Differentiating Features Between Central and Peripheral Cyanosis Mechanism - Arterial destauration Sites - Skin, mucous membrane of oral cavity Temperature - Warm Clubbing - Present Secondary erythrocytosis - Present On warming - Cyanosis same Oxygen therapy - Pulmonary cause can improve Exercise - Cyanosis worsens Arterial blood gas - pO2 low Mechanism - Increased peripheral utilization Sites - Only skin involved Temperature - Cold clammy Clubbing - Absent Secondary erythrocytosis - Absent On warming - Cyanosis reduces Oxygen therapy - Cyanosis reduces Exercise - Cyanosis same or improves Arterial blood gas - pO2 normal #Cyanosis #Central #Peripheral #Comparison #Signs #Symptoms
