A parent tells the nurse, "My 9-month-old baby no longer has the same strong grasp that was present at birth and no longer acts startled by loud noises." How should the nurse explain these changes in behavior?

Correct Answer: D

Rationale: The correct answer is D. The grasp reflex and startle reflex (Moro reflex) are normal in newborns but typically disappear as the infant's nervous system matures and voluntary control develops. At around five months of age, these reflexes are replaced by voluntary movements as part of the normal developmental process. Choices A, B, and C are incorrect. Choice A suggests delaying a decision until further assessment, which is not necessary as the disappearance of these reflexes is a normal part of infant development. Choice B implies a developmental delay, which is not the case as these reflexes naturally disappear with age. Choice C recommending additional sensory stimulation is unnecessary and not the reason for the absence of these reflexes.

Correct Answer: A

Rationale: Monitoring the temperature of a child with minimal change nephrotic syndrome is crucial to detect early signs of infection. Infection is a common complication in nephrotic syndrome, and fever can be an early indicator. Hypertension (choice B) is not typically associated with nephrotic syndrome. Encephalopathy (choice C) is a neurological complication and would present with altered mental status rather than a change in temperature. Edema (choice D) is a common symptom of nephrotic syndrome but is not typically monitored through temperature assessment.

Correct Answer: C

Rationale: Visible peristalsis and weight loss are classic clinical manifestations of pyloric stenosis. The obstruction at the pyloric sphincter causes visible peristalsis as the stomach tries to push food through the narrowed opening, leading to the appearance of waves across the abdomen. Weight loss occurs due to poor feeding and frequent vomiting associated with pyloric stenosis. Choices A, B, and D are incorrect. Abdominal rigidity and pain on palpation, rounded abdomen and hypoactive bowel sounds, as well as distention of the lower abdomen and constipation are not typically seen in pyloric stenosis.

Correct Answer: A

Rationale: Petechiae, infection, and fatigue are common signs and symptoms of leukemia related to bone marrow involvement. Petechiae are small red or purple spots on the skin caused by bleeding under the skin due to low platelet counts. Infection susceptibility increases due to decreased white blood cells from compromised bone marrow function. Fatigue is a common symptom of anemia resulting from decreased red blood cell production. Choices B, C, and D are incorrect as they do not align with the typical signs and symptoms of leukemia associated with bone marrow dysfunction.

Correct Answer: C

Rationale: When palpating the abdomen of an infant with hypertrophic pyloric stenosis (HPS), the nurse would expect to feel an olive-sized mass in the right upper quadrant. This finding is characteristic of HPS due to the hypertrophied pylorus muscle. Choices A, B, and D are incorrect. A distended colon is not typically associated with HPS. Marked tenderness around the umbilicus is not a specific finding of HPS. Rhythmic peristaltic waves in the lower abdomen are not expected in HPS, as the condition primarily affects the pylorus region of the stomach.