Introduction: Laboratory tests are used to detect or monitor a condition or disease. It also helps the doctor to diagnose or evaluate the treatments. It usually involves the collection of blood, urine, or any blood tissues. All the tests have a standard normal range. The doctor will monitor whether the test results have fallen within the normal range. A clinical procedure is a set of procedures that have an intension of measuring, determining, or diagnosing a patient condition or parameter. The other kinds of procedures include therapeutic procedures like physical rehabilitation and surgical procedures.
Answer to Problem 1SRQ
Correct answer: “When drawing a blood alcohol specimen, it is acceptable to clean the arm with benzalkonium chloride.” Hence, the correct answer is option a.
Explanation of Solution
Reason for the correct answer:
A doctor orders a blood alcohol (ethanol; EtOH) test on a patient for certain medical reasons that are related to the treatment or other clinical purposes. While drawing a blood alcohol specimen, the arm of the patient is cleaned using benzalkonium chloride. This is because the antiseptics that are used to clean the venipuncture site should not contain any alcohol or other volatile organic substances. Thus, 70% isopropyl alcohol used for venipuncture site preparation or other alcohols like methanol and ethyl alcohol cannot be used for a BAC collection. Also, tincture of iodine comprises alcohol; thus, it also cannot be used to clean the venipuncture site.
Option a. is given as “benzalkonium chloride”.
The most frequently used antiseptic for EtOH specimen collection is aqueous benzalkonium chloride.
Hence, the correct answer is option a.
Reasons for incorrect answers:
Option b. is given as “isopropyl alcohol”.
The most frequently used antiseptic for EtOH specimen collection is aqueous benzalkonium chloride, not isopropyl alcohol.
Hence, option b. is incorrect.
Option c. is given as “methanol prep”.
The most frequently used antiseptic for EtOH specimen collection is aqueous benzalkonium chloride, not methanol prep.
Hence, option c. is incorrect.
Option d. is given as “tincture of iodine”.
The most frequently used antiseptic for EtOH specimen collection is aqueous benzalkonium chloride, not tincture of iodine.
Hence, option d. is incorrect.
Hence, options b., c., and d. are incorrect.
The most frequently used antiseptic for EtOH specimen collection is aqueous benzalkonium chloride.
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