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The Rodent Model of Nonarteritic Anterior Ischemic Optic Neuropathy (rNAION)
Published on: November 20, 2016
[What's new in ophthalmic anaesthesia?]
Henry U Weigt1, Christoph W Spraul, Manfred Weiss
1Klinik für Anästhesiologie, Universität Ulm. henry.weigt@gmx.de
Ophthalmic anesthesia has evolved with safer general and regional techniques. Careful drug selection is crucial to manage intraocular pressure and cardiovascular risks in elderly patients, minimizing complications like postoperative nausea and vomiting.
Area of Science:
- Anesthesiology
- Ophthalmology
Context:
- Recent advancements in ophthalmic anesthesia have introduced safer general and regional anesthesia techniques.
- Ophthalmic surgery patients are often elderly with comorbidities (ASA III-IV), increasing anesthetic risks.
- Life-threatening cardiovascular events and the need for interventions like hypertension and dysrhythmia management are common.
Purpose:
- To review current changes and considerations in ophthalmic anesthesia.
- To highlight the impact of anesthetic drugs on intraocular pressure (IOP) and pulsatile ocular blood flow (POBF).
- To discuss risk management strategies for patients on anticoagulants/antiplatelet agents and the prevention of postoperative nausea and vomiting (PONV).
Summary:
- General anesthesia offers controllability and efficient OR management, while regional anesthesia, particularly topical, is increasingly used for cataract surgery.
- Anesthetic choices impact IOP and POBF; specific drugs like remifentanil and the use of laryngeal masks can mitigate risks.
- Managing patients on anticoagulants requires balancing bleeding risks with thrombotic events. PONV prevention involves avoiding long-acting opioids and using antiemetics.
Impact:
- Improved patient safety and OR efficiency through optimized anesthetic management.
- Enhanced understanding of how anesthetic agents affect ocular hemodynamics, guiding clinical decisions.
- Strategies to reduce perioperative risks and postoperative complications like PONV in ophthalmic surgery patients.
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