Physiological Adaptation: Managing Acute Emergencies
A 68-year-old male with a history of heart failure and Type 2 Diabetes presents to the emergency department. The client's daughter reports he has been 'confused and lethargic' for 24 hours with a productive cough. Assessment reveals: BP 88/54 mmHg, HR 118 bpm, RR 26 bpm, Temp 102.4°F (39.1°C), and SpO2 89% on room air. The client is difficult to arouse, skin is warm and flushed, and crackles are heard in the bilateral lung bases. Laboratory results show a blood glucose of 542 mg/dL and a serum lactate of 4.2 mmol/L.
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Recognizing Early Sepsis and Septic Shock
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection. Septic shock is a subset of sepsis characterized by persistent hypotension despite fluid resuscitation and a serum lactate > 2 mmol/L.
- Warm, flushed skin (early) vs. cool, clammy skin (late)
- Tachypnea and tachycardia are compensatory mechanisms
- Hypotension indicates a failure of compensation
- Elevated lactate levels indicate tissue hypoxia and anaerobic metabolism