A phlebotomist is preparing to collect a capillary blood specimen from a patient using the aseptic technique. Which of the following cleansing agents should the phlebotomist use?
Povidone-iodine
Hand sanitizer
70% isopropyl alcohol
10% chlorine bleach solution
The Correct Answer is C
Choice A Reason:
Povidone-iodine is an antiseptic used for skin disinfection before and after surgery. It has a broad spectrum of antimicrobial activity, but it is not the preferred choice for capillary blood collection due to the potential interference with certain laboratory tests. Povidone-iodine needs to be completely dried to avoid hemolysis of the sample, which can affect test results.
Choice B Reason:
Hand sanitizer is generally used for hand hygiene and not for the disinfection of the site for blood specimen collection. While it is effective in killing germs on the skin, it contains emollients and gelling agents that can contaminate the blood sample and interfere with laboratory tests.
Choice C Reason:
70% isopropyl alcohol is the most commonly used disinfectant for aseptic technique in capillary blood collection. It is effective against a broad range of microorganisms and evaporates quickly, leaving no residue that could contaminate the sample. It is important to allow the alcohol to dry completely before performing the puncture to prevent stinging and sample dilution.
Choice D Reason:
A 10% chlorine bleach solution is not typically used for skin disinfection in blood collection due to its harshness and potential to cause skin irritation and damage. It is more commonly used for disinfecting surfaces and equipment in healthcare settings.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A Reason:
The supine position, where the patient lies flat on their back with the face upward, is the correct position for initiating CPR. This position allows for proper chest compressions and airway management, which are critical components of CPR.
Choice B Reason:
The Semi-Fowler's position, where the patient is partially sitting up with the head of the bed raised to 30-45 degrees, is not suitable for CPR. This position would make it difficult to perform effective chest compressions.
Choice C Reason:
The prone position, where the patient lies flat on their stomach, is not appropriate for CPR. Chest compressions cannot be effectively delivered in this position, and it would also complicate airway management.
Choice D Reason:
The side-lying position is not appropriate for CPR. While this position can be used for an unconscious patient who is breathing normally to maintain an open airway and prevent aspiration, it is not suitable for CPR, which requires the patient to be on their back.
Correct Answer is C
Explanation
Choice A Reason:
Signing a release for laboratory results is a form of expressed consent, not implied consent. Expressed consent is given explicitly, either orally or in writing, and is clearly and unmistakably communicated.
Choice B Reason:
Similarly, signing a document of agreement for a research study is another example of expressed consent. The patient is actively agreeing to participate in the study, which is a direct and informed action.
Choice C Reason:
Implied consent occurs when a patient's actions suggest consent without verbal or written confirmation. Offering an arm to a phlebotomist is a non-verbal communication that implies the patient is willing to have their blood drawn. This is a common practice in medical settings where the action of presenting an arm indicates readiness for the procedure.
Choice D Reason:
A family member nodding for a phlebotomist to proceed does not constitute the patient's implied consent. Consent must come directly from the patient unless they are unable to provide it, in which case a legal surrogate may give consent on their behalf.
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