The selection of a needle depends on several factors:
- Route of Administration: The type of injection (intramuscular, subcutaneous, intravenous) dictates the needle length and gauge. - Viscosity of the Medication: More viscous medications require needles with larger gauges. - Patient's Anatomy: Factors such as the patient's age, body mass, and muscle mass can influence needle choice. - Procedure Requirement: Specific procedures may require specialized needles, like spinal or biopsy needles.