Why the study?
Does left ventricular systolic and diastolic asynchrony occur in patients with systolic heart failure and narrow QRS complexes compared to normal controls?
Does left ventricular systolic and diastolic asynchrony occur in patients with systolic heart failure and narrow QRS complexes compared to normal controls?
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Left ventricular systolic and diastolic mechanical asynchrony is common in patients with systolic heart failure and narrow QRS complexes, suggesting that echocardiographic assessment of intraventricular synchronicity may be more important than QRS duration for considering cardiac resynchronization therapy.
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Chinami Ogata (2002) studied this question.
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