Dermal Puncture Older Children and Adults Procedure

Question 1

Where should you puncture?

Answer 1

• Distal segment of the 3rd or 4th finger of the nondominant hand

Question 2

How is the puncture made?

Answer 2

Fleshly portion of the finger, to the side or center. Perpendicular to the lines of the fingerprint

Question 3

What is the first step after introducing yourself and identifying the patient and assembling the equipment?

Answer 3

Warm the site for a minimum of 3 minutes with a warm moistened towel or a warming device

Question 4

Why do you warm the site?

Answer 4

• Increase the blood flow up to 7 times.

Question 5

What is the name of the specimen collected?

Answer 5

• Arterialized Specimen b/c of arterial flow to the area

Question 6

What procedure is warming essential?

Answer 6

Collecting specimens for pH or blood gases

Question 7

What do you clean the site with?

Answer 7

• 70% isopropyl alcohol and allow to dry

Question 8

Why do you have to let the alcohol dry?

Answer 8

Alcohol residue can cause hemolysis of RBC’s and interfere with glucose testing

Question 9

Why is Povidone-iodine (Betadine) not used to clean the site?

Answer 9

Interferes with several tests like bilirubin, uric acid, phosphorous, and potassium

Question 10

What is the draw order for dermal capillary specimens?

Answer 10

• Lavender
• Green
• Red