Can Total Thyroidectomy Be Safely Performed by Residents?: A Comparative Retrospective Multicenter Study

Role of Absorbable Polysaccharide Hemostatic Powder in the Prevention of Bleeding and Wound Events after Thyroid Surgery

BACKGROUND

Bleeding is one of the most fearsome and life-threatening complications after thyroid surgery. Several medical devices and haemostatic agents have been proposed to improve haemostasis during total and hemi-thyroidectomy. Resorbable polysaccharide powder (HaemoCer™) is a plant-based polymer that is helpful in terms of the coagulation cascade becoming a gel and forming a barrier to prevent further bleeding, having tested for haemostasis in different districts. The aim of the current study was the evaluation of drain output, the presence of significant postoperative blood loss and complications in patients treated with or without resorbable polysaccharide powder during thyroid surgery.

METHODS

From January to December 2022, postoperative bleeding, drainage output and the postoperative wound events of patients undergoing thyroid surgery, in a tertiary centre, with haemostasis completion with resorbable polysaccharide powder (Group A) or not (Group B), were retrospectively analysed.

RESULTS

Eighty-one patients in Group A received a haemostasis improvement with the use of reabsorbable polysaccharide powder, and 96 patients in Group B received thyroid surgery alone. Patients in Group A presented lower drainage output (0.005), lower incidence of neck haematoma (0.005) and seroma (0.021), confirmed also by multivariate analysis.

CONCLUSIONS

The resorbable polysaccharide powder, in the current series, appeared to be an effective agent in achieving haemostasis in thyroidectomies, reducing the postoperative drainage output, and also neck events such as neck haematoma and seroma, improving the postoperative comfort of the patients. Further larger comparative studies are needed to address this issue.

Risk factors for difficult thyroidectomy and postoperative morbidity do not match: retrospective study from an endocrine surgery academic referral centre

Hyperthyroidism, goiter and thyroiditis have been associated with complex thyroidectomy. Difficult thyroidectomies may implicate longer operating times and higher complication rates, while literature on quantification and prediction of difficulty in thyroidectomy is scant. We aim at assessing the impact of preoperative and intraoperative factors on the technical difficulty of total thyroidectomy (TT) and on the incidence of postoperative complications. We conducted a retrospective study on 197 TT from 343 thyroidectomies performed with intraoperative neuromonitoring between October 2019 and June 2022 (excluding lobectomies, nodal dissection, extra-thyroidal procedures). Operating time (surrogate of TT difficulty), postoperative hypocalcaemia, recurrent laryngeal nerve palsy and postoperative bleeding were assessed in relation to pre- and intraoperative characteristics. Vocal fold palsy(VFP) was defined as recovering < 12 months postoperatively. There were 87 thyroid cancers and 110 multinodular goiters (21 hyperfunctioning, 51 mediastinal). Median operating time was 136 min (range 51-310). Within 17.4 months overall median follow-up we recorded two transient VFPs and 12% symptomatic transient hypocalcaemia. At univariable analysis male sex (p = 0.005), BMI (p < 0.001), thyroiditis (p < 0.05), hypervascular goiter (p = 0.003) and thyroid adhesions to surrounding anatomical structures (p < 0.001) were associated with longer operating time. At multivariable analysis male male sex (p = 0.01), obesity (p = 0.001) and thyroid adhesions (p = 0.008) were factors for prolonged operating time. Above-normal anti-thyroid peroxidase antibodies correlated to transient symptomatic hypocalcemia (p < 0.001). Risk factors for complex TT were identified and did not correlate with morbidity rates. Results from this study may help optimizing operating room schedule and inform case selection criteria for training programs in thyroid surgery. Further research is required to confirm these findings.

Achieving the learning curve in total thyroidectomy: a prospective evaluation on resident's training by CUSUM and KPSS analysis

INTRODUCTION

Total thyroidectomy (TT) is one of the most common procedures among general and endocrine surgeons worldwide. The conventional approach by neck incision is still the most frequently used, despite the growth of mini-invasive approaches. Controversies exist about the optimal learning curve for resident surgeons approaching this procedure. The aim of this study was to compare TT performed by experienced surgeons and residents in two academic hospitals, to define the correct shape of the specific learning curve.

METHODS

Between January 2016 and December 2018 patients undergoing TT in two academic departments were prospectively enrolled. In each department patients were divided into four groups: a reference group (A), consisting of 50 consecutive patients operated on by a senior surgeon, and three other groups (B, C, D) of 50 patients each where thyroidectomy was carried out by three different general surgery residents in their last 3 years of residency, respectively. Data were analysed by CUSUM and KPSS tests in order to compare operative time (OT) and its stabilisation during the learning curve.

RESULTS

Data from CUSUM test reported that residents could perform TT with OT similar to the senior surgeon after approximately 25-30 procedures, while the KPSS test showed that residents became more stable after 30 procedures, with no increase in perioperative complications.

CONCLUSIONS

This prospective study shows how a specific training in thyroid surgery can be reliable thanks to experienced tutors, and confirmed that the effect of dedicated and programmed training may result in positive outcomes for patients requiring thyroidectomy.

Trainee participation does not adversely affect the safety of thyroid surgery: A systematic review and meta-analysis

Surgical traineeship is essential but must be safe for patients. In thyroid surgery, surgeon volume correlates with improved clinical/economic outcomes. However, it is presently unclear how far does trainee participation affect post-thyroidectomy complication rates in real-world and randomized data. We systematically searched four databases for associations of trainee participation with any post-thyroidectomy outcome. We conducted univariate meta-analyses, sensitivity analyses, and assessed publication bias qualitatively and quantitatively. We included 1 randomized and 15 observational studies from 3755 records, comprising 34 774 thyroid surgical patients. Trainee participation was associated with 12 min longer operative time, but not higher complication rates (hypoparathyroidism, recurrent laryngeal nerve palsy, hematoma, blood loss, return to operating room, hospitalization duration, readmission, and mortality). Sensitivity, publication bias, and multivariate analyses did not change our findings. Real-world and limited randomized data suggest that trainee participation in thyroid surgery is safe, given adequate consultant supervision and appropriate case selection.

Can Tonsillectomy Be Safely Performed by Residents? A Comparative Retrospective Study

OBJECTIVE

To assess whether a surgeon's level of training is associated with outcomes in pediatric tonsillectomy.

DESIGN

A retrospective cohort study of the outcomes of pediatric tonsillectomies performed between 2006 and 2016 by senior surgeons versus resident surgeons under the supervision of senior surgeons.

SETTING

An otolaryngology department in a tertiary academic hospital.

PATIENTS

Children younger than 18 years who underwent bilateral tonsillectomy with or without adenoidectomy.

MAIN OUTCOME MEASURES

Intraoperative bleeding, initiation of oral intake, and intraoperative and postoperative complications.

RESULTS

Of 785 children, 397 (50.5%) were operated on by a resident surgeon and 388 (49.5%) by a senior surgeon. Patient demographics and surgical techniques were similar between the groups. The mean surgical time was 33.2 minutes in the residents' group and 27.1 minutes in the seniors' group (P = .032). The groups were similar in intraoperative bleeding, while same-day initiation of oral intake was 71% for children in the residents' group versus 61% in the seniors' group (P = .28). Reports of postoperative bleeding necessitating readmission and revised operations were similar for both groups (3.0% and 0.7%, respectively, in the residents' group; and 2.5% and 1.0%, respectively, in the seniors' group).

CONCLUSION

Children undergoing tonsillectomy showed similar short-term outcomes, whether the operations were performed by a senior surgeon or a resident surgeon supervised by an attending surgeon. This study demonstrates the safety of pediatric tonsillectomy performed by resident surgeons supervised by attending physicians.

Volume, outcomes, and quality standards in thyroid surgery: an evidence-based analysis-European Society of Endocrine Surgeons (ESES) positional statement

INTRODUCTION

Continuous efforts in surgical speciality aim to improve outcome. Therefore, correlation of volume and outcome, developing subspecialization, and identification of reliable parameters to identify and measure quality in surgery gain increasing attention in the surgical community as well as in public health care systems, and by health care providers. The need to investigate these correlations in the area of endocrine surgery was identified by ESES, and thyroid surgery was chosen for this analysis of the prevalent literature with regard to outcome and volume.

MATERIALS AND METHODS

A literature search that is detailed below about correlation between volume and outcome in thyroid surgery was performed and assessed from an evidence-based perspective. Following presentation and live data discussion, a revised final positional statement was presented and consented by the ESES assembly.

RESULTS

There is a lack of prospective randomized controlled studies for all items representing quality parameters of thyroid surgery using uniform definitions. Therefore, evidence levels are low and recommendation grades are based mainly on expert and peer evaluation of the prevalent data.

CONCLUSION

In thyroid surgery a volume and outcome relationship exists with respect to the prevalence of complications. Besides volume, cumulative experience is expected to improve outcomes. In accordance with global data, a case load of < 25 thyroidectomies per surgeon per year appears to identify a low-volume surgeon, while > 50 thyroidectomies per surgeon per year identify a high-volume surgeon. A center with a case load of > 100 thyroidectomies per year is considered high-volume. Thyroid cancer and autoimmune thyroid disease predict an increased risk of surgical morbidity and should be operated by high-volume surgeons. Oncological results of thyroid cancer surgery are significantly better when performed by high-volume surgeons.

Training in endocrine surgery

BACKGROUND/PURPOSE

In Europe, the Division of Endocrine Surgery (DES) determines the number of operations (thyroid, neck dissection, parathyroids, adrenals, neuroendocrine tumors of the gastro-entero-pancreatic tract (GEP-NETs)) to be required for the European Board of Surgery Qualification in (neck) endocrine surgery. However, it is the national surgical boards that determine how surgical training is delivered in their respective countries. There is a lack of knowledge on the current situation concerning the training of surgical residents and fellows with regard to (neck) endocrine surgery in Europe.

METHODS

A survey was sent out to all 28 current national delegates of the DES. One questionnaire was addressing the training of surgical residents while the other was addressing the training of fellows in endocrine surgery. Particular focus was put on the numbers of operations considered appropriate.

RESULTS

For most of the operations, the overall number as defined by national surgical boards matched quite well the views of the national delegates even though differences exist between countries. In addition, the current numbers required for the EBSQ exam are well within this range for thyroid and parathyroid procedures but below for neck dissections as well as operations on the adrenals and GEP-NETs.

CONCLUSIONS

Training in endocrine surgery should be performed in units that perform a minimum of 100 thyroid, 50 parathyroid, 15 adrenal, and/or 10 GEP-NET operations yearly. Fellows should be expected to have been the performing surgeon of a minimum of 50 thyroid operations, 10 (central or lateral) lymph node dissections, 15 parathyroid, 5 adrenal, and 5 GEP-NET operations.

Surgical Complications After Thyroid Surgery: A 10-Year Experience at Jeddah, Saudi Arabia

To evaluate the incidence and predictive risk factors of complications in patients who underwent thyroid surgery at our hospital with a residency training program. This retrospective cohort study analyzed the complications in all patients who underwent thyroid surgery between January 2008 and December 2017. Demographic data, preoperative diagnosis based on fine needle aspiration cytology, surgical approach, permanent pathology, postoperative complications, and factors associated with complications were recorded. At our hospital, 456 patients underwent thyroidectomy. The most common surgical complications were asymptomatic biochemical hypocalcemia and symptomatic hypocalcemia in 109 (23.9%) and 50 (11%) patients, respectively. Other surgical complications included permanent hypocalcemia, transient vocal cord palsy, permanent vocal cord palsy, hematoma, seroma, chyle fistula, and Horner's syndrome. Mean age > 45 years and more extensive surgery were significantly associated with overall complications (P = 0.003; < 0.001). Mean age > 50 years and vitamin D level < 25 nmol/L (< 10 ng/mL) were significantly associated with hypocalcemia (P = 0.008; < 0.001). Moreover, the extent of surgery and advanced thyroid carcinoma were significantly associated with vocal cord palsy (P < 0.001; 0.05). Hypocalcemia and vocal cord palsy are the most significant complications. Thyroid surgery can be performed safely by senior residents in the residency training program under the direct supervision of an experienced surgeon.

Reduction in postoperative hypoparathyroidism following carbon nanoparticle suspension injection combined with parathyroid gland vasculature preservation

Objective

We evaluated the effectiveness of carbon nanoparticle suspension injection combined with parathyroid gland vasculature preservation to identify and preserve the parathyroid gland to reduce postoperative hypoparathyroidism following thyroidectomy.

Material and Methods

Fifty patients with thyroid tumors received carbon nanoparticle suspension injection combined with parathyroid gland vasculature preservation (group A). Serum calcium and PTH levels were recorded and compared with those of 50 control patients who underwent a standard thyroidectomy procedure (group B).

Results

The serum calcium level in group A was significantly higher than that in group B at day 1 (2.20 ± 0.02 vs 2.11 ± 0.03 mmol/L) and day 30 (2.27 ± 0.01 vs 2.21 ± 0.02 mmol/L) after surgery. The PTH level in group A was also significantly higher than that in group B at day 1 (33.5 ± 2.36 vs. 25.31 ± 2.98 pg/mL) after surgery. The incidence of hypoparathyroidism was significantly higher in group B than in group A at day 1 after surgery (19 vs. 7 patients).

Conclusion

When combined with parathyroid gland vasculature preservation, carbon nanoparticle suspension injection can effectively reduce the incidence of temporary parathyroidism following thyroid surgery.

A High-Definition Video Teaching Module for Thyroidectomy Surgery

OBJECTIVE

With the changing landscape of postgraduate surgical education to competency-based curricula, there emerges a need for alternative forms of training. Video teaching modules have been shown to be effective tools in surgical education, complementing traditional postgraduate curricula. There is a lack of validated modules described in the literature, specifically for teaching thyroidectomy. The primary objective of this study was to develop and validate a high definition video-based teaching module instructing thyroidectomy surgery to Otolaryngology-Head and Neck Surgery trainees.

DESIGN

This prospective study included intermediate to senior Otolaryngology-Head and Neck Surgery residents. Each participant first performed a thyroid lobectomy, serving as the initial assessment. After a washout period of at least 3 weeks, each participant was given the teaching module. The 15-minute module was developed using a 3-camera system and detailed a step-by-step approach to the surgery. After exposure to the module, each trainee performed the same procedure. Recordings of both procedures were deidentified and reviewed by a blinded, independent evaluator. Scoring was done using the Observational Clinical Human Reliability Assessment (OCHRA) system.

SETTING

University of Alberta Hospital and Royal Alexandra Hospital, Edmonton, Alberta, Canada.

PARTICIPANTS

A total of 6 intermediate to senior Otolaryngology-Head and Neck Surgery residents entered and completed the study.

RESULTS

The mean error rate was 8.8 errors per procedure before module exposure and 4.5 errors per procedure after exposure, representing a 49% decrease in error occurrence (p < 0.05). The mean staff takeover event rate was 10.5 takeovers per procedure prior to module exposure and 5.0 takeovers per procedure after exposure, representing a 52% decrease in error occurrence (p < 0.05).

CONCLUSION

High-definition video teaching modules are a useful complement to traditional surgical training. In a climate where new innovations for teaching thyroid surgery are needed, properly constructed and validated video teaching modules can serve as important tools in supplementing traditional surgical training.

Risk factors for postoperative hypocalcemia

Hypocalcaemia is one of the most common complications after thyroidectomy; however, it is still unclear what preoperative factors could predict this event. The aim of this study was to evaluate the role of risk factors for hypocalcaemia after total thyroidectomy (TT). Consecutive patients who underwent total thyroidectomyat our institution between January 2014 and January 2016 were enrolled. The clinical and pathologic characteristics and surgical details of normocalcemic and hypocalcemic patients were compared. Univariate and multivariate analyses to estimate risk ratio were assessed. A total of 328 patients underwent TT; histology revealed benign and malignant disease in 83 and 17% of cases, respectively. Central-compartment neck dissection (CCND) was performed in 36 subjects (10.9%). Parathyroid glands were observed in 23% (76) of specimens. Laboratory asymptomatic hypocalcaemia was observed in 92 (28%) patients; symptomatic hypocalcaemia occurred in 26 (7.9%). Transient hypocalcaemia has been observed in 48 (14.6%) patients; permanent hypocalcaemia occurred in two subjects (0.6%). On univariate analysis, malignant pathology (p < 0.001), CCND (p < 0.05), female gender (p < 0.001), presence of at least two parathyroid glands in specimens (p < 0.002), and operative time longer than 120 min (p < 0.05) were factors that significantly increased the risk of developing asymptomatic and transient hypocalcaemia. After logistic regression analysis, malignant pathology (p < 0.000; p < 0.001) and CCND (p < 0.005; p = 0.013) were the significant factors that affected the development of symptomatic and transient hypocalcaemia. The presence of malignant pathology and CCND was found to be significant risks factors for postoperative hypocalcaemia. In patients in whom this pathological features are present, attention should be paid to rapidly start an adequate therapy.

Parathyroid reimplantation with PR-FaST technique in unselected patients during thyroidectomy. A case series with long term follow up confirming graft vitality and parathormone production

INTRODUCTION

Parathyroid damage or unintentional excision still affect thyroid surgery and may cause permanent hypoparathyroidism. The only way to recover the excised or ischemic gland functionality is still reimplantation. Many sites of reimplantation have been described, each of one showing both advantages and drawbacks. The aim of this study is to verify results of a new procedure called PR-FaST: Parathyroid Reimplantation in Forearm Subcutaneous Tissue, in a series of unselected patients after long-term follow-up.

MATERIALS AND METHODS

From January 2013 to October 2015, 296 consecutive total thyroidectomies have been performed) to treat both benign and malignant thyroid diseases. in 42 cases (14.1%), due to an insufficient blood supply or accidental removal, one parathyroid gland was reimplanted with the PR-FaST technique. Post-operative evaluation was carried out by: total serum calcium (Ca), magnesium (Mg) and phosphorus (P) analysis in the 1st and 2nd postoperative days; Ca, Mg, P and serum iPTH from both arms analysis one week after surgery; Ca and iPTH measurement from both arms 1 months, 3, 6 and 12 months after surgery.

RESULTS

We observed transient hypocalcemia requiring calcium replacement therapy in 5 on 42 (11.9%) patients submitted to PR-FaST. No case of permanent hypoparathyroidism was reported. At 1 week after surgery, only 20 patients (47.6%) showed graft vitality, while the number of patients showing graft vitality arised to 33 (79%) after 1 month and to 39 (92.8%) after three and six months. At 1 year 38 (90.5%) patients showed good graft functionality. Considering levels of serum iPTH from both arms, we observed that in case of graft functionality, samples from reimplanted arm revealed in almost all cases values at least 2-3 folds higher than in non reimplanted arm.

CONCLUSIONS

Results from this prospective evaluation suggest that PR-FaST is a safe and effective procedure, with potential advantages when compared to other techniques of parathyroid reimplantation, that are mainly the possibility to evaluate graft functionality in the follow-up and the easy and well reproducible technique. Furthermore, it can be applied, when needed, to potentially all patients undergoing thyroidectomy.

Influence of change in surgical practice for benign thyroid disease on postsurgical outcome-Single-center experience in 1400 patients

PURPOSE

To evaluate the rate of surgical complications during the change from subtotal resection to hemithyroidectomy or thyroidectomy over a period of 17 years.

METHODS

All operations for benign goiter at our hospital were analyzed for the periods 1996-2002 (Group 1) and 2003-2012 (Group 2). The groups were compared for recurrent laryngeal nerve damage, hypocalcemia, and other surgical complications directly postoperatively.

RESULTS

In total, 1462 patients were operated on for goiter between 1996 and 2012. There were 1219 patients who underwent a primary thyroid operation, whereas 50 patients had surgery for recurrence. Postoperative histology revealed thyroid cancer in 193 patients (13.2%). In Group 1, 42.7% of all operated lobes were performed as lobectomies and 57.3% as subtotal resections; in Group 2, 74.4% were performed as lobectomies and 25.6% as subtotal resections. No differences were found for reduced vocal cord function (2.4% vs. 1.9%, p = 0.746) and recurrent laryngeal nerve paralysis in the postoperative laryngoscopy (2.9% vs. 1.8%, p = 0.675). Postoperative hypoparathyroidism was detected in 13.66% in Group 1 and in 19.80% in Group 2 after bilateral resections (p = 0.037). There was no difference in the rate of reoperations for cancer between both groups (43.4% vs. 52.1%, p = 0.182).

CONCLUSION

Surgical practice changed from subtotal to lobectomies for benign goiter over a period of 17 years without change in laryngeal nerve damage but with increasing rates of postoperative hypocalcemia.