Acute respiratory failure, status asthmaticus, pneumothorax, PE, and emergency response
Respiratory emergencies can develop rapidly in home care clients — often before EMS can arrive. Recognizing the clinical patterns of acute respiratory failure, status asthmaticus, tension pneumothorax, and pulmonary embolism, and knowing when to call 911 without waiting for clinical guidance, are the skills that determine whether a client survives. This lesson covers the recognition and immediate response framework for life-threatening respiratory events.
Acute respiratory failure occurs when the respiratory system cannot maintain adequate gas exchange — either failing to oxygenate (hypoxemic failure: SpO2 below 90%, PaO2 below 60 mmHg) or failing to eliminate CO2 (hypercapnic failure: rising CO2 leading to respiratory acidosis). In home care, the clinical picture is the guide: severe dyspnea, SpO2 not responding to supplemental oxygen, accessory muscle use with fatigue, tachycardia, altered mental status, cyanosis, and declining level of consciousness are the warning signs. Any of these combinations in a deteriorating client warrants 911 — do not wait for a worsening trajectory to confirm the decision.
Status asthmaticus is severe, sustained bronchospasm that does not respond to initial rescue bronchodilator therapy. Signs: significant wheezing or silent chest (air movement too poor to produce wheeze — an ominous sign), respiratory rate above 30, use of all accessory muscles, SpO2 below 90% despite O2 and bronchodilators, pulsus paradoxus, and inability to speak in full sentences. Call 911 immediately. While waiting for EMS: administer rescue inhaler again if available, place in optimal position (sitting upright), provide supplemental oxygen if available, and stay with the client.
Tension pneumothorax occurs when air enters the pleural space and cannot escape, progressively compressing the lung and shifting the mediastinum. Classic presentation: sudden severe dyspnea, absent breath sounds on the affected side (right or left unilaterally — not bilateral), tracheal deviation away from the affected side, hypotension, distended neck veins, and cyanosis. This is immediately life-threatening — call 911 immediately. Do not attempt to manage at home. Risk is elevated in clients with emphysema (bullae), recent procedures, trauma, or mechanical ventilation.
PE should be suspected in any home care client with sudden unexplained dyspnea — especially those with risk factors (immobility, recent surgery, DVT history, malignancy, HF, atrial fibrillation). Classic presentation: sudden pleuritic chest pain (sharp, worse with inspiration), dyspnea, tachycardia, and possibly hemoptysis. SpO2 may be mildly reduced or normal early on. A large PE can cause sudden cardiovascular collapse. Call 911 for any sudden unexplained dyspnea with tachycardia in a client with PE risk factors.
For any suspected respiratory emergency: call 911 first if the clinical picture is severe. Do not delay calling 911 to call the supervising clinician first — call EMS, then call the clinician. Position the client for maximal comfort and respiratory efficiency (upright or tripod). Apply supplemental oxygen if available. Begin BLS if the client loses consciousness and stops breathing effectively. Stay with the client. Document the timeline of events.
Complete this 5-question quiz with 80% or higher to earn your CEU credit for this lesson.