U.S., March 7 -- ClinicalTrials.gov registry received information related to the study (NCT07455305) titled 'The Effect of Simultaneous Versus Sequential Intramuscular Vaccine Injections on Pain Levels in Infants' on Feb. 25.
Brief Summary: This study was designed as a randomized controlled trial comparing simultaneous and sequential administration of intramuscular vaccines in infants.
Study Start Date: Sept. 01, 2021
Study Type: INTERVENTIONAL
Condition:
Injection Pain Prevention
Injection Pain
Intervention:
OTHER: Simultaneous injection
Two trained pediatric nurses administered the vaccines simultaneously into different thighs (vastus lateralis muscles) following a coordinated countdown.
OTHER: Sequential injection
A single nurs...