The Importance of Needle Gauge for Pain During Injection of Local Anaesthetic

Norwegian University of Science and Technology

Status: Completed

Conditions: Needlestick Injuries

Treatments: Procedure: Large needle gauge lidocaine injection; Procedure: Small needle gauge lidocaine injection; Procedure: Normal needle gauge lidocaine injection

Study type: Interventional

Funder types: Other

Identifiers

NCT02107729

2013/2297B

Details and patient eligibility

About

This study will investigate the influence of needle gauge on pain during injection of local anaesthetic. Healthy volunteers will be recruited, who will each receive three injections with either 21G, 23G or 27G subcutaneously on the abdomen. After each injection, the participants will be asked to evaluate the pain on a Visual analog scale (0-100 mm). It is anticipated that the pain will decrease with decreasing thickness of the needle. The aim of this study is to find a simple method for pain reduction that can be used in clinical practice.

Enrollment: 36 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Age 18-65 years

Exclusion criteria

• Kidney, heart or liver disease
• Eczema or psoriasis on injection site
• Neuropathy
• Regular use of painkillers
• Hypersensitivity of Lidocaine
• Pregnancy
• Diabetes

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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36 participants in 3 patient groups

Needle gauge small

Experimental group

Description:

injection needle 23 G

Treatment:

Procedure: Small needle gauge lidocaine injection

Procedure: Large needle gauge lidocaine injection

Procedure: Normal needle gauge lidocaine injection

Needle gauge normal

Experimental group

Description:

injection needle 25 G

Treatment:

Procedure: Small needle gauge lidocaine injection

Procedure: Large needle gauge lidocaine injection

Procedure: Normal needle gauge lidocaine injection

Needle gauge large

Experimental group

Description:

injection needle 27 G

Treatment:

Procedure: Small needle gauge lidocaine injection

Procedure: Large needle gauge lidocaine injection

Procedure: Normal needle gauge lidocaine injection