Management of Non-STEMI and suspected Acute Coronary Syndrome
Jonas Eichhöfer1, Cara Hendry, Douglas Fraser
1Consultant Cardiologist Manchester Heart Centre Manchester Royal Infirmary Oxford Road Manchester M13 9WL United Kingdom.
Insights
Patients with acute coronary syndrome (ACS) and high-risk features need prompt coronary angiography within 72 hours. For lower-risk cases, non-invasive ischemia testing is advised before discharge.
Area of Science:
- Cardiology
- Emergency Medicine
Background:
- Patients with acute coronary syndrome (ACS) face a high risk of recurrent ischemic events.
- Prompt risk stratification and intervention are crucial for improving outcomes in ACS patients.
Purpose of the Study:
- To outline diagnostic and management strategies for patients presenting with suspected acute coronary syndrome (ACS).
- To define criteria for urgent coronary angiography and recommend non-invasive testing for lower-risk individuals.
Main Methods:
- Review of clinical guidelines and evidence for ACS management.
- Identification of high-risk features necessitating immediate coronary angiography.
- Recommendation for non-invasive myocardial ischemia testing in stable ACS patients.
Main Results:
- Coronary angiography within 72 hours is indicated for ACS patients with ischemic chest pain, elevated troponin, dynamic ECG changes, or other high-risk features.
- Emergency coronary angiography is required for patients with ongoing chest pain, ECG changes, ventricular arrhythmias, or hemodynamic compromise.
- Non-invasive ischemia testing is recommended before discharge for ACS patients without high-risk features.
- In patients with renal impairment and elevated troponin, serial troponin measurements and additional cardiac markers (CK, CK-MB) aid in diagnosing acute cardiac damage.
Conclusions:
- Timely coronary angiography is essential for high-risk ACS patients.
- Non-invasive testing plays a key role in managing lower-risk ACS.
- Careful assessment of cardiac markers is vital in specific patient populations, including those with renal impairment.
Abstract:
1. Patients presenting with ACS are at high risk of subsequent events and if ischaemic sounding chest pain is associated with either a raised troponin, dynamic ECG changes or other high risk features, inpatient coronary angiography should be arranged within 72 hours. 2. Patients with either ongoing chest pain and ECG changes despite medical treatment, ventricular arrythmias, or cardiogenic shock / haemodynamic compromise require emergency coronary angiography. 3. For patients with suspected ACS but no high risk features (Table 4) a non invasive test for myocardial ischaemia prior to discharge is recommended 4. In patients with renal impairment (creatinine .220) and chronically elevated troponin in whom an acute coronary syndrome is suspected additional cardiac markers such as CK or CK-MB as well as consecutive troponin measurements on admission and 12 hours are helpful to identify whether the patient sustained acute cardiac damage.
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