A thrill palpated in the right clavicular region or in the upper right sternal border area is suggestive of.
pulmonary valve stenosis.
aortic valve stenosis.
tetralogy of Fallot.
a ventricular septal defect.
The Correct Answer is B
Rationale:
A. Pulmonary valve stenosis typically produces a systolic murmur and thrill at the upper left sternal border.
B. A thrill palpated in the right clavicular region or upper right sternal border suggests aortic valve stenosis, as turbulent blood flow across a narrowed aortic valve produces a palpable vibration in this area.
C. Tetralogy of Fallot is characterized by a harsh systolic murmur at the left upper sternal border due to right ventricular outflow obstruction and does not typically produce a thrill at the right upper sternal border.
D. A ventricular septal defect generally produces a systolic murmur and thrill at the lower left sternal border, not the right upper sternal border.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale:
A. Hypocalcemia in infants can present with neuromuscular irritability, which includes a stridorous or high-pitched cry, positive Chvostek sign (facial muscle twitching when the facial nerve is tapped), tremors, and vomiting. Early recognition and treatment are critical to prevent seizures or cardiac complications.
B. Gastroesophageal reflux may cause vomiting and irritability but does not produce Chvostek sign or tremulousness.
C. Whooping cough presents with paroxysmal coughing and inspiratory “whoop”, but stridor and Chvostek sign are not features.
D. Rickets is associated with bone deformities, delayed growth, and hypocalcemia over time, but the acute neuromuscular signs seen here suggest immediate evaluation for hypocalcemia.
Correct Answer is C
Explanation
Rationale:
A. Hepatitis A vaccine prevents hepatitis A virus infection, which primarily affects the liver, not viral gastroenteritis caused by other pathogens.
B. Hepatitis B vaccine prevents hepatitis B virus infection, also primarily hepatic, and does not protect against common viral gastroenteritis.
C. Rotavirus vaccine is the most effective preventive measure against rotavirus infection, which is a leading cause of severe viral gastroenteritis in infants and young children worldwide. It reduces the incidence of hospitalization, severe diarrhea, and dehydration caused by rotavirus.
D. Vaccine for enterotoxigenic E. coli (ETEC) is not routinely available for infants and children in most countries and is primarily targeted for travelers, not for general pediatric prevention.
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