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Published on: February 17, 2018
Clinical characteristics of tako-tsubo cardiomyopathy
Venkatesan Vidi1, Vinutha Rajesh, Premranjan P Singh
1Division of Internal Medicine, Lahey Clinic Medical Center, Burlington, Massachusetts, USA. Venki.Vidi@gmail.com
Insights
Tako-tsubo cardiomyopathy (TTC) is a heart condition often affecting postmenopausal women after stress. While it impacts left ventricular function, patients typically recover well with medical management.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Tako-tsubo cardiomyopathy (TTC) is increasingly diagnosed, particularly in Caucasian populations.
- The condition mimics myocardial infarction but lacks obstructive coronary artery disease.
Purpose of the Study:
- To evaluate the clinical features and outcomes of patients diagnosed with Tako-tsubo cardiomyopathy.
Main Methods:
- Retrospective analysis of 34 patients (32 women, 2 men) meeting TTC diagnostic criteria.
- Assessment of clinical presentation, cardiac biomarkers, electrocardiographic findings, and left ventricular function via echocardiography.
Main Results:
- Most patients presented with chest pain (74%) or dyspnea (59%), often following a stressful event (74%).
- Mean ejection fraction improved significantly from 28% at presentation to 51% at follow-up (p <0.0001).
- In-hospital mortality was low (6%), with an average hospital stay of 6.6 days.
Conclusions:
- Tako-tsubo cardiomyopathy is prevalent in postmenopausal women, frequently triggered by physical or emotional stress.
- The condition primarily affects the apical left ventricle and is associated with a favorable prognosis with appropriate management.
- The exact etiology of TTC remains undetermined.
Abstract:
Tako-tsubo cardiomyopathy (TTC) is increasingly diagnosed in the United States, especially in the Caucasian population. To evaluate the clinical features and outcome of patients with TTC, we evaluated 34 patients (32 women and 2 men) 22 to 88 years of age (mean 66 +/- 14) who fulfilled the following criteria: (1) akinesia or dyskinesia of the apical and/or midventricular segments of the left ventricle with regional wall motion abnormalities that extended beyond the distribution of a single epicardial vessel and (2) absence of obstructive coronary artery disease. Twenty-five patients (74%) presented with chest pain, 20 patients (59%) presented with dyspnea, and 8 patients (24%) presented with cardiogenic shock. Twenty-two patients (65%) had ST-segment elevation and 14 patients (41%) had T-wave inversion on presentation. Twenty-five patients (74%) reported a preceding stressful event. Cardiac biomarkers were often mildly increased, with a mean troponin I (peak) of 13.9 +/- 24. Mean +/- SD left ventricular ejection fractions were 28 +/- 10% at time of presentation and 51 +/- 14 at time of follow-up (p <0.0001). Two patients (6%) died during the hospital stay. Average duration of hospital stay was 6.6 +/- 6.2 days. In conclusion, TTC is common in postmenopausal women with preceding physical or emotional stress. It predominantly involves the apical portion of the left ventricle and patients with this condition have a favorable outcome with appropriate medical management. The precise cause remains unclear.
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