background: this study was conducted to evaluate variations in heart rate and to determine the occurrence of oculocardiac reflex (ocr) during laser in situ keratomileusis (lasik). methods: this descriptive, prospective study was designed to observe the effect of suction ring and ablation stages during lasik procedure on the heart rate. the ecg was taken before and during lasik operation on the ...

The present study was conducted to observe the effect of graded mechanical stimuli on occurrence of oculocardiac reflex (OCR). The experiments were carried out in twenty albino rabbits of either sex weighing between 1-2 kg. Changes in heart rate and/or cardiac rhythm (oculocardiac reflex) were studied by applying traction with progressively increasing weights to medial rectus muscle. Mean thres...

Purpose To review the physiology, presentation and management of the oculocardiac reflex (OCR) by describing a case of the OCR associated with an orbital foreign body and complete ocular prolapse through a large orbital floor fracture in a 40-year-old male following a motor vehicle accident. Observations The patient demonstrated marked bradycardia and hypotension necessitating intubation and ...

BACKGROUND Emergence agitation, vomiting, and oculocardiac reflex (OCR) in children undergoing strabismus surgery under general anesthesia are common problems. The purpose of this study was to determine whether the effect of analgesia can reduce the incidence of these problems. We compared the effects of sub-Tenon's injection versus intravenous (IV) and rectal paracetamol in this surgery. MET...

purpose: oculocardiac reflex (ocr) is a frequent event during strabismus surgery. the aim of this study is to compare the preventive effect of intravenous lidocaine and hyoscine on ocr.methods: this prospective, randomized clinical trial was performed on 75 patients (5-63 years old) underwent strabismus surgery. patients divided randomly into three groups. intravenous hyoscine (0.2 mg/kg), lido...

The oculocardiac reflex (OCR) is a well–described cardiac depressor reflex that may result in significant cardiac rate or rhythm changes, sinus and junctional bradycardia, heart block or asystole. It is also known by the eponym Aschner-Dagnini Reflex, being independently reported in 1908 by both Guiseppe Dagnini and later Bernard Aschner.1,2 The OCR is classically depicted as being precipitated...

purpose: to evaluate the efficacy of sub-tenon block (preemptive analgesia) following general anesthesia and before the beginning of scleral buckling and cryopexy in retinal detachment (rd) surgery on decreasing intra- and post-operative complications. methods: sixty eight patients scheduled for rd surgical repair with asa (american society of anesthesiologists) class і or ii were enrolled in t...

Background In this prospective, non-randomized study, we tested the hypothesis if oculocardiac reflex (OCR) can be used as a predictor of postoperative nausea and vomiting following strabismus surgery in children. Methods 88 children aged between 2 and 16 years undergoing strabismus surgery were enrolled in the study between 2009 and 2011. All anaesthetic drugs were given in a specific sequence...

Background: OCR commonly occurs during strabismus surgery, producing bradycardia, arrhythmias and even cardiac arrest after manipulation of orbital structures. Ketamine is NMDA receptor antagonist acts as an analgesic. Aim: To determine the effect ketamine premedication on prevention surgery. Study design: Randomized control trial Methodology: 60 patients were randomly divided into two groups i...

OBJECTIVE Dexmedetomidine is known to reduce the incidence of emergence agitation, which is a common complication after inhalational anesthesia like sevoflurane or desflurane in children. However, the dose of dexmedetomidine used for this purpose is reported variously and the most effective dose is not known. In this study, we tried to find the most effective dose of dexmedetomidine to reduce t...