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Trial registered on ANZCTR


Registration number
ACTRN12612000354886
Ethics application status
Approved
Date submitted
26/03/2012
Date registered
28/03/2012
Date last updated
1/08/2018
Type of registration
Prospectively registered

Titles & IDs
Public title
Benztropine for the relief of acute non-traumatic neck pain – a randomised trial
Scientific title
In patients presenting to the emergency department with acute non-traumatic neck pain, does benztropine compared to placebo relieve pain
Secondary ID [1] 280185 0
Nil
Universal Trial Number (UTN)
U1111-1129-4947
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Acute non-traumatic neck pain 286169 0
Condition category
Condition code
Musculoskeletal 286363 286363 0 0
Other muscular and skeletal disorders
Anaesthesiology 286380 286380 0 0
Pain management

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
a single dose of 2mg by intra-muscular injection (IM) of benztropine (volume of 2ml) will be administered.
Intervention code [1] 284553 0
Treatment: Drugs
Comparator / control treatment
2ml of IM normal saline
Control group
Placebo

Outcomes
Primary outcome [1] 286820 0
The mean change in pain scores will be compared between the two groups, as measured by the treating doctor using the verbal numeric rating scale. With the verbal numeric rating scale the patient will be asked to score their pain from 0 to 10 with 0 indicating no pain, and 10 indicating the worst pain imaginable.
Timepoint [1] 286820 0
Time 0 and at time 30 minutes after the injection
Secondary outcome [1] 296732 0
Range of neck motion in 4 directions in degrees: flexion, extension, rotation to left, rotation to right. Measurement will be done with a universal goniometer.
Timepoint [1] 296732 0
Time 0 and at time 30 minutes after the injection

Eligibility
Key inclusion criteria
-Non-traumatic neck pain of <24 hours duration
-Age 16-65
Minimum age
16 Years
Maximum age
65 Years
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
-Use of drugs known to cause dystonic reactions in the 24 hours prior to the onset of pain (eg metoclopramide (maxalon), prochlorperazine (stemetil), promethazine (phenergan), haloperidol)
-Clinical suspicion of a secondary cause for pain (eg neck-space infections, cervical osteomyelitis, discitis, epidural abscess, pathological cervical fractures, primary or secondary malignancies)
-Past history of cervical spine fracture
-Past history of chronic or recurrent neck pain
-Past history of cervical spine surgery
-Fever
-Focal neurological deficit
-Known allergy or adverse event to benztropine
-Anti-coagulant medication (eg warfarin or enoxaparin) or clopidogrel
-Known coagulation disorder (eg haemophilia) or platelet disorder (eg ITP, leukaemia, myelodysplastic disorder)
-Parkinsons disease
-Schizophrenia
-Pregnant women

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
The treating doctor will order the medication to be given by writing on a medication chart “benztropine or placebo 2ml IM. The medication chart will be given to the emergency department 'team co-ordinator'. Randomisation will then occur by opening sequentially numbered envelopes which are sealed and opaque in which the study allocation has been randomly assigned. These envelopes will be stored with the 'team co-ordinator'. Also, sealed inside will be a data collection sheet. The envelope will be opened by the ‘team co-ordinator’ who will then draw up the appropriate study drug. The team co-ordinator will then give the study drug to the nurse looking after the participant, and the data collection sheet to the doctor looking after the participant. The team co-ordinator will not divulge the contents of the syringe. Instructions in the envelope will re-enforce to the team co-ordinator not to divulge the contents of the syringe. While it would be ideal to have benztropine and saline in matching vials labelled A or B, funding constraints make this option unavailable. The team co-ordinator has been chosen as the person to draw up the study drug as they work in an area of ED physically distant from the clinic/consulting area where participants will be enrolled and treated. This means that the doctor, nurse and patient will be physically distant from the 'team co-ordinator' minimising the chance of accidental un-blinding. This method has been successfully used previously in this emergency department for a clinical trial.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
The randomisation sequence was computer generate utilising block randomisation methods to ensure balanced numbers in each group.
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s

The people assessing the outcomes
Intervention assignment
Parallel
Other design features
Phase
Phase 4
Type of endpoint/s
Efficacy
Statistical methods / analysis

Recruitment
Recruitment status
Completed
Date of first participant enrolment
Anticipated
Actual
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
Sample size
Target
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
NSW
Recruitment postcode(s) [1] 5155 0
2217

Funding & Sponsors
Funding source category [1] 284976 0
Self funded/Unfunded
Name [1] 284976 0
Country [1] 284976 0
Primary sponsor type
Hospital
Name
St George Hospital
Address
Gray St
Kogarah
NSW, 2217
Country
Australia
Secondary sponsor category [1] 283842 0
None
Name [1] 283842 0
Address [1] 283842 0
Country [1] 283842 0

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 286981 0
Northern Sydney Central Coast Area Health Service Human Research Ethics Committee (Harbour)
Ethics committee address [1] 286981 0
Ethics committee country [1] 286981 0
Australia
Date submitted for ethics approval [1] 286981 0
23/06/2011
Approval date [1] 286981 0
22/09/2011
Ethics approval number [1] 286981 0
HREC/11/HAWKE/145

Summary
Brief summary
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 33953 0
Dr Stephen Asha
Address 33953 0
Emergency Department, St George Hospital Gray St, Kogarah, NSW, 2217
Country 33953 0
Australia
Phone 33953 0
+61 2 9113 1650
Fax 33953 0
+61 2 9113 3946
Email 33953 0
stephen.asha@health.nsw.gov.au
Contact person for public queries
Name 17200 0
Dr Stephen Asha
Address 17200 0
Emergency Department, St George Hospital
Gray St, Kogarah, NSW, 2217
Country 17200 0
Australia
Phone 17200 0
+61 2 9113 1650
Fax 17200 0
+61 2 9113 3946
Email 17200 0
stephen.asha@health.nsw.gov.au
Contact person for scientific queries
Name 8128 0
Dr Stephen Asha
Address 8128 0
Emergency Department, St George Hospital
Gray St, Kogarah, NSW, 2217
Country 8128 0
Australia
Phone 8128 0
+61 2 9113 1650
Fax 8128 0
+61 2 9113 3946
Email 8128 0
stephen.asha@health.nsw.gov.au

No information has been provided regarding IPD availability


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

Documents added manually
No documents have been uploaded by study researchers.

Documents added automatically
SourceTitleYear of PublicationDOI
EmbaseBenztropine for the relief of acute non-traumatic neck pain (wry neck): A randomised trial.2015https://dx.doi.org/10.1136/emermed-2014-204317
N.B. These documents automatically identified may not have been verified by the study sponsor.