About this trial
Diphenhydramine, when injected locally, has been shown to achieve a certain level of local anesthesia. It has been documented for use in simple bedside procedures, however there is a gap in knowledge in its comparison to lidocaine. The purpose of the study is to determine if local infiltration of diphenhydramine is noninferior to the use of lidocaine 1% when trying to achieve local anesthesia for simple laceration repair. Patients who present to the emergency department with a simple laceration will be enrolled in the study. Patients will be evaluated for the pain of the injection as well as the pain of the laceration repair procedure post injection.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Lacerations requiring one layer of sutures
Lacerations appropriate for repair by emergency physicians
Disqualifiers
Active bleeding from laceration
Complex lacerations requiring multiple layers
Lacerations to be repaired by a specialist service
Patients with allergies to either diphenhydramine or lidocaine
Trial design
Parallel
Treatments tested in this trial
Lidocaine
DrugLidocaine local infiltration
Diphenhydramine
DrugDiphenhydramine local infiltration
Treatment groups
Trial outcomes
Primary outcomes
Sensation reduction
Participants will rate their sensation level on a visual analog scale from 0 to 10 both before the drug injection and after the laceration repair procedure. 0 indicating no sensation and 10 indicating worst sensation. Reduction in sensation will be calculated as the difference between the pre-injection and post-procedure sensation, with a larger number indicating a greater reduction in sensation.
Secondary outcomes
Anesthesia satisfaction by patient
Patient satisfaction of anesthesia yes/no
Anesthesia satisfaction by physician
Physician satisfaction of anesthesia yes/no
Sponsors and contacts
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Florida Atlantic University
Lead sponsor
Baptist Health South Florida
Collaborator