Feisal Rahimpour - Assistant Professor, Department of Pediatric Cardiology, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
Reza Ghasemi - Assistant Professor, Department of Cardiology, ۹ Day Hospital, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
Maryam Moradian - Assistant Professor, Department of Pediatric Cardiology, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
Mahmood Hosseinzadeh Maleki - Associated Professor, Department of Cardiac Surgery, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
Mohsen Yaghubi - MSc in Extra-Corporeal Technology, Department of Extra-Corporeal Circulation (ECC), Razavi Hospital, Imam Reza International University, Mashhad, Iran

The Tetralogy of Fallot is the most common cyanotic congenital heart disease that is often associated with chromosomal aberration had a high prevalence rate of all congenital heart diseases. The association of the Tetralogy of Fallot (ToF) with other congenital cardiac defects, especially with hypertrophic cardiomyopathy, is infrequent. While, unlike the tetralogy of Fallot, hypertrophic cardiomyopathy is accompanied by specific gene loci. We report this scarce association in a ۶-month male infant, cyanotic since birth and known with ToF, in her first hospital admission for treatment of recurring cyanotic crises. After the preliminary evaluations and the unsuccessful stenting of the patent ductus arteriousus (PDA) under an angiographic manner, he was prepared to undergo cardiac surgery to establish a modified Blalock-Taussig Shunt procedure. The patient was discharged in good condition and suggested that his parents follow up on his cardiac function after it. On follow-up at the age of three, the child had no cyanotic crises in this period.

Tetralogy of Fallot, Hypertrophic Cardiomyopathy, Congenital Heart Defects