Hafnarstræti 2, 400 Ísafjörður, ground floor apartment 1B. Two-story wooden building constructed in 1955. Main entrance is accessible via a small ramp. No elevator, one central stairwell. Street parking available. Building equipped with basic smoke detectors. Current conditions: 3°C, overcast, good visibility. GPS coordinates: 66.0752° N, 23.1234° W. Nearest landmark: Ísafjörður harbor.
65-year-old male, found unresponsive. Primary symptoms: Unresponsive, not breathing, no pulse detected by caller. Secondary symptoms: None reported. Patient is lying on the living room floor. Medical history: History of hypertension and type 2 diabetes. Medications: Metformin 500mg twice daily, Lisinopril 10mg daily. No known allergies. Last meal was a light lunch at 13:00.
Timeline: 1430 hours: Patient was watching TV, appeared normal 1440 hours: Caller (patient's son) found patient slumped on the floor, unresponsive 1441 hours: Caller checked for breathing and pulse, found neither 1442 hours: Caller initiated emergency call 1443 hours: Current time, patient still unresponsive, no breathing, no pulse Prior Events: Patient has had no recent illnesses. Last medical check-up was 6 months ago, routine follow-up. Patient lives alone, but son visits daily.
Initial Impression: Cardiac Arrest Justification for F1 Classification: - Patient is unresponsive, not breathing, and pulseless, indicating a life-threatening emergency - Immediate intervention is required to restore circulation and breathing - Time-critical condition requiring immediate dispatch of ALS resources Differential Diagnoses: 1. Cardiac Arrest due to primary cardiac event (high probability) 2. Cardiac Arrest secondary to respiratory failure (less likely given no reported respiratory distress prior to collapse) 3. Cardiac Arrest secondary to severe metabolic disturbance (less likely given history) 4. Cardiac Arrest secondary to drug overdose (less likely given history and no evidence of drugs at scene) Required Actions: - Immediate dispatch of ground EMS with ALS capabilities - Pre-arrival instructions for CPR to caller - Early hospital notification for potential cardiac catheterization