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Factors associated with shock in anaphylaxis.
1Department of Emergency Medicine, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan 682-714, Korea.
The American Journal of Emergency Medicine
|March 20, 2012
Summary
Elderly patients experiencing anaphylaxis with symptoms like cyanosis, syncope, and dizziness face a higher risk of developing shock. Early recognition of anaphylactic shock is crucial for effective treatment in emergency departments.
Area of Science:
- Anesthesiology
- Emergency Medicine
- Allergy and Immunology
Background:
- Anaphylaxis is a severe allergic reaction that can progress to life-threatening anaphylactic shock.
- Understanding the clinical characteristics and risk factors for anaphylactic shock is essential for timely intervention.
Purpose of the Study:
- To investigate the clinical features of anaphylactic shock.
- To identify factors associated with the development of anaphylactic shock in patients with anaphylaxis.
Main Methods:
- Retrospective analysis of 294 patients diagnosed with anaphylaxis over a 10-year period.
- Patients were categorized into shock and non-shock groups based on clinical presentation.
- Broad disease codes were used to ensure comprehensive subject identification.
Main Results:
- The shock group was older than the non-shock group (mean age 43 years).
- Drugs (radiocontrast media) were a more frequent cause of anaphylaxis in the shock group compared to the non-shock group (food).
- Associated factors for shock included older age, emergency medical services (EMS) use, radiocontrast media, cyanosis, syncope, and dizziness.
Conclusions:
- Older age and specific symptoms (cyanosis, syncope, dizziness) increase the risk of anaphylactic shock.
- Emergency department (ED) physicians must remain vigilant for potential progression to shock.
- Prompt recognition and management of anaphylactic shock are critical for patient outcomes.
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