Predictive Value of Intraoperative Parathyroid Hormone for Hypocalcemia following Total Thyroidectomy

2014 ◽  
Vol 151 (1_suppl) ◽  
pp. P63-P63
Author(s):  
David S. H. Kim ◽  
Annabel E. Barber ◽  
Robert C. Wang
2007 ◽  
Vol 5 (4) ◽  
pp. 0-0
Author(s):  
Algirdas Šlepavičius ◽  
Virgilijus Beiša

Algirdas Šlepavičius1,  Virgilijus Beiša21 Klaipėdos universitetinės ligoninės Pilvo ir endokrininės chirurgijos skyrius,Liepojos g. 41, LT-92288 KlaipėdaEl paštas: [email protected] Vilniaus universiteto ligoninės Santariškių klinikų Pilvo chirurgijos ir gastroenterologijos klinika,Santariškių g. 2, LT-08661 VilniusEl paštas: [email protected] Įvadas / tikslas Intaktinio intraoperacinio parathormono (IOPTH) koncentracija kaip prieskydinių liaukų funkcijos rodiklis dažnai nustatoma operuojant nuo pirminio ir antrinio hiperparatiroidizmo. Šio perspektyviojo tyrimo tikslas – išanalizuoti IOPTH galimybes pooperaciniam hipoparatiroidizmui prognozuoti skydliaukės chirurgijoje. Ligoniai ir metodai Klaipėdos ligoninės Pilvo ir endokrininės chirurgijos skyriuje ir Vilniaus universiteto ligoninės Santariškių klinikų Pilvo chirurgijos centre nuo 2005 m. birželio 1 d. iki 2006 m. sausio 1 d. 89 ligoniams, praėjus 10 minučių po tiroidektomijos, buvo tiriama IOPTH koncentracija kraujyje. Kalcio koncentracija kraujyje buvo tikrinama praėjus 24, 48 ir 72 val. po operacijos. Visi operuotieji suskirstyti į dvi grupes: ligoniai, kuriems po tiroidektomijos nebuvo hipoparatiroidizmo reiškinių (A grupė n = 78), ir ligoniai, kuriems po tiroidektomijos išsivystė hipoparatiroidizmo požymiai (B grupė n = 11). Palyginti abiejų gupių ligonių IOPTH ir kalcio koncentracijos kraujyje skirtumai bei hipoparatiroidizmo klinikinės išraiškos priklausomybė nuo IOPTH ir kalcio koncentracijos kraujyje. Rezultatai Iš 89 ligonių vienuolikai (12,4%) po visiškosios tiroidektomijos išsivystė pooperacinis hipoparatiroidizmas. Simptomai pasireiškė nuo 24 val. iki 52 val. po operacijos. Ligonių, kuriems po operacijos išsivystė hipoparatiroidizmo klinika, vidutinė IOPTH koncentracija kraujyje buvo daug mažesnė (7,2 ± 1,32 pg/ml) nei tų, kuriems hipoparatiroidizmo klinikos nebuvo (42 ± 2,79 pg/ml) (p < 0,05). Po tiroidektomijos mažesnė nei 10 pg/ml IOPTH koncentracija kraujyje turėjo 90,9% jautrumą ir 100% specifiškumą prognozuojant pooperacinį hipoparatiroidizmą. Teigiama numatymo vertė 100%, neigiama numatymo vertė 90%. Išvada Jei IOPTH koncentracija kraujyje praėjus 10 minučių nuo skydliaukės pašalinimo yra mažesnė nei 10 pg/ml, galime prognozuoti pooperacinį hipoparatiroidizmą. IOPTH tyrimas klinikinėje praktikoje leidžia laiku pradėti gydyti rizikos grupės ligonius kalcio preparatais, o jei reikia – ir vitaminu D, o ne rizikos grupės ligonius būtų galima gerokai anksčiau išleisti į namus. Pagrindiniai žodžiai: intraoperacinis parathormono matavimas, visiškoji tiroidektomija, pooperacinis hipoparatiroidizmas Intraoperative parathyroid hormone level monitoring for predicting postoperative hypoparathyroidism after total thyroidectomy Algirdas Šlepavičius1,  Virgilijus Beiša21 Klaipėda University Hospital, Department of Abdominal and Endocrine Surgery,Liepojos str. 41, LT-92288 Klaipėda, LithuaniaE-mail: [email protected] Kaunas University of Medicine,Insitute for Biomedical Research,Eivenių g. 4, LT-50009 Kaunas, LithuaniaE-mail: [email protected] Background / objective Intraoperative parathyroid hormone (IOPTH) levels are usually not monitored during thyroidectomy, although they are widely used during parathyroidectomy as an indicator of parathyroid gland function.This prospective study evaluated the occurrence of hypoparathyroidism after total thyroidectomy and the use of IOPTH levels for predicting the postoperative hypoparathyroidism and the need for postoperative vitamin D and Ca supplementation. Patients and methods Eighty nine patients underwent total thyroidectomy at the Department of Abdominal and Endocrine Surgery of Klaipėda University Hospital and at the Abdominal Center of Vilnius University Hospital Santariškių Klinikos from 01-06-2005 to 01-01-2006. The IOPTH was measured 10 min after thyroidectomy. Postoperative calcium levels were monitored 24, 48 and 72 hours after surgery. IOPTH levels were correlated with postoperative calcium levels and clinical symptoms of hypocalcemia. Patients with symptomatic hypocalcemia are compared with asymptomatic patients. Results Twelve patients developed hypocalcemia after thyroidectomy. The onset of symptomatic hypocalcemia ranged from 24 to 52 hours. The mean IOPTH level (7.2 ± 1.32 pg/ml) in patients who developed symptomatic hypocalcemia was significantly lower than the mean IOPTH level (42 ± 2.79 pg/ml) in patients without symptoms (p < 0.05). An IOPTH level less than 10 pg/ml had a sensitivity of 90%, a specifity of 100%, a positive predictive value of 100%, and a negative predictive value of 90% for the development of symptomatic hypocalcemia. Conclusion An IOPTH level less than 10 pg/ml 10 minutes after total thyroidectomy is a strong predictor of hypoparathyroidism. The incorporation of the IOPTH assay in the management of thyroid diseases is recommended to prevent and prospectively treat symptomatic hypocalcemia. Key words: Intraoperative parathyroid hormone monitoring, postoperative hypoparathyroidism, total thyroidectomy


2016 ◽  
Vol 8 (3) ◽  
pp. 203-207 ◽  
Author(s):  
MJ Paul ◽  
Thomas V Paul ◽  
Deepak T Abraham ◽  
Anish Cherian

ABSTRACT Aims Total thyroidectomy is significantly complicated by parathyroid dysfunction and hypocalcemia. These aspects impact the decision regarding the timing of discharge and quantum of calcium supplementation required. Therefore, we aimed at evaluating the accuracy of next-day parathyroid hormone (PTH) level as a predictor of post-thyroidectomy hypocalcemia. Secondly, we aimed at establishing our institution's postoperative PTH level, which can accurately predict the development of post-thyroidectomy hypocalcemia to help us ensure the safe and early discharge of patients. Materials and methods A prospective observational study of 50 continuous patients undergoing thyroidectomy was conducted at a tertiary hospital in South India. Postoperative blood samples were collected for estimation of PTH, calcium, albumin, and phosphorous. The data were collated and results analyzed using Stata I/C 10.1. Results A total of 30% (15/50) of the patients had postoperative hypocalcemia (serum calcium <8 mg/dL). Postoperative PTH was low (<8 pg/mL) in 40% (20/50) of patients. There was a significant association between PTH < 8 pg/mL and the presence of postoperative hypocalcemia (p = 0.029). The area under the receiver operating characteristic (ROC) curve was 0.7, and a next-day PTH of <6 pg/mL showed the highest sensitivity and specificity (83 and 60% respectively) for the development of postoperative hypocalcemia, with a positive predictive value (PPV) and negative predictive value (NPV) of 83 and 60 respectively. Conclusion The PTH assessment performed the day after surgery is an acceptable test to predict post-thyroidectomy hypocalcemia; PTH <6 pg/mL can be used as our institution's cutoff value. Department protocols for calcium and vitamin D supplementation following total thyroidectomy may be formulated based on the appropriately timed local postoperative PTH value to assist safe and early discharge of patients. Clinical significance Discharge protocols for patients undergoing thyroidectomy may be formulated based on the postoperative PTH values, thus enabling safe and early discharge of patients. How to cite this article Cherian AJ, Ramakant P, Paul TV, Abraham DT, Paul MJ. Next-day Parathyroid Hormone as a Predictor of Post-thyroidectomy Hypocalcemia. World J Endoc Surg 2016;8(3):203-207.


2019 ◽  
Vol 160 (4) ◽  
pp. 612-615 ◽  
Author(s):  
Bradley R. Lawson ◽  
Andrew M. Hinson ◽  
Jacob C. Lucas ◽  
Donald L. Bodenner ◽  
Brendan C. Stack

Objective To quantify how frequently intraoperative parathyroid hormone levels increase during thyroid surgery and to explore a possible relationship between secondary hyperparathyroidism due to vitamin D deficiency and elevation in intraoperative parathyroid hormone. Study Design Case series with chart review. Setting Tertiary academic center. Subjects and Methods A total of 428 consecutive patients undergoing completion and total thyroidectomy by the senior author over a 7-year period were included for analysis. All patients had baseline and postexcision intraoperative parathyroid hormone levels as well as vitamin D levels from the same laboratory. Institute of Medicine criteria were employed for vitamin D stratification (>30, normal; 20-29.9, insufficient; <20, deficient) . Other data analyzed include sex, age, neck dissection status, and parathyroid autotransplantation. Results A total of 118 patients (27.6%) had an intraoperative parathyroid hormone elevation above baseline. Patients with vitamin D deficiency were significantly more likely to experience hormone elevation ( P = .04). When parathyroid hormone rose, it did so by a mean 32.1 pg/mL. Patients with vitamin D deficiency demonstrated significantly larger hormone increases ( P = .03). Conclusion Elevation in intraoperative parathyroid hormone levels above baseline after completion and total thyroidectomy occurs in over one-fourth of cases and is significantly associated with vitamin D deficiency. This study is the first to report this observation. We hypothesize that vitamin D deficiency in these patients may create a subclinical secondary hyperparathyroidism that leads to intraoperative parathyroid hormone elevation when the glands are manipulated. Additional studies will be needed to explore this physiologic mechanism and its clinical significance.


2013 ◽  
Vol 38 (3) ◽  
pp. 84-89 ◽  
Author(s):  
MS Islam ◽  
T Sultana ◽  
D Paul ◽  
AHMZ Huq ◽  
AA Chowdhury ◽  
...  

Postoperative hypocalcaemia is the most frequent and common complication after total thyroidectomy. It is necessary to diagnose or to predict hypocalcaemia immediately after total thyroidectomy for minimizing complications. A prospective observational study was carried out in the Department of Clinical Pathology in collaboration with Department of Microbiology & Immunology, Department of Surgery, Department of Otolaryngology, Bangabandhu Sheikh Mujib Medical University (BSMMU) and Department of Otolaryngology, Dhaka Medical College & Hospital (DMC&H), Dhaka, during the period of September 2010 to August 2011 to evaluate intraoperative (20 minutes after total thyroidectomy) parathyroid hormone (PTH) measurement as a predictor of post thyroidectomy hypocalcaemia. Total 65 patients were enrolled in this study those came for total thyroidectomy. Postoperative hypocalcaemia developed in 25 cases. Intraoperative PTH was assessed and significant correlation was found between intraoperative PTH level and development of hypocalcaemia. The sensitivity, specificity, accuracy, positive predictive value, negative predictive value of intraoperative serum PTH for prediction of post total thyroidectomy hypocalcaemia were 84.0%, 85.0%, 84.6%, 77.8%, and 89.5% respectively. Because of the high sensitivity, specificity and accuracy of intraoperative serum PTH of this study, the early prediction of hypocalcaemia could be made by single assay of intraoperative serum PTH level at 20 minutes after total thyroidectomy. DOI: http://dx.doi.org/10.3329/bmrcb.v38i3.14331 Bangladesh Med Res Counc Bull 2012; 38(3): 84-89 (December)


2017 ◽  
Vol 7 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Camille Galy-Bernadoy ◽  
Benjamin Lallemant ◽  
Guillaume Chambon ◽  
Huy Trang Pham ◽  
Christophe Reynaud ◽  
...  

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