It is immunization day at the health center. The first patient is a 2-month old well female infant who is scheduled for the following vaccinations: pneumococcal conjugate vaccine (PCV), pentavalent vaccine (Penta) and oral polio vaccine. PCV and Penta are given via intramuscular route. Where are the sites of injection? What muscle is targeted in the injection? Write down its origin, insertion and action. How do you locate this area?
Sites of Injection: Vastus lateralis muscle in the anterolateral thigh
Origin: Intertrochanteric line, greater trochanter, gluteal tuberosity, linea aspera of femur
Insertion: Tibial tuberosity (via patellar ligament), patella, (lateral condyle of tibia)
Action: Extension of leg
How to locate area: The lateral femoral condyle and the greater trochanter are markers of the injection site. Vastus lateralis is situated roughly halfway between these two positions.
The baby’s 65-year-old grandfather also came to the center because influenza vaccine is being offered to senior citizens. The flu vaccine is given intramuscularly. Which muscle is the preferred site for IM injection in this case? Write down its origin, insertion and action. How do you locate this area?
Sites of injection:
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19 years old and above: Deltoid muscle
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Alternative: Vastus lateralis in the anterolateral thigh
Origin: Lateral 1/3 of Clavicle (clavicular part), Acromion (acromial part), Spine of Scapula (spinal part)
Insertion: Deltoid tuberosity of humerus
Action: Flexion and internal rotation of the arm
How to locate area: The bony tip at the end of the shoulder is called the acromion process. The injection site will be around 2 inches above the axillary fold/armpit and below the bone.