Electrocardiographic Criteria of Left Ventricular Hypertrophy

Introduction: Left ventricle hypertrophy (LVH) is an important risk factor for cardiovascular morbidity and mortality. It is characterized by a thickening of the walls of the left ventricle. The transthoracic echocardiogram is a very accurate method for LVH detection. However, the electrocardiogram (ECG) offers an alternative method in diagnosing LVH, besides being less expensive and easier to obtain. In this context, this study proposes an ECG based approach for left ventricle hypertrophy (LVH) classification. Methods: According to the literature, several indexes have so far been proposed that suggest specific changes in cardiac structure, however, generally speaking there is no consensus about the best criteria. This way, instead of considering only one LVH criterion, a score derived from electrocardiographic traces was employed which explores the complementarity of the best criteria through a fusion strategy. The best criteria are those which discriminate normal and LVH ECGs. Results: The experiments were performed in the Monica database with a group of fifty men. Half of the individuals had LVH diagnosed by calculating the left ventricular mass index measured by transthoracic echocardiography. The score fusion proposed achieved a sensitivity of 78.3% and specificity of 91.3%, outperforming all isolated LVH criteria. Discussion: Unlike the other methods, our score must be estimated within a computer because of its high complexity. Even with this limitation it is much less expensive than using the echocardiography.

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“…The results are consistent with the one from Table 3, except for the method proposed by Gubner and Ungerleider (1943).…”

Section: Resultssupporting

confidence: 90%

“…(R + S ) anyprecordiallear (Grant, 1957) 0.382 0.001 (R I + S III ) (Gubner and Ungerleider, 1943) 0.525 <0.0001…”

Section: Methods R P-valuementioning

confidence: 99%

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ECG-based Detection of Left Ventricle Hypertrophy

Zago

Andreão

Sarcinelli-Filho

2014

Proceedings of the 2nd International Congress on Cardiovascular Technologies

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“…The following electrocardiographic voltage indices for left ventricular mass were measured and expressed in mm: single lead voltages RaVL; RI; SIII; SV1 and RV5; combined lead voltages RI + SIII = Gubner-Ungerleider voltage 20 and SV1 + RV5 = Sokolow-Lyon voltage. 21 Voltages were measured to the nearest 0.1 mV.…”

Section: Electrocardiographymentioning

confidence: 99%

Relationship between left ventricular mass and blood pressure in treated hypertension

et al. 2002

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This study evaluated prospectively whether there is still a relationship between left ventricular mass and blood pressure once hypertension is treated and determined the relative importance of daytime vs night-time blood pressure, systolic vs diastolic blood pressure and office vs ambulatory blood pressure. A total of 649 patients (305 or 47% female) with essential hypertension, treated with antihypertensive drugs for at least 3 months, underwent office blood pressure measurement and both daytime and night-time ambulatory blood pressure measurement, electrocardiography and echocardiography. Correlations were made between blood pressure values and parameters of left ventricular mass. Electrocardiographic voltage criteria and even more so echocardiographic parameters correlate significantly albeit weakly (r р 0.28) with blood pressure in treated hypertension. Correlations are consistently higher when systolic blood pressure is considered. Overall, the best cor-

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“…To offer an excellent periodic cardiovascular diagnostic service to 2,000 "susceptible" males, sending all pertinent data to each participant's family physician. 6. To stimulate and develop the interest of all public health workers in New York State in heart disease problems and programs.…”

mentioning

confidence: 99%

Evaluation During the Development of a Public Health Program in Chronic Disease

James¹,

Hilleboe²

1955

Am J Public Health Nations Health

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Evaluation is presented here more as a scientifically critical point of view-which must be built into each program during its development-rather than as a special procedure to be performed periodically. As many of our current programs have not been so constructed, their successful evaluation demands rigid attention to the validity and reliability of the measures upon which conclusions about them are to be based.

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Electrocardiographic Criteria of Left Ventricular Hypertrophy

Cited by 179 publications

References 22 publications

ECG-based Detection of Left Ventricle Hypertrophy

ECG-based Detection of Left Ventricle Hypertrophy

Relationship between left ventricular mass and blood pressure in treated hypertension

Evaluation During the Development of a Public Health Program in Chronic Disease

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