Chowdhury, Ujjwal KSubramaniam, Ganapathy KKothari, Shyam SAiran, BalramVenugopal, Panangipalli2005-01-282009-05-272005-01-282009-05-272005-01-28Chowdhury UK, Subramaniam GK, Kothari SS, Airan B, Venugopal P. Congestive heart failure in unoperated tetralogy of Fallot: can hypoxia be a cause? Indian Heart Journal. 2005 Jan-Feb; 57(1): 65-7http://imsear.searo.who.int/handle/123456789/3586A 10-year-old boy with tetralogy of Fallot and congestive heart failure underwent a right-sided modified Blalock-Taussig anastomosis because of severe biventricular dysfunction and repeated hypercyanotic spells. Postoperatively, there was improvement in systemic oxygen saturation and myocardial function. We postulate that congestive heart failure occurred because of severe myocardial hypoxia and its elimination resulted in markedly improved cardiac performance.engAnoxia --complicationsBlood Vessel Prosthesis ImplantationChildHeart Failure --etiologyHumansMaleOxygen --bloodTetralogy of Fallot --complicationsVentricular Dysfunction, Left --etiologyCase Reports