Brief focal ultrasound with topical anesthetic decreases the pain of intravenous placement in children.

Objective: To determine whether brief, focal pretreatment of children's skin with low-frequency ultrasound followed by a 5-minute application of a 4% lidocaine topical anesthetic decreases the pain of intravenous (IV) catheter placement.

Methods: A randomized, double-blind, placebo-controlled trial enrolling children 8 to 18 years of age undergoing IV placement as part of their care in a pediatric emergency department. Thirty-eight children received pretreatment followed by 5-minute application of a topical anesthetic.

Ultrasound with topical anesthetic rapidly decreases pain of intravenous cannulation.

Objectives: Physicians and nurses in the emergency department rarely use topical anesthesia when starting intravenous (IV) lines because of time constraints and lack of data on patients' perception of the pain associated with this procedure. Ultrasound pretreatment of skin increases permeation rates of hydrophobic topical medications, including topical lidocaine. The objective of this study was to demonstrate that ultrasound treatment followed by brief application of topical anesthetic decreases the patients' perception of the pain of IV cannulation.