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Published in: BMC Cardiovascular Disorders 1/2017

Open Access 01-12-2017 | Research article

Ventricular late potential in cardiac syndrome X compared to coronary artery disease

Author: Mohamed Faisal Lutfi

Published in: BMC Cardiovascular Disorders | Issue 1/2017

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Abstract

Background

Although ventricular late potential (VLP) was extensively studied in risk stratification of myocardial infarction (MI) patients, comparable researches evaluating presence of VLP in MI-free coronary artery disease (CAD) and cardiac syndrome X (CSX) subjects are scarce. This study aimed to compare presence of VLP between CSX and CAD patients.

Methods

Signal average ECG (SAECG) was performed to 49 patients with a history of typical cardiac pain before undergoing diagnostic coronary angiography (DCA) in Al-Shaab cardiac center, Khartoum, Sudan. QRS duration, duration of the terminal part of the QRS complex with amplitude less than 40 microvolts (LAS40) and the root mean square voltage of the terminal 40 milliseconds (RMS40) of the filtered QRS complex were identified for each patient. Presence of two or more of QRS duration > 120 ms, RMS40 > 38 ms and LAS40 < 20 μV was considered indicative of VLP. Associations between VLP and patients grouped according to DCA results were assessed using appropriate statistical tests.

Results

VLP was present in 11.11% (3.63%–24.66%) and 15.38% (2.66%–42.23%) of patients with CAD and CSX respectively. Presence of VLP was comparable in patients with CAD and CSX (OR = 0.69, 95% CI = 0.11–6.05, P = 0.692), even after controlling for the possible variations in gender, age, body mass index (BMI), hypertension and diabetes mellitus in the studied groups.

Conclusion

Presence of VLP is comparable among CSX and CAD patients.
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Metadata
Title
Ventricular late potential in cardiac syndrome X compared to coronary artery disease
Author
Mohamed Faisal Lutfi
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Cardiovascular Disorders / Issue 1/2017
Electronic ISSN: 1471-2261
DOI
https://doi.org/10.1186/s12872-017-0469-6

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