Intraperitoneal Dexamethasone Spraying on Vagal Nerve-Rich Areas for Prevention of Hoarseness After Upper Abdominal Surgery
Intraperitoneal Dexamethasone Spraying on Vagal Nerve-Rich Areas for Prevention of Hoarseness After Upper Abdominal Surgery: A Prospective Randomized Controlled Trial
The goal of this clinical trial is to evaluate whether intraoperative spraying of dexamethasone onto the abdominal vagal nerve-rich areas can prevent postoperative hoarseness in patients undergoing elective upper abdominal surgery. The main questions it aims to answer are:
- Does intraoperative topical dexamethasone spraying reduce the incidence of postoperative hoarseness after upper abdominal surgery?
- Does postoperative intravenous dexamethasone accelerate recovery in patients who develop hoarseness? Researchers will compare a dexamethasone group (intraoperative spraying of 10 mg dexamethasone in 10 mL normal saline) to a placebo group (intraoperative spraying of 10 mL normal saline alone) to see if dexamethasone reduces the rate of postoperative hoarseness.
Participants will:
- Undergo voice assessment (GRBAS scale) and voice recording before surgery and daily for 10 days after surgery.
- Be randomly assigned to receive either dexamethasone or placebo sprayed onto the surgical field at the end of the operation.
- If hoarseness develops in the placebo group, be randomly assigned again to receive either intravenous dexamethasone (5 mg daily for 3 days) or placebo.
Aperçu de l'étude
Statut
Statut
Les conditions
Les conditions
Intervention / Traitement
Intervention / Traitement
Description détaillée
The mechanism of postoperative hoarseness remains unclear. It is traditionally attributed to direct injury to the recurrent laryngeal nerve or to endotracheal intubation. However, the surgical field in upper abdominal procedures is remote from the recurrent laryngeal nerve, yet the incidence of hoarseness is higher than in many other surgeries. Preclinical animal experiments by the research group have demonstrated that electrical or thermal stimulation of the subdiaphragmatic vagal nerve can induce vocal cord paralysis, and that immediate topical spraying of dexamethasone onto the affected area significantly reduces this effect. It is hypothesized that thermal injury to vagal nerve fibers in the upper abdomen triggers aberrant signaling through the solitary nucleus to the nucleus ambiguus, ultimately resulting in dysfunction of the recurrent laryngeal nerve.
This trial is designed as a multi-center, prospective, randomized, double-blind, placebo-controlled study. A total of 584 adult patients scheduled for elective gastric, hepatobiliary, or pancreaticoduodenal surgery will be enrolled. At the end of the main surgical procedure and before abdominal closure, the surgeon will spray 10 mg of dexamethasone onto the vagal nerve-rich areas, such as the peritoneum around the esophageal hiatus, the lesser omental sac, and the surface of the hepatoduodenal ligament.
Voice assessments will be conducted daily from postoperative day 1 through day 10 using the GRBAS scale by a trained evaluator blinded to group assignment. Patients will also undergo voice acoustic recording for Praat analysis. Those in the placebo group who develop hoarseness will be re-randomized to receive either intravenous dexamethasone 5 mg or placebo daily for 3 days.
Type d'étude
Type d'étude
Inscription (Estimé)
Inscription
Phase
Phase
- N'est pas applicable
Contacts et emplacements
Coordonnées de l'étude
Coordonnées de l'étude
- Nom: KAIGE SHI
- Numéro de téléphone: +86-18259992395
- E-mail: shikg2001@163.com
Lieux d'étude
-
-
Fujian
-
Fuzhou, Fujian, Chine
- Recrutement
- Fujian Medical University Union Hospital
-
Contact:
- Shi
- Numéro de téléphone: +86-18259992395
- E-mail: shikg2001@163.com
-
Fuzhou, Fujian, Chine
- Pas encore de recrutement
- Mengchao Hepatobiliary Hospital of Fujian Medical University
-
Contact:
- Yan
- Numéro de téléphone: +86-18850377157
- E-mail: mcgdyyll@126.com
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Quanzhou, Fujian, Chine
- Pas encore de recrutement
- The Second Affiliated Hospital of Fujian Medical University
-
Contact:
- He
- Numéro de téléphone: +86-15905921859
- E-mail: 15905921859@163.com
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-
Jiangxi
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Nanchang, Jiangxi, Chine
- Pas encore de recrutement
- The First Affiliated Hospital of Nanchang University
-
Contact:
- Min
- Numéro de téléphone: +86-0791-88692748
- E-mail: candymin66@163.com
-
-
Critères de participation
Critère d'éligibilité
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Age 18 to 75 years, both sexes.
- Elective abdominal surgery (including gastric, hepatobiliary, and pancreaticoduodenal surgery) under general anesthesia.
- American Society of Anesthesiologists (ASA) physical status classification I-III.
- Preoperative GRBAS Grade (G) score = 0 (no hoarseness).
- Signed written informed consent.
Exclusion Criteria:
- Need for systemic glucocorticoid therapy during hospitalization for other reasons.
- Pre-existing hoarseness, vocal cord paralysis, or organic vocal cord lesions.
- History of neck surgery, neck radiotherapy, or laryngeal surgery.
- Known allergy to dexamethasone or other glucocorticoids.
- Active peptic ulcer or gastrointestinal bleeding within 6 months prior to enrollment.
- Uncontrolled diabetes mellitus or severe active infection.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: La prévention
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Double
Nombre de bras
Armes et Interventions
Groupe de participants / BrasGroupe de participants / Bras |
Intervention / TraitementIntervention / Traitement |
|---|---|
|
Expérimental: Dexamethasone Prophylaxis Group
At the end of surgery before abdominal closure, 10 mg dexamethasone diluted in 10 mL normal saline is sprayed onto the vagal nerve-rich areas: peritoneum around the esophageal hiatus, lesser omental sac, and surface of the hepatoduodenal ligament. Voice assessed daily (GRBAS scale + Praat recording) from postoperative day 1-10. |
Dexamethasone 10 mg diluted in 10 mL normal saline, sprayed topically onto the vagal nerve-rich areas (esophageal hiatus, lesser omental sac, hepatoduodenal ligament) once at the end of surgery before abdominal closure. |
|
Comparateur placebo: Placebo Control Group
At the end of surgery before abdominal closure, 10 mL normal saline alone is sprayed onto the same vagal nerve-rich areas. Voice assessed daily (GRBAS scale + Praat recording) from postoperative day 1-10. Patients who develop hoarseness (GRBAS Grade ≥2) are re-randomized to receive intravenous dexamethasone 5 mg or placebo daily for 3 days. |
10 mL normal saline sprayed topically onto the same vagal nerve-rich areas once at the end of surgery before abdominal closure. Patients in the placebo group who develop hoarseness (GRBAS Grade ≥ 2) will be re-randomized to receive intravenous dexamethasone 5 mg daily or placebo for 3 days. |
Que mesure l'étude ?
Principaux critères de jugement
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Incidence of postoperative hoarseness within 10 days
Délai: Postoperative day 1 to day 10.
|
The proportion of patients with a GRBAS (Grade, Roughness, Breathiness, Asthenia, Strain) Grade (G) score ≥ 2 at any time point from postoperative day 1 to day 10. |
Postoperative day 1 to day 10.
|
Mesures de résultats secondaires
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Time to recovery from hoarseness
Délai: From first diagnosis of hoarseness (GRBAS G ≥2) to recovery of voice (GRBAS G <2), assessed up to postoperative day 10.
|
From first diagnosis of hoarseness (GRBAS G ≥2) to recovery of voice (GRBAS G <2), assessed up to postoperative day 10.
|
|
|
Change in objective voice acoustic parameters measured by Praat software
Délai: Postoperative day 1 to day 10.
|
Voice samples are recorded using the same professional recording device with the participant producing a sustained vowel /a:/ for at least 5 seconds (sampling rate 44.1 kHz or 48 kHz, mono, WAV format). The recorded samples are analyzed using Praat software (University of Amsterdam) to extract the following parameters: Jitter (local, %), Fundamental Frequency (F0, Hz), and Harmonics-to-Noise Ratio (HNR, dB). The change in each parameter from baseline will be reported for each group. |
Postoperative day 1 to day 10.
|
|
Change in Grade, Roughness, Breathiness, Asthenia, and Strain (GRBAS) scale subscores over time
Délai: Postoperative day 1 to day 10.
|
The GRBAS (Grade, Roughness, Breathiness, Asthenia, Strain) scale is a perceptual voice assessment tool. For this study, only the Grade (G) subscore is measured. The G subscore assesses overall hoarseness severity on a 0-3 scale (0=normal, 1=mild, 2=moderate, 3=severe), with higher scores indicating worse voice quality. The G subscore is assessed daily from postoperative day 1 through day 10 and compared between groups to evaluate the trajectory of voice changes. The other four dimensions (R, B, A, S) are not formally scored in this study. |
Postoperative day 1 to day 10.
|
Collaborateurs et enquêteurs
Parrainer
Parrainer
Collaborateurs
Collaborateurs
Les enquêteurs
Les enquêteurs
- Chercheur principal: ZHONGMENG LAI, Fujian Medical University Union Hospital
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Début de l'étude
Achèvement primaire (Estimé)
Achèvement primaire
Achèvement de l'étude (Estimé)
Achèvement de l'étude
Dates d'inscription aux études
Première soumission
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Première publication
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour publiée
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Manifestations neurologiques
- Maladies du système nerveux
- Maladies des voies respiratoires
- Troubles respiratoires
- Maladies oto-rhino-laryngologiques
- Signes et symptômes respiratoires
- Maladies laryngées
- Troubles de la voix
- Conditions pathologiques, signes et symptômes
- Signes et symptômes
- Enrouement
- Composés polycycliques
- Produits chimiques inorganiques
- Composés de chlore
- Prégnades
- Grossesse
- Stéroïdes
- Composés à anneau fusionné
- Stéroïdes, fluorés
- Grossissement
- Composés de sodium
- Chlorures
- Acide chlorhydrique
- Dexaméthasone
- Chlorure de sodium
Autres numéros d'identification d'étude
Autres numéros d'identification d'étude
- 2026KY683-02
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Informations sur les médicaments et les dispositifs, documents d'étude
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