Table 1 2010 World Allergy Organization (WAO) subcutaneous immunotherapy systemic reaction grading system
From: A single centre retrospective study of systemic reactions to subcutaneous immunotherapy
WAO systemic reaction grade | Reaction characteristics |
|---|---|
1 | Symptoms from one organ system, excluding asthma, gastrointestinal symptoms or cardiovascular symptoms |
2 | Asthma, gastrointestinal symptoms or cardiovascular symptoms |
3 | Patients with symptoms from multiple organ systems, or throat tightness/discomfort suggestive of upper airway edema |
4 | Hypotension (systolic blood pressure of less than 90 mmHg or less than 30% of baseline) or respiratory failure |
5 | Death |