Which of the following is caused by excessive shaking of a tube?
Hemophilia
Hemoconcentration
Hemolysis
Hemostasis
The Correct Answer is C
Choice A Reason:
Hemophilia is a genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding. This condition is not caused by shaking a blood collection tube; it is an inherited disorder typically caused by a mutation in one of the clotting factor genes.
Choice B Reason:
Hemoconcentration refers to an increase in the concentration of cells and solids in the blood, usually resulting from a loss of plasma. While this can occur due to various reasons, such as dehydration, it is not caused by shaking a blood collection tube. Shaking a tube does not change the ratio of cells to plasma in the blood.
Choice C Reason:
Hemolysis is the rupture of red blood cells, which can occur when a blood sample is handled roughly, such as by excessive shaking. This can cause the cells to break open and release their contents into the plasma, which can interfere with laboratory tests and lead to inaccurate results.
Choice D Reason:
Hemostasis is the process by which the body stops bleeding, which involves the clotting of blood. This process is not caused by shaking a blood collection tube. Hemostasis is a complex process that involves blood vessels, platelets, and clotting factors.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason:
The nondominant dorsal hand is not typically recommended for dermal specimen collection in toddlers due to the thinness of the skin and the proximity of bones and tendons, which increases the risk of injury.
Choice B reason:
The dominant lateral plantar heel is also not an ideal site for dermal specimen collection in toddlers. The heel is a common site for blood collection in neonates, but as children grow, the skin on the heel thickens, and the risk of hitting bone increases.
Choice C reason:
The nondominant third finger is the recommended site for dermal specimen collection in toddlers over one year of age. The palmar surface of the distal phalanx of the middle or ring finger provides a sufficient area for puncture while minimizing the risk of injury to underlying structures.
Choice D reason:
The dominant antecubital space is not a typical site for dermal specimen collection, especially in toddlers. This area is generally used for venipuncture due to the presence of larger veins suitable for this type of blood collection
Correct Answer is C
Explanation
Choice A reason:
A 16-gauge needle is quite large and is typically used for rapid fluid administration or blood donation in adults. It is not suitable for pediatric patients due to the size of their veins and the potential for causing trauma and discomfort.
Choice B reason:
An 18-gauge needle is also large and commonly used for adult patients in situations where larger volumes of blood are needed quickly. For a 6-year-old patient, this gauge would be too large and could cause significant pain and increase the risk of damaging the vein.
Choice C reason:
A 23-gauge needle is recommended for pediatric patients, including those who are 6 years old. It is small enough to minimize discomfort and the risk of injuring the vein, yet it allows for adequate blood flow for collection³. This size needle is often used with a winged infusion set, which is suitable for the smaller, more fragile veins of pediatric patients.
Choice D reason:
A 27-gauge needle is very small and is typically used for intradermal injections or for very small veins, such as those in neonates. While it would cause minimal discomfort, it may not provide an adequate flow rate for venipuncture in a 6-year-old patient.
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