Correct Answer: C

Rationale: The nurse does not need to determine the age of Excel when planning for Sonny's oxygen therapy. This information is irrelevant to the specific care requirements of Sonny's oxygen therapy. Sonny's age, medical history, respiratory status, and oxygen needs are the key considerations in planning for his oxygen therapy. The nurse should focus on factors such as the need for a humidifier, length of tubing, and the manner of administering oxygen (continuous or intermittent) to ensure effective and safe delivery of oxygen therapy to Sonny.

Correct Answer: B

Rationale: Attrition is the dental condition characterized by the abnormal wearing away of tooth structure due to factors such as bruxism (grinding or clenching of teeth) or acidic erosion. Bruxism can cause tooth-to-tooth contact that leads to the wearing down of the tooth enamel and eventually can affect deeper layers of the tooth. Acidic erosion, on the other hand, is caused by the direct contact of teeth with acidic substances, which can lead to the gradual loss of tooth structure over time. Dental caries refers to tooth decay caused by bacteria, abrasion involves wearing away of tooth structure due to external factors like improper brushing habits, and erosion specifically relates to the loss of tooth structure caused by acidic substances.

Correct Answer: B

Rationale: Uterine atony is caused by the markedly distended uterus and intermittent uterine contractions within 2 to 3 days after birth. It is characterized by the inability of the uterus to contract after delivery, leading to excessive bleeding postpartum. This condition is a significant risk factor for postpartum hemorrhage. Treatment may involve massage of the uterus, administration of uterotonics, and in severe cases, surgical interventions such as a hysterectomy. Retained placenta refers to incomplete expulsion of the placenta after delivery. Afterpains are the discomfort felt by some women as their uterus contracts and returns to its normal size after childbirth. A boggy uterus is another term for a uterus that feels soft, lax, or lack firm tone, which can be a sign of uterine atony.

Correct Answer: C

Rationale: Children with ADHD often display hyperactive and impulsive behaviors, such as excessive running, climbing, and fidgeting. These behaviors are characteristic symptoms of the hyperactive-impulsive subtype of ADHD. Children with ADHD may struggle to sit still, have difficulty engaging in quiet activities, and often seem on the go. Therefore, the nurse would expect to see signs of excessive movement and restlessness in a child with ADHD.

Correct Answer: C

Rationale: When Nurse Maris is estimating the proportion of the population affected by the problem, she is assessing the magnitude of the problem. The magnitude criterion involves determining the extent of the issue within the community, such as the number of individuals affected or at risk. By understanding the magnitude of a health problem, nurses can better prioritize their efforts to address the most pressing issues that affect a large portion of the population. This criterion helps in identifying which health problems have the highest impact and require immediate attention in order to improve community health outcomes.