primary hypertension {Ans: -90-95% all cases -no specific cause -increased SNS activity, over production of sodium retaining hormone and vasoconstrictors, in. Na intake, greater BMI, excessive alcohol, hormones, inflammation}Kawasaki disease - acquired heart disease {Ans: -acute self-limiting systemic vasculitis -affects primarily the skin, mucous membrane of resp tract, lymph nodes, heart -affects 1-14 years old -75% cases under 5 -common in Japanese or korean -spontaneous recovery 3-4 weeks}tetralogy of fallot manifestations {Ans: -acute cyanosis at birth to mild cyanosis over the first year -systolic murmur -cyanosis and hypoxia episodes -anoxic spells during crying or after feeding -apnea, brady, clubbing of nails, polycythemia}upper resp tract diseases {Ans: -above thoracic inlet -inspiratory stridor, hoarseness, suprasternal retractions -differential diagnosis of stridor: croup, epiglottitis, foreign body aspiration}normal sinus rhythm -bradycardia and tachycardia {Ans: -origin: SA node -rhythm: regular (R to R) -rate regular -P wave before QRS -QRS narrow (0.06-0.1) normal, vs brady and tachy: rate just changes}pulmonary arterial hypertrophy clinical manifestations {Ans: -abnormal CXR -fatigue, chest discomfort, tachypnea, dyspnea -peripheral edema, JVD, precordial heave, louder S2}ventricular fibrillation {Ans: quivering of ventricles, impedes pumping function of the heart}Laplace's Law {Ans: -Tension in ventricle wall produces intraventricular