N3 Anatomy and Physiology (1st Sem AY 2022-2023)

VACCINE

SITES OF INJECTION

TARGETED MUSCLE

ORIGIN

INSERTION

ACTION

HOW TO LOCATE THE AREA?

Pneumococcal Conjugate Vaccine (PCV)

anterolateral thigh

*Take note that to prevent swelling and redness, these vaccines injected in different thighs of the infant, PCV in the right thigh and Penta for the left thigh.

Vastus lateralis muscle

Greater trochanter and linea aspera of femur

Patella via quadriceps tendon and then tibial tuberosity via patellar ligament

All four heads extend leg at knee joint; rectus femoris muscle acting alone also flexes thigh at hip joint.

To locate the area, start by finding where is the greater trochanter of the femur of the infant by using separate borders. The top border of the vastus lateralis muscle can be found a hand width below the groin, while its bottom border can be found a hand width above the knee. On the other hand, the side borders run from the mid anterior thigh to the mid-lateral thigh. From there, we can be able to have our ideal site for injection, as seen in the figure above.

Pentavalent Vaccine (Penta)

VACCINE

SITES OF INJECTION

TARGETED MUSCLE

ORIGIN

INSERTION

ACTION

HOW TO LOCATE THE AREA?

Influenza Vaccine

Upper arm

*Take note that the injection should be at the middle part of the deltoid muscle

Deltoid muscle

Acromial extremity of clavicle (anterior fibers), acromion of scapula (lateral fibers), and spine of scapula (posterior fibers).

Deltoid tuberosity of humerus

Lateral fibers abduct arm at shoulder joint; anterior fibers flex and medially rotate arm at shoulder joint; posterior fibers extend and laterally rotate arm at shoulder joint

Use the acromion process to find the location by feeling the bone at the top of your upper arm. After that, locate the acromion and descend roughly from top border to bottom border. Usually, the middle part of the deltoid muscle is shown by creating a square in the process, as seen in the figure above.

 Another way of locating the area is by using the triangle method wherein, you need to mark the area two fingers width below the acromion process. Then, that area will be marked as an upside-down triangle and the center of the upside-down triangle is where the injection should be placed.