ERYTHROSIS, OR FALSE CYANOSIS

Area of Science:

• Hematology
• Clinical Medicine
• Pathophysiology

Background:

• Vaquez' disease, a type of polycythemia, is characterized by an overproduction of red blood cells.
• Understanding the clinical manifestations and terminology associated with polycythemia is crucial for accurate diagnosis and patient care.

Purpose of the Study:

• To investigate the blood gas parameters in a patient diagnosed with Vaquez' disease.
• To differentiate the characteristic skin coloration in polycythemia from cyanosis and propose a new descriptive term.

Main Methods:

• Analysis of venous blood gas parameters, including oxygen unsaturation, total hemoglobin, and oxygen capacity.
• Clinical observation of skin and mucous membrane coloration.

Main Results:

• Venous blood samples revealed normal oxygen unsaturation and carbon dioxide content.
• Abnormally high total hemoglobin and oxygen-carrying capacity were observed.
• The patient presented with reddish, rather than bluish, skin and mucous membranes.

Conclusions:

• Despite elevated hemoglobin levels in Vaquez' disease, oxygen transport may remain efficient with normal oxygen unsaturation.
• The distinct reddish skin tone in polycythemia is proposed to be termed 'erythrosis'.
• Erythrosis should be distinguished from cyanosis to improve clinical description and understanding of polycythemic conditions.