What are the disadvantages of skin puncture?

Although skin punctures may be more painful than a properly performed venipuncture, stabilizing the puncture site after the piercing the skin is less critical to the success of the procedure.

Skin Puncture or Venipuncture? Pros & Cons, Part 2.

Pros Cons
decreased risk of accidental needlestick potential for tissue fluid contamination
may take longer to complete

What are disadvantages of capillary puncture?

Disadvantages to capillary blood sampling include: Only a limited amount of blood can be drawn using this method. The procedure has some risks (see below). Capillary blood sampling may result in inaccurate results, such as falsely elevated sugar, electrolyte, and blood count values.

What are the complication of skin puncture?

Complications of cuts and puncture wounds
a wound infection. a blood infection, or sepsis. gangrene. an amputation.

What are the complications of skin puncture in phlebotomy?

Complications that can arise from venepuncture include haematoma forma- tion, nerve damage, pain, haemaconcentration, extra- vasation, iatrogenic anaemia, arterial puncture, pete- chiae, allergies, fear and phobia, infection, syncope and fainting, excessive bleeding, edema and thrombus.

What is the purpose of skin puncture?

Skin Puncture technique is used to obtain blood specimens when venipuncture or other collection methods are not appropriate. Blood specimens obtained by skin puncture are especially important in pediatrics, because small but adequate amounts of blood for laboratory tests can be obtained with this technique.

What are the disadvantages and advantages of skin puncture?

However, the pros and cons of performing a skin puncture bear no less consideration.
Skin Puncture or Venipuncture? Pros & Cons, Part 2.

Pros Cons
less likely to be contaminated by tissue fluid requires greater patient stability
less likely to be hemolyzed multiple venipunctures precipitate iatrogenic anemia
difficulty detecting nerve damage in infants

What are the advantages of dermal puncture?

The dermal puncture minimizes the amount of blood taken from the patient. This will be important to consider, especially with infants in an intensive care nursery. However, some laboratory tests require larger amounts of blood for testing; in these cases, capillary collection is not an option.

Does warming a site for skin puncture increased arterial blood flow?

Skin puncture blood is a mixture of undetermined proportions of blood from arterioles, venules, capillaries, and interstitial and intracellular fluids. The arterial portion can be increased by warming the site prior to collection. This increases the blood flow as much as sevenfold.

What should be done after puncturing the skin?

Prepare the skin puncture site.
Briskly rubbing the heel or finger tip will improve circulation. Cleanse the area with 70% alcohol pad. Care must be taken with small infants so as not to injure the delicate skin tissue.

What is the most common location for a skin puncture?

The distal end of the third or fourth finger is the most commonly used site. The very tip of the finger should not be punctured because there is a greater chance of puncturing bone as the bone is close to the skin surface.

What can cause problems in obtaining capillary blood samples?

17-7). Mistakes made in obtaining capillary blood include inadequate warming of the site, which results in inadequate arterialization of the blood; excessive squeezing, which causes contamination with venous blood or interstitial fluid; and exposure of blood to air during collection.

What are the advantages of pen like capillary puncture devices?

Terms in this set (4)

  • Capillary puncture is less invasive, quicker and generally less painful than venipuncture. Perception of Accuracy.
  • Accuracy/Precision of Test Results. Number of Tests Supported.
  • Immediate Results. Test Measurement Range.
  • Timeliness in Counseling. …

Why do we prefer skin puncture for the infants?

Obtaining blood by skin puncture instead of venipuncture can be especially important in pediatric patients in order to avoid the effects of blood volume reduction (2) and reduce the risk of anemia (3).

Why are the middle three fingers preferred for skin puncture?

The palmar surface of the fingertip (fleshy pad) of the middle (3) or ring (4) finger is usually selected for puncture for a variety of reasons. The fingertips of these fingers are usually less calloused, have fleshier pads and cause less discomfort for the patient.

Why thumb is not used for pricking?

The middle or ring finger is preferred as having the greatest depth of tissue beneath the skin and hence offering the least chances of injury. The thumb or index finger may be more likely to be calloused or scarred, as well as being much more sensitive, making the procedure more painful.

Can finger pricks get infected?

Traces of blood can remain in the end cap and may cause cross infection. This procedure may potentially transmit disease, particularly the virus infections hepatitis B, hepatitis C and HIV from contaminated equipment, gloves, hands or surfaces.

Can you get an infection from pricking your finger?

The finger prick can cause blood contamination of surfaces in contact with the lanced finger, especially door handles, risking infectious disease transmission, particularly if another person touching the contaminated door handle also has a punctured fingertip.