Coronary angiographic findings after cardiac arrest in relation to ECG and comorbidity
R Lagedal1, L Elfwén2, M Jonsson3
1Department of Surgical Sciences/Anesthesiology and Intensive Care Medicine, Uppsala University, Sweden.
Insights
Evaluating electrocardiogram (ECG) patterns and comorbidities in cardiac arrest patients without ST-elevation is crucial. This helps identify those with high risk of coronary artery lesions needing revascularization.
Area of Science:
- Cardiology
- Emergency Medicine
- Diagnostic Imaging
Background:
- Specific electrocardiogram (ECG) patterns and comorbidities in cardiac arrest patients are not well-assessed regarding coronary angiographic findings.
- Identifying patients at high risk for acute coronary artery disease (CAD) as a cause of cardiac arrest requires further evidence.
Purpose of the Study:
- To describe coronary artery findings after cardiac arrest in relation to ECG and patient comorbidities.
- To assess the association between ECG patterns, comorbidities, and coronary artery disease in cardiac arrest survivors.
Main Methods:
- Retrospective study of out-of-hospital cardiac arrest patients who underwent coronary angiography within 28 days.
- Data collected included ECG on admission, comorbidities, percutaneous coronary intervention (PCI) attempts, and angiographic findings.
- Information was retrieved from national registries in Sweden.
Main Results:
- Among 1133 patients, 71% without ST-elevation had significant coronary stenosis.
- Patients with diabetes mellitus or initial shockable rhythm had higher rates of significant stenosis (84.8% and 71.5%, respectively).
- PCI attempts varied based on ECG findings, with higher rates in ST-depression or RBBB (right bundle branch block) groups.
Conclusions:
- ECG patterns and comorbidities in non-ST-elevation cardiac arrest patients are important for identifying high-risk individuals.
- Early identification of coronary artery lesions may benefit from revascularization strategies.
- Further research can refine risk stratification for cardiac arrest patients with suspected CAD.
Introduction:
The relations between specific ECG patterns and coronary angiographic findings in cardiac arrest patients with different comorbidities are not properly assessed. More evidence is needed to identify patients with the highest risk for acute coronary artery disease as a cause of the cardiac arrest. This study aims to describe the coronary artery findings after cardiac arrest in relation to ECG and comorbidity.
Method:
A retrospective study of out-of-hospital cardiac arrest patients, with coronary angiography performed within 28 days. ECG on admission, comorbidity, PCI attempts and angiographic findings are described. Data were retrieved from national registries in Sweden.
Results:
Among 1133 patients with available ECG and angiography information the mean age was 64 years. The rate of shockable rhythm was 79%. The total incidence of any significant stenosis in cardiac arrest patients without ST-elevation who underwent coronary angiography within 28 days was 71%. The incidence of any stenosis in patients with normal ECG was 62.1% and in patients with LBBB, 59.3%. In patients with ST-depression or RBBB, PCI attempts were made in 47.1% and 42.4% respectively, compared with 33.3% in patients with normal ECG. Among patients without ST-elevation, those with diabetes mellitus and those with initial shockable rhythm respectively, 84.8% and 71.5 had at least one significant stenosis.
Conclusion:
Our study suggests, that evaluation of ECG patterns and comorbidities in out-of-hospital cardiac arrest patients without ST-segment elevation may be important to identify those with a high risk of coronary artery lesions that could benefit from early revascularization.
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