Classification of severity of anemia:

Hemoglobin concentration <30g/L 30～>59g/L 60～>90g/L >90g/L

Anemia Severity Extremely Severe Severe Moderate Mild

Grading Hemoglobin (g/L) Clinical Manifestations

Mild 120~91 (12~9.1g/dl) Symptoms Mild

Moderate 90～61 (9～6.1g/dl) Feeling palpitated and short of breath after physical exertion

Severe 60～31 (6～3.1g/dl) Feeling palpitated and short of breath even when resting in bed Shortness of breath

Extreme <30 (below 3.0 g/dl) often combined with anemic heart disease

There are endless incidents of patients with severe anemia suddenly fainting, so be careful.

There will be no sequelae after cure, and anemic heart disease will develop.