The mechanism behind cyanosis is different depending on whether it is central or<unk> . Central cyanosis Central cyanosis is caused by a decrease in<unk> al oxygen saturation (SaO2) and begins to show once the concentration of deoxyhemoglobin in the blood reaches a concentration of ≥ 5.0 g/dL (≥ 3.1 mmol/L or oxygen saturation of ≤ 85 %). Causes of central cyanosis are discussed below.<unk>  cyanosis<unk>  cyanosis happens when there is increased concentration of deoxyhemoglobin on the venous side of the<unk>  circulation. In other words, cyanosis is dependent on the concentration of deoxyhemoglobin. Patients with severe anemia may appear normal despite higher than normal concentrations of deoxyhemoglobin. On the other hand, patients with increased amounts of red blood cells (e.g. polycythemia vera) can appear cyanotic even with lower concentrations of deoxyhemoglobin.A baby with a heart condition. Note purple nailbeds.
symptom of Peripheral artery disease
symptom of Cardiovascular disease
symptom of Coronary artery disease
symptom of Deep vein thrombosis
symptom of Avascular necrosis
symptom of Arthritis
symptom of Myocardial infarction
symptom of Heart failure