lies halfway between the two landmarks; the vein lies 0.5 to cm medially ( Fig 130.4B ) The empty space between flexor and extensor muscles of the medial thigh will also reveal the location of the vessels Alternatively, ultrasound can be used to identify the vessels Cleanse the femoral triangle circumferentially with antiseptic solution several times and allow to dry With the palpating index finger, relocate the femoral artery approximately cm below the inguinal ligament Use the palm of this hand to control the movement of the child’s leg If possible, minimize the infant’s agitation and movement which make the abdominal musculature taut and the transmitted pulse difficult to palpate