Shortness of Breath Triage

Dyspnea is a symptom, not an acuity rating or a diagnosis. Acute shortness of breath occurs when ventilatory demand exceeds the patient's ability to move air, exchange gases, or sustain the work of breathing. The patient's description matters, but triage priority comes from what the body is doing: respiratory rate and effort, ability to speak, position, oxygen saturation, mental status, and circulatory stability. A patient may describe breathlessness as “usual” while silently tiring, or may report dramatic distress with preserved oxygenation and no objective compromise. Neither presentation should be accepted at face value. The triage question is whether airway patency, ventilation, oxygenation, or perfusion is threatened now. Symptom duration helps identify causes, but it does not outrank visible respiratory distress or altered consciousness. The first working diagnosis is therefore often “respiratory compromise until assessed,” rather than asthma, COPD, anxiety, pneumonia, heart failure, or pulmonary embolism. This prevents a familiar label from delaying treatment of a less familiar but immediately dangerous condition.