Variability in Thermal Thresholds in Patients With Persistent Pain After Open Inguinal Herniotomy

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01768130

Enrollment

Registered

2013-01-15

Start date

2011-04-30

Completion date

2013-10-31

Last updated

2014-02-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Persistent Pain After Open Inguinal Herniotomy

Brief summary

The study will investigate the test-retest variability of thermal thresholds in patients with persistent pain after open inguinal herniotomy. Sensory mapping with a cool metal roller delineated an area with cool sensory dysfunction on the painful site. In this area and in a contralateral area as a control, 5 sites were outlined, including the point of maximum pain. In these total 10 sites warmth detection threshold (WDT), cool detection threshold (CDT) and heat pain threshold (HPT) were assessed using quantitative sensory testing. Tests were repeated after a 4-6 weeks interval.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Healthy volunteers

Inclusion criteria

* Patients with persistent pain after open inguinal herniotomy * Age \> 18 years

Exclusion criteria

* Cognitive impairment * Drug or alcohol abuse * Bilateral inguinal hernia operation * Nerve injury from other causes

Design outcomes

Primary

Measure	Time frame	Description
Test- retest variability of thermal thresholds.	At baseline and retest 4-6 weeks later	Analysis of agreement (Bland-Altman) and reliability (intraclass correlation coefficients) of thermal threshold test- retest data assessed at baseline and after 4-6 weeks.

Countries

Denmark

Outcome results