This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
All of the following statements about Tetralogy of fallot are true, Except 
Select and explain. 
A. JVP is normal, B. Second Hea sound is single, C. Ejection systolic murmur is third left intercostal space, D. First Hea sound is soft
D: First Hea sound is soft
Answer: D: First Hea sound is soft 
Explanation: Answer is D (First Hea Sound is soft) The murmur in tetralogy of Fallot relates to the degree of right ventricular outflow obstruction (pulmonic stenosis). It is a harsh ejection systolic murmur resulting from turbulent flow across the stenotic pulmonic valve The shunt murmur is absent because the shunt operates at a low pressure difference