Renovated Prediction Model for Difficult Transoral and Submental Endoscopic Thyroidectomy

Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
AgeNot listed
SponsorShanghai 6th People's Hospital

About this trial

The investigators have previously proposed a prediction model for difficult transoral and submental thyroidectomy through a retrospective study. In order to better promote transoral and submental endoscopic approach for thyroid surgery and to set up an appropriate training course, the investigators aim to refine the procedure through a prospective study. As a procedure refinement, a modified strap-muscle dissection technique will be introduced during transoral and submental endoscopic thyroidectomy.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Clinical diagnosis of differentiated thyroid cancer with a maximum diameter not exceeding 4 cm

Clinical diagnosis of benign thyroid nodule with a maximum diameter not exceeding 6 cm

Absence of suspicious lateral lymph nodes or distant metastases

Disqualifiers

Participants with fusion or fixation of lymph nodes in the neck

Participants with history of neck surgery or radiation

Participants with vocal fold fixation by preoperative fibrolaryngoscope

Participants with preoperative examination suggestive of extrathyroidal invasion

Trial population

Patients with FNA proven differentiated thyroid cancer, were willing to undergo thyroidectomy and central lymph node dissection via transoral and submental approach. Patients were well informed about the transoral and submental approach and were aware of the potential benefits and risks. Patient consented for us to use perioperative data.

Trial design

Design model

Cohort

Time perspective

Prospective

Treatments tested in this trial

  • Modified Strap-Muscle Dissection Technique

    Procedure/Surgery

    A refined endoscopic thyroidectomy technique characterized by limited midline separation of the superficial sternohyoid muscle layer, with preservation of adequate deep-layer sternothyroid dissection and lateral strap-muscle retraction to maintain surgical exposure.

Treatment groups

300 Participants
are divided into 2 treatment groups
Group A: Conventional TOaST0 interventions
Group B: Modified Strap-Muscle Dissection TOaST1 intervention

Trial outcomes

Primary outcomes

1

Postoperative neck functional recovery at 1 month

Postoperative neck functional recovery will be assessed 1 month after surgery using a standardized neck function assessment, including neck discomfort, anterior neck tightness, swallowing-related traction discomfort, and neck range of motion. Higher impairment scores indicate worse neck functional recovery.

Time frame
1 month after surgery
2

Anterior neck tightness score

Anterior neck tightness will be assessed using a patient-reported visual analog scale or numerical rating scale. Higher scores indicate more severe tightness.

Time frame
Postoperative 1 week, 1 month, and 3 months
3

Swallowing-related traction discomfort

Swallowing-related traction discomfort will be assessed using a patient-reported visual analog scale or numerical rating scale. Higher scores indicate more severe discomfort.

Time frame
Postoperative 1 week, 1 month, and 3 months

Secondary outcomes

1

hospitalization

days of hospitalization

Time frame
Length of stay from hospitalisation to discharge
2

degree of pain

pain intensity was assessed using a standard visual analogue score, with a score of 0 to 10 corresponding to no pain to the most severe pain

Time frame
approximately 4 hours after surgery and on postoperative day 1
3

Number of participants with recurrent laryngeal nerve injury

Impaired vocal cord mobility confirmed by postoperative laryngoscopy

Time frame
Through study completion, an average of 1 year
4

Number of participants with hypoparathyroidism

A postoperative parathyroid hormone level of less than 10 pg/ml

Time frame
Through study completion, an average of 1 year

Other outcomes

Sponsors and contacts

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