GlossaryFallotís Tetralogy: Also known as tetralogy of Fallot (TOF), it is a rare cardiac condition caused by a combination of four heart defects that are present at birth.
Methemoglobin: An abnormal form of hemoglobin, incapable of binding oxygen, where the iron in the heme is in ferric form instead of the ferrous form that is usually present in normal hemoglobin.
Pleural Effusion: A build-up of fluid between the tissues lining the lungs and the chest.
Pneumothorax: A collapsed lung.
Pulmonary Edema: A condition caused by excess fluid in the lungs.
Raynaudís Phenomenon: A condition in which the fingers and toes feel numb and cold due to the temporary reduction of the blood supply, resulting in low oxygen saturation of blood.
Sulfhemoglobin: A green pigment derived from hemoglobin that cannot be reconverted back to normal hemoglobin and causes cyanosis.
Truncus Arteriosus: A rare heart condition where a single great artery leaves the heart and divides into the pulmonary artery and the aorta.