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| Section | Objectives |
|---|---|
| Safety and Compliance | - Infection control and PPE usage - Needlestick prevention and biohazard disposal - OSHA standards and safety protocols |
| Professional Practice | - Communication and professionalism - Ethics and patient confidentiality (HIPAA) |
| Patient Preparation | - Patient identification and communication - Explaining procedures and obtaining consent - Site selection and preparation |
| Specimen Collection | - Capillary puncture procedures - Venipuncture techniques - Order of draw and tube handling |
| Specimen Processing and Handling | - Labeling and documentation - Quality control and rejection criteria - Specimen transport and storage |
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NEW QUESTION # 115
Which of the following is the maximum allowed time for a tourniquet application before possibly affecting test results?
Answer: B
Explanation:
The maximum recommended tourniquet application time before results may be affected is 60 seconds. A tourniquet is applied to increase venous filling and make the vein easier to locate and access, but prolonged application causes venous stasis and hemoconcentration. When blood remains trapped below the tourniquet too long, fluid shifts from the vascular space into surrounding tissue, concentrating cells, proteins, and protein-bound analytes. This can falsely elevate results such as potassium, calcium, proteins, and other chemistry values. It can also increase patient discomfort and make the collection more difficult. Thirty and forty-five seconds are acceptable but are not the maximum allowed time. Ninety seconds is too long and increases the risk of altered test values. Correct practice is to apply the tourniquet only long enough to select the site and establish blood flow, then release it promptly, especially before removing the needle. Reference topics: Routine Blood Collections; tourniquet application; hemoconcentration; venipuncture preanalytical variables.
NEW QUESTION # 116
A phlebotomist centrifuges a serum specimen before it has fully clotted. Which of the following is most likely to occur?
Answer: A
Explanation:
If a serum specimen is centrifuged before it has fully clotted, fibrin strands can form in the serum. These strands can interfere with testing instruments, cause sample aspiration problems, and lead to inaccurate results or specimen rejection. Serum specimens must be allowed to clot for the required time before centrifugation. Centrifugation does not increase specimen volume, neutralize additives, or sterilize blood. Blood specimens remain potentially infectious regardless of processing. This question tests the difference between serum and plasma. Serum is the liquid portion after clotting; plasma is the liquid portion of anticoagulated blood. If the phlebotomist rushes serum processing, the specimen may look separated but still contain fibrin. The correct workflow includes observing required clot time, balancing centrifuge tubes, using the correct speed and duration, and removing specimens promptly after centrifugation when required. Speed is not quality; specimen integrity is quality. Reference topics: Processing Specimens; clotting time; serum processing; centrifugation; fibrin formation.
NEW QUESTION # 117
A phlebotomist needs assistance in explaining a venipuncture procedure to a patient who speaks a different language than the phlebotomist. Which of the following people should the phlebotomist contact?
Answer: C
Explanation:
The phlebotomist should contact a medical interpreter. A patient who speaks a different language must receive clear, accurate information about the procedure, identification process, collection requirements, and consent in a language they understand. A qualified medical interpreter is trained to communicate healthcare information accurately while preserving confidentiality and minimizing misinterpretation. A charge nurse may help coordinate care but is not automatically qualified to interpret. A unit coordinator or office manager may assist administratively, but they are not the appropriate person to explain a clinical procedure in another language unless they are formally authorized and qualified as interpreters. Family members or untrained staff should not be used for medical interpretation when a qualified interpreter is available because errors can affect consent, safety, and patient rights. The phlebotomist should pause the procedure until communication is adequate, then explain the process, verify identity, confirm understanding, and obtain appropriate consent. Reference topics: Patient Preparation; communication barriers; medical interpretation; patient rights; informed/expressed/implied consent; cultural competence.
NEW QUESTION # 118
Which of the following angles should a phlebotomist use when inserting a butterfly needle into a patient's dorsal hand veins?
Answer: C
Explanation:
A butterfly needle inserted into dorsal hand veins should be introduced at a shallow angle, and from the options provided, 10° is the best answer. Hand veins are usually superficial, smaller, and more mobile than antecubital veins, so a steep angle increases the risk of passing through the vein, causing infiltration, hematoma formation, pain, or failed collection. A winged infusion set gives better control for fragile or difficult veins, but the phlebotomist must still anchor the vein, insert bevel up, and keep the angle low. A 25° or 30° angle is more consistent with routine antecubital venipuncture rather than shallow hand-vein access. A 45° angle is excessive for venous collection and creates unnecessary tissue trauma. The NHA CPT test plan places this under routine blood collection skills, including equipment selection, winged collection sets, hand vascular anatomy, site selection, and angle of needle insertion and withdrawal. Reference topics: Routine Blood Collections; winged collection set; hand veins; angle of needle insertion.
NEW QUESTION # 119
Which of the following laboratory departments performs a CBC and ESR?
Answer: D
Explanation:
CBC and ESR testing are performed in the hematology department. A complete blood count evaluates formed elements of blood, including red blood cells, white blood cells, hemoglobin, hematocrit, platelet count, and sometimes differential cell counts. ESR, or erythrocyte sedimentation rate, is also a hematology procedure because it measures the rate at which red blood cells settle in anticoagulated blood over a defined time. Chemistry handles serum or plasma analytes such as glucose, electrolytes, enzymes, renal markers, liver markers, and metabolic panels. Serology focuses on immune reactions, antibodies, antigens, and infectious or immunologic testing. Microbiology deals with organisms, cultures, stains, and susceptibility testing. Knowing laboratory departments helps the phlebotomist route specimens correctly, answer workflow questions accurately, and understand tube selection and specimen handling requirements. For CBC and ESR, anticoagulated whole blood is typically required, commonly collected in lavender-top EDTA tubes depending on the laboratory's procedure. NHA CPT competencies include laboratory departments, blood components, specimen processing, specimen transport, and communication of laboratory information. Reference topics: Processing Specimens; hematology department; CBC; ESR; specimen routing.
NEW QUESTION # 120
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