Dosage Calculations
Intramuscular (IM) Volume Limits
Standard guidelines for the maximum volume of medication that can be safely injected into specific muscle groups.
Volume Limits
- Deltoid: Max 1 mL.
- Vastus lateralis: Max 2–3 mL (adults).
- Ventrogluteal: Max 3 mL (preferred site for large volumes).
- Pediatric/Infants: Usually limited to 0.5 mL - 1 mL depending on muscle development.
Nursing Considerations
- If the calculated dose exceeds the site limit, split the dose between two sites.
- Assess muscle mass prior to injection.
- Use Z-track technique for irritating medications to prevent tissue damage.
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