Blood Culture Collection: Safety Guidelines Quiz

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What is the purpose of using a safety transfer device when collecting blood for a blood culture?

To make it easier to determine if the organism is clinically significant
To destroy skin microbes and prevent interpretation of the organism as a pathogen
To prevent contamination and reduce exposure risk to staff (correct)
To increase the final concentration of the SPS in the blood culture bottle

Which of the following antiseptics is recommended by the CLSI for infants over 2 months old?

Alcohol wipes
Chlorhexidine gluconate (correct)
Tincture of iodine
Povidone/70% ethyl alcohol

What is the recommended diameter for the area covered by the chlorhexidine gluconate or tincture of iodine swab during the venipuncture site disinfection?

At least 3 x 3 inches
At least 1 x 1 inch
At least 2 x 2 inches
At least 2.5 x 2.5 inches (correct)

Why is proper antisepsis of the venipuncture site critical when collecting blood for a culture?

To make it easier to determine if the organism is clinically significant (D) Signup and view all the answers

When are blood cultures typically ordered?

Immediately before or during fever spikes when bacteria are more likely to be present (B) Signup and view all the answers

What is the recommended friction scrub time for the venipuncture site when collecting blood for a culture?

30-60 seconds (D) Signup and view all the answers

Why is glass preferred for blood alcohol specimen collection over plastic?

Glass tubes can maintain the sample integrity better than plastic tubes. (B) Signup and view all the answers

Why can't alcohol-based antiseptics be used for collecting blood alcohol specimens?

Alcohol-based antiseptics interfere with the blood alcohol test results. (B) Signup and view all the answers

What is the most common antiseptic used for blood alcohol specimen collection instead of alcohol-based ones?

Aqueous benzalkonium chloride (BZK) (D) Signup and view all the answers

What should be done once the glass gray-top sodium fluoride tube for blood alcohol collection is filled?

Stopper should not be removed. (A) Signup and view all the answers

Why must chain-of-custody procedures be followed in blood alcohol testing?

To ensure accurate identification of blood alcohol levels. (B) Signup and view all the answers

What is the primary purpose of performing a crossmatch between a patient's type and screen results and donor units?

To ensure compatibility between the patient's blood and the donor units (B) Signup and view all the answers

What is the main reason a blood sample may be rejected by the blood bank for special procedures?

All of the above (D) Signup and view all the answers

What is the purpose of performing blood cultures?

All of the above (D) Signup and view all the answers

What is the recommended specimen collection procedure for blood cultures?

Two to four blood culture sets (one aerobic and one anaerobic bottle per set) drawn 30-60 minutes apart (C) Signup and view all the answers

What is the primary purpose of an ABO and Rh grouping screen?

To ensure the patient has not developed any atypical antibodies (A) Signup and view all the answers

What is the main purpose of the crossmatch procedure between a patient's type and screen results and donor units?

To confirm compatibility between the patient's blood and the donor units (A) Signup and view all the answers