Sex-Stratified Predictors of Prolonged Operative Time and Hospital Admission in Outpatient Parathyroidectomy

Our retrospective database study investigates sex-stratified predictors of prolonged operative time (POT) and hospital admission following parathyroidectomy for primary hyperparathyroidism (PHPT). The 2016 to 2018 American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) was queried for patients with PHPT undergoing parathyroidectomy. Cases analyzed were all outpatient status, arrived from home, coded as non-emergent, and elective. POT was defined by the 75th percentile. Hospital admission was defined as LOS ≥ 1 day. Univariate and multivariable binary logistic regressions were utilized. Of 7442 cases satisfying inclusion criteria, the majority were female (78.0%) and White (78.5%). Median OT (IQR) for females and males was 77 (58-108) and 81 (61-109) minutes, respectively (P = 0.003). 1965 (33.9%) females and 529 (32.3%) males required hospital admission. Independent predictors of POT included ASA class III/IV (aOR 1.342, 95% CI 1.007-1.788) and obesity (aOR 1.427, 95% CI 1.095-1.860) for males (P < 0.05). Independent predictors of hospital admission included age (aOR 1.008, 95% CI 1.002-1.014), ASA class III/IV (aOR 1.490, 95% CI 1.301-1.706), obesity (aOR 1.309, 95% CI 1.151-1.489), dyspnea (aOR 1.394, 95% CI 1.041-1.865), chronic steroid use (aOR 1.674, 95% CI 1.193-2.351), and COPD (aOR 1.534, 95% CI 1.048-2.245) for females (P < 0.05); and ASA class III/IV (aOR 1.931, 95% CI 1.483-2.516) and bleeding disorder (aOR 2.752, 95% CI 1.443-5.247) for males (P < 0.005). In conclusion, predictors of POT and hospital admission following parathyroidectomy for PHPT differed by patient sex. Identifying patients at risk for POT and hospital admission may optimize healthcare resource utilization. Level of Evidence: IV.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12070-023-04444-3.

Older Patients With Asymptomatic Primary Hyperparathyroidism: Should Criteria for Surgery Be Expanded?

Context

Patients with primary hyperparathyroidism (PHPT) can present with variable signs, symptoms, and end-organ effects. Clinical practice guidelines influence referral for consideration of parathyroidectomy.

Objective

This study compared the demographic, biochemical, and symptom profile and examine indications for surgery in patients older than 50 years who underwent parathyroidectomy to determine how changes to current guidelines may affect recommendations for parathyroidectomy.

Methods

A retrospective review was conducted of patients age 50 years or older who underwent initial parathyroidectomy for sporadic PHPT from 2012 to 2020. Patients were classified by indications for surgery per guideline criteria (classic, asymptomatic, and no criteria met) and age group (AG): 50 to 59 years; 60 to 69 years; 70 years or older. Patients were treated at a high-volume tertiary medical center by endocrine surgeons.

Results

Of 1182 patients, 367 (31%) classic and 660 (56%) asymptomatic patients met the criteria for surgery. The most common indications for surgery were extent of hypercalcemia (51%), osteoporosis (28%), and nephrolithiasis (27%). Of the 155 (13%) patients who did not meet the criteria, neurocognitive symptoms (AG1: 88% vs AG2: 81% vs AG3: 70%; P = .14) and osteopenia (AG1: 53% vs AG2: 68% vs AG3: 68%; P = .43) were frequently observed regardless of patient age. If the age threshold of younger than 50 years was expanded to 60, 65, or 70 years, an additional 61 (5%), 99 (8%), and 124 (10%) patients in the entire cohort would have met the guideline criteria for surgery, respectively.

Conclusion

Expanding current guidelines for PHPT to include a broader age range, osteopenia, and neurocognitive symptoms may allow for earlier surgical referral and evaluation for definitive treatment.

[Outpatient parathyroid gland operations in the German system-Feasible and useful?]

BACKGROUND

In 2019 approximately 7500 procedures were carried out for parathyroid diseases in Germany (Statistisches Bundesamt 2020, https://www.destatis.de/DE/ ). All operations were performed as inpatient procedures. The catalogue of outpatient procedures for 2023 does not include operations on the parathyroid glands.

OBJECTIVE

Which conditions are prerequisites for parathyroid surgery on an outpatient basis?

MATERIAL AND METHODS

Published data on outpatient parathyroid surgery were analyzed with respect to the underlying disease, procedures performed and patient-specific circumstances.

RESULTS

Initial operations for localized sporadic primary hyperparathyroidism (pHPT) seem to be suitable for outpatient surgery, provided that affected patients fulfil the general prerequisites for an outpatient operation. The procedures focused parathyroidectomy and unilateral exploration can be carried out using local or general anesthesia and have a very low risk for postoperative complications. The organization of the day of the operation and the postoperative treatment of the patient should be organized within a detailed standard of procedure. The remuneration for an outpatient parathyroidectomy is not included in the German outpatient surgery catalogue and is therefore currently not adequately financially reimbursed.

CONCLUSION

In selected patients a limited initial intervention for primary hyperparathyroidism can be safely performed on an outpatient basis; however, the present German reimbursement modalities have to be revised so that the cost of these outpatient operations can be adequately covered.

Recovery After Thyroid and Parathyroid Surgery: How Do Our Patients Really Feel?

INTRODUCTION

Counseling on the immediate postoperative experience for outpatient procedures is largely based on anecdotal experience. We devised a short messaging service (SMS) survey using mobile phone text messages to evaluate real-time patient recovery following outpatient thyroid or parathyroid surgery.

MATERIALS AND METHODS

Daily automated SMS surveys were sent the evening of the operation until postoperative day 10. Pain, opioid use, voice quality, and energy levels were assessed. Impaired voice and energy was defined as a score < 2/3 of normal.

RESULTS

One hundred fifty five patients were enrolled with an overall response rate of 81.6%. One hundred thirty three patients had an individual response rate > 50% and were included in the final analysis. Median patient age was 60 y with 102 females (76.7%). Seventy patients (52.6%) underwent parathyroidectomy and 66 (49.6%) thyroidectomy and 10 (7.5%) neck dissection. Forty eight patients (36.1%) did not use any opioids postoperatively. Independent risk factors for higher total pain scores included thyroidectomy and patients with preoperative opioid or tobacco use, while increased opioid use was associated with age < 60 y, body mass index > 30 kg/m², preoperative opioid or tobacco use, and history of anxiety or depression. Patients with loss of intraoperative recurrent laryngeal nerve signaling had a significantly worse overall voice score (54.65 versus 92.67, P < 0.001). Up to 10% of patients were still using opioids and/or reported impaired voice and energy levels beyond 1 wk postoperatively.

CONCLUSIONS

Real-time SMS survey is an effective and potentially valuable way to monitor patient recovery following surgery. A subset of patients reported impaired voice and energy and was still using opioids beyond 1 wk after thyroid and parathyroid surgery and these patients may benefit from closer follow-up and earlier intervention.

Class 3 obesity is not associated with same-day admission in obese patients undergoing parathyroidectomy

IMPORTANCE

Rising rates of obesity and outpatient performance of parathyroidectomies are making it increasingly crucial to investigate the association of obesity with post-operative complications.

OBJECTIVE

To determine whether Class 3 obesity is associated with increased same-day admission compared to lower obesity classes following outpatient parathyroidectomy.

DESIGN

Retrospective cohort study.

SETTING

Outpatient surgery.

PATIENTS

12,973 patients ≥18 years old who underwent outpatient parathyroidectomy between 2014 and 2016, per the American College of Surgeons National Surgical Quality Improvement Program registry.

INTERVENTIONS

Primary exposure variable: body mass index (BMI), with patients assigned to one of six cohorts.

MEASUREMENTS

Primary outcome measure: same-day admission. Secondary outcome measure: 30-day readmission. Logistic regression was used to calculate odds ratios (OR) and 95% confidence intervals (CI).

MAIN RESULTS

There was a final sample size of 12,973 adult patients who underwent parathyroidectomy from 2014 to 2016. The admission rate for BMI ≥30 and < 40 kg/m² (reference cohort) was 42.6%. The admission rates for Class 3 obesity categories were 46.2%, 56.2%, and 52.6% for those in the BMI range of ≥40 kg/m² and < 50 kg/m², ≥50 kg/m² and < 60 kg/m², and ≥ 60 kg/m², respectively. On multivariable logistic regression, there were no difference in the odds of 30-day hospital admission or readmission rate with any of the BMI cohorts when compared to the reference group.

CONCLUSIONS

There is no significant difference in rates of same-day admission or 30-day readmission between any Class 3 (BMI ≥40 kg/m²) obesity cohort and the Class 1 and 2 (BMI ≥30 and < 40 kg/m²) reference cohort following outpatient parathyroidectomy. This corroborates the notion that BMI classes cannot be used in a vacuum to determine eligibility for outpatient parathyroidectomy - a concept that can guide safe and cost-effective institutional practices.

Surgical Management of Primary Hyperparathyroidism-Clinicopathologic Study of 1019 Cases from a Single Institution

BACKGROUND

Primary hyperparathyroidism (pHPT) is an endocrine disorder characterized by hypercalcemia and caused by the presence of disordered parathyroid glands. Parathyroidectomy is the only curative therapy for pHPT, but despite its high cure rate of 95-98%, there are still cases where hypercalcemia persists after this surgical procedure. The aim of this study was to present the results of a surgical treatment of patients due to primary hyperparathyroidism and failures related to the thoracic location of the affected glands.

METHODS

We present a retrospective analysis of 1019 patients who underwent parathyroidectomy in our department in the period 1983-2018.

RESULTS

Among the group of 1019 operated-on patients, treatment failed in 19 cases (1.9%). In 16 (84.2%) of them, the repeated operation was successful. In total, 1016 patients returned to normocalcemia.

CONCLUSIONS

Our results confirm that parathyreoidectomy is the treatment of choice for patients with primary hyperparathyroidism. The ectopic position of the parathyroid gland in the mediastinum is associated with an increased risk of surgical failure. Most parathyroid lesions in the mediastinum can be safely removed from the cervical access.

Routine bilateral neck exploration and four-gland dissection remains unnecessary in modern parathyroid surgery

Objective

Recent advances in preoperative imaging techniques and intraoperative parathyroid hormone (ioPTH) assays have made single-gland, minimally invasive parathyroidectomy (MIP) the preferred treatment option for most patients with primary hyperparathyroidism (pHPT). Despite this evolution, a recommendation for bilateral neck exploration (BNE) with four-gland dissection in all patients has recently been advocated by a parathyroid surgical group. The current study compares the long-term outcomes of MIP with those of conventional BNE with four-gland dissection in patients with pHPT.

Methods

In order to objectively assess a recommendation in the literature that universal BNE with four-gland dissection is advisable, all patients undergoing an initial MIP with ioPTH assessment for pHPT in a tertiary endocrine practice during a 10-year period were reviewed. The cure rates from this procedure were compared with published results of conventional BNE with four-gland dissection.

Results

Of the 561 patients undergoing parathyroidectomy during the study period, 337 had initial surgery for pHPT; 282 of these patients met inclusion criteria and 212 had sufficient follow-up data available. A single adenoma was identified in 87.3% of cases. Preoperative imaging studies were co-localizing in 148 (69.8%), and 127 (85.8%) of these patients with co-localizing imaging required only single-gland surgery. Imaging studies did not co-localize in 49 patients, yet 32 (65.3%) of these patients were still cured with unilateral surgery. The cure rate for patients undergoing MIP was 98.6%, with a long-term recurrence rate of <2%.

Conclusion

When coupled with the ioPTH assay, patients with at least one preoperative localizing study can undergo MIP and anticipate a cure rate of 99%, which is as good as or better than the published rates for conventional BNE with four-gland dissection. With unilateral surgery, the risks of permanent hypoparathyroidism and airway obstruction from bilateral vocal fold paralysis are completely eliminated. Therefore, despite recommendations to the contrary, most patients with pHPT should not have a planned four-gland exploration.

Level of Evidence

III or IV.

Optimizing Outpatient Pain Management After Thyroid and Parathyroid Surgery: A Two-Institution Experience

BACKGROUND

Thyroidectomy and parathyroidectomy are the most commonly performed endocrine operations, and are increasingly being completed on a same-day basis; however, few data exist regarding the outpatient postoperative pain requirement of these patients. We aimed to describe the outpatient narcotic medication needs for patients undergoing thyroid and parathyroid surgery, and to identify predictors of higher requirement.

METHOD

We examined patients undergoing thyroid and parathyroid surgery at two large academic institutions from 1 January-30 May 2014. Prospective data were collected on pain scores and the oral morphine equivalents (OMEQs) taken by these patients by their postoperative visit.

RESULTS

Overall, 313 adult patients underwent thyroidectomy or parathyroidectomy during the study period; 83% of patients took ten or fewer OMEQs, and 93% took 20 or fewer OMEQs. Patients who took more than ten OMEQs were younger (p < 0.001) and reported significantly higher overall mean pain scores at their postoperative visit (p < 0.001) than patients who took fewer than ten OMEQs. A multivariate model was constructed on pre- and intraoperative factors that may predict use of more than ten OMEQs postoperatively. Age <45 years (p = 0.002), previous narcotic use (p = 0.037), and whether parathyroid or thyroid surgery was performed (p = 0.003) independently predicted the use of more than ten OMEQs after surgery. A subgroup analysis was then performed on thyroidectomy-only patients.

CONCLUSION

Overall, 93% of patients undergoing thyroidectomy and parathyroidectomy require 20 or fewer OMEQs by their postoperative visit. We therefore recommend these patients be discharged with 20 OMEQs, both to minimize waste and increase patient safety.

Declining Rates of Inpatient Parathyroidectomy for Primary Hyperparathyroidism in the US

Parathyroidectomy is the only curative therapy for patients with primary hyperparathyroidism. However, the incidence, correlates and consequences of parathyroidectomy for primary hyperparathyroidism across the entire US population are unknown. We evaluated temporal trends in rates of inpatient parathyroidectomy for primary hyperparathyroidism, and associated in-hospital mortality, length of stay, and costs. We used the Healthcare Cost and Utilization Project Nationwide Inpatient Sample (NIS) from 2002–2011. Parathyroidectomies for primary hyperparathyroidism were identified using International Classification of Diseases, Ninth Revision codes. Unadjusted and age- and sex- adjusted rates of inpatient parathyroidectomy for primary hyperparathyroidism were derived from the NIS and the annual US Census. We estimated 109,583 parathyroidectomies for primary hyperparathyroidism between 2002 and 2011. More than half (55.4%) of patients were younger than age 65, and more than three-quarters (76.8%) were female. The overall rate of inpatient parathyroidectomy was 32.3 cases per million person-years. The adjusted rate decreased from 2004 (48.3 cases/million person-years) to 2007 (31.7 cases/million person-years) and was sustained thereafter. Although inpatient parathyroidectomy rates declined over time across all geographic regions, a steeper decline was observed in the South compared to other regions. Overall in-hospital mortality rates were 0.08%: 0.02% in patients younger than 65 years and 0.14% in patients 65 years and older. Inpatient parathyroidectomy rates for primary hyperparathyroidism have declined in recent years.