March 1, 1994HeartOpen Access

QT interval dispersion in chronic heart failure and left ventricular hypertrophy: relation to autonomic nervous system and Holter tape abnormalities.

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Why the study?

Does QT dispersion correlate with ventricular arrhythmias in patients with left ventricular hypertrophy or chronic heart failure?

Population

49 subjects: patients with left ventricular hypertrophy and normal systolic function, patients with chronic…

Design

Case-control

Authors

PDPatrick DaveyNorthampton General Hospital NHS Trust JBJ. BatemanBrigham Young University IMI. P. MulliganJohn Radcliffe Hospital

Discussion

Member takes

Implication

QT dispersion increase in LVH lacks link to ventricular arrhythmias; leaves open its prognostic utility and should not yet change practice.

Structured PICO

Does QT dispersion correlate with ventricular arrhythmias in patients with left ventricular hypertrophy or chronic heart failure?

Population

49 subjects: patients with left ventricular hypertrophy and normal systolic function (n=14), patients with chronic heart failure (n=18), and matched controls (n=17).

Comparator

Matched controls (n=17)

Outcome

QT dispersion (difference between maximum and minimum QT values from 12 lead ECG) and its relation to ventricular arrhythmias on 24 hour Holter monitoringsurrogate

Although QT dispersion is abnormal in left ventricular hypertrophy and heart failure, it does not appear to reflect arrhythmic risk.

Cite This Study

Davey et al. (1994) studied this question.

synapsesocial.com/papers/69fc052d3a0f4cc134c8eeae https://doi.org/10.1136/hrt.71.3.268

Topics

Heart failure HFrEF treatment

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Implication

QT dispersion increase in LVH lacks link to ventricular arrhythmias; leaves open its prognostic utility and should not yet change practice.

QT interval dispersion in chronic heart failure and left ventricular hypertrophy: relation to autonomic nervous system and Holter tape abnormalities.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Topics

QT interval dispersion in chronic heart failure and left ventricular hypertrophy: relation to autonomic nervous system and Holter tape abnormalities.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

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Topics

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