Tetralogy of Fallot (TOF) Explained

Tetralogy of Fallot Includes four defects— VSD, pulmonary stenosis, overriding aorta, and right ventricular hypertrophy. If pulmonary vascular resistance is higher than systemic resistance, the shunt is from right to left; if systemic resistance is higher than pulmonary resistance, the shunt is from left to right. An infant may be acutely cyanotic at birth or may have mild cyanosis that progresses over the first year of life as the pulmonic stenosis worsens. A characteristic murmur is present. Acute episodes of cyanosis and hypoxia (hypercyanotic episode), called blue spells or tet spells, occur when the infant’s oxygen requirements exceed the blood supply, such as during periods of crying, feeding, or defecating Become a premium Medcriner TODAY! https://www.youtube.com/channel/UCb1LglhAi_YGQnazlqeWRsQ/join Check our website for more medical lecture notes at https://medcrine.com Follow us on www.x.com/medcrine Facebook at www.fb.me/medcrine Pinterest at pinterest.com/medcrine Telegram at t.me/medcrine email us on info@medcrine.com