Phase III, Assessor Blinded, Randomised Controlled Trial of Use of Intraoperative Neuromonitoring (IONM) in Thyroid Cancer Surgery(ACTION)
试验速览
- 阶段
- 不适用
- 入组人数
- 448
- 试验地点
- 2
- 主要终点
- Primary objective assessment (Temporary RLN palsy)- FOL evaluation
研究概览
简要总结
Scientific objectives:
Primary objective:
• To assess if the use of IONM can decrease the rates of temporary RLN palsy after thyroid cancer surgery
Secondary objectives:
- To assess if the use of IONM can decrease permanent RLN palsy rates in patients with thyroid cancers
- To assess voice parameters in patients with RLN palsy
Methodology:
All patients undergoing total thyroidectomy with or without central compartment neck dissection, for thyroid cancers, will be eligible for participation. After confirmation of eligibility and obtaining informed consent, all patients will undergo preoperative screening procedures. Fibreoptic laryngoscopy (FOL) examination will be done to document function of the vocal cords. Preoperative voiceevaluation, GRBAS voice scale assessment and Voice Related Quality of Life (VR-QOL) assessment will be performed for all patients. Patients will then be randomized in a 1:1 ratio to receive IONM or not during surgery. Patients will be stratified as per predefined stratification factors. After surgery, endpoint assessment of vocal cord mobility will be done with a FOL study, by an assessor blinded to the randomization arm. Voice evaluation, GRBAS scale assessment and VR QOL assessment will also be done. An event will be defined as any vocal fold paresis/palsy. Patients without the event will be followed up for 6 months while patients with the event will be followed up for 2 years to assess recovery of vocal cord function and changes in speech parameters. All patients with vocal cord paresis/palsy will be given speech and swallowing rehabilitation
详细描述
Background and rationale of the study:
The incidence of the thyroid carcinoma has dramatically increased in the last few decades.1Total thyroidectomy with or without central compartment dissection is the treatment of choice for thyroid carcinoma. Vocal cord palsy (VCP) due to injury to the recurrent laryngeal nerve (RLN) is one of the most dreaded complications of this surgery. The symptoms associated with this complication include hoarseness of voice, voice fatigue and aspiration. Vocal cord palsy can be either temporary or permanent. The reported incidence of temporary VCP varies from 0-12%.2-4 However, the incidence of permanent VCP has been reported to be much lower varying from 0 to 3.5%.4,5Many patients may not present with symptoms of hoarseness and a post-operative laryngoscopic examination is required in all patients who have undergone surgery for thyroid cancer.6 However, the morbidity associated with VCP significantly affects the quality of life of the patient and at times require intervention to prevent aspiration or to improve voice quality.7 In a recent publication from our institute the invesigator found a temporary VCP rate of 11.8%.8
Intra operative nerve monitoring (IONM) is a technique of monitoring the RLN during surgery, to help identification and safe guarding of the nerve during total thyroidectomy as well as central compartment clearance (CCC). This is a well established technique with many centers in the world routinely using monitoring during surgery. There have been 4 RCTs and 2 meta analysis looking at the role of IONM in decreasing RLN palsy after thyroidectomy. The results from the same have been equivocal with 3 of 4 RCTs showing no added benefit in decreasing RLN palsy rates with the use of IONM.9-12 Of the 2 meta analysis, there was a decrease in RLN palsy rates in one of the meta analysis. 13 however the other Meta analysis by Higgins et al showed no improvement in RLN palsy rates with the use of IONM.14 In the meta analysis by Yang et al, published in 2016, there was a 44% (p=ns) decrease in temporary RLN palsy rates in the thyroid cancer cohort. However, the literature on use of IONM is still equivocal in literature. The other issue with available literature on use of IONM is that, most studies have looked at a heterogenous population of patients being operated for benign and malignant disease. Also most patients in the series evaluated have been patients who have undergone surgery for benign multinodular goiters. The extent of RLN dissection in these patients is limited as compared to patients undergoing surgery for thyroid cancers which involve total thyroidectomy and central compartment dissections. There have been no RCTs looking at the role of IONM in preventing RLN palsy in thyroid cancer surgeries. Also none of the RCTs performed have had a formal sample size calculation and robust analysis.
Section B: Aims and Objectives Aim: To assess the role of IONM in thyroid cancer surgery
Primary objective:
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Total thyroidectomy with or without central compartment dissection
- •Redo total/completion thyroidectomy
排除标准
- •Patients operated for benign diseases
- •Hemithyroidectomy
- •Pre operative cord fixity
- •High risk for intraoperative RLN sacrifice as determined by the treating surgeon
- •Redo patients undergoing unilateral procedures
- •Patients unwilling to participate in the trial
结局指标
主要结局
Primary objective assessment (Temporary RLN palsy)- FOL evaluation
时间窗: upto 21 days after surgery
The vocal cord mobility of each patient will be documented as mobile, fixed or restricted. Restriction of VC movement will be considered as an event for analysis. Other parameters like phonatory gap, arytenoid position, aspiration evaluation will also be done and recorded.
次要结局
- Acoustic analysis(upto 21 days)
- Aerodynamic voice measurement(upto 21 days after surgery)
- Voice quality assessment(upto 21 days after surgery)
研究者
Dr. Gouri Pantvaidya
Professor and Consultant Surgeon Department of Head & Neck Surgery, Tata Memorial Centre Secretary, Data Safety Monitoring Unit
Tata Memorial Hospital