A nurse is performing a home hazard assessment for a client who lives in an older home. The nurse should instruct the client to have the water tested for which of the following elements?
Magnesium
Potassium
Lead
Copper
The Correct Answer is C
Choice A reason: Magnesium is a naturally occurring mineral in water and is not typically associated with toxicity in household water supplies. While excessive magnesium can cause gastrointestinal upset, it is not considered a primary hazard in older homes. Testing for magnesium is not a standard safety recommendation.
Choice B reason: Potassium is also a naturally occurring mineral and is not a common contaminant of concern in household water. Potassium levels in water are generally safe and do not pose a significant health risk. Therefore, routine testing for potassium is unnecessary in the context of home hazard assessments.
Choice C reason: Lead is the correct answer because older homes often have plumbing systems that contain lead pipes, solder, or fixtures. Lead can leach into drinking water, especially if the water is acidic or has low mineral content. Chronic exposure to lead causes neurotoxicity, developmental delays in children, hypertension, and kidney damage. Testing for lead is a critical safety measure in older homes to prevent long-term health complications.
Choice D reason: Copper can leach into water from plumbing, but copper toxicity is rare and usually requires very high levels. While copper can cause gastrointestinal upset and liver damage in extreme cases, it is not the primary hazard associated with older homes. Lead remains the most significant concern.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: The ventrogluteal site is the safest and preferred site for intramuscular injections in adults. It has a thick muscle mass, fewer major nerves and blood vessels, and can accommodate larger volumes of medication. This makes it the correct answer.
Choice B reason: The dorsogluteal site is no longer recommended because of the risk of damaging the sciatic nerve and major blood vessels. It is considered unsafe compared to the ventrogluteal site.
Choice C reason: The vastus lateralis site is commonly used in infants and children because it is easily accessible and safe. In adults, it can be used but is less preferred for larger volumes compared to the ventrogluteal site.
Choice D reason: The rectus femoris site is rarely used because it is more painful and less safe due to proximity to nerves. It is not recommended for routine intramuscular injections.
Correct Answer is B
Explanation
Choice A reason: Ocular strabismus (crossed eyes) is not expected at 24 months. By this age, ocular alignment should be normal. Persistent strabismus beyond 6 months of age requires evaluation for possible vision problems.
Choice B reason: Slightly bowed legs are expected in toddlers due to normal physiologic development. This finding is common as children transition from crawling to walking and usually resolves by age 3 to 4 years. It is considered a normal variation at 24 months.
Choice C reason: Toddlers at 24 months should demonstrate an abdominal breathing pattern, not thoracic. Thoracic breathing is more characteristic of older children and adults. Therefore, this finding would not be expected.
Choice D reason: The anterior fontanelle typically closes between 12 and 18 months. At 24 months, it should already be closed. An anterior fontanelle less than 1 cm at this age would be abnormal and suggest delayed closure.
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