Pediatrics NUR 335 Exam Questions

Correct Answer: b) By calculating the Cobb angle from X-ray findings

The Cobb angle is used to quantify the severity of idiopathic scoliosis. It is measured based on X-ray images by drawing lines along the most tilted vertebrae, and the angle formed by these lines is used to determine the degree of curvature. This is a standardized and objective method to assess the severity of scoliosis.

Why Other Options are Wrong:

a) By measuring the degree of spinal flexibility:

This is incorrect. Spinal flexibility is not a primary method for quantifying scoliosis severity. The Cobb angle is the standard measurement.

c) By assessing the curvature's impact on daily activities:

This is incorrect. While the impact on daily activities may influence treatment decisions, the severity of scoliosis is primarily quantified by the Cobb angle from X-ray findings.

d) By determining the patient's age at diagnosis:

This is incorrect. Age at diagnosis can influence treatment decisions, but the severity of scoliosis is determined by the Cobb angle, not age.

Summary:

The severity of idiopathic scoliosis is primarily quantified using the Cobb angle, which is calculated based on X-ray findings. This method provides an objective measurement of the curvature of the spine, guiding treatment decisions.

Correct Answer: c) Colic generally begins within the first month of life, peaks at about 6 weeks, and ends by age 3 to 4 months.

Colic typically begins within the first month of life, peaks at around 6 weeks, and usually resolves by the time the infant reaches 3 to 4 months of age. It is characterized by frequent and prolonged crying with no apparent cause, affecting an otherwise healthy infant.

Why Other Options are Wrong:

a) Colic typically begins at age 6 weeks and lasts until 1 year of age:

Colic does not typically begin at 6 weeks, but rather within the first month of life. It also resolves by the age of 3 to 4 months, not lasting up to 1 year.

b) The exact cause of colic is known, and it is related to gastrointestinal issues:

The exact cause of colic is unknown. Although the term suggests an intestinal origin, no clear gastrointestinal cause has been identified.

d) Colic is associated with significant growth and weight gain delays in infants:

Despite the excessive crying, colicky infants usually eat and gain weight well. Colic is not associated with growth or weight gain delays.

Summary:

Colic in infants is a common condition that causes frequent and prolonged crying, typically occurring within the first month of life. It peaks at around 6 weeks and typically resolves by 3 to 4 months. Although the exact cause is unknown, it is not linked to growth or weight gain issues. The other options either misrepresent the timing or causes of colic, or incorrectly associate it with growth delays.

Correct Answer: B. A high-calorie diet.

Cystic fibrosis (CF) is a genetic disorder that affects multiple organs, primarily the lungs and digestive system.

In CF, the body has difficulty absorbing nutrients due to pancreatic insufficiency (the pancreas does not produce enough enzymes), which leads to poor digestion and malnutrition.

As a result, patients with CF often require a high-calorie diet to meet their increased energy needs, support growth, and maintain adequate weight. Additionally, high-fat and high-protein foods are typically recommended to compensate for nutrient malabsorption.

Why the Other Options are Incorrect:

A. A low-fat diet: A low-fat diet is not recommended for CF patients because fat is an important source of calories. Due to the malabsorption of fats, CF patients need higher amounts of dietary fat to ensure they receive adequate calories and nutrients.

C. Avoidance of breastfeeding in babies with cystic fibrosis: Breastfeeding is highly recommended for babies with cystic fibrosis. Breast milk provides essential nutrients, immune support, and benefits to infants with CF, helping to improve overall health and immunity. In fact, breastfeeding is encouraged in CF patients, and specialized CF nutrition plans can be introduced as needed.

D. A low-protein diet: A low-protein diet is not recommended for CF patients. They require sufficient protein to support growth, muscle mass, and overall health. Protein is crucial for tissue repair, immune function, and other body processes, which are particularly important in the context of CF.

Summary:

For patients with cystic fibrosis, a high-calorie diet (B) is recommended to compensate for the malabsorption of nutrients and to support growth and energy needs. A high-fat and high-protein diet is also necessary to meet nutritional requirements. Breastfeeding is encouraged, and low-fat or low-protein diets are not appropriate for CF patients.

Correct Answer: A) Cephalhematoma

Cephalhematoma, a localized collection of blood between the skull and periosteum, can result in the breakdown of red blood cells as the blood clot resolves, leading to jaundice due to the release of bilirubin. This is an example of localized hemolysis.

Why Other Options are Wrong:

B) Neonatal sepsis:

Sepsis can cause jaundice, but it is more commonly related to liver dysfunction rather than hemolysis.

C) Breastfeeding jaundice:

This condition occurs due to insufficient intake leading to delayed bilirubin clearance rather than hemolysis.

D) Meconium aspiration syndrome:

This primarily affects respiratory function and does not directly cause hemolysis leading to jaundice.

Summary:

Jaundice in neonates can be caused by hemolysis from either systemic factors (like Rh incompatibility) or localized factors (like cephalhematomas). Understanding the different causes of neonatal jaundice is crucial for appropriate management and prevention of complications such as kernicterus.

Correct Answer c: Speech and language acquisition

When addressing the overall development of a 6-month-old infant with a cleft palate, speech and language acquisition should be a primary consideration. This is because a cleft palate can interfere with the normal development of speech and language due to structural abnormalities in the mouth that affect the ability to form sounds properly. Early intervention, including working with a speech-language pathologist, is essential for promoting normal speech and language development. At 6 months of age, the infant is at a stage where they are beginning to experiment with sounds and babbling. If the cleft palate is not addressed appropriately, it can lead to speech delays or difficulties in producing certain sounds as they grow older.

Why Other Options are Wrong:

Gross motor skill development:

While gross motor development is important, it is not directly impacted by a cleft palate. At 6 months, infants typically begin rolling over, sitting up with support, and reaching for objects. These milestones are more related to physical and neurological development rather than being affected by a cleft palate.

Fine motor skill development:

Fine motor skills, such as grasping objects and bringing them to the mouth, may be developing around 6 months. However, a cleft palate typically does not affect the development of fine motor skills. These skills develop separately from the speech and feeding challenges posed by a cleft palate.

Cognitive development:

Cognitive development is another critical aspect of growth, but a cleft palate does not directly interfere with cognitive abilities. However, challenges with feeding, speech, and social interaction could indirectly affect cognitive development due to potential delays in communication and social interaction.

Summary:

When planning care for a 6-month-old infant with a cleft palate, speech and language acquisition is a primary concern. The nurse should focus on early interventions, including engaging with specialists like speech-language pathologists, to help the infant develop appropriate speech and communication skills.

Correct Answer: B) Botulinum toxin

Botulinum toxin (commonly known as Botox) is a treatment used to decrease spasticity in specific muscles by blocking the release of acetylcholine at the neuromuscular junction. This helps reduce excessive muscle contraction and can decrease the uneven pull on joints that leads to contractures. It is effective in managing localized spasticity, and when combined with other treatments such as physical therapy, it can help in preventing or managing contractures.

Why Other Options are Wrong

A) Benzodiazepines:

Incorrect. Benzodiazepines, such as diazepam, are sometimes used to help with muscle relaxation and spasticity in CP, but they are not the most effective treatment for preventing or managing joint contractures. Benzodiazepines primarily help with muscle relaxation and can provide short-term relief but are not specifically targeted at reducing uneven muscle pull or preventing fixed contractures.

C) Bracing:

Incorrect. Bracing is a treatment used to provide stability and support to joints and limbs, which can be important for managing spasticity and improving function in CP. However, while bracing can help with positioning and reduce the risk of joint deformities, it does not directly reduce muscle spasticity or prevent contractures in the same way that botulinum toxin does.

D) Physical therapy:

Incorrect. Physical therapy is an essential part of the treatment for cerebral palsy and plays a critical role in maintaining joint mobility, improving strength, and preventing contractures. While physical therapy is a fundamental part of managing CP, it is often used in combination with other treatments, such as botulinum toxin or bracing, to help prevent contractures. However, physical therapy alone does not directly target the reduction of spasticity or uneven muscle pull at joints in the way that botulinum toxin can.

Summary:

The most effective treatment for decreasing the muscles' uneven pull at joints and preventing fixed contractures in cerebral palsy is botulinum toxin (Botox). It works by reducing muscle spasticity and preventing the development of contractures. While physical therapy and bracing are important components of the management plan, botulinum toxin directly targets the underlying muscle spasticity that causes joint deformities.

Correct Answer: A) Under 5 years

A) Under 5 years (Correct):

Wilms tumor most commonly affects children under the age of 5 years, with the peak incidence around 3 to 4 years of age. It is rare in older children or adults.

B) Ages 6 to 9 years (Incorrect):

While Wilms tumor can occur in children up to 9 years, it is not the most common age group for diagnosis. Most cases occur in younger children.

C) Ages 10 to 13 years (Incorrect):

Wilms tumor is much less common in this age range. It is typically diagnosed much earlier, with the peak incidence being before 5 years of age.

D) Ages 14 to 17 years (Incorrect):

Wilms tumor is very rare in adolescents and adults. It is generally diagnosed before the age of 5, making it highly unlikely in this age group.

Summary:

Wilms tumor most commonly affects children under 5 years old, with a peak incidence between 3 and 4 years of age. It is rare in older children or adolescents, making the other options incorrect. Early detection and treatment are crucial for a favorable prognosis, as Wilms tumor is treatable when diagnosed at an early stage.

Correct Answer: B. Follicle-stimulating hormone (FSH).

FSH plays a key role in regulating the function of the ovaries and testes. When there is gonadal failure, whether primary (e.g., due to ovarian or testicular dysfunction) or secondary (due to a pituitary or hypothalamic issue), the body often compensates by producing elevated levels of FSH.

This is because the lack of normal gonadal hormone production (such as estradiol or testosterone) leads the pituitary to secrete more FSH in an attempt to stimulate the gonads.

A. Estradiol:

Estradiol is an important estrogen produced by the ovaries. It is a useful marker for assessing ovarian function but is not as directly reflective of gonadal failure as FSH. Low estradiol can suggest ovarian insufficiency, but FSH is more definitive in diagnosing gonadal failure.

C. Luteinizing hormone (LH):

LH is also involved in gonadal function, especially in regulating the menstrual cycle in women. It works in concert with FSH, but FSH is considered the more sensitive and reliable marker for diagnosing gonadal failure, as it often rises earlier in the process of gonadal dysfunction.

D. Testosterone:

Testosterone is crucial in males for normal gonadal function. Low testosterone levels can suggest gonadal failure in males, but like estradiol, it is not as definitive as FSH for diagnosing gonadal failure.

Summary:

FSH is the most helpful hormone to measure when establishing evidence of gonadal failure because elevated levels indicate a lack of gonadal function and hormonal production. The pituitary compensates by increasing FSH production in an attempt to stimulate the gonads.

The correct answer is B: Moderate dehydration.

The World Health Organization (WHO) classifies dehydration in children based on the percentage of fluid loss from body weight. The three categories of dehydration according to WHO are:

1. No dehydration: This is when the fluid deficit is less than 5% of the child’s body weight. In this case, the child does not show signs of dehydration.


2. Some dehydration: This occurs when there is a fluid deficit of 5% to 10% of body weight. Symptoms may include dry mouth, thirst, reduced urine output, and slight decrease in skin turgor.


3. Severe dehydration: This is when the fluid deficit exceeds 10% of body weight, leading to more serious symptoms such as sunken eyes, dry mucous membranes, rapid pulse, low blood pressure, and possibly shock.

The "Moderate dehydration" category does not exist in the WHO classification. The term "Some dehydration" is used to describe a fluid deficit between 5% and 10%, which is often interpreted as moderate by some clinicians, but it is not labeled as "moderate" by WHO.

Why the other options are incorrect:

• No dehydration: This is a valid classification used by WHO to describe children who have no signs of dehydration or have a very minimal fluid deficit (less than 5% of body weight).


• Severe dehydration: This is also a valid classification used by WHO for children who experience a significant fluid deficit of more than 10% of body weight, leading to serious dehydration symptoms and possibly shock.

Here is a table that outlines the WHO guidelines for the classification of dehydration in children, based on the parameters mentioned:

Summary:

• No Dehydration: The child is well, alert, and shows no signs of dehydration. Skin pinch returns quickly, and eyes are normal.


• Some Dehydration: The child may appear restless or irritable, with slightly sunken eyes and a slower skin pinch response. They will be thirsty and drink eagerly.


• Severe Dehydration: The child appears lethargic or unconscious, with very sunken eyes. Skin pinch goes back slowly (≥2 seconds), and the child may drink poorly or not be able to drink.

This classification helps healthcare providers assess the degree of dehydration in children and determine the necessary interventions for rehydration.

Summary:

The WHO does not recognize "Moderate dehydration" as an official category. The correct terms are No dehydration, Some dehydration, and Severe dehydration. The key difference is the percentage of body weight lost due to fluid deficit, and the term "Moderate dehydration" is an incorrect interpretation of "Some dehydration," which covers fluid deficits of 5–10%.