Hafnargata 23, 735 Norðfjörður. Single-story wooden residential house, built in 1965. Main entrance faces the street, no security features. Gravel driveway. Current conditions: 10°C, partly cloudy, good visibility. GPS coordinates: 65.1890° N, 14.0032° W. Nearest landmark: Norðfjörður harbor.
40-year-old female experiencing severe allergic reaction after eating shellfish. Primary symptoms: Difficulty breathing, throat swelling, widespread hives, facial angioedema. Secondary symptoms: Dizziness, nausea, rapid heart rate. Patient is conscious but anxious. Patient is at home in her kitchen. Medical history: Known shellfish allergy, carries an EpiPen, asthma. Medications: Ventolin inhaler as needed, Cetirizine 10mg daily, EpiPen (0.3mg). Last meal was a seafood stew at 18:00.
Timeline: 18:00 hours: Patient consumed seafood stew. 18:15 hours: Initial symptoms of itching and hives appeared. 18:20 hours: Symptoms rapidly progressed to difficulty breathing and throat swelling. 18:25 hours: Patient self-administered EpiPen. 18:27 hours: Patient called emergency services, current time. Prior Events: Patient has had several previous allergic reactions to shellfish, all treated successfully with EpiPen and antihistamines. Patient has had asthma since childhood, well controlled with inhaler. No recent illnesses or injuries. Last medical check-up 6 months ago, routine follow-up.
Initial Impression: Severe Anaphylactic Reaction Justification for F2 Classification: - High probability of life-threatening airway compromise based on symptoms - Rapid symptom onset and progression - Known shellfish allergy and history of anaphylaxis - Time-sensitive condition requiring immediate intervention Differential Diagnoses: 1. Anaphylactic Reaction (most likely) 2. Severe Allergic Reaction (without anaphylaxis - less likely given airway symptoms) 3. Angioedema (secondary to allergic reaction) 4. Acute Asthma Exacerbation (less likely given sudden onset and other symptoms) Required Actions: - Dispatch of ground EMS with ALS capabilities - Oxygen therapy and airway management preparation - Second EpiPen administration if needed - Preparation for transport to nearest hospital with emergency services