1
"Tetralogy of Fallot” is a cardiac anomaly characterized by:
(A) . Ventricular septal defects
(B) . Hypertrophy of left ventricle
(C) . Pulmonary stenosis
(D) . Dextraposition of aorta
Choose the correct answer from the options given below:
EXPLANATION
Congenital Anomalies & Cardiovascular Malform
- Cardinal Defects of Tetralogy of Fallot:
- Tetralogy of Fallot is a congenital malformation complex of the conotruncal septum consisting of four interrelated structural cardiac defects:
- Ventricular Septal Defect (VSD): Subaortic interventricular communication [TRUE].
- Pulmonary Stenosis: Hypoplastic pulmonary trunk or subpulmonic/infundibular narrowing obstructing right ventricular outflow [TRUE].
- Dextroposition (Overriding) of Aorta: The aortic root is shifted rightward directly above the VSD [TRUE].
- Hypertrophy of Right Ventricle: Secondary compensatory right ventricular myocardial hypertrophy due to systemic pressure overload (Statement B erroneously specifies left ventricular hypertrophy) [Statement B is FALSE].
Correct option: (4) (A), (C) and (D) only.
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