Table 1 Scale for grading the disease severity in patients with HFRS

1. SHOCK, HYPOTENSION ^a

Shock

10

Hypotension, systolic blood pressure < 90 mm Hg

5

Tachycardia, heart rate > 120/min

2

2. HAEMORRHAGES ^a

Massive: blood transfusion needed

5

Internal (melena, hematemesis, hemoptysis, intracranial)

3

Epistaxis

2

Petechiae, conjuctival injection, enanthema

1

3. GENERAL SYMPTOMS

Body temperature > 40°C

2

Seizure

2

Blurred vision

1

Vomiting and diarrhea

1

Anuria/oliguria

1

Dialysis requirement

1

4. Laboratory parameters

Serum urea and/or creatinine

> 5-times the normal value

5

> 4-times the normal value

4

> 3-times the normal value

3

> 2-times the normal value

2

Trombociti

< 20 × 10⁹/L

2

< 50 × 10⁹/L

1

AST, ALT

> 5-times the normal value

2

3-4-times the normal value

1

Lung X-ray

pneumonitis

2

pleural effusion

1