You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is True about 'Tetralogy of Fallot' (TOF) are all of the following EXCEPT? and explain in detail?
TETRALOGY OF FALLOT: --> MC congenital cyanotic hea disease in children --> Contain 4 COMPONENTS: 1. Large, unrestricted VSD 2. Pulmonary infundibular stenosis 3. Overriding aoa 4. Right ventricular hyperophy --> CLINICAL FEATURES: Cyanosis Clubbing Polycythemia Cyanotic spells Hea failure is not seen in TOF, unless it is complicated by Anemia /Infective endocarditis /Myocarditis / Systemic hypeension Severity of cyanosis is directly propoional to the severity of pulmonary stenosis; while intensity of murmur is inversly propoional to severity of pulmonary stenosis During cyanotic spell, murmur decreases or becomes absent -Ostium primum type ASD: It is situated in the lower poion of atrial septum and overlies mitral and tricuspid valves. Left axis detion is seen in ostium primum ASD due to RV conduction defect. - Ostium secundum is most common type of ASD - SYNDROMES ASSOCIATED WITH ASD 1. Pierre Robin Sequence 2. TAR Syndrome 3. Fetal Alcohol syndrome 4. Ehler Danlos Syndrome 5. Down Syndrome 6. Holt-Oram syndrome 7. Ellis van Creveld Syndrome 8. Rubinstein Taybi syndrome