- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT01045876
The Effect of Dexamethasone on Cortisol Levels in Patients Undergoing Thyroid Surgery
The Effect of Dexamethasone on Plasma Cortisol Levels, Pain and PONV in Female Patients Undergoing Thyroid Surgery
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Purpose To examine the effect of dexamethasone, on plasma cortisol levels, postoperative pain, nausea and vomiting in patients undergoing thyroid surgery.
Hypothesis That dexamethasone administered at induction of anesthesia will result in reduced plasma cortisol levels, postoperative pain, nausea and vomiting.
Justification Dexamethasone is a synthetic steroid medication used routinely to prevent nausea and vomiting in patients undergoing general anesthetic. Administration of exogenous steroids can suppress production of endogenous steroids including cortisol.
Currently, no data exists describing the degree of suppression of cortisol production by a single preoperative dose of dexamethasone. This information would guide physicians prescribing dexamethasone in the perioperative period.
Objectives To compare plasma cortisol levels in patients receiving dexamethasone versus placebo at induction of anesthesia. To investigate the effect of dexamethasone on postoperative pain, nausea and vomiting.
Research Methods A prospective, randomized, controlled, double-blinded study conducted at a single center. Thirty patients will be recruited and randomly assigned to dexamethasone or placebo groups, in accordance with sample size calculations. A placebo group is necessary to eliminate the effects of potential confounding factors.
Statistical Analysis An interim analysis will be conducted to confirm the sample size calculation. Plasma cortisol level will be analyzed using 2-way analysis of variance (ANOVA). Secondary outcome measures will be analyzed with appropriate parametric or nonparametric methods.
Tipo di studio
Fase
- Fase 4
Contatti e Sedi
Luoghi di studio
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British Columbia
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Vancouver, British Columbia, Canada, V6Z 1Y6
- St Paul's Hospital
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Female adult patients
- Undergoing thyroid surgery
- Euthyroid patients
- Qualify as Class I or II according to the American Society of Anesthesiologists physical status classification system
- Written informed consent
Exclusion Criteria:
Patients who have medical conditions associated with abnormalities of the hypothalamic-pituitary-adrenal axis which might alter plasma cortisol levels will be excluded from the study. This category includes the following conditions:
- A diagnosis of anxiety, depression or bipolar disorder
- Disorders of the central nervous system, pituitary gland or hypothalamic-pituitary-adrenal axis
- Diabetes mellitus
- Pathological conditions affecting cortisol metabolism, including liver disease
- Chronic renal failure
- Alcoholism
- Obesity
- Anorexia nervosa/ starvation
- High estrogen states, including pregnancy or use of OCP
Patients taking medication which might alter the normal function of the hypothalamic-pituitary-adrenal axis. This category includes:
- Patients taking exogenous steroid medication which would suppress normal cortisol production.
- Patients taking medication which alters steroid metabolism, including barbiturates, phenytoin and rifampicin.
- Patients who have a known history of allergy, sensitivity or any other form of reaction to dexamethasone will be excluded from this study as they would be at risk of further reaction to dexamethasone.
- Patients who have previously been included in this study will be excluded from further recruitment.
- Patients who will undergo lateral neck dissection in association with the thyroid surgery will be excluded from the study as they will experience greater pain levels.
- Patients who participate in other clinical studies during this study or in the 14 days prior to admission to this study will be excluded
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Quadruplicare
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Comparatore placebo: Placebo
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2 ml of 0.9% Saline Solution administered intravenously at induction of anesthesia
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Sperimentale: Desametasone
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One dose of 8 mg of Dexamethasone intravenously at induction of anesthesia
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
|---|---|
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Plasma Cortisol level.
Lasso di tempo: One, eight and twenty-four hours following Dexamethasone administration.
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One, eight and twenty-four hours following Dexamethasone administration.
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Misure di risultato secondarie
Misura del risultato |
Lasso di tempo |
|---|---|
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Incidence of postoperative nausea and vomiting.
Lasso di tempo: Twenty-four hours following surgery.
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Twenty-four hours following surgery.
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Pain intensity measured on the visual analogue scale.
Lasso di tempo: Twenty-four hours following surgery
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Twenty-four hours following surgery
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Plasma Estradiol level.
Lasso di tempo: One, eight and twenty-four hours following dexamethasone administration.
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One, eight and twenty-four hours following dexamethasone administration.
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Plasma Progesterone level.
Lasso di tempo: One, eight and twenty-four hours following dexamethasone administration
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One, eight and twenty-four hours following dexamethasone administration
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Plasma ACTH level
Lasso di tempo: One, eight and twenty-four hours following dexamethasone administration.
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One, eight and twenty-four hours following dexamethasone administration.
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Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Jill A Osborn, MD, St Paul's Hospital, Vancouver and University of British Columbia
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Anticipato)
Completamento dello studio (Anticipato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Malattie del sistema endocrino
- Malattie della ghiandola surrenale
- Insufficienza surrenalica
- Effetti fisiologici delle droghe
- Agenti autonomi
- Agenti del sistema nervoso periferico
- Agenti antinfiammatori
- Agenti antineoplastici
- Antiemetici
- Agenti gastrointestinali
- Glucocorticoidi
- Ormoni
- Ormoni, sostituti ormonali e antagonisti ormonali
- Agenti antineoplastici, ormonali
- Desametasone
Altri numeri di identificazione dello studio
- SPH-1515-DA
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
Prove cliniche su Dexamethasone
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Loyola UniversityMerck Sharp & Dohme LLCCompletato