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Published on: November 10, 2023
[Chest pain unit: first experience in Chile]
Pablo Castro1, Ramón Corbalán, Rodrigo Isa
1Departamento de Enfermedades Cardiovasculares, Hospital Clínico y Facultad de Medicina, Pontifica Universidad Católica de Chile, Chile. pcastro@med.puc.cl.
Insights
A dedicated Chest Pain Unit (CPU) effectively evaluates acute chest pain, improving diagnosis of acute coronary syndrome (ACS) and enabling safe discharge for low-risk patients.
Area of Science:
- Cardiology
- Emergency Medicine
- Clinical Risk Stratification
Context:
- Many emergency room admissions for chest pain are not due to acute coronary syndrome (ACS).
- Misdiagnosis and premature discharge of ACS patients lead to significantly increased short-term mortality.
- Chest Pain Units (CPUs) offer a structured approach to manage acute chest pain.
Purpose:
- To assess the effectiveness of a Chest Pain Unit (CPU) in an emergency department setting for evaluating patients with acute chest pain.
Summary:
- A prospective study evaluated 407 patients with chest pain using a CPU. Patients were risk-stratified into high, intermediate, and low probability for ACS.
- High-probability patients were admitted to the Coronary Unit (CU), while moderate-probability patients underwent further CPU evaluation, and low-probability patients were discharged.
- Results showed 73% of high-probability patients had confirmed ACS, and 86% of moderate-probability patients were safely discharged after CPU evaluation.
Impact:
- Implementing a structured risk evaluation in a CPU enhances acute chest pain management.
- Facilitates timely admission and treatment for high-risk ACS patients.
- Enables safe discharge protocols for low-risk patients, optimizing resource utilization and patient outcomes.
Background:
In large series, nearly 60% of admissions for suspected acute coronary syndrome (ACS) had a non-coronary etiology of the pain. However, short term mortality of non recognized ACS patients, mistakenly discharged from the emergency room is at least twice greater than the expected if they would had been admitted. The concept of a chest pain unit (CPU) is a methodological approach developed to address these issues.
Aim:
To evaluate the efficacy of a CPU in the emergency room of a general hospital for evaluation of acute chest pain.
Material And Methods:
Prospective study of patients with chest pain admitted in the CPU. After a clinical, electrocardiographic and laboratory evaluation with cardiac injury serum markers, patients were stratified in three risk groups, based on the likelihood of ACS of the American Heart Association. High probability patients were admitted to the Coronary Unit (CU) for treatment. Moderate probability patients remained in the CPU for further evaluation and low probability patients were discharged with telephonic follow-up.
Results:
Of 407 patients, 35, 30 and 35% were stratified as high, intermediate and low probability ACS, respectively. Among patients admitted with high probability, 73% had a confirmed ACS diagnosis. Among intermediate probability patients, 86% were discharged after an evaluation in the CPU without adverse events in the follow-up.
Conclusion:
Structured risk evaluation approach in a CPU improves the management of acute chest pain, identifying high probability patients for fast admission and start of treatment in a CU and allowing safe discharge of low probability ones.
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