Electronic Visual Analogue Scale in Acute Postoperative Pain

NCT01878903 | Completed

• 1 other identifier: UW-13-166
• Study Type: observational
• Target: 92
• Locations: 1 country
• Sites: 1

Brief Summary

When assessing acute post-operative pain, the validity, reproducibility and reliability of Visual Analogue Scale (VAS) and verbal Numerical Rating Scale (NRS) have been investigated extensively. The use of electronic version of VAS has been published in the recent 10 years yet publication related to its use in pain medicine were few. Jamison et al have shown good correlation between electronic VAS vs paper VAS on healthy volunteers using weight as the stimulus. In normal subjects as well as fibromyalgia patients, electronic form of VAS could be used to describe different levels of experimental heat stimulation. Long term study had been done where electronic pain diary were compared against paper diary in recording pain in 36 patients with chronic low back pain. The 2 scales showed good correlation. This author use a software that is Palm-top computer based. Following these few studies, validation study in chronic pain patient were published. A Palm-top computer based VAS was compared with paper NRS in 200 chronic pain patients. The pain level recorded by the two methods were considered equivalent by the author. However, Palm-top computer has almost disappeared from the market nowadays. Recent handheld electronic devices (iPad®) were incorporated with touch screen input interface which allow users to use their finger as the input device. To our knowledge, there is no published data concerning iPad-based VAS, especially in post-operative pain. We would like to compare the data obtained from electronic VAS on iPad with verbal numerical rating scale when acute post-operative pain is assessed. Hypothesis The null hypothesis is that the two pain measurement method do not correlate. The Spearman correlation coefficient between electronic VAS and verbal NRS will be reported.

Conditions

Post-operative Pain

Outcome Measures

Primary Outcomes (1)

• Postoperative Pain Scores

  The participants will be ask for pain scores (NRS and VRS with i-Pad) at postoperative day 1(the following day after the operation)

Study Arms (1)

i-pad VAS

All patients will be in one arm and they will be asked for post-operative pain using verbal NRS and visual VAS with i-pad

Other: Electronic VAS

Interventions

Electronic VAS OTHER

Post-opearive pain patients will be assessed using electional VAS and verbal NRS

Also known as: i-pad assessment

i-pad VAS

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

This study will be conducted at the population of Hong Kong.

You may not qualify if:

• Patients suffer from dementia, visual or hearing impairment will be excluded.

Sponsors & Collaborators

• Cheung Chi Wai: lead

Study Sites (1)

Deaprtment of Anaesthesiology, The University of Hong Kong

Hong Kong, China

Location

MeSH Terms

Conditions

Pain, Postoperative

Condition Hierarchy (Ancestors)

Postoperative Complications; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Pain; Neurologic Manifestations; Signs and Symptoms

Study Officials

• Chun Yin Wat, MBBS

  Department of Anaesthesiology, Queen Mary Hospital, Hong Kong

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: CASE ONLY
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Clinical Associate Professor

Study Record Dates

• First Submitted: April 1, 2013
• First Posted: June 17, 2013
• Study Start: April 1, 2013
• Primary Completion: August 1, 2013
• Study Completion: September 1, 2013
• Last Updated: January 22, 2014

Record last verified: 2014-01

Locations

CN (1)