title: Comparison of orbital muscle akinesia caused by rocuronium versus hyaluronidase mixed to the local anesthetic in single injection peribulbar block for cataract surgery.
abstract: BACKGROUND
  The aim of this study was to compare orbital muscle akinesia caused by rocuronium versus hyaluronidase when mixed with the local anesthetic in single-injection peribulbar anesthesia (PBA).
  
  
  METHODS
  Sixty patients were included in the study and subjected to cataract extraction using phacoemulsification technique with intraocular lens implantation. Group I received peribulbar block with 5 ml mixture of 30 IU/ml hyaluronidase and 2% lidocaine. Group II received peribulbar block with 5 ml mixture of rocuronium 5 mg and 2% lidocaine. The onset and duration of akinesia were assessed; the akinesia score at 2, 5, and 10 min was measured after injection. The need for supplementary injection was also recorded.
  
  
  CONCLUSIONS
  PBA using a mixture of rocuronium and lidocaine provides optimal globe akinesia and faster establishment of suitable conditions to start eye surgery and shortens the block onset time as compared with the addition of hyaluronidase to lidocaine.
authors.affiliation: Department of Anesthesia and Surgical Intensive Care, Mansoura University Hospital, Mansoura, Egypt.
authors.forename: Medhat M
authors.initials: MM
authors.lastname: Messeha
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Mansoura Ophthalmology Center, Mansoura University, Mansoura, Egypt.
authors.forename: Abd-Elmonem
authors.initials: AE
authors.lastname: Elhesy
keywords: Globe akinesia; hyaluronidase; peribulbar block; rocuronium