Approach to acute respiratory distress on the wards
Acute respiratory distress in a hospitalized ward patient is a rapid-response emergency in which a structured airway, breathing, and circulation assessment identifies whether hypoxemia, hypercapnia, upper airway obstruction, or a nonrespiratory mimic is driving the deterioration. The cause, commonly pulmonary embolism, pneumothorax, bronchospasm, cardiogenic pulmonary edema, atelectasis, or opioid-induced hypoventilation, is established by bedside exam plus a targeted first test, and first-line treatment pairs titrated oxygen and positioning with cause-directed therapy such as needle decompression, bronchodilators, diuresis, anticoagulation, or naloxone.
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What this article covers
- Overview
What the call means: a nurse or family member reports a ward patient with new or escalating breathlessness, and the first task is a structured airway, breathing, and circulation (ABCs) assessment, not a single diagnosis.
- Epidemiology
Who triggers the call: nursing staff activate most ward emergency responses for new dyspnea or a falling saturation, though any team member or family member can trigger the same response.
- Risk factors
Recent surgery: thoracic or upper abdominal surgery and poor pain control produce shallow breathing that predisposes to atelectasis and secretion retention.
- Pathophysiology
Hypoxemic mechanism: shunt, the perfusion of alveoli collapsed or flooded with fluid, blood, or cells, as in atelectasis, pneumonia, or cardiogenic pulmonary edema, is the most common mechanism in…
- Clinical features
Vital sign pattern: tachypnea with a saturation below baseline, accessory muscle use, and an inability to complete a sentence mark significant distress rather than mild breathlessness.
- Differential diagnosis
Pulmonary embolism: sudden pleuritic chest pain, tachycardia, and hypoxemia, often with unilateral leg swelling, but the chest radiograph is typically normal, unlike the focal infiltrate of pneumonia.
- Diagnosis
What establishes the cause: no single test diagnoses distress itself; the etiology is established by combining the bedside exam pattern, vital signs, breath sounds, and mental status with the first test that matches the leading hypothesis.
- Management
First, stabilize the airway and breathing: apply supplemental oxygen, target Spo2 at or below 96% (exceptions: carbon monoxide poisoning, cluster headache, sickle cell crisis, pneumothorax), sit the…
- Complications
Missed or delayed diagnosis: delayed recognition of tension pneumothorax, massive pulmonary embolism, or anaphylaxis can progress to cardiac arrest within minutes.
- Prognosis
Effect of rapid response activation: rapid response and medical emergency team implementation is tied to a variable but consistent decline in cardiac and respiratory arrests and in-hospital mortality.
- Prevention
VTE prophylaxis: assess every hospitalized patient for venous thromboembolism risk and prescribe pharmacologic prophylaxis unless contraindicated; pneumatic compression devices add no benefit once pharmacologic prophylaxis is in place.
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