General Anaesthesia Versus Local Anaesthesia For Ophthalmic Operations
Rafat Fathy Mansour;
Abstract
In this essay we discussed a detailed knowledge of the anatomy of the eye and orbit.
(lOP) is a dynamic pressure, ranges from (10-
22rnmHg), controlled by choroidal blood volume, aqueous and vitreous volumes, and external pressure. Most of anaesthetic drugs decrease (lOP), while only succinylcholine and
ketamine may elevate it. Laryngoscopy and endotracheal intubation also elevate (lOP).
Oculocardiac reflex is the most neuro-ophthalmic reflex that occur during ophthalmic anaesthesia, and should managed according to its severity. Other reflexes also discussed.
General ophthalmic anaesthesia has advantages of complete immobility of the eye during surgery, avoids sudden cough or sneeze, and provides ideal surgical field. Local eye medications may have systemic side effects should be known for anaesthesiologist.
Regional ophthalmic anaesthesia has advantages of that it may be performed as a day case, gives good akinesia, nausea and vomiting usually less, postoperative analgesia, and
cheaper than general anaesthesia. Pharmacology of local anaesthetic used and supplementation of sedation should be known. There are many techniques for providing regional ophthalmic anaesthesia. The most commonly used, are peribulbar and retrobulbar techniques. The most common complications of regional ophthalmic anaesthesia are globe penetration and perforation and retrobulbar haemorrhage.
(lOP) is a dynamic pressure, ranges from (10-
22rnmHg), controlled by choroidal blood volume, aqueous and vitreous volumes, and external pressure. Most of anaesthetic drugs decrease (lOP), while only succinylcholine and
ketamine may elevate it. Laryngoscopy and endotracheal intubation also elevate (lOP).
Oculocardiac reflex is the most neuro-ophthalmic reflex that occur during ophthalmic anaesthesia, and should managed according to its severity. Other reflexes also discussed.
General ophthalmic anaesthesia has advantages of complete immobility of the eye during surgery, avoids sudden cough or sneeze, and provides ideal surgical field. Local eye medications may have systemic side effects should be known for anaesthesiologist.
Regional ophthalmic anaesthesia has advantages of that it may be performed as a day case, gives good akinesia, nausea and vomiting usually less, postoperative analgesia, and
cheaper than general anaesthesia. Pharmacology of local anaesthetic used and supplementation of sedation should be known. There are many techniques for providing regional ophthalmic anaesthesia. The most commonly used, are peribulbar and retrobulbar techniques. The most common complications of regional ophthalmic anaesthesia are globe penetration and perforation and retrobulbar haemorrhage.
Other data
| Title | General Anaesthesia Versus Local Anaesthesia For Ophthalmic Operations | Other Titles | مقارنة بين التخدير العام والتخدير الموضعى فىجراحات العيون | Authors | Rafat Fathy Mansour | Issue Date | 2001 |
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