ATI RN · Obstetrics and Pediatrics · Pediatric Nursing Exam Flashcards

Option A: Sedation is the most common reported adverse effect of first-generation antihistamines due to their ability to cross the blood-brain barrier and block central histamine receptors, leading to drowsiness and decreased alertness. This side effect is particularly significant in populations such as the elderly and those requiring alertness for activities like driving.

Option B: Blurred vision can occur with first-generation antihistamines due to anticholinergic effects, but it is not the most commonly reported adverse effect. Sedation is more prevalent and clinically significant.

Option C: Urinary retention is a potential side effect of first-generation antihistamines, particularly in older adults, but it is less frequently reported than sedation. The sedative effects are more universally experienced across different patient populations.

Option D: Dry mouth is a common anticholinergic effect associated with first-generation antihistamines, yet it does not occur as frequently as sedation. The sedative properties are the primary concern for most patients using these medications.

Takeaways: The most common adverse effect of first-generation antihistamines is sedation, which can significantly impact patient safety and daily functioning, necessitating careful patient education regarding the risks associated with these medications.

Option C: Peak incidence of acute bronchiolitis occurs between 2-6 months of age, as this age range is characterized by the highest susceptibility to viral infections, particularly respiratory syncytial virus (RSV), which is the primary cause of bronchiolitis in infants. This age group has immature immune systems, making them more vulnerable to respiratory illnesses.

Option A: The age range of 9-12 months does not reflect the peak incidence, as by this time, many infants have developed some immunity to common respiratory viruses, reducing the incidence of bronchiolitis.

Option B: While 6-12 months includes a significant number of cases, it does not represent the peak incidence, which is more accurately captured in the younger age group of 2-6 months.

Option D: The age range of 12-24 months is beyond the peak incidence for acute bronchiolitis, as most children have outgrown the susceptibility to this condition by this age, with a significant decrease in cases.

Takeaways: Understanding the peak incidence of acute bronchiolitis at 2-6 months highlights the importance of monitoring infants for airway obstruction and ventilation before complications arise, as they are at the highest risk during this developmental stage.

Option B: Immature central respiratory control is the primary cause of apnea of prematurity in neonates. This condition arises due to the underdevelopment of the brain's respiratory centers, leading to intermittent cessation of breathing. As the infant matures, these centers develop, reducing the frequency of apnea episodes.

Option A: Airway obstruction does not account for apnea of prematurity, as this condition is primarily related to central nervous system immaturity rather than physical blockage of the airway.

Option C: Congenital heart disease may cause respiratory issues but is not the underlying cause of apnea of prematurity, which specifically relates to the immaturity of respiratory control mechanisms in preterm infants.

Option D: Neuromuscular disorders can lead to breathing difficulties, but apnea of prematurity is specifically due to the immature central respiratory control rather than neuromuscular function.

Takeaways: Understanding that apnea of prematurity stems from immature central respiratory control highlights the need for monitoring and supportive care in preterm infants to manage this condition effectively.

Option A: Muscle weakness is a definitive and common feature of polymyositis, characterized by symmetrical proximal muscle weakness that can significantly impair daily activities and quality of life. This weakness is often progressive and can lead to difficulties in performing tasks such as climbing stairs or lifting objects.

Option B: Rash is not a common feature of polymyositis; it is more characteristic of dermatomyositis, which presents with skin manifestations alongside muscle weakness. While some patients may experience skin changes, they are not a defining feature of polymyositis.

Option C: Joint pain can occur in some patients with polymyositis, but it is not a hallmark symptom. The primary presentation focuses on muscle weakness rather than joint involvement, which may be seen in other conditions.

Option D: While muscle weakness is a key feature, polymyositis does not typically encompass all the symptoms listed in the other options. Therefore, stating that all of the above are common features is misleading.

Takeaways: Muscle weakness is the hallmark of polymyositis, distinguishing it from other myopathies and conditions like dermatomyositis, which requires differentiation in diagnosis and management for effective treatment.

Option D: Pasteurella species are the most common microorganisms associated with cat bites, as they are part of the normal flora in cats' mouths. Infection from these bites can lead to significant complications if not treated promptly, emphasizing the need for appropriate wound care and antibiotic therapy.

Option A: Staphylococcus species are more commonly associated with human skin flora and are not the primary pathogens linked to cat bites.

Option B: Streptococcus species can cause infections but are not the most prevalent organisms found in cat bite injuries, where Pasteurella is more significant.

Option C: Eikenella species are typically associated with human bites and are not relevant to cat bite infections, which predominantly involve Pasteurella.

Takeaways: Understanding the common pathogens involved in bite injuries, particularly the prevalence of Pasteurella species in cat bites is crucial for effective management and treatment of these wounds.