Explore the medical implications of snow in this 13-minute video lecture. Learn about congenital heart diseases, with a focus on tetralogy and its associated symptoms like clubbing. Discover how pulmonary venous return affects the cardiovascular system and interpret chest x-rays related to these conditions. Gain valuable insights into the differential diagnosis of fever and rash on palms and soles, enhancing your clinical reasoning skills in pediatric cardiology and dermatology.