NCT07258953

Brief Summary

Intramuscular (IM) injections are one of the most frequently used pharmacological treatment methods in nursing practice. Reducing the pain experienced by patients during this procedure and ensuring patient satisfaction are important indicators of treatment quality. Reducing injection-related pain should be a priority in nursing care for both patient safety and the effectiveness of the treatment process. This study is a trpile-blind, randomized, controlled trial. It was designed to evaluate the effects of ShotBlocker, cold needle, and a combination of both methods during intramuscular injection on patient pain levels and satisfaction. The research will be conducted in the injection unit affiliated with the Adult Emergency Department of Konya City Hospital, Ministry of Health of the Republic of Turkey. The study population will consist of patients who presented for cyanocobalamin injections, and the sample will consist of 132 individuals who voluntarily agreed to participate in the study and met the inclusion criteria. Before conducting the study, ethical approval will be obtained from the Necmettin Erbakan University Health Sciences Ethics Committee and from the Konya City Hospital of the Ministry of Health of the Republic of Turkey. Collected data will be analyzed using the SPSS statistical package program (version 22.0; SPSS Inc., USA). The Kolmogorov-Smirnov test will be used to assess whether the data exhibit a normal distribution; statistical significance will be accepted as p\<0.05.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
132

participants targeted

Target at P75+ for not_applicable pain

Timeline
Completed

Started Jan 2026

Shorter than P25 for not_applicable pain

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

September 26, 2025

Completed
2 months until next milestone

First Posted

Study publicly available on registry

December 2, 2025

Completed
1 month until next milestone

Study Start

First participant enrolled

January 1, 2026

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2026

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

May 4, 2026

Completed
Last Updated

May 18, 2026

Status Verified

May 1, 2026

Enrollment Period

3 months

First QC Date

September 26, 2025

Last Update Submit

May 14, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Visual Pain Scale (VAS)

    After the injection, the pain level will be determined using VAS.The lowest VAS score is "0" and the highest is "10." A higher score indicates greater pain.

    up to 5 months

Secondary Outcomes (1)

  • Injection satisfaction

    up to 5 months

Study Arms (4)

ShotBlocker+cold needle

EXPERIMENTAL

During intramuscular injection, ShotBlocker and the cold needle will be used simultaneously.

Other: ShotBlocker+cold needle

Cold needle

EXPERIMENTAL

ShotBlocker will be used during intramuscular injection.

Other: ShotBlokcer

ShotBlocker

EXPERIMENTAL

A cold needle will be used during intramuscular injection.

Other: Cold needle

Control

PLACEBO COMPARATOR

Intramuscular injections will be performed according to standard technique.

Other: Control

Interventions

During intramuscular injection, ShotBlocker and the cold needle will be used simultaneously.

ShotBlocker+cold needle

A cold needle will be used during intramuscular injection.

ShotBlocker
ControlOTHER

Intramuscular injection will be conducted according to standard technique.

Control

ShotBlocker will be used during intramuscular injection.

Cold needle

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Must be between 18 and 65 years of age.
  • Must have no problems speaking and understanding Turkish.
  • Must have been prescribed 1000 mcg (1 ml ampoule) of cyanocobalamin IM injection.
  • Must use the deltoid region for the injection.
  • Must not be in the menstrual cycle.
  • Must not be pregnant.
  • Must have no history of diabetes.
  • Must have a Body Mass Index (BMI) between 18.5 and 30.
  • Must have no scars, incisions, lipodystrophy, or infection at the injection site.
  • Must have no history of allergy to the medication.
  • not using centrally or peripherally acting analgesics or sedatives,
  • not having limb impairments,
  • having a VAS score of "0" before the injection,
  • agreeing to participate in the study.

You may not qualify if:

  • Chronic or acute pain,
  • Receiving oral or parenteral analgesic treatment before the study,
  • Receiving another injection in the deltoid region,
  • Developing a drug-related allergy or other complication,
  • Having a contact-related infectious disease,
  • Participants wishing to withdraw from the study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Necmettin Erbakan University

Konya, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Pain

Condition Hierarchy (Ancestors)

Neurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Yadigar Yadigar

    Necmettin Erbakan University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Patients will be randomly assigned to groups and each will be taken individually to the injection unit. All injections will be administered by a single nurse working in the unit where the injections will be administered. The researcher will participate solely as an observer, will not intervene, and will not know which patient is in which group. Data obtained from the study will be coded as A, B, C, and D and submitted for statistical analysis. By concealing the group information, the analysis will be conducted objectively.
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Model Details: Group 1: ShotBlocker Group 2: Cold Needle Group 3: ShotBlocker + Cold Needle Group 4: Control
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

September 26, 2025

First Posted

December 2, 2025

Study Start

January 1, 2026

Primary Completion

April 1, 2026

Study Completion

May 4, 2026

Last Updated

May 18, 2026

Record last verified: 2026-05

Data Sharing

IPD Sharing
Will not share

Locations