168) ANSWER

B) Dyspnea

RATIONALE

Children with acyanotic heart defects may have a murmur without other symptoms. Dyspnea and tachycardia are early signs of pulmonary edema, which may lead to congestive heart failure. Eliminate all normal findings in a patient with acyanotic heart disease. Weight gain could be a positive growth sign or a sign of impending heart failure. Without additional information, that option is questionable. Dyspnea is a negative finding that should be reported.