A heel incision device is set to a maximum penetration depth of 2.0 mm (some facilities may require even shallower penetration for premature infants). Fingerstick devices may exceed this maximum depth of penetration that is allowed for an infant heel puncture.

What is the maximum depth for a heel puncture?

The heel puncture should be done on the most medial or lateral portions of the plantar surface of the heel, not on the posterior curvature, to avoid the calcaneous. The lancets are designed to enter no deeper than 2-3 mm. If using a scalpel blade, the blade should enter the skin no more than 2-3 mm.

When performing a heel stick the site should be punctured at what angle?

The incision can be placed at a 90º angle to the length of the foot or parallel to the length of the foot. Firmly and completely depress the trigger with your index finger. After triggering the lancet, remove the lancet and discard it into a biohazard sharps container.

What is the correct site for a infant heel puncture?

The heel of the foot is the preferred site for dermal puncture and capillary blood collection for infants less than 12 months old. CAUTION: In premature infants, the bone may be as close as 2.0 mm under the skin of the plantar surface of the heel.

What type of patient does heel puncture apply?

Heel – This site is used for infants, less than one year old, whose fingers are too tiny. The puncture is done on the farthest lateral or medial aspect of the plantar surface of the heel, not on the bottom.

What is the appropriate puncture site for newborns and infants?

The heel is the recommended site for collection of skin puncture specimens on infants less than 1 year old or not walking. However, it is important that the puncture be performed in an area of the heel where there is little risk of puncturing the bone. Skin punctures must not be performed on fingers of newborns.

For which blood tests is dermal puncture not recommended?

Capillary punctures are not suitable for blood culture testing and most coagulation tests. specific tests only. Refer to online test directory for each tests collection requirements. Capillary Specimens may be used immediately for point-of-care testing.

What is the ideal depth of the puncture?

The lancet must make a sufficiently deep puncture to ensure an adequate flow of blood. A penetration depth of 1.85 to 2.25 mm is recommended for adults, depending on the thickness of the skin. For children aged less than 8 years, the penetration depth should not exceed 1.5 mm.

What is the max depth of a lancet for an infant?

7.1. Lengths vary by manufacturer (from 0.85 mm for neonates up to 2.2 mm). In a finger-prick, the depth should not go beyond 2.4 mm, so a 2.2 mm lancet is the longest length typically used.

What is the current depth of the Gentleheel lancet used for infant heel sticks?

Cat. No.DescriptionIncision (depth/width)GHP4X250Preemie – lavender0.85mm/1.75mmGHN10X50Newborn – green1mm/2.5mmGHN5X200Newborn – green1mm/2.5mmGHN4X250Newborn – green1mm/2.5mm

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What is the difference between a heel stick and finger stick?

While fingers are the site of choice after infancy, heel sticks are appropriate for most babies, including premature infants, neonates, and even babies 4 to 7 months old. The only caveat is that babies discover other parts of their bodies, such as their feet and toes, as they grow older.

When collecting capillary blood from a newborn's heel how far from the puncture site should the tourniquet be applied?

Apply the tourniquet 3-4 inches above the selected puncture site. Do not place too tightly or leave on more than 2 minutes (and no more than a minute to avoid increasing risk for hemoconcentration). Wait 2 minutes before reapplying the tourniquet. The patient should make a fist without pumping the hand.

How is a heel stick done?

Heel stick: A simple procedure in which a newborn baby’s heel is pricked and then a small amount of the blood is collected, usually with a narrow-gauge (“capillary”) glass tube or a filter paper. The heel stick is now the most common way to draw newborn’s blood.

Why is it important to wipe away the first drop of blood?

The first drop of blood from a lancing site contains a greater volume of platelets, which could make the lancing site seal up before enough blood was obtained for the test, and the dual wipe ensured a longer, larger flow of blood.

What is the most acceptable puncture site for a 6 month old infant?

6 -12 months: lateral or medial planter surface of the heel is the preferred site, big toe or finger may be used Finger puncture capillary blood sampling is obtained from the lateral surface of finger near finger tip away from the nail bed. Puncture should occur across the fingertip, not parallel to it.

Which finger is most commonly used for pricking?

Prick your finger with the lancing device at the sides of the finger as there are less nerve ending here than at the tips or the ‘pads’. Recommended finger: the World Health Organisation recommends the middle or ring fingers are used for blood glucose tests (second and third fingers).

What happens if the bone is punctured in capillary puncture?

There is very little distance between the skin and the bone. Therefore, the bone could be easily pierced during the puncture, causing injury to the bone, infection, or gangrene.

What color tube is routinely used for hematology testing?

3. Lavender – Tube contains K2EDTA additive, used for hematology testing. a. Collected first to obtain adequate volume, minimize platelet clumping, and ensure accurate hematology test results.

What are the sites to be avoided in dermal puncture briefly discuss each?

The posterior heel and toe should be avoided as puncture sites because the distance between the skin surface and the bone in each case is only 2.33 or 2.19 mm, respectively, which means greater risk of bone damage (3, 13).

How long should the heel of a neonate be warmed prior to a heel stick?

Heel stick sampling If heel warming is desired, apply a heel warmer according to the manufacturer’s directions for approximately 5 minutes before performing the heel stick. (Some studies have found heel warming to offer no improvement in blood volume collected. )

Why should a dermal puncture not be performed on the heel of a 2 year old toddler?

A dermal puncture of the heel should only be performed on an infant or small child prior to the age of walking. The age limit for a heel puncture is approximately 12 months of age. After that time, the skin becomes very thick which could prevent the phlebotomist from obtaining a quality specimen for testing.

What is the typical depth of the dermal subcutaneous junction in babies?

The major blood vessels of the skin are located at the dermal-subcutaneous junction, which in the newborn’s heel is 0.35 to 1.6 mm beneath the skin surface.

What is heel stick screening?

The heel stick test for newborns is a quick prick on the heel of the baby using a lancet. This is the least traumatic way to draw blood from infants for routine testing. Heel stick is the most common and minimally invasive method to draw capillary blood from an infant for medical testing.

How many times can Lancet be used?

Officially, all lancets are single use. Though reusing is a fact of life, and many people do it. People often do it to save money, or if they are running out and won’t be able to buy more. Just like everything else, you need to be smart and do it in moderation.

Why is the depth of puncture should be 2 3 mm deep?

The recommended depth of incision is about 2 mm, anything deeper will present the risk of nerve or bone damage and should be avoided. For both finger and heel sticks, the first drop of blood produced should not be used and should be wiped away since it contains interstitial fluid which aids in the clotting process.

In what order should evacuated tubes be drawn?

Standard order of draw: BLOOD CULTURES, royal blue, red, light blue, SST (Gold), green, tan, yellow, pink, pearl, lavender. If a coag tube (light blue) is the only tube or the first tube to be drawn, a 5 mL discard tube must be drawn first.

How deep does a lancet puncture the skin quizlet?

A lancet is a small blade that can pierce 2 to 4 millimeters into the skin.

What is the universal newborn screening?

Universal newborn hearing screening is a way to identify hearing-impaired newborns with or without risk factors. Newborns with positive screening tests should be referred for definitive testing and intervention services.

Where should you draw blood from an infant younger than 6 months?

The neonatal heel prick, also known as a dermal puncture, is by far the most popular way to collect blood from newborns and infants up to about six months of age. Dermal punctures are preferable because, when done correctly, they are guaranteed to produce blood, removing the uncertainty of needle sticks.

Why use of either side of infant's heel and not the center of the heel?

Do not use the center portion of the heel, the arch of the foot, or toes other than the great toe as any of these sites may cause injury to nerves, tendons, and cartilage. Use only approved warming device.

What angle should a heel stick be performed?

Performing a Heel Stick Allow skin to air dry. With a gloved hand, place the BD Quikheel™ Lancet against the site with the Quikheel logo facing you. Place the blade slot area securely against the heel. The incision can be placed at a 90º angle to the length of the foot or parallel to the length of the foot.