Kosin Med J.  2018 Dec;33(3):328-336. 10.7180/kmj.2018.33.3.328.

The association between T wave inversion and apical hypertrophic cardiomyopathy

• Chae CB
• Ha JH
• Kim JH
• Lee JJ
• Choi HI
• Park KB
• Kim JH
• Choi JH

• KMID: 2442543
• DOI: http://doi.org/10.7180/kmj.2018.33.3.328

Abstract

OBJECTIVES
Electrocardiograhy (ECG) is the first step in hypertrophic cardiomyopathy (HCMP) diagnosis. For various reasons, the T wave inversion (TWI) and ECG change with time and HCMP is not easy to diagnosis. The aim of this retrospective study was to investigate the association between TWI on ECG and apical HCMP.
METHODS
A total of 4,730 ECGs presenting TWI from January 2011 to March 2013 in Pusan National University Hospital were enrolled. 133 patients who were examined by both echocardiography and coronary angiogram were analyzed. Patients were divided into two groups: Group A (TWI ≥ 10 mm) and Group B (5 mm ≤ TWI < 10 mm). HCMP is defined by a wall thickness ≥ 15mm in one or more LV myocardial segments. Apical HCMP is defined to be hypertrophy that is confined to LV apex. The patients who had ECGs with at least one month interval were divided 3 groups: Normal T wave, Abnormal T wave, and Persistent TWI. The prevalence of Apical HCMP and coronary artery disease (CAD) was reviewed among the three groups.
RESULTS
In this study there were a total 133 patients, with patients divided into Group A which had 15 patients and Group B which had 118 patients. Among the 23 patients with apical HCMP, three patients were Group A and twenty patients were Group B (P = 0.769). Regarding constancy of TWI, persistent TWI group was higher in apical HCMP than in other groups (P = 0.038). CAD had no difference between groups (P = 0.889).
CONCLUSIONS
T wave negativity was not associated with incidence of apical HCMP. However, apical HCMP was diagnosed more frequently in patients with persistent TWI. Further follow up echocardiographic study is needed to evaluate the progression of apical HCMP in patients with TWI.

Keyword

Coronary artery disease; Echocardiography; Electrocardiography; Hypertrophic cardiomyopathy; T wave inversion

MeSH Terms

Busan
Cardiomyopathy, Hypertrophic*
Coronary Artery Disease
Diagnosis
Echocardiography
Electrocardiography
Follow-Up Studies
Humans
Hypertrophy
Incidence
Prevalence
Retrospective Studies

Figure

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  Fig. 1 Persistent TWI

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