescence of the parathyroid glands during thyroidectomy for the prevention of hypoparathyroidism: a prospective randomized clinical trial.

Henning Wendelin Wolf, Norbert Runkel, Kathrin Limberger, Christian Andreas Nebiker

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Langenbeck's archives of surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 4 pooled it
5.7field-weighted citation impact, top 3% 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

16 citing papers in PubMed, 4 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Fluorescent Imaging in Thyroid Surgery to Preserve Parathyroid Function: A Systematic Review and Meta-Analysis.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2026
    Pooled it
  2. Efficacy and role of indocyanine green angiography in thyroidectomy: a systematic review and meta-analysis.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
    Pooled it
  3. Pooled it
  4. Impact of Intraoperative Interventions on Hypocalcemia Post-Total Thyroidectomy: A Meta-Analysis.Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale
    Pooled it
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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

4 authors at 3 institutions in 2 countries.

Henning Wendelin WolfSchwarzwald-Baar Klinikum Villingen-Schwenningen, Klinikstrasse 11, 78052, Villingen-Schwenningen, Germany. henning.wolf@ksa.ch.ORCID http://orcid.org/0000-0001-5536-7211
Norbert RunkelSchwarzwald-Baar Klinikum Villingen-Schwenningen, Klinikstrasse 11, 78052, Villingen-Schwenningen, Germany.
Kathrin LimbergerSchwarzwald-Baar Klinikum Villingen-Schwenningen, Klinikstrasse 11, 78052, Villingen-Schwenningen, Germany.
Christian Andreas NebikerKantonsspital Aarau AG, Tellstrasse 25, 5001, Aarau, Switzerland.
Schwarzwald-Baar Klinikum · DEKantonsspital Aarau · CHSpital Linth · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePostoperative hypoparathyroidism remains the most often complication in thyroid surgery. Near-infrared autofluorescence (NIR-AF) is a modality to identify parathyroid glands (PG) in vivo with high accuracy, but its use in daily routine surgery is unclear so far. In this randomized controlled trial, we evaluate the ability of NIR-AF to prevent postoperative hypoparathyroidism following total thyroidectomy.

methodsPatients undergoing total thyroidectomy were allocated in two groups with the use of NIR-AF in the intervention group or according to standard practice in the control group. The aim was to identify the PGs in an early most stage of the operation to prevent their devascularization or removal. Parathyroid hormone was measured pre- and postoperatively and on postoperative day (POD) 1. Serum calcium was measured on POD 1 and 2. Possible symptoms and calcium/calcitriol supplement were recorded.

resultsA total of 60 patients were randomized, of whom 30 underwent NIR-AF-based PG identification. Hypoparathyroidism at skin closure occurred in 7 out of 30 patients using NIR-AF, respectively, in 14 out of 30 patients in the control group (p=0.058). There was no significant difference in serum calcium and parathyroid hormone levels between both groups. Likewise, NIR-AF could not detect PGs at a higher rate.

conclusionThe use of NIR-AF may help surgeons identify and preserve PGs but did not significantly reduce the incidence of postoperative hypoparathyroidism in this trial. Larger case series have to clarify whether there is a benefit in routine thyroidectomy. TRIAL REGISTRATION NUMBER: DRKS00009242 (German Clinical Trial Register). Registration date: 03.09.2015.

Indexed as

HypocalcemiaHypoparathyroidismCalciumHumansParathyroid GlandsParathyroid HormonePostoperative ComplicationsProspective StudiesThyroidectomyCalciumParathyroid HormoneEndocrine surgeryHypocalcemiaHypoparathyroidismNear-infrared autofluorescenceThyroid surgery

Identifiers

PMID35904639
PMCPMC9640439
OpenAlexW4288535521

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.