Final answer:
A problem encountered with venipuncture using the butterfly method is the formation of a hematoma. It is important to assess the vein before starting the procedure and insert the needle correctly to avoid this complication.
Step-by-step explanation:
One problem encountered with venipuncture using the butterfly method is the formation of a hematoma. A hematoma is a localized collection of blood outside of the blood vessels, usually occurring due to puncture of a blood vessel during the procedure. This can happen if the needle penetrates the vein too deep or if the vein is fragile.
To avoid hematoma formation during venipuncture, it is important to properly assess the vein before starting the procedure. Look for visible veins that are straight and feel firm to the touch. Ensure that the needle is inserted at the correct angle and only goes a short distance into the vein. Applying pressure to the site after removing the needle can also help prevent the formation of a hematoma.
Keywords: venipuncture, butterfly method, hematoma