Management of Tachycardia with Chest Pain

Immediate Actions and Triage

The American Heart Association recommends obtaining and interpreting a 12-lead ECG within 10 minutes of presentation to identify ST-elevation myocardial infarction (STEMI), which requires immediate reperfusion therapy 1, 2
The American College of Cardiology suggests placing the patient on continuous cardiac monitoring with defibrillator immediately available 3, 4
The European Society of Cardiology recommends establishing intravenous access 5
The American Heart Association advises administering aspirin 75-500 mg (chewable or water-soluble for rapid absorption) unless contraindicated 6, 7, 3
The American College of Cardiology recommends activating Emergency Medical Services (EMS) immediately if presenting outside hospital setting, as EMS provides prehospital ECG, trained personnel for arrhythmia management, and shorter transport times 1, 2

The European Society of Cardiology suggests following STEMI guidelines immediately with decision for fibrinolytic therapy or primary percutaneous coronary intervention (PCI) within 10 minutes of ECG interpretation 6, 3, 2
The American Heart Association recommends not delaying reperfusion therapy 1, 2
The European Society of Cardiology advises initiating treatment for non-ST-elevation ACS (NSTE-ACS) including aspirin, low molecular weight heparin, beta-blocker, and nitrates 6, 3

The American College of Cardiology recommends measuring cardiac troponin T or I at presentation and repeat at 6-12 hours after symptom onset 6, 1, 9
The European Society of Cardiology suggests not discharging based on single negative troponin, as repeat measurement is mandatory 9

The American Heart Association recommends performing immediate synchronized cardioversion regardless of rhythm type in hemodynamically unstable patients 10
The European Society of Cardiology advises administering intravenous beta-blocker as first-line therapy for sinus tachycardia with ischemic changes 10

The European Society of Cardiology recommends urgent cardiology consultation and likely invasive coronary angiography for patients with high-risk features such as recurrent ischemia, elevated troponin levels, hemodynamic instability, major arrhythmias, diabetes mellitus, and early post-infarction unstable angina 6, 8

The American College of Cardiology suggests scheduling outpatient stress testing within 72 hours if not performed during ED evaluation for low-risk patients 9
The European Society of Cardiology recommends admitting intermediate-risk patients for observation with serial troponins and ECGs 6, 8
The American Heart Association advises admitting high-risk patients to monitored bed with cardiology consultation and proceeding to invasive coronary angiography based on clinical and angiographic features 6, 8