Absolute Small Voltage & Its Commonest Cause
Report:
Sinus rhythm 77/min
Absolute small voltage
Anterior infarction, age indeterminate
Comment:
This patient, too, had history of a remote infarction; like the previous case, he too could have a ventricular aneurysm. He was asymptomatic and there was no need to perform angiography or any other test to define the putative aneurysm by its dyskinesia, paradoxical expansion, etc. He is here to exemplify the commonest cause of small voltage (QRS < 5mm in frontal, < 10mm in chest leads): multiple or large infarcts.
Small voltage confined to the frontal leads does not have great (or any) clinical significance; absolute small voltage does. In patients with heart failure it is a marker of disease severity and adverse outcome at 1 year80.
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