La. Stat. tit. 13 § 4451
In all cases of appeal to any of the appellate courts, if the judgment appealed from be affirmed, the party in whose favor it is rendered on return of execution in the lower court that no property has been found, or not enough to satisfy the judgment and execution, after due demand on both parties, or their attorneys or legal representatives, may obtain a decree against the surety on the appeal bond, or his legal representative, for the amount of the judgment or any unsatisfied balance thereof, on motion, after ten days' notice. This motion shall be tried summarily and without the intervention of a jury, unless the surety or his legal representative shall allege, under oath, that the signature to the bond, purporting to be that of the surety, is not genuine, or that judgment has been satisfied.
La. R.S. § 13:4451