The child is a 2-year-old who fell into a pool. He was retrieved from the pool by a family member but was not breathing. The family member started CPR, and the ambulance brought him to the hospital.
What factors are important in determining the level of hypoxemia that the child may have experienced during the submersion?
Select all that apply.
Temperature of water
The weight of the child
Oxygen concentration of the ambient air
Whether or not anyone witnessed the fall into the pool
The amount of time the child was submerged
Correct Answer : A,E
The level of hypoxemia that the child may have experienced during the submersion depends on several factors, but the most important ones are:
- The **temperature of water**: Cold water can induce a diving reflex, which lowers the heart rate and oxygen consumption, and may protect the brain from hypoxic injury¹². Cold water can also cause laryngospasm, which prevents water aspiration but also impairs gas exchange.
- The **amount of time the child was submerged**: The longer the submersion, the more severe the hypoxemia and the higher the risk of brain damage and death. The survival rate decreases significantly after 5 minutes of submersion³.
The other factors are less relevant or not directly related to the level of hypoxemia:
- The **weight of the child**: This may affect the buoyancy and the ability to float or swim, but not the oxygen consumption or gas exchange during submersion¹.
- The **oxygen concentration of the ambient air**: This may affect the pre-submersion oxygen saturation, but not the rate of oxygen depletion or gas exchange during submersion¹.
- The **witnessing of the fall into the pool**: This may affect the time to rescue and resuscitation, but not the level of hypoxemia during submersion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Explaining the examination and asking the client to sign the consent form is not within the PN's scope of practice. It is the responsibility of the healthcare provider performing the procedure to explain the risks, benefits, and alternatives of the exam and to obtain informed consent from the client.
B. Checking the medical record for the correct signed consent form prior to the examination is an essential role for the practical nurse. It ensures that informed consent has been obtained and documented before proceeding with any invasive procedure, aligning with the PN's responsibility to verify necessary documentation.
C. Explaining to a family member and obtaining their signature on the consent form may be appropriate only if the client is unable to provide consent and has a legal representative. However, obtaining consent and explaining the procedure is still the responsibility of the healthcare provider, not the PN.
D. Asking if the client understands the exam and why the consent form must be signed is part of the PN's role in ensuring that the client is informed, but the PN cannot assume responsibility for explaining the procedure in detail. This should be done by the healthcare provider who will perform the exam.
Correct Answer is ["0.75"]
Explanation
To calculate the amount of mL to administer, the PN should use the following formula:
mL = (mcg x 1 mg/1000 mcg) / (mg/mL)
Plugging in the given values, we get:
mL = (150 x 1/1000) / (0.2)
mL = 0.15 / 0.2
mL = 0.75
Therefore, the PN should administer 0.75 mL of octreotide subcutaneously.
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