ABSTRACT
BACKGROUND: The pain elicited by administering immunizations can be a significant cause of anxiety and fear in many patients. This apprehension can be one reason a person may decline immunizations and can impair the clinician's ability to perform an examination. This project uses a mechanical device, ShotBlocker®, to apply local pressure to an injection site at the time of needle penetration, thereby stimulating afferent fibers to reduce pain sensation.
METHODS: Ninety nine patients were randomized to receive immunization with or without the device. Data was collected on the patient's perception of pain during immunization, type of vaccine, location of the injection, and the age and sex of the patient. Patients were excluded if they were less than five years of age or if they were unable to comprehend the consent form or pain scale.
RESULTS: Ninety nine patients gave consent and provided the required information.
The influenza vaccine was the most common injection seen in both groups. The average pain rating was significantly lower in the group that received injections utilizing the device.
CONCLUSIONS: The use of the device, ShotBlocker®, at time of injection significantly reduced pain and discomfort associated with routine immunization. This may help relieve anxiety and fear of injections.
*This research study has been submitted for publication by Todd Gundrum, Pharm.D., Christopher Sherman, M.D. and Scott Ruhlman. Family Physicians Association of Flower Hospital