Limitations
Our study is single centre and has relatively small numbers with both
prospective and retrospective aspects. Groups were not well matched by
demographics, and it remains possible that these differences in RACT
were influenced by confounding factors. Missing data on RA and LA
volumes prevented more conclusive data interpretation. Atrial flutter is
predominately diagnosed in male subjects and women were underrepresented
in our sample. Although no statistical sex difference was observed, this
should be interpreted with caution given the small sample size.