A nurse is assisting with teaching a class on prenatal development. The nurse should instruct that advanced maternal age increases the risk for which of the following conditions?
Asthma
Spina bifida
Down syndrome
Facial malformation
The Correct Answer is C
Choice A reason : Asthma is a chronic condition characterized by respiratory symptoms such as wheezing, shortness of breath, and coughing due to airway inflammation and constriction. While genetic and environmental factors contribute to the development of asthma, there is no direct correlation between advanced maternal age and an increased risk of asthma in offspring. Asthma's etiology is multifactorial and more closely related to family history, exposure to allergens, and respiratory infections during early childhood.
Choice B reason : Spina bifida is a neural tube defect that occurs when the spine and spinal cord don't form properly. It's associated with factors such as folic acid deficiency during early pregnancy, certain medications, diabetes, and obesity. Although advanced maternal age may slightly increase the risk of chromosomal abnormalities, it is not considered a significant risk factor for spina bifida. Adequate intake of folic acid before conception and during early pregnancy is the most effective prevention strategy.
Choice C reason : Down syndrome is a genetic disorder caused by the presence of an extra copy of chromosome 21 (trisomy 21). The risk of conceiving a child with Down syndrome increases with maternal age, particularly after age 35. This is due to the higher likelihood of nondisjunction events during cell division in older eggs, leading to an abnormal number of chromosomes. Advanced maternal age is a well-established risk factor for Down syndrome, and prenatal screening is recommended to assess the risk.
Choice D reason : Facial malformations, such as cleft lip or palate, are congenital anomalies that can affect the appearance and function of a child's face. These conditions are influenced by genetic and environmental factors, including certain medications, nutritional deficiencies, and exposure to harmful substances during pregnancy. While advanced maternal age may contribute to an increased risk of chromosomal abnormalities, it is not specifically linked to an increased risk of isolated facial malformations.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason : Deep vein thrombosis (DVT) is a condition where a blood clot forms in a deep vein, usually in the legs. While certain factors like immobility, surgery, and certain medications can increase the risk of DVT, living in a crowded apartment building is not typically associated with an increased risk of developing this condition.
Choice B reason : Crowded living conditions can increase the risk of the spread of infectious diseases. This is due to the close proximity of individuals, which facilitates the transmission of pathogens through respiratory droplets, shared surfaces, and common areas. Diseases such as respiratory infections, meningococcal disease, rheumatic fever, and tuberculosis are particularly associated with crowded living conditions.
Choice C reason : Rheumatoid arthritis is an autoimmune disorder characterized by chronic inflammation of the joints. It is not directly linked to living conditions but can be influenced by genetic factors and possibly environmental triggers. However, there is no established connection between crowded living conditions and the development of rheumatoid arthritis.
Choice D reason : While weight gain can be influenced by a variety of factors including diet, exercise, and genetics, there is no direct correlation between living in a crowded apartment and weight gain. However, it's worth noting that socioeconomic factors and limited access to healthy food options or safe areas for physical activity, which can be associated with crowded living conditions, may indirectly contribute to weight gain.
Correct Answer is C
Explanation
Choice A reason : Increase in basal metabolic rate.During NREM sleep, particularly in the deeper stages, the basal metabolic rate (BMR) actually decreases. This reduction in BMR is part of the restorative processes that occur during sleep, conserving energy for the body to use in repair and growth.
Choice B reason : Reduced secretion of growth hormones.Contrary to this statement, the secretion of growth hormones increases during NREM sleep, particularly during the deep stages (stage N3). These hormones play a crucial role in tissue growth and muscle repair.
Choice C reason : Decrease in body temperature.During NREM sleep, there is a decrease in body temperature as part of the body's thermoregulation process. This helps to conserve energy and is a characteristic physiological change during this phase of sleep.
Choice D reason : Constriction of peripheral blood vessels.Peripheral blood vessels do not typically constrict during NREM sleep. Instead, there is generally a decrease in sympathetic nervous system activity, which can lead to the dilation of blood vessels and a decrease in blood pressure.
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