Table 3.

Overall prognosis of the Haematopoietic syndrome on the basis of the degree of severity.⁶

Grading	Degree of damage	Extent of involvement	Prognosis
H1	1st Degree	Mild damage	Autologous recovery without critical phase
H2	2nd Degree	Moderate damage	Autologous recovery with low risk critical phase
H3	3rd Degree	Severe damage	Autologous recovery with high risk critical phase
H4	4th Degree	Damage fatal	Autologous recovery unlikely

Adapted from: Fliedner T.M., Friesecke I., Beyrer K., British Institute of Radiology, editors. Medical management of radiation accident—manual on the Acute Radiation Syndrome (METREPOL European Commission concerted action) British Institute of Radiology; Oxford: 2001. p. 1–66. Table No. 6, Overall prognostic aspects of the HS on the basis of the clinical grading (critical phase = duration with constant cell counts below the normal range, resulting in high or low risk groups for developing clinical symptoms such as bleeding and infectious diseases owing to differences in the absolute cell counts); p 21.