ST-segment deviation pattern of takotsubo cardiomyopathy similar to acute pericarditis: diffuse ST-segment elevation

Area of Science:

• Cardiology
• Electrocardiography
• Internal Medicine

Background:

• Takotsubo cardiomyopathy (TTC) and acute pericarditis (AP) can present with similar electrocardiogram (ECG) findings.
• The precise similarities and differences in ST- and PR-segment deviations between TTC and AP require further definition.

Purpose of the Study:

• To compare ECG parameters, specifically ST- and PR-segment deviations, between patients with TTC and AP.
• To identify distinct ECG characteristics that may differentiate these two cardiac conditions.

Main Methods:

• Retrospective analysis of admission ECGs from eight patients with TTC and eight patients with AP.
• Comparison of ST-segment and PR-segment deviation patterns, as well as T wave magnitude in precordial leads.

Main Results:

• No significant differences were observed in ST- and PR-segment deviation patterns between TTC and AP groups.
• Significant differences were found in the maximal T wave magnitude in precordial leads.
• Consistent findings in both groups included ST-segment depression in lead aVR and absence of ST-segment elevation in lead V1.

Conclusions:

• The ST- and PR-segment deviation patterns in TTC are similar to those observed in AP.
• These ECG patterns suggest circumferential subepicardial ischemia in TTC during the acute phase.
• ECG findings like diffuse ST-segment elevations, reciprocal changes in aVR/V1, and PR-segment abnormalities are common in both conditions.