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Alomari A, Abu Shanab R, Bajunaid R, Alomari L, Almehmadi N, Alzahrani R, Althubaiti A, Radi S. Iatrogenic Hypoparathyroidism Development After Thyroidectomy: A Retrospective Cohort Study. Endocrinol Diabetes Metab 2024; 7:e506. [PMID: 38932435 PMCID: PMC11208280 DOI: 10.1002/edm2.506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Iatrogenic hypoparathyroidism is a common cause of postthyroidectomy hypocalcaemia. It has varying incidence rates after neck surgery in Saudi Arabia, ranging from 0.07% to 65.30%. Hypoparathyroidism can manifest with a spectrum of symptoms, ranging from mild to severe and life-threatening. This study aimed to assess the rate and predictors of iatrogenic hypoparathyroidism after thyroid surgery and its natural course. METHODS This retrospective cohort study used a data collection form to extract patient information from the electronic healthcare system (Best-Care) for patients treated from 2017 to 2022. Patients' demographics, surgical specifics and biochemical profiles were recorded for subsequent analysis. RESULTS Among the 343 patients who underwent thyroidectomy, 130 (37.9%) developed hypoparathyroidism, primarily within the first day after surgery. Calcium or vitamin D supplementation before surgery did not significantly influence hypoparathyroidism development. Notably, extensive combined lymph node dissection was significantly associated with postoperative hypoparathyroidism development (p = 0.0004). More patients who underwent central and lateral lymph node dissection (n = 19, 79.17%) developed hypoparathyroidism than patients who underwent central (n = 18, 40.91%) or lateral (n = 8, 38.10%) dissection alone. Permanent hypoparathyroidism was observed in 40 patients (11.66%). CONCLUSION This study revealed a high incidence of iatrogenic hypoparathyroidism and high rates of permanent hypoparathyroidism. Further research is warranted to better comprehend the risk factors and optimise management strategies for iatrogenic hypoparathyroidism. Overall, our findings emphasise the need for vigilant monitoring and effective management of patients undergoing thyroidectomy and the significance of postoperative replacement therapies.
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Affiliation(s)
- Amal A. Alomari
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
| | - Raneen N. Abu Shanab
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
| | - Randa A. Bajunaid
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
| | - Lugean K. Alomari
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
| | - Nidaa M. Almehmadi
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
| | - Raghad S. Alzahrani
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
| | - Alaa Althubaiti
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
| | - Suhaib Radi
- College of MedicineKing Saud Bin Abdulaziz University for Health SciencesJeddahSaudi Arabia
- King Abdullah International Medical Research CenterJeddahSaudi Arabia
- Department of EndocrinologyMinistry of National Guard Health – AffairsJeddahSaudi Arabia
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Li Y, Johnson JP, Yang Y, Yu D, Kubo H, Berretta RM, Wang T, Zhang X, Foster M, Yu J, Tilley DG, Houser SR, Chen X. Effects of maternal hypothyroidism on postnatal cardiomyocyte proliferation and cardiac disease responses of the progeny. Am J Physiol Heart Circ Physiol 2023; 325:H702-H719. [PMID: 37539452 PMCID: PMC10659327 DOI: 10.1152/ajpheart.00320.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/05/2023]
Abstract
Maternal hypothyroidism (MH) could adversely affect the cardiac disease responses of the progeny. This study tested the hypothesis that MH reduces early postnatal cardiomyocyte (CM) proliferation so that the adult heart of MH progeny has a smaller number of larger cardiac myocytes, which imparts adverse cardiac disease responses following injury. Thyroidectomy (TX) was used to establish MH. The progeny from mice that underwent sham or TX surgery were termed Ctrl (control) or MH (maternal hypothyroidism) progeny, respectively. MH progeny had similar heart weight (HW) to body weight (BW) ratios and larger CM size consistent with fewer CMs at postnatal day 60 (P60) compared with Ctrl (control) progeny. MH progeny had lower numbers of EdU+, Ki67+, and phosphorylated histone H3 (PH3)+ CMs, which suggests they had a decreased CM proliferation in the postnatal timeframe. RNA-seq data showed that genes related to DNA replication were downregulated in P5 MH hearts, including bone morphogenetic protein 10 (Bmp10). Both in vivo and in vitro studies showed Bmp10 treatment increased CM proliferation. After transverse aortic constriction (TAC), the MH progeny had more severe cardiac pathological remodeling compared with the Ctrl progeny. Thyroid hormone (T4) treatment for MH mothers preserved their progeny's postnatal CM proliferation capacity and prevented excessive pathological remodeling after TAC. Our results suggest that CM proliferation during early postnatal development was significantly reduced in MH progeny, resulting in fewer CMs with hypertrophy in adulthood. These changes were associated with more severe cardiac disease responses after pressure overload.NEW & NOTEWORTHY Our study shows that compared with Ctrl (control) progeny, the adult progeny of mothers who have MH (MH progeny) had fewer CMs. This reduction of CM numbers was associated with decreased postnatal CM proliferation. Gene expression studies showed a reduced expression of Bmp10 in MH progeny. Bmp10 has been linked to myocyte proliferation. In vivo and in vitro studies showed that Bmp10 treatment of MH progeny and their myocytes could increase CM proliferation. Differences in CM number and size in adult hearts of MH progeny were linked to more severe cardiac structural and functional remodeling after pressure overload. T4 (synthetic thyroxine) treatment of MH mothers during their pregnancy, prevented the reduction in CM number in their progeny and the adverse response to disease stress.
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Affiliation(s)
- Yijia Li
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Jaslyn P Johnson
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Yijun Yang
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Daohai Yu
- Department of Biomedical Education and Data Science, Center for Biostatistics and Epidemiology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Hajime Kubo
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Remus M Berretta
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Tao Wang
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Xiaoying Zhang
- Department of Cardiovascular Sciences, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Cardiovascular Research Center, Philadelphia, Pennsylvania, United States
| | - Michael Foster
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Jun Yu
- Department of Cardiovascular Sciences, Center for Metabolic Disease Research, Lewis Katz School of Medicine, Temple University, Cardiovascular Research Center, Philadelphia, Pennsylvania, United States
| | - Douglas G Tilley
- Department of Cardiovascular Sciences, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Cardiovascular Research Center, Philadelphia, Pennsylvania, United States
| | - Steven R Houser
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
| | - Xiongwen Chen
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, People's Republic of China
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Ray S, Kamath VV, Jadhav SR, Rajesh KN. Hypomagnesemia: A Rare Cause of Movement Disorders, Myopathy and Vertical Nystagmus. Mov Disord Clin Pract 2023; 10:1001-1003. [PMID: 37332632 PMCID: PMC10272912 DOI: 10.1002/mdc3.13735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/14/2023] [Accepted: 03/18/2023] [Indexed: 04/03/2023] Open
Affiliation(s)
- Somdattaa Ray
- Department of NeurologyTrustwell HospitalsBangaloreIndia
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Spinelli C, Ghionzoli M, Bertocchini A, Sanna B, Plessi C, Strambi S, De Napoli L, Frustaci G, Materazzi G, Antonelli A, Morganti R, Gennari F, Inserra A, Bisogno G, Gamba P, Ferrari A, Massimino M. Factors associated with postoperative hypocalcemia following thyroidectomy in childhood. Pediatr Blood Cancer 2022; 69:e29576. [PMID: 35129296 DOI: 10.1002/pbc.29576] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 12/19/2021] [Accepted: 12/27/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Postoperative hypocalcemia is a frequent complication after thyroidectomy. Hypoparathyroidism may develop as transient (TtHP), with normalization within six months from surgery, or permanent (PtHP) if the patient requires replacement therapy. We analyzed factors associated with the development of postoperative hypoparathyroidism and in detail PtHP following thyroid surgery in a pediatric population. PROCEDURE A retrospective multicenter study analyzing 326 patients was carried out. We recorded gender, age, tumor size, thyroiditis, extrathyroidal extension, lymph node dissection (central/lateral compartment, unilateral/bilateral), parathyroid autotransplantation, and histology. Additionally, calcium levels were acquired postoperatively. RESULTS We analyzed pediatric patients ≤18 years who underwent thyroidectomy clustered into age groups (≤15 or > 15). Patients' mean follow-up was 5.8 years (1-11 years). Postoperative hypoparathyroidism occurred in 36 (11.0%): 20 cases (6.13%) developed PtHP. Postoperative hypoparathyroidism was more frequent in younger patients (P = 0.014), in larger tumors (P < 0.001), in case of extrathyroidal extension (P = 0.037), and in central compartment (P = 0.020) and bilateral lymph node dissection (P = 0.030). PtHP was more frequent in older patients (P = 0.014), in case of thyroiditis (P < 0.001), and extrathyroidal extension (P < 0.001). Concerning the first postoperative calcium level measurement, in the postoperative hypoparathyroidism group, we registered a 8.17 mg/dL value with 14% pre/postoperative decrease (ΔCa ), whereas in PtHP patient group calcium level was 7.91 mg/dL with 16.7% ΔCa . CONCLUSIONS The risk of postoperative hypoparathyroidism is related to younger age, tumor size, central compartment and bilateral lymph node dissection, extrathyroidal extension, and decrease in postoperative calcium levels. The risk of PtHP is related to older age, thyroiditis, extrathyroidal extension, and decrease in postoperative calcium levels.
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Affiliation(s)
- Claudio Spinelli
- Division of Pediatric Surgery, Department of Surgical Pathology, University of Pisa, Pisa, Italy
| | - Marco Ghionzoli
- Division of Pediatric Surgery, Department of Surgical Pathology, University of Pisa, Pisa, Italy
| | - Alessia Bertocchini
- Division of Pediatric Surgery, Department of Surgical Pathology, University of Pisa, Pisa, Italy
| | - Beatrice Sanna
- Division of Pediatric Surgery, Department of Surgical Pathology, University of Pisa, Pisa, Italy
| | - Carlotta Plessi
- Division of Pediatric Surgery, Department of Surgical Pathology, University of Pisa, Pisa, Italy
| | - Silvia Strambi
- Division of Pediatric Surgery, Department of Surgical Pathology, University of Pisa, Pisa, Italy
| | - Luigi De Napoli
- Department of Surgical Pathology, Endocrine Surgery Division, University of Pisa, Pisa, Italy
| | - Gianluca Frustaci
- Department of Surgical Pathology, Endocrine Surgery Division, University of Pisa, Pisa, Italy
| | - Gabriele Materazzi
- Department of Surgical Pathology, Endocrine Surgery Division, University of Pisa, Pisa, Italy
| | - Alessandro Antonelli
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Riccardo Morganti
- Division of statistical support to clinical studies, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Fabrizio Gennari
- Division of Pediatric Surgery, "Regina Margherita Hospital,", Turin, Italy
| | - Alessandro Inserra
- General Pediatric and Thoracic Surgery, Bambino Gesù Children's Hospital-Research Institute, Rome, Italy
| | - Gianni Bisogno
- Hematology Oncology Division, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Piergiorgio Gamba
- Pediatric Surgery, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Andrea Ferrari
- Department of Pediatrics, National Cancer Institute, Milan, Italy
| | - Maura Massimino
- Department of Pediatrics, National Cancer Institute, Milan, Italy
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Key Words
- Absorption
- Amphotericin B
- Antibiotics, Chemotherapeutic agents, ATP
- Calcium
- Central Nervous System, CNS
- Distribution
- Excretion
- Hypokalemia, digoxin, hypertension, insulin, intestine
- Hypomagnesemia
- Magnesium
- Metabolism
- Na+ K+/ATP-ase, enolase, pyruvate kinase
- Neuromuscular
- Potassium
- Proton pump inhibitors, Diuretics
- TRPM6 and TRPM7 channels, kidney, nephron, parathyroid hormone (PTH), antidiuretic hormone (ADH)
- TRPM6, atherosclerosis, coronary artery disease, congestive heart failure
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Al Alawi AM, Al Badi A, Al Huraizi A, Falhammar H. Magnesium: The recent research and developments. ADVANCES IN FOOD AND NUTRITION RESEARCH 2021; 96:193-218. [PMID: 34112353 DOI: 10.1016/bs.afnr.2021.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Magnesium is the fourth most abundant mineral in the human body, which facilitates more than 300 enzymatic reactions. Magnesium is essential for nucleic material and protein synthesis, neuromuscular conduction, cardiac contractility, energy metabolism, and immune system function. Gastrointestinal system and kidneys closely regulate magnesium absorption and elimination to maintain adequate storage of magnesium. Magnesium deficiency has been linked to many diseases and poor health outcomes. Magnesium has also been proven to be an effective therapeutic agent in many diseases, such as bronchial asthma, cardiac arrhythmia, and pre-eclampsia.
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Affiliation(s)
- Abdullah M Al Alawi
- Department of Medicine, Sultan Qaboos University Hospital, Muscat, Oman; Oman Medical Specialty Board, Muscat, Oman.
| | | | - Aisha Al Huraizi
- Department of Medicine, Sultan Qaboos University Hospital, Muscat, Oman
| | - Henrik Falhammar
- Department of Endocrinology, Metabolism, and Diabetes, Karolinska University Hospital, Stockholm, Sweden; Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden; Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
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Karunakaran P, Abraham DT, Devadas G, Hussain Z, Kanakasabapathi R. The Effect of Hypomagnesemia on Refractory Hypocalcemia after Total Thyroidectomy: A Single-Center Prospective Cohort Study. Indian J Endocrinol Metab 2020; 24:518-524. [PMID: 33643868 PMCID: PMC7906105 DOI: 10.4103/ijem.ijem_681_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 10/30/2020] [Accepted: 12/05/2020] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Hypomagnesemia is known to impede hypocalcemia correction. This prospective observational study aimed to evaluate the impact of serum magnesium levels on the development of refractory hypocalcemia, which remains a concerning problem after total thyroidectomy (TT). SUBJECTS AND METHODS Consecutive subjects (n = 312; mean age = 38.4 [range: 13-83] years; M:F = 62:250) undergoing TT for benign or malignant thyroid diseases were evaluated for serum corrected-calcium (8.4-10.4 mg/dL), magnesium (1.7-2.4 mg/dL), intact parathormone (iPTH), and 25-hydroxycholecalciferol (25OHD) levels preoperatively, at 48-h and 6-month post-TT. RESULTS Postoperatively, 98 subjects (31.4%) exhibited transient hypocalcemia, 96 (30.8%) had hypomagnesemia, and 52 (16.7%) had refractory hypocalcemia. Preoperatively, 38 subjects (12.2%) had asymptomatic hypocalcemia and 77 (24.7%) had hypomagnesemia. In multivariate logistic regression analysis, independent risk factors of transient hypocalcemia were hyperthyroidism (odd's ratio [OR]: 5.6), 48-h iPTH (OR: 3.2), 48-h magnesium (OR: 2.7), preoperative 25OHD (OR: 0.96), and preoperative calcium (OR: 0.5; each P < 0.01). In receiver-operating characteristic analysis, percent calcium decline and 48-h magnesium reliably predicted transient hypocalcemia with a threshold of 10.5% and 1.9 mg/dL, respectively. Area under curve, sensitivity, and specificity were 0.822, 82.7%, and 72.9%; and 0.649 (each P < 0.001), 68.4%, and 63.1%, respectively. CONCLUSION Serum magnesium below 1.9 mg/dL had 2.7 times higher odds of developing transient hypocalcemia post-TT. Hypomagnesemia and percent calcium decline >10.5% within 48-h post-TT are associated with refractory hypocalcemia, which necessitates correction of both the deficiencies for prompt resolution of symptoms.
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Affiliation(s)
- Poongkodi Karunakaran
- Department of Endocrine Surgery, Madras Medical College, The Tamilnadu Dr MGR Medical University, Chennai, India
- Government Mohan Kumaramangalam Medical College, Salem, India
| | | | - Geetha Devadas
- Institute of Pathology, Madras Medical College, Chennai, India
| | - Zahir Hussain
- Department of Endocrine Surgery, Madras Medical College, Chennai, India
| | - Ramadevi Kanakasabapathi
- Institute of Biochemistry, Madras Medical College and Rajiv Gandhi Government General Hospital, Chennai, India
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Novodvorsky P, Lowry AF, Lim CBB, Balasubramanian SP. Serum Magnesium Measurements After Parathyroidectomy for Primary Hyperparathyroidism: Should It be Routine? World J Surg 2020; 44:1898-1904. [PMID: 32055969 DOI: 10.1007/s00268-020-05425-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Parathyroidectomy is the treatment of choice in primary hyperparathyroidism (PHPT). Following surgery, significant changes in bone and mineral metabolism may follow, but routine magnesium monitoring is not standard practice. The occurrence of significant clinical events linked to hypomagnesaemia in 3 patients after parathyroidectomy led to our evaluation of magnesium levels after surgery for PHPT. METHODS Serum magnesium levels before and after parathyroidectomy for PHPT were prospectively evaluated in a single centre over a year. The incidence and severity of hypomagnesaemia and its correlation with other biochemical variables were assessed. RESULTS A total of 138 patients underwent parathyroidectomy for PHPT. Pre-operative and day 1 post-operative serum magnesium levels were available in 57/138 (41.3%) and 99/138 (71.7%) patients, respectively. Serum magnesium decreased significantly after surgery (mean ± SD of 0.85 ± 0.08 and 0.75 ± 0.11 mmol/L, respectively, p < 0.001). On the day after parathyroidectomy, 31/99 (31.3%) patients had hypomagnesaemia (<0.70 mmol/L); in 3 of whom it was severe (<0.50 mmol/L). Patients with hypomagnesaemia had lower pre-operative magnesium (mean ± SD of 0.78 ± 0.06 and 0.87 ± 0.07 mmol/L, p < 0.001), higher pre-operative calcium [median (IQR) of 2.83 (2.71-2.99) and 2.71 (2.63-2.80) mmol/L, p = 0.001] and higher post-operative calcium [median (IQR) of 2.41 (2.30-2.51) and 2.35 (2.28-2.43) mmol/L, p = 0.046] compared to those with normomagnesaemia. In addition, these patients demonstrated higher drop in calcium levels after surgery (0.44 ± 0.20 and 0.35 ± 0.18 mmol/L, p = 0.033). Magnesium levels after surgery correlated positively with pre-operative magnesium (r = 0.561, p < 0.001) and post-operative PTH (r = 0.210, p = 0.037) and negatively with pre-operative adjusted calcium (r = - 0.389, p < 0.001). CONCLUSIONS Serum magnesium decreased significantly following parathyroidectomy for PHPT and nearly a third of patients developed post-operative, mostly mild hypomagnesaemia. Whilst routine serum magnesium measurements could facilitate prompt recognition and treatment of this electrolyte disturbance, further research needs to establish the clinical importance of mild hypomagnesaemia in these clinical settings and, if indicated, to devise optimal treatment strategies.
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Affiliation(s)
- Peter Novodvorsky
- Department of Diabetes and Endocrinology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK. .,Department of Oncology and Metabolism, School of Medicine and Biomedical Sciences, University of Sheffield, Beech Hill Road, S10 2RX, Sheffield, UK.
| | - Andrew F Lowry
- Department of Diabetes and Endocrinology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - C Beverly B Lim
- Department of General Surgery, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Sabapathy P Balasubramanian
- Department of Oncology and Metabolism, School of Medicine and Biomedical Sciences, University of Sheffield, Beech Hill Road, S10 2RX, Sheffield, UK.,Department of General Surgery, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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Zhang A, Li P, Liu Q, Peng S, Huang G, Song S. EFFECT OF POST-SURGICAL RAI THERAPY ON PARATHYROID FUNCTION IN PATIENTS WITH DIFFERENTIATED THYROID CANCER. Endocr Pract 2020; 26:416-422. [PMID: 31968192 DOI: 10.4158/ep-2019-0398] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Objective: Radiotherapy with radioactive iodine (RAI) has become a common treatment for postsurgical differentiated thyroid carcinoma (DTC). The objective of this study was to determine the effect of RAI therapy following surgery on the function of the parathyroid glands in DTC patients. Methods: A total of 81 DTC patients who received RAI therapy after surgery were enrolled in the study. The size of the residual thyroid was detected by technetium-99m (99mTc)-pertechnetate thyroid scan (99mTc thyroid scan) before RAI therapy. The iodine uptake ability of residual thyroid was evaluated by iodine-131 (131I) whole-body scan (WBS). All patients were treated with an activity of 3.7 GBq (100 mCi) 131I. Parathyroid hormone (PTH), serum calcium, phosphorus, and magnesium were evaluated at 1 day before treatment, and at 1 month and 3 months after treatment. Results: The results show that there was no statistically significant difference in blood PTH level observed (P>.05) between 3 time points (pre-treatment, 1 month post-treatment and 3 months post-treatment). The serum calcium and phosphorus did not change significantly (P>.05), but serum magnesium level was elevated after treatment (P<.05). There were no significant differences between PTH changes and sex, age, scores of 99mTc thyroid scan, scores of 131I WBS, Tumor (T) stage, and Node (N) stage. Conclusion: RAI therapy following surgery did not significantly affect parathyroid function in DTC patients. Abbreviations: ATA = American Thyroid Association; DTC = differentiated thyroid carcinoma; FT3 = free triiodothyronine; FT4 = free thyroxine; 131I = iodine-131; PTH = parathyroid hormone; RAI = radioiodine; 99mTc = Technetium-99m; TG = thyroglobulin; TNM = Tumor Node Metastasis; TSH = thyroid-stimulating hormone; WBS = whole-body scan.
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