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Questions and Answers
What is the definition of anesthesia?
What is the definition of anesthesia?
- Reversible loss of feeling or sensation induced for surgery (correct)
- Complete loss of consciousness during surgery
- Temporary loss of pain sensation after surgery
- Irreversible loss of feeling or sensation
Who first used cocaine as a topical anesthetic for eye surgery?
Who first used cocaine as a topical anesthetic for eye surgery?
- Hermann Jakob Knapp
- Carl Koller (correct)
- Dr. N. N. Nadzirah Binti Zakaria
- None of the above
In which types of ocular surgeries is local anesthesia preferred?
In which types of ocular surgeries is local anesthesia preferred?
- Cataract surgery and glaucoma surgery only
- Vitreo-retinal surgery only
- Cataract surgery, glaucoma surgery, and refractive surgery among others (correct)
- Minor extraocular plastic surgery and keratoplasty only
What are the advantages of using local anesthesia?
What are the advantages of using local anesthesia?
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How do drugs used for local anesthesia act?
How do drugs used for local anesthesia act?
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What are the uses of topical anesthesia?
What are the uses of topical anesthesia?
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When is general anesthesia preferred over local anesthesia?
When is general anesthesia preferred over local anesthesia?
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Study Notes
Anesthesia Definition and History
- Anesthesia is a state of temporary induced loss of sensation or awareness
- Cocaine was first used as a topical anesthetic for eye surgery by Carl Koller in 1884
Types of Anesthesia
- Local anesthesia is preferred in ocular surgeries, such as cataract surgery, LASIK, and corneal transplantation
Advantages of Local Anesthesia
- Reduces risk of respiratory and cardiac complications
- Allows for faster recovery and discharge
- Minimizes post-operative nausea and vomiting
- Enables patients to recover quickly and have less pain
Mechanism of Action
- Local anesthetics act by blocking the sodium channels in neural membranes, preventing the transmission of nerve impulses
Topical Anesthesia Uses
- Used to numb the skin or mucous membranes before minor procedures
- Relieves pain and discomfort in minor procedures, such as suturing, biopsies, and cosmetic procedures
General Anesthesia
- Preferred over local anesthesia in complex or high-risk surgeries, such as open-heart surgery or neurosurgery
- Also preferred for surgeries requiring muscle relaxation, such as abdominal or thoracic surgery
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