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CompletedNCT02608788Updated May 21, 2021

S.L. Spray Solution® and Difflam® and Acular®Spray for the Prevention of Postoperative Sore Throat

A Phase 4 interventional study of S.L.® and Difflam Forte ® in Sore Throat, sponsored by Chang Gung Memorial Hospital. Completed. Open to participants aged 20 Years to 85 Years. Per ClinicalTrials.gov, last updated 2021-05-21.

Sponsored by Chang Gung Memorial Hospital · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Enrollment
380
Allocation
Non-randomized
Ages
20 Years to 85 Years
Sex
All
01

Study summary

The purpose of intubation for patients under general anesthesia is to maintain their respiratory function. However, this procedure does cause a postoperative sore throat. Comfort of patients could be promoted if effective treatment could be found.

The specific aims of this project are:

  1. Comparing the Efficacies Between the Spray of S.L. Spray Solution and Difflam to Release Postoperative Sore Throat.
  2. Acular spray for the prevention of postoperative sore throat.
  3. Comparing the Efficacies Between the Spray of S.L. Spray Solution and Difflam and Acular to Release Postoperative Sore Throat.
Read the detailed description

This is a quasi-experimental study with purposive sampling. Patients were distributed into the four groups (1.5mg / ml Benzydamine hydrochloride, 3.0mg / ml Benzydamine hydrochloride, 5%Ketorolac Tromethamine) by the operative room. Research tools including pain scale (Numeric Rating Scale: 0-10), drugs and case data record sheet. Collected information was managed by SPSS for Windows (version 21.0) statistical software package. Both the descriptive and Inferential statistics were performed. Sample homogeneity among the four groups were verified by F-test and chi-square test. generalized estimating equation was selected to compare the throat pain in the four points of assessment.

The specific aims of this project are:

  1. Comparing the Efficacies Between the Spray of S.L. Spray Solution and Difflam to Release Postoperative Sore Throat.
  2. Acular spray for the prevention of postoperative sore throat.
  3. Comparing the Efficacies Between the Spray of S.L. Spray Solution and Difflam and Acular to Release Postoperative Sore Throat.
02

Conditions studied

  • Sore Throat

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Keywords

  • postoperative sore throat
  • American Society of Anesthesiologists status
  • general anesthesia
  • post-anesthesia care unit(PACU)
03

In context

Pharyngitis

252 studies on the registry are indexed under Pharyngitis; 36 are open to participants now.

This study's enrollment of 380 is above the median of 144 across 209 interventional studies indexed under Pharyngitis.

Browse Pharyngitis studies →

Lead sponsor

Chang Gung Memorial Hospital is the lead sponsor of 1,064 studies on the registry; 235 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. intubation for patients under general anesthesia
  2. age>20
  3. none pre-operative sore throat
  4. by the researchers explain research purposes, the researchers agreed to participate

Exclusion criteria

Exclusion Criteria:

  1. postoperative on N-G tube
  2. Surgical side is located by the mouth or throat
  3. thyroidectomy
  4. difficult airway
  5. none extubation at PACU
  6. on patient-controlled analgesia
  7. the medical records have a history of nonsteroidal antiinflammatory drugs allergy
  8. medical records have kidney disease or a history of renal dysfunction
  9. peptic ulcer
  10. pregnancy or lactation
05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
380 participants (actual)

Study arms

  • Active comparator
    S.L.® & Difflam Forte ®

    "1.5 mg/ml Benzydamine" , "S.L.® Spray Solution" 2.5 mg and "3.0 mg/ml Benzydamine" ,Difflam Forte ® 5.0 mg spray by mouth. Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Drug: S.L.®

  • Placebo comparator
    placebo ( for Acular® )

    placebo(distilled water)spray by mouth. Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Drug: placebo

  • Active comparator
    Acular® & S.L.®

    "5% Ketorolac Tromethamine" , "Acular®" 8.0 mg and "1.5 mg/ml Benzydamine" , "S.L.® Spray Solution" 2.5 mg spray by mouth. Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Drug: Acular®

  • Experimental
    Difflam Forte ® & Acular®

    "3.0 mg/ml Benzydamine" , "Difflam Forte ®" 5.0 mg and "5% Ketorolac Tromethamine" "Acular®" 8.0 mg spray by mouth. Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Drug: Difflam Forte ®

Interventions

  • DrugS.L.®

    "1.5mg/ml Benzydamine hydrochloride"," S.L.®" spray by mouth . Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Also known as: Andolex®

  • DrugDifflam Forte ®

    "3.0mg/ml Benzydamine hydrochloride" , " Difflam Forte ®" spray by mouth . Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Also known as: Tantum Verde®

  • DrugAcular®

    "5% Ketorolac Tromethamine" , " Acular® " spray by mouth . Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Also known as: Apo-Ketorolac® Ophthalmic

  • Drugplacebo

    Distilled water spray by mouth. Before intubation, each endotracheal tube cuff was scattered 10 times of spray by physicians that might cover 20 cm long of the cuff.

    Also known as: distilled water

06

What researchers measure

Primary outcomes

  1. pain scale (Numeric Rating Scale: 0-10)

    Time frame: 1.5 year

Secondary outcomes

  1. nonsteroidal antiinflammatory drug side effect

    Time frame: 1.5 year

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Hung NK, Wu CT, Chan SM, Lu CH, Huang YS, Yeh CC, Lee MS, Cherng CH. Effect on postoperative sore throat of spraying the endotracheal tube cuff with benzydamine hydrochloride, 10% lidocaine, and 2% lidocaine. Anesth Analg. 2010 Oct;111(4):882-6. doi: 10.1213/ANE.0b013e3181d4854e. Epub 2010 Mar 19. PubMed 20304980 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 21, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02608788
Lead sponsor
Chang Gung Memorial Hospital
Responsible party
Sponsor
First posted
Nov 20, 2015
Start date
Sep 2014
Primary completion
Jul 2015
Completion
Jul 2015
Last update
May 21, 2021

Study contacts

Hsiu-Ling Yang, RN, MS
principal investigator · Chang Gung Memorial Hospital

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Oct 2015. You cannot join it, but the record below documents what was studied.

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