A confused and lethargic 24-year-old male patient has intentionally overdosed on a narcotic medication. His vital signs are as follows: pulse, 36; respirations, 10 breaths/min; blood pressure, 50/20 mmHg; and SpO2, 88% with 15 liters per minute of oxygen applied by Emergency Medical Responders. What is the greatest danger to this patient's well-being?

Pathophysiology is a medical science that studies how diseases affect the body's systems. It combines the study of pathology (the causes and effects of disease) and physiology (how the body's systems function).

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