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Year : 2001  |  Volume : 8  |  Issue : 2  |  Page : 95-98

Arrhythmias: appraisal of symptoms by haemodynamic concepts

Department of Medicine, University of Ilorin, Ilorin, Nigeria

Correspondence Address:
M A Araoye
Department of Medicine, University of Ilorin, Ilorin
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Source of Support: None, Conflict of Interest: None

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Arryhthmias can afflict any heart, even in the absence of disease. Given that Cardiac Output (CO) is a product of heart rate and stroke volume, the end-result of brady- and tachy-arrhythmias is the same: low CO with symptoms of low-output state. In bradyarrhythmias, myocardial inotropy operates maximally but the product of stroke volume and slow heart rate yields a low CO. In tacharryhthmias, myocardial inotropy is redundant because the product of low stroke volume arising from low Diastolic Filling Time (DFT) and heart rate also yields a low CO. The hallmark of extrasystole is the duplex of symptoms: dizziness followed by palpitation.

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