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Out-of-hospital cardiac arrest: always coronary angiography?
Andrea Rognoni1, Chiara Cavallino2, Marco Giovanni Mennuni1
1a Coronary Care Unit and Catheterization laboratory , A.O.U. Maggiore della Carità , Novara , Italy.
Insights
Early coronary angiography after out-of-hospital cardiac arrest (OHCA) improves survival, even without ST-elevation myocardial infarction (STEMI). Careful patient selection is crucial due to ethical considerations and potential futility in severe cases.
Area of Science:
- Critical care medicine
- Emergency cardiology
- Cardiac resuscitation
Background:
- Out-of-hospital cardiac arrest (OHCA) presents significant challenges in critical care and emergency cardiology.
- Survival rates after resuscitation are improving, leading to more patients admitted to hospitals.
- Long-term outcomes for OHCA survivors are comparable to those with ST-elevation myocardial infarction (STEMI).
Purpose of the Study:
- To clarify patient selection and risk stratification for coronary angiography after OHCA.
- To evaluate the benefits of immediate coronary intervention in OHCA patients.
- To address ethical considerations in treating OHCA patients with unfavorable clinical features.
Main Methods:
- Review of recent data on OHCA patient outcomes.
- Analysis of guidelines from the European Society of Cardiology (ESC) and American Heart Association (AHA) for STEMI patients with OHCA.
- Evaluation of the impact of coronary artery occlusion on outcomes.
Main Results:
- Immediate coronary intervention in OHCA is associated with better survival to discharge.
- Coronary artery occlusion is present in approximately 25% of OHCA patients without STEMI on ECG, explaining improved outcomes with early angiography.
- Ethical dilemmas arise in cases with comorbidities, advanced age, and severe lactic acidosis, where intervention benefits may be minimal.
Conclusions:
- Early coronary angiography and intervention can improve survival in OHCA patients.
- Risk stratification is essential to identify patients who will benefit most from coronary reperfusion therapy.
- Careful consideration of patient comorbidities and clinical status is necessary to guide treatment decisions and avoid futile interventions.
Introduction:
Out-of-hospital cardiac arrest (OHCA) remains one of the principle challenges in the setting of critical care medicine and emergency cardiology. Areas covered: Long-term survival rates even after successful resuscitation are variable but increasing in the recent years; due to the improvement of base and advanced cardiac life support techniques an increasing number of resuscitated patients are admitted to the hospital. Recent data suggested that patients surviving to hospital discharge after OHCA presented long-term outcome similar to patients with ST-elevation myocardial infarction. However, limited and incompletely clear data are available in the literature about the selection and risk stratification of patients to be subjected to coronary angiography, particularly in patients who have unfavorable clinical features in whom procedures may be futile and may affect public reporting of morality. Recently the ESC and AHA addressed appropriate treatments for ST-elevation myocardial infarction (STEMI) patients with out-of-hospital cardiac arrest. Expert commentary: Immediate coronary intervention in the setting of OHCA appears to be associated with better survival to discharge; the documentation of an occluded coronary artery in medium 25% of patients without signs of STEMI at ECG helps to explain why early angiography can improve outcomes. In the treatment of OHCA we can find some ethical issues; for example a combination of comorbidities with advanced age and prolonged ischemia indicated by severe lactic acidosis may signify a high enough chance of multiorgan failure or anoxic brain injury and where the benefit of coronary reperfusion therapy appears minimal.
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