Table 1.
Definitions of four HV disease categories
| Criteria | Definition of four HV disease categories | |||
|---|---|---|---|---|
| HF | Mild HPS group A | Mild HPS group B | Moderate to severe HPS | |
| Febrile prodrome | + | + | + | + |
| Dyspnea* | Absent | Absent | Occasional | Marked |
| Chest X-ray | Normal | Abnormal | Abnormal | Abnormal |
| Hypoxemia | Absent | SaO2 > 90% | SaO2 > 85% | SaO2 < 85% |
| Oxygen therapy | None | None | Nasal cannula | CPAP/MV |
CPAP/MV = continuous positive airway pressure/mechanical ventilation.
*
Presence of tachypnea > 24/min and complaint of shortness of breath.