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Comparison of Lateral Thermal Spread Using Monopolar and Bipolar Diathermy, and the Bipolar Vessel Sealing System ThermoStapler™ During Thyroidectomy

100%
Brzeziński J., Kałużna-Markowska K., Naze M., Stróżyk G., Dedecjus M.
Polish Journal of Surgery
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2011
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vol. 83
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issue 7
355-360
EN
Electric devices enabling the maintenance of haemostasis during surgery have found application in modern thyroidectomy procedures. The haemostatic effect is associated with generation of heat, which apart from the intended result may bring about thermal tissue injury.The aim of the study was to determine the thermal spread around the active tip of electric devices in the operating field during total thyroidectomy, and the safe temperature range during the operation of studied devices.Materials and methods. Over 14 months from December 2009 until January 2011, 76 total thyroidectomy procedures were analysed. The surgeries employed mono- and bipolar diathermy as well as the ThermoStapler™ bipolar vessel sealing system. During the procedures, the thermal spread around the active tips of used electric devices was recorded with the use of high-definition camera. Comparable 5-second periods of electric device use at two power ranges (30 W and 50 W) were selected from the recorded material. The highest temperature of the active tip of electric devices was determined, and the 42°C isotherm was found with the use of computer image analysis, thus determining the safe distance of important anatomic structures from the active tip of the electric device.Results. The temperature spread around the active tips of electric devices was recorded and the 42°C isotherm was determined. The diameter of this isotherm at the end of operation differed statistically significantly depending on the type of electric devices and power settings. The highest temperature, at both power ranges, was recorded for the bipolar vessel sealing system, while the lowest - for bipolar diathermy; at the same time a significantly lower 42°C isotherm diameter was found for ThermoStapler™ as compared with other devices. In all studied cases, the largest heat spread was found for monopolar diathermy.Conclusions. The mean safe distance of the active tip of an electric device from important anatomic structures is 5 mm and depends on the device type and its power settings. Monopolar diathermy causes the strongest heating of surrounding tissues, and the ThermoStapler™ bipolar vessel sealing system, despite producing the highest temperature during operation, causes relatively small thermal injury to the surrounding tissues.
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Influence of Total Thyroidectomy on Orbital Opthalmopathy and Levels of Antithyroid Antibodies in Patients with Graves' Disease

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Domosławski P., Łukieńczuk T., Forkasiewicz Z., Balcerzak W., Bednarz W., Dawiskiba J., Krawczyk Z., Wojtczak B., Olewiński R., Podhorska-Okołów M.
Polish Journal of Surgery
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2007
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vol. 79
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issue 3
167-172
EN
Graves' disease is an autoimmune disease. One of the most severe complications of Graves' disease is orbitopathy.The aim of the study was to estimate the influence of total thyroidectomy on the postoperative course of exophthalmus and determine the levels of thyroid antibodies after surgery.Material and methods. During the period between 2002 and 2005, 1514 strumectomies were performed at the I Chair and Department of General, Gastroenterological and Endocrine Surgery, Medical University in Wroclaw. The study included 69 (4.5%) patients, who were operated on because of Graves' disease. Forty-two (60%) of these patients had progressive opthalmopathy and were subjected to total thyroidectomy (35 women and 7 men, mean age was 31 years). The diagnosis of Graves' disease was established on the basis of the clinical evaluation, fT3, fT4 and TSH values, as well as the determination of serum thyroid antibody levels. Every patient was subjected to an opthalmological examination, with measurements of the degree of exopthalmus, as compared to the ATA (American Thyroid Association) scale. Above-mentioned parameters were measured before surgery and 6, 12 and 18 months after total thyroidectomy.Results. Considering patients after total thyroidectomy, exophthalmus did not proceed. In 17 (40%) patients, 2- 3 mm of eyeball retraction was noted, mainly during the initial six months. After surgery, a statistically significant reduction of TSH-receptor and anti-TPO antibody values were observed.Conclusions. Total thyroidectomy in patients with Graves' disease and orbital opthalmopathy significantly reduced the progression of orbitopathy. It also leads to the normalization of serum anti-recepor (TRAb) and anti-peroxidase (anti-TPO) antibody levels.Total thyroidectomy is a quick and effective procedure in the hands of an experienced surgeon and should be performed in secondary or tertiary care centers.
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Early predictors of post – thyroidectomy hypoparathyroidism

88%
Sieniawski K., Kaczka K., Paduszyńska K., Fendler W., Tomasik B., Pomorski L.
Polish Journal of Surgery
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2016
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vol. 88(6)
540-555
EN
Thyroid surgery is the most commonly performed procedure in the field of endocrine surgery. Studies are still ongoing on the development of a single algorithm for diagnosis and care of patients at risk of postoperative hypoparathyroidism. The aim of the study was to determine the biochemical marker that would allow the most accurate diagnosis of patient groups at risk of developing hypoparathyroidism and to identify risk factors for this disorder. Material and methods. The prospective study included 142 consecutive patients undergoing total thyroidectomy for benign goiter from January 1st 2014 to December 31st 2015. Serum intact parathyroid hormone (iPTH), total calcium (Ca), phosphate (P), and magnesium (Mg) levels have been measured preoperatively and at 1, 6, 24, and 48 h postoperatively. Results. Clinical symptoms of hypoparathyroidism developed in 25 (17.6%) of 142 patients. The best diagnostic accuracy for hypoparathyroidism based on ROC curves was obtained for iPTH at 6h (AUC 0.942; 95% CI: 0.866-1.000, p<0.001) and its percentage change from baseline ΔiPTH at 6h (AUC 0.930; 95% CI: 0.858-1.000, p<0.001). In an multivariate analysis, the preoperative Ca level higher by 0.1 mmol/l, and iPTH level higher by 0.1 pmol/l were associated with a lower risk of hypoparathyroidism, by 68% (p=0.012) and 61% (p=0.007), respectively. A 1% decline in iPTH from baseline increased the risk of hypoparathyroidism by 15% (p<0.001). Conclusions. The most reliable markers indicating a high risk of postoperative hypoparathyroidism are the decline in ΔiPTH at 6h by > 65% or iPTH level at 6h <1.57 pmol /l. A postoperative decline in iPTH levels is an independent risk factor for the development of hypoparathyroidism. Preoperative higher concentrations of Ca and iPTH are protective factors for the development of this disorder.
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Total Thyroidectomy for Nodular, Benign Thyroid Diseases in Terms of Larynx Function Examinations - Is it a New Treatment Standard?

88%
Kaczka K., Jankowski W., Kopczyński J., Kwiecień J., Pomorski L.
Polish Journal of Surgery
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2010
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vol. 82
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issue 1
4-11
EN
Aim of the study was the assessment of total thyroidectomy (TT) value as a treatment method of goiter with particular emphasis on the results of laryngological examination.Material and methods. From 15th April 2008 to 1st July 2009 there were 125 (72.7%) TTs, 12 (7%) TTs and appropriate lymphadenectomies, 9 (5.2%) near TTs, 14 (8.1%) lobectomies, 5 (2.9%) completion thyroidectomies and 6 (3.4%) other operations. Vocal cords function was assessed routinely one day before, two days after operation by an otolaryngologist. Voice quality was assessed by patients in VHI questionnaire theirselves.Results. Five patients had one-sided vocal cord paralysis before the operation. The one-sided transient recurrent laryngeal nerve injuries was observed in 16 other patients (9.3% among patients and 4.6% among nerves at risk) in the second day after the operation. There was no bilateral recurrent laryngeal nerve injury. From three to six months after the operation, 21 (among 23) patients with vocal cord movement disability were examined once again by the same otolaryngologist. The same vocal cord paralysis was observed in 4 sicks (one person died), which was found preoperatively. Seven (4%) other patients had permanent one vocal cord paresis. This represents 2% the nerves at risk. Three of them were recognized benign lesions and four thyroid cancer. Our percentage of early, postoperative hypoparathyroidism was 6.4% and persistent was 1.7%. VHI score in the group with paresis or paralysis of vocal cord gave the score of 4 to 90 points- an average of 49 points. In patients with proper vocal cord movement there were results from 0 to 6 points- an average of 2 points.Conclusions. 1. Total thyroidectomy in the treatment of bilateral goiter without malignancy features is radical and safe procedure. 2. It protects against goiter relapse and its consequences. 3. Complications rates after total thyroidectomy are at acceptable and comparable proportions to the other operation types.
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