The nurse has admitted a child with tricuspid atresia. The nurse would expect which initial lab result?

A high hemoglobin

A prolonged PTT

A low hematocrit

A low platelet count

Answer and Explanation

The Correct Answer is A

a) A high hemoglobin: Tricuspid atresia typically leads to decreased pulmonary blood flow, causing cyanosis and chronic hypoxemia, which can result in increased hemoglobin levels as the body compensates for low oxygen.

b) A prolonged PTT: While not typically associated with tricuspid atresia specifically.

c) A low hematocrit: Hematocrit levels might be normal or elevated due to chronic hypoxemia.

d) A low platelet count: Platelet count might not be directly affected by tricuspid atresia.

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Correct Answer is B

Explanation

a) Janeway spots: Janeway lesions are painless, small, erythematous or hemorrhagic macules found on the palms or soles, characteristic of infective endocarditis, not typically associated with rheumatic fever.

b) Polyarthritis 5 + joints: Polyarthritis involving multiple joints, often migrating, is a major manifestation of acute rheumatic fever.

c) Vomiting: While nausea and vomiting can occur, they are not specific to rheumatic fever.

d) Oster nodes: Osler nodes are tender nodules found in infective endocarditis, not typically seen in rheumatic fever.

A. Passive transplacental immunity from maternal immunoglobulin G B. Exposure to microorganisms during the birth process C. Low levels of antibodies D. High level of maternal antibodies to diseases to which the mother has been exposed

Correct Answer is C

Explanation

a) Passive transplacental immunity from maternal immunoglobulin G: While this provides some initial immunity, it does not fully account for the susceptibility to infections in newborns and young infants.

b) Exposure to microorganisms during the birth process: Though exposure can occur during birth, it is not the primary reason for heightened susceptibility to infections.

c) Low levels of antibodies: Newborns and young infants have underdeveloped immune systems and fewer antibodies, making them more vulnerable to infections.

d) High level of maternal antibodies to diseases to which the mother has been exposed: Maternal antibodies initially provide some protection, but they gradually decline, contributing to the infant's susceptibility to infections.

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The nurse has admitted a child with tricuspid atresia. The nurse would expect which initial lab result?

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Naxlex Comprehensive Predictor Exams

Which of the following is a major clinical manifestation of rheumatic fever (RF)?

Correct Answer is B

Explanation

A nurse is providing information to a group of new mothers. Which rationale would the nurse provide for why newborns and young infants are more susceptible to infection?

Correct Answer is C

Explanation

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