chemicals agents or factors that cause physical defects in the developing embryo and are most harmful during organogenesis are
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Nursing Elites

ATI RN

RN Nursing Care of Children Online Practice 2019 A

1. Chemicals, agents, or factors that cause physical defects in the developing embryo and are most harmful during organogenesis are:

Correct answer: A

Rationale: Teratogens are substances that can cause congenital abnormalities, especially during the first trimester when organogenesis occurs. Choice A, Teratogens, is the correct answer as it specifically refers to substances that cause physical defects in the developing embryo. Choices B, Heterozygous, C, Inborn errors, and D, Multifactorial, are incorrect as they do not directly relate to substances that cause physical defects in embryos during organogenesis.

2. Which physiological acid-base balance complication would be most important for the nurse to assess in a patient with diarrhea?

Correct answer: D

Rationale: The correct answer is metabolic acidosis. Diarrhea can lead to the loss of bicarbonate, causing an imbalance in the acid-base status of the body, specifically resulting in metabolic acidosis. High serum pH (choice A) is incorrect as diarrhea-induced bicarbonate loss would lower pH, not increase it. Normal serum pH (choice B) is not the best answer as diarrhea can disrupt the acid-base balance. Metabolic alkalosis (choice C) is an alkaline state, which is less likely to be caused by diarrhea.

3. What is the best age to introduce solid food into an infant’s diet?

Correct answer: B

Rationale: The introduction of solid foods is recommended at 4 to 6 months when the infant's digestive system is more developed and ready for solids.

4. Which is usually the only symptom of pediculosis capitis (head lice)?

Correct answer: A

Rationale: Itching is typically the primary and most common symptom of pediculosis capitis due to the lice bites on the scalp.

5. At which age does an infant start to recognize familiar faces and objects, such as his or her own hand?

Correct answer: C

Rationale: By 3 months, infants begin to recognize familiar faces and objects, such as their own hands. This marks the early stages of visual recognition and cognitive development.

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