6/30/23, 9:53 PM Central cyanosis Pathway Feedback Search Clinical Topics Home Findings Central cyanosis Central cyanosis More common causes Hypothermia Obstructive sleep apnea Altitude sickness Less common causes Pulmonary valve stenosis Polycythemia Respiratory failure Tricuspid valve stenosis Methemoglobinemia Eisenmenger's syndrome Right-to-left shunt Hypoxemic respiratory failure Pseudocyanosis Uncommon causes Sulfhemoglobinemia https://web.pathway.md/findings/rec4RGSz33wql6Qx6 1/1