The Effect of Preoperative Oral Dexamethasone Supplementation on the Outcome of Thyroidectomised Patients.

Postoperative Pain Clinical Trial

— Dexa  

Official title:

The Impact of Preoperative Oral Dexamethasone Supplementation on the Biochemical Parameters and Results of Surgical Treatment in Patients With Nontoxic Multinodular Goiter Undergoing Total Thyroidectomy.

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04412694
• Other study ID #: MULODZ nr RNN/133/20/KE
• Status: Recruiting
• Phase: Phase 4
• Start date: July 1, 2020
• Est. completion date: December 2022

Study information

• Verified date: February 2022
• Source: Medical University of Lodz
• Contact: Anna Grzegory, MD
• Phone: 695720008
• Email: an.grzegory[@]gmail.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Glucocorticoids are well known for their analgesic, anti-inflammatory, immunomodulatory and anti-emetic effects. Recovery time after thyroid surgery may depend on several factors, such as postoperative pain, nausea and vomiting, postoperative sore throat, voice disorders and symptomatic hypocalcaemia (low serum calcium level). However, there is little information in the literature about the preventive use of glucocorticosteroids in patients undergoing thyroid surgery. The aim of the study is to evaluate the clinical impact of preoperative oral dexamethasone supplementation on the surgical outcome in patients with multinodular goiter undergoing total thyroidectomy. Patients will be assigned to the supplementation group and the placebo group. In the supplementation group 8mg of dexamethasone will be administered orally one hour before surgery. In the postoperative period, the frequency and intensity of pain, nausea, vomiting, sore throat and hoarseness will be assessed. The incidence of symptoms of hypocalcaemia will also be evaluted. Preoperative and postoperative levels of vitamin D, cytokines, acute phase proteins and substances related to calcium metabolism will be measured in the blood. Cytokines levels in drainage fluid will also be assessed. The main hypothesis of the study is that in patients with supplementation postoperative discomfort and decrease in serum calcium and parathormone level and hypocalcemic symptoms will be less severe and the levels of proinflammatory substances will be decreased.

Description:

Recovery time after thyroid surgery may depend on several factors, such as postoperative pain, nausea and vomiting, postoperative sore throat, phonation disorders associated with recurrent laryngeal nerve palsy, and symptomatic postoperative hypocalcaemia associated with postoperative hypoparathyroidism.

Glucocorticoids are well known for their analgesic, anti-inflammatory, immunomodulatory and anti-emetic effects. However, there is little information in the literature on the prophylactic use of glucocorticosteroids in patients undergoing thyroid surgery. In some previous studies, preoperative intravenous dexamethasone supplementation was associated with a reduced incidence of postoperative laryngeal nerve palsy, postoperative hypoparathyroidism, and with less severe postoperative pain, postoperative sore throat, nausea and vomiting. Patients receiving supplementation also had decreased levels of inflammatory biochemical parameters and proinflammatory cytokines.

Vitamin D deficiency is widespread in Poland. Vitamin D status has an impact on the postoperative complications in surgical patients. In previous study serum 25-hydroxyvitamin D is also suggested as a negative acute phase reactant, which has implications for acute and chronic inflammatory diseases. According to the authors, serum 25-hydroxyvitamin D level is an unreliable biomarker of vitamin D status after acute inflammatory insult.

In the early stages of inflammation, phagocytic cells and endothelium secrete proinflammatory cytokines, which include: interleukins: IL-1 α / β, IL-6, IL-8, TNF. The antagonistic group is anti-inflammatory cytokines, which include interleukins: IL-4, -5, -10, -13, produced by Th2 lymphocytes. These cytokines reduce the amount of interleukins secreted by Th1 lymphocytes.

Changes in the levels of proinflammatory and anti-inflammatory cytokines in the postoperative period were found in studies related to the assessment of surgical trauma. Pro-inflammatory interleukin 1 and interleukin 6 play an important role in many biological processes such as inflammation, sepsis and wound healing. Interleukin 6 expression is proportional to the extent of the surgical trauma. In turn, interleukin 10 is known as a cytokine that inhibits cytokine synthesis. Is one of the strongest immunosuppressive agents.

The aim of my study is to evaluate the impact of preoperative oral dexamethasone supplementation on the biochemical parameters and results of surgical treatment in patients with nontoxic multinodular goiter undergoing total thyroidectomy.

Patients admitted to the Department of General and Oncological Surgery, Medical University of Lodz with preoperative diagnosis of nontoxic multinodular goitre undergoing total thyroidectomy will be inculded to the study.

After obtaining written informed consent from all participants during a preoperative visit, they will be randomized to the supplementation group and the placebo group. The study will be a prospective, placebo-controlled and double-blind (for patient and surgeon) research.

Intervention: In the supplementation group a single dose of 8mg of dexamethasone will be given orally one hour before surgery (Dexamethasone Krka tablets (8mg), Warsaw, Poland). In the placebo group patients will receive a single tablet of sweetener one hour before operation (Clio tablets, sweetener with a dispenser, Instantina GES, Vienna, Austria).

Preoperatively in the group of all enrolled patients (in the supplementation group and in the placebo group) following tests will be measured in serum: blood count, calcium, inorganic phosphates, albumin, alkaline phosphatase, C reactive protein, procalcitonin, 25-hydroxyvitamin D, fibrinogen, parathormone, magnesium, interleukin 1β, interleukin 6, interleukin 10, thyroid stimulating hormone, free thyroxine, free triiodothyronine.

Total thyroidectomies with routine identification of the recurrent laryngeal nerves and parathyroid glands via a transverse cervicotomy under general anaesthesia will be performed by 3 experienced surgeons.

During the total thyroidectomy the number of parathyroid glands found intraoperatively will be registered.

At 6 hour after surgery in the group of all enrolled patients following tests will be measured in serum: blood count, calcium, inorganic phosphates, albumin, alkaline phosphatase, C reactive protein, procalcitonin, 25-hydroxyvitamin D, fibrinogen, parathormone, magnesium. In addiction, at 6 hour after surgery the incidence and intensity of symptomatic hypocalcaemia, postoperative pain (according to VAS scale), postoperative nausea and vomiting, postoperative sore throat and hoarseness will be evaluated.

At 24 hour after surgery in the group of all enrolled patients following tests will be measured in serum: blood count, calcium, inorganic phosphates, albumin, alkaline phosphatase, C reactive protein, procalcitonin, 25-hydroxyvitamin D, fibrinogen, parathormone, magnesium, interleukin 1β, interleukin 6, interleukin 10. Additionally, the level of interleukin 1β, interleukin 6 and interleukin 10 will be evaluated in drainage fluid. In addiction, at 24 hour after surgery the incidence and intensity of symptomatic hypocalcaemia, postoperative pain (according to Visual Analogue Scale - VAS scale), postoperative nausea and vomiting, postoperative sore throat and hoarseness will be evaluated.

The laboratory parameters will be determined by electrochemiluminescence on the Cobas E411 analyzer and spectrophotometric method on the AU680, Beckman Coulter analyzer. 25-hydroxyvitamin D levels will be measured using the chemiluminescent microparticle immunoassay (CMIA) (Architect 25-OHD). Interleukins levels will be determined by enzyme immunoassay method (EIA) (DGR Medtek) on ElizaMat 2 X analyzer.

Hypocalcemic symptoms will be categorized as mild (a tingling sensation and numbness of the hands or feet and perioral numbness) or severe (a positive Chvostek sign, Trousseau sign, tetany, and carpopedal spasms).

Postoperative hypocalcaemia will be defined as corrected calcium levels <2.0 mmol/l, even if recorded in one measurement only.

In both groups participants who will develop postoperative hypoparathyroidism (parathormone level <1.6 pmol/l at 6 or 24 hour after surgery) or symptomatic hypocalcaemia during hospitalisation will be treated with oral calcium (3 g/d - taken 1 g every 8 hours) and vitamin D derivatives (1 ug/d alfacalcidol taken once).

Intravenous calcium gluconate will be administered if symptoms persist despite oral supplementation.

Patients with symptomatic hypocalcaemia will receive supplementation until the symptoms subside. The treatment will be extended to 6 weeks in patients with hypoparathyroidism on the day of discharge.

The data will be statistically analysed. The main hypothesis of the study is that in patients with supplementation postoperative discomfort and decrease in serum calcium and parathormone level and hypocalcemic symptoms will be less severe and the levels of proinflammatory substances will be decreased. Vitamin D deficiency is probably common in operated patients and postoperative 25-hydroxyvitamin D levels are lower than those measured preoperatively.

The use of oral dexamethasone might be an effective strategy of prevention of complications after total thyroidectomy.

To the best of our knowledge, this is a pioneering study assessing the usefulness of preventive oral dexamethasone supplementation before total thyroidectomy in homogeneous group of patients with nontoxic multinodular goiter undergoing total thyroidectomy.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 100
• Est. completion date: December 2022
• Est. primary completion date: September 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 100 Years

Eligibility

Inclusion Criteria:

• patient's consent

• adult patients

• preoperative diagnosis of nontoxic multinodular goiter

• total thyroidectomy

Exclusion Criteria:

• lack of patient's consent

• hyperthyroidism currently or in the past

• retrosternal goiter

• thyroid malignanacy or suspected malignant thyroid tumor

• parathyroids disease

• malingant tumor in any location currently or in the past

• state after neck surgery

• state after radiotherapy

• bone diseases, osteoporosis

• sarcoidosis

• liver failure, hepatitis

• kidney stones, kidney failure (eGFR<60ml/min/1.73m2)

• taking nonsteroidal anti-inflammatory drugs

• steroid treatment

• stomach and duodenal ulcer disease currently or in the past

• active infection at the time of the study

• history of tuberculosis

• a period of 8 weeks before and 2 weeks after administration of the live vaccine

• unregulated hypertension

• diabetes

• psychiatric disorders

• glaucoma

• corneal ulcers or corneal injuries

• severe heart failure

• pheochromocytoma

• myasthenia gravis

• epilepsy

• head injury

• ulcerative colitis

• diverticulitis

• pregnancy

• breast-feeding

• hypokalaemia

• galactose intolerance

• lactase deficiency

• dexamethasone allergy, allergic to lactose, allergic to gelatinized starch, allergic to corn starch, allergic to colloidal anhydrous silica, allergic to magnesium stearate

• allergic reaction to substances contained in the sweetener: sodium cyclamate, sodium saccharin, sodium bicarbonate, sodium citrate.

• taking medications that affect calcium metabolism: anti-resorptive drugs, anabolic drugs, bisphosphonates, systemic glucocorticosteroids, thiazide diuretics, furosemide, proton pump inhibitors, antacids containing magnesium or aluminum salts, cholestyramine, colestipol, paraffin oil, salicylates, estrogen-containing oral contraceptives (hormonal contraceptives) , preparations containing calcium salts (regular intake), preparations of vitamin D or its analogues (regular intake)

• taking medications that increase the side effect of dexamethasone or enter into drug interactions with dexamethasone: acetazolamide, loop diuretics, thiazide diuretics, diuretics, amphotericin B, glucocorticosteroids, mineralocorticosteroids, tetracosactide and laxatives, carbenoxolone, chlorokine, hydroxychlorokine and meflocin, angiotensin converting enzyme inhibitors, thalidomide, cholinesterase inhibitors in patients with myasthenia gravis, fluorochonolones, ephedrine, barbiturates, rifabutin, rifampicin, phenytoin and carbamazepine, aminoglutethimide, bile acid binding resins, such as cholestyramine, antacids,activated carbon, antifungal azoles, ketoconazole, HIV protease inhibitors, macrolide antibiotics, estrogens, anti-tuberculosis drugs (isoniazid), cyclosporin, praziquantel, oral anticoagulants (coumarin), atropine and other anticholinergic drugs, somatotropin, protirel.

Related Conditions & MeSH terms

• Dysphonia
• Hoarseness
• Hypocalcemia
• Hypoparathyroidism
• Hypoparathyroidism Postprocedural
• Nausea
• Pain, Postoperative
• Postoperative Complications
• Postoperative Nausea
• Postoperative Nausea and Vomiting
• Postoperative Pain
• Vitamin D Deficiency
• Voice Hoarseness

Intervention

Drug:
• Dexamethasone oral tablet 8mg (Dexamethasone Krka tablets(8mg), Warsaw, Poland).
Preoperative oral dexamathasone supplementation in a single dose of 8mg.
• Placebo oral sweetener (Clio tablets, sweetener with a dispenser, Instantina GES, Vienna, Austria).
Preoperative oral supplementation of sweetener in a single dose.

Diagnostic Test:
• Preoparative blood laboratory tests
Preoperative parameters such as blood count, calcium, inorganic phosphates, albumin, alkaline phosphatase, C reactive protein, procalcitonin, 25-hydroxyvitamin D, fibrinogen, parathormone, magnesium, interleukin 1ß, interleukin 6, interleukin 10, thyroid stimulating hormone, free thyroxine, free triiodothyronin will be measured in serum.
• Postoperative laboratory blood tests at 6 hour
At 6 hour after surgery such parameters as blood count, calcium, inorganic phosphates, albumin, alkaline phosphatase, C reactive protein, procalcitonin, 25-hydroxyvitamin D, fibrinogen, parathormone, magnesium will be measured in serum.
• Postoperative laboratory blood tests at 24 hour
At 24 hour after surgery such parameters as blood count, calcium, inorganic phosphates, albumin, alkaline phosphatase, C reactive protein, procalcitonin, 25-hydroxyvitamin D, fibrinogen, parathormone, magnesium, interleukin 1ß, interleukin 6, interleukin 10 will be measured in serum.
• Postoperative laboratory drainage fluid tests at 24 hour
At 24 hour after surgery such parameters as interleukin 1ß, interleukin 6, interleukin 10 will be measured in drainage fluid.

Procedure:
• Total thyroidectomy
Patients will undergo total thyroidectomy under general anesthesia.

Other:
• Symptomatic hypocalcaemia at 6 hour
At 6 hour after surgery patients will be assessed for signs of hypocalcaemia.
• Symptomatic hypocalcaemia at 24 hour
At 24 hour after surgery patients will be assessed for signs of hypocalcaemia.
• Postoperative pain at 6 hour
At 6 hour after surgery the incidence and intensity of postoperative pain will be evaluated according to Visual Analogue Scale (VAS).
• Postoperative pain at 24 hour
At 24 hour after surgery the incidence and intensity of postoperative pain will be evaluated according to Visual Analogue Scale (VAS).
• Postoperative nausea and vomiting at 6 hour
At 6 hour after surgery the incidence and intensity of postoperative nausea and vomiting will be evaluated.
• Postoperative nausea and vomiting at 24 hour
At 24 hour after surgery the incidence and intensity of postoperative nausea and vomiting will be evaluated.
• Postoperative sore throat and hoarseness at 6 hour
At 6 hour after surgery the incidence and intensity of postoperative sore throat and hoarseness will be evaluated.
• Postoperative sore throat and hoarseness at 24 hour
At 24 hour after surgery the incidence and intensity of postoperative sore throat and hoarseness will be evaluated.

Locations

Country	Name	City	State
Poland	Department of General and Oncological Surgery, Medical University of Lodz	Lódz	Lódzkie

Sponsors (1)

Lead Sponsor	Collaborator
Medical University of Lodz

Country where clinical trial is conducted

Poland, 

References & Publications (11)

Bennett NT, Schultz GS. Growth factors and wound healing: biochemical properties of growth factors and their receptors. Am J Surg. 1993 Jun;165(6):728-37. Review. — View Citation

Calkosinski I, Dobrzynski M, Calkosinska M, Seweryn E, Bronowicka-Szydelko A, Dzierzba K, Ceremuga I, Gamian A. [Characterization of an inflammatory response]. Postepy Hig Med Dosw (Online). 2009 Sep 3;63:395-408. Review. Polish. — View Citation

Delogu G, Antonucci A, Signore M, Marandola M, Tellan G, Ippoliti F. Plasma levels of IL-10 and nitric oxide under two different anaesthesia regimens. Eur J Anaesthesiol. 2005 Jun;22(6):462-6. — View Citation

Gailit J, Clark RA. Wound repair in the context of extracellular matrix. Curr Opin Cell Biol. 1994 Oct;6(5):717-25. Review. — View Citation

Kalayci D, Dikmen B, Kaçmaz M, Taspinar V, Ornek D, Turan O. [Plasma levels of interleukin-10 and nitric oxide in response to two different desflurane anesthesia flow rates]. Braz J Anesthesiol. 2014 Jul-Aug;64(4):292-8. doi: 10.1016/j.bjan.2013.06.009. Epub 2014 Jun 3. Portuguese. — View Citation

Pludowski P, Ducki C, Konstantynowicz J, Jaworski M. Vitamin D status in Poland. Pol Arch Med Wewn. 2016 Aug 9;126(7-8):530-9. doi: 10.20452/pamw.3479. Epub 2016 Aug 9. — View Citation

Sakamoto K, Arakawa H, Mita S, Ishiko T, Ikei S, Egami H, Hisano S, Ogawa M. Elevation of circulating interleukin 6 after surgery: factors influencing the serum level. Cytokine. 1994 Mar;6(2):181-6. — View Citation

Schietroma M, Cecilia EM, Carlei F, Sista F, De Santis G, Lancione L, Amicucci G. Dexamethasone for the prevention of recurrent laryngeal nerve palsy and other complications after thyroid surgery: a randomized double-blind placebo-controlled trial. JAMA Otolaryngol Head Neck Surg. 2013 May;139(5):471-8. doi: 10.1001/jamaoto.2013.2821. Retraction in: JAMA Otolaryngol Head Neck Surg. 2018 Dec 1;144(12):1089. — View Citation

Turan A, Hesler BD, You J, Saager L, Grady M, Komatsu R, Kurz A, Sessler DI. The association of serum vitamin D concentration with serious complications after noncardiac surgery. Anesth Analg. 2014 Sep;119(3):603-612. doi: 10.1213/ANE.0000000000000096. — View Citation

Waldron JL, Ashby HL, Cornes MP, Bechervaise J, Razavi C, Thomas OL, Chugh S, Deshpande S, Ford C, Gama R. Vitamin D: a negative acute phase reactant. J Clin Pathol. 2013 Jul;66(7):620-2. doi: 10.1136/jclinpath-2012-201301. Epub 2013 Mar 1. — View Citation

Yang C, Jung SM, Bae YK, Park SJ. The effect of ketorolac and dexamethasone on the incidence of sore throat in women after thyroidectomy: a prospective double-blinded randomized trial. Korean J Anesthesiol. 2017 Feb;70(1):64-71. doi: 10.4097/kjae.2017.70.1.64. Epub 2016 Nov 25. — View Citation

* Note: There are 11 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Cytokines in serum	To evaluate the serum levels of cytokines such as interleukin 1ß, interleukin 6, interleukin 10 and the change in cytokines levels in the postoperative period in the supplementation group and in the placebo group.	preoperatively and at 6 and 24 hour after surgery
Other	Cytokines in drain fluid	To evaluate the levels of cytokines such as interleukin 1ß, interleukin 6, interleukin 10 in the drain fluid in the postoperative period in the supplementation group and in the placebo group.	at 24 hour after surgery
Other	Calcium phosphate homeostasis	To evaluate the serum levels of alkaline phosphatase,inorganic phosphates and magnesium and the change in their levels in the postoperative period in the supplementation group and in the placebo group.	preoperatively and at 6 and 24 hour after surgery
Other	Vitamin D	To evaluate the levels of 25-hydroxyvitamin D in the preoperative and postoperative period and the change in its levels in the supplementation group and in the placebo group. To evaluate the incidence of vitamin D deficiency in the group of operated patients.	preoperatively and at 6 and 24 hour after surgery
Other	Acute phase proteins	To evaluate the serum levels of albumin, C reactive protein, procalcitonin and fibrinogen and the change in their levels in the postoperative period in the supplementation group and in the placebo group.	preoperatively and at 6 and 24 hour after surgery
Primary	Postoperative hypocalcaemia	To evaluate the incidence of laboratory hypocalcaemia (corrected calcium serum level <2.0 mmol/l), the change in calcium levels and symptomatic hypocalcaemia in the postoperative period in the supplementation group and in the placebo group.	preoperatively and at 6 and 24 hour after surgery
Primary	Postoperative hypoparathyroidism	To evaluate the incidence of hypoparathyroidism (parathormone serum level <1.6 pmol/l) and the change in parathormone levels in the postoperative period in the supplementation group and in the placebo group.	preoperatively and at 6 and 24 hour after surgery
Secondary	Postoperative pain	To evaluate the intensity of postoperative pain according to Visual Analogue Scale (VAS scale) in the postoperative period in the supplementation group and in the placebo group. Minimum value is 0 (no pain) and maximum value is 10 (the worst possible pain). Higher scores mean a worse outcome.	at 6 and 24 hour after surgery
Secondary	Postoperative nausea on a verbal rating scale	To evaluate the incidence and the intensity of postoperative nausea in the postoperative period in the supplementation group and in the placebo group. The intensity of nausea will be rated on a verbal rating scale based on verbal responses of the patient to questions: 0 - no nausea; 1 - mild nausea (1 episode of nausea); 2 - moderate nausea (2 or 3 episodes of nausea ); and 3 - severe nausea (>3 episodes of nausea ). Higher scores mean a worse outcome.	at 6 and 24 hour after surgery
Secondary	Postoperative vomiting on a verbal rating scale	To evaluate the incidence and the intensity of postoperative vomiting in the postoperative period in the supplementation group and in the placebo group.The intensity of vomiting will be rated on a verbal rating scale based on verbal responses of the patient to questions: 0 - no episodes of vomiting; 1 - mild vomiting (1 episode of vomiting); 2 - moderate vomiting (2 or 3 episodes of vomiting); and 3 - severe vomiting (>3 episodes of vomiting).Higher scores mean a worse outcome.	at 6 and 24 hour after surgery
Secondary	Postoperative sore throat on a verbal rating scale	To evaluate the incidence and the intensity of postoperative sore throat in the postoperative period in the supplementation group and in the placebo group. Postoperative sore throat will be defined as discomfort at larynx or pharynx at rest and during swallowing after surgery. The intensity of sore throat will be rated on a verbal rating scale based on verbal responses of the patient to questions: 0 - none; 1 - mild sore throat (less severe than with a cold); 2 - moderate sore throat (similar with a cold); and 3 - severe sore throat (more severe than with a cold). Higher scores mean a worse outcome.	at 6 and 24 hour after surgery
Secondary	Postoperative hoarseness on a verbal rating scale	To evaluate the incidence and the intensity of postoperative hoarseness in the postoperative period in the supplementation group and in the placebo group. The intensity of hoarseness will be rated on a verbal rating scale based on verbal responses of the patient to questions: 0 - none; 1 - mild hoarseness (noticed by the patient only); 2 - severe hoarseness (obvious to observer); 3 - aphonia (silence of voice). Higher scores mean a worse outcome.	at 6 and 24 hour after surgery