scholarly journals Study on Rapid Intraoperative Parathyroid Hormone to Identify and Protect Parathyroid Gland during Total Thyroidectomy

2019 ◽  
Vol 8 (05) ◽  
pp. 1-6
Author(s):  
Ding Zhaodong ◽  
Qi Hong ◽  
Wang Ying ◽  
Ma Guiliang
2011 ◽  
Vol 77 (4) ◽  
pp. 484-487 ◽  
Author(s):  
Amy R. Quillo ◽  
Jeffery M. Bumpous ◽  
Richard E. Goldstein ◽  
Muffin M. Fleming ◽  
Ccrp ◽  
...  

The 20 per cent rule proposed by Norman established a guideline using radioactivity in the minimally invasive radioguided parathyroidectomy (MIRP) technique to localize and confirm removal of an abnormal parathyroid gland in patients with primary hyperparathyroidism. If radioactivity in the resected gland was at least 20 per cent of excision site/background radioactivity, the 20 per cent rule was satisfied. Patients meeting these criteria underwent unilateral MIRP without intraoperative parathyroid hormone assay or intraoperative frozen section. The study aim was to independently evaluate the 20 per cent rule in MIRP patients with primary hyperparathyroidism. Using the University of Louisville Parathyroid Database from January 1, 1999 to December 31, 2007, 216 MIRP patients with complete radioguided and postoperative management data were identified. The average percentage of ex vivo parathyroid gland radioactivity compared with excision site/background radioactivity was 107 per cent with a range from 14 to 388 per cent. For 99 per cent (196/198) radioactivity recorded from the excised gland was at least 20 per cent of radioactivity recorded from the excision site. Normocalcemia was documented in 98.5 per cent (195/198) at 12 month follow-up. Our data supports the 20 per cent rule in that in 99 per cent of MIRP patients the resected gland radioactivity was at least 20 per cent of excision site radioactivity allowing localization and confirmation of an overactive gland without intraoperative parathyroid hormone monitoring or tissue analysis.


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.


2007 ◽  
Vol 117 (11) ◽  
pp. 1957-1960 ◽  
Author(s):  
William H. Moretz ◽  
Tammara L. Watts ◽  
Frank W. Virgin ◽  
Edward Chin ◽  
Christine G. Gourin ◽  
...  

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


Author(s):  
Mohamed Abdelaziz ◽  
Ayman Essawy ◽  
Hesham Wageh ◽  
Noha Khalifa ◽  
Mohamed Zydan

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