What dieses can cyanosis be a symptom of in respiratory and cardiovascular systems?

Diseases of respiratory tract( respiratory failure) • Foreign body of trachea, larynx • Choanal atresia • Epiglottitis • Bronchiolitis • Severe asthma attack • End stage of cystic fibrosis Diseases of cardiovascular system • Cyanotic cardiac defect (ie. Falot syndrome) • Cardiogenic shock • In all the mentioned condiotions exept cardiogenic shock central cyanosis