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British Journal of Anaesthesia, 2000, Vol. 85, No. 5 708-711
© 2000 The Board of Management and Trustees of the British Journal of Anaesthesia

Haemorrhage and risk factors associated with retrobulbar/peribulbar block: a prospective study in 1383 patients

H. Kallio, M. Paloheimo and E.-L. Maunuksela

Department of Anaesthesia, Helsinki University Central Hospital, Helsinki University Eye Hospital, PO Box 220, FIN-00029 Helsinki, Finland

Patients undergoing intraocular surgery are elderly and may have disease or be receiving medication which increases the risk of haemorrhage. We interviewed 1383 consecutive patients scheduled for eye surgery requiring retrobulbar/peribulbar block about their use of non- steroidal anti-inflammatory drugs, oral steroids and warfarin. A history of diabetes mellitus and globe axial length was noted. Medial peribulbar and inferolateral retrobulbar blocks were performed by three specialists and six doctors in training. The ensuing haemorrhages were graded as follows: 1=spot ecchymosis; 2=lid ecchymosis involving half of the lid surface area or less; 3=lid ecchymosis all around the eye, no increase in intraocular pressure; 4=retrobulbar haemorrhage with increased intraocular pressure. Acetylsalicylic acid was taken by 482 (35%) patients, non-steroidal anti-inflammatory drugs by 260 (19%) and warfarin by 76 (5.5%). Lid haemorrhages (grades 1–3) were observed in 55 patients (4.0%); in 33 of these patients the haemorrhages were spotlike (grade 1). No grade 4 haemorrhages occurred. The preoperative use of acetylsalicylic acid, non-steroidal anti-inflammatory drugs or warfarin, whether or not they had been discontinued, did not predispose to haemorrhage associated with retrobulbar/peribulbar block.

Br J Anaesth 2000; 85: 708–11


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