BET 2: should ST elevation be measured at the J point or 60 ms later?

Area of Science:

• Cardiology
• Emergency Medicine
• Diagnostic Accuracy

Background:

• Acute coronary syndromes (ACS) require timely diagnosis and intervention.
• Accurate identification of acute coronary occlusion is crucial for guiding reperfusion therapy.
• Electrocardiogram (ECG) ST-segment elevation measurement timing is a key diagnostic parameter.

Purpose of the Study:

• To evaluate if measuring ST elevation at the J point or 60 milliseconds after the J point improves the identification of acute coronary occlusion in emergency department patients with suspected ACS.
• To inform clinical practice guidelines regarding ECG interpretation for acute coronary occlusion.

Main Methods:

• A shortcut systematic review was conducted.
• Included three directly relevant studies.
• Tabulated study details: author, date, country, patient group, study type, outcomes, results, and weaknesses.

Main Results:

• The reviewed evidence does not support a change from measuring ST elevation at the J point.
• Current international guidelines advocate for measurement at the J point.
• Limited evidence exists for alternative measurement timings.

Conclusions:

• The current evidence does not justify shifting from measuring ST elevation at the J point for suspected acute coronary syndromes.
• Further research is necessary to definitively assess the utility of measuring ST elevation 60ms after the J point.