Miðgarður 17, 700 Egilsstaðir. Detached single-story residential house, built in 1985. Main entrance via front door with one step. No other access points. No security features. Weather conditions: 10°C, overcast, light wind, good visibility. Road conditions: dry and clear. GPS coordinates: 65.2642° N, 14.3952° W. Nearest landmark: Egilsstaðir Swimming Pool.
68-year-old male, found unresponsive. Primary symptoms: Unresponsive, not breathing, no pulse detected. Secondary symptoms: None reported. Patient found lying on the living room floor. Medical history: History of hypertension, type 2 diabetes, previous myocardial infarction 5 years ago. Medications: Metformin 1000mg twice daily, Ramipril 10mg daily, Atorvastatin 40mg daily, Aspirin 75mg daily. No known allergies. Last meal was a light lunch at 13:00.
Timeline: 1415 hours: Patient was sitting in his chair watching TV. 1420 hours: Caller (patient's son) found the patient slumped over in his chair, unresponsive. 1421 hours: Caller attempted to wake the patient, no response. Caller checked for breathing, found none. 1422 hours: Caller initiated CPR (chest compressions only), called emergency services. 1423 hours: Current time, CPR in progress.
Initial Impression: Cardiac Arrest Justification for F1 Classification: - Unresponsive, not breathing, no pulse detected - High probability of life-threatening emergency - Time-critical intervention required (CPR, defibrillation) Differential Diagnoses: 1. Cardiac Arrest (most likely) 2. Severe Hypoglycemia (less likely given no history of recent insulin use and known history of MI) 3. Massive Stroke (less likely given sudden onset) 4. Pulmonary Embolism (possible, but less likely than cardiac arrest) Required Actions: - Dispatch of ground EMS with ALS capabilities - Immediate CPR instructions to caller - AED location confirmation - Preparation for advanced life support and transport to nearest hospital