Combine multaq with atenolol?

My mother has just been prescribed multaq in combination with 25 mg atenolol.  Three days - no problem so far.  But we've just finished reading through the warnings and beta blockers is on the list.  Has anyone else been taking these drugs together?

[allaflutter1213]

sometimes beta blockers are prescribed with antiarrthymics to reduce the occurence of atrial flutter, or to keep the heart rate low.
You didnt mention, but why were these meds prescribed?

[RAMHorn]

She has atrial fib episodes every week or so - over the past 6 months they are followed by several hours of arrythmia with 5-6 second pauses.  The doctors have been considering ablation (sp?) but are going this route for now.