Neisseria Infections: Conjunctivitis and Meningitis

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What is the primary concern when using probenecid with antibiotics?

Higher levels of antibiotic accumulation, potentially leading to toxicity (correct)

Reduced bioavailability of the antibiotic

Enhanced antibacterial activity

Increased risk of antibiotic resistance

What is the most common cause of hyperacute bacterial conjunctivitis in neonates?

Staphylococcus aureus

Haemophilus influenzae

Chlamydia

Neisseria gonorrhea (correct)

What is the characteristic shape of Moraxella bacteria?

Rod shape (correct)

Cocci

Bacilli

Spiral shape

What is the first line of therapy for hyperacute bacterial conjunctivitis?

Ceftriaxone Signup and view all the answers

What is the characteristic feature of a Streptococcus pneumoniae corneal ulcer?

A gray-yellow, disc-shaped ulcer with hypopyon Signup and view all the answers

What is the recommended treatment for recurrent corneal erosions?

Doxycycline to inhibit metalloproteinases Signup and view all the answers

What is the most common bacteriological agent causing acquired dacryocystitis in children?

Staphylococcus Signup and view all the answers

What is the DOC for treating toxoplasmosis?

Pyrimethamine and sulfadiazine Signup and view all the answers

What is the risk factor for bacterial endophthalmitis?

Poor aseptic technique in intraocular surgery Signup and view all the answers

What is the primary mechanism of action of Vancomycin in treating bacterial endophthalmitis?

Inhibition of bacterial cell wall synthesis Signup and view all the answers

What is the primary concern when using Vancomycin for prolonged periods of time?

Nephrotoxicity and ototoxicity Signup and view all the answers

What is the primary indication for using Vancomycin in ocular surface infections?

Only reserved for severe cases in which less toxic agents have been ineffective Signup and view all the answers

What is the primary advantage of Amikacin in treating bacterial endophthalmitis?

Tolerance to many aminoglycoside-inactivating enzymes Signup and view all the answers

What is the primary contraindication for using Vancomycin in patients with bacterial endophthalmitis?

All of the above Signup and view all the answers

What is the primary mechanism of action of dexamethasone in reducing ocular inflammation?

Suppressing the host's immune response Signup and view all the answers

What is the most common vector responsible for the transmission of chlamydial conjunctivitis?

Flies Signup and view all the answers

In what stage of trachoma disease do papillary reactions obscure follicular reactions and follicles mature?

Stage II Signup and view all the answers

What is the primary concern in using dexamethasone in the treatment of bacterial keratitis?

Toxic keratitis Signup and view all the answers

In which population group is trachoma disease most commonly found?

Underprivileged population Signup and view all the answers

What is the primary concern when using tetracycline in pregnant women?

Risk of teratogenic effects Signup and view all the answers

What is the main difference between bacterial keratitis and sterile keratitis?

Speed of corneal damage Signup and view all the answers

What is the recommended oral antibiotic for the treatment of Chlamydial infections in children under 12?

Azithromycin Signup and view all the answers

What is the primary cause of Staphylococcus aureus corneal ulcers?

Coagulase production Signup and view all the answers

What is the main complication of conjunctival scarring in stage IV of ocular Chlamydial infection?

Entropion and trichiasis Signup and view all the answers

What is the primary indication for using Polytrim in ocular infections?

MRSA infections Signup and view all the answers

Which of the following fluoroquinolones is less active against gram-positive organisms?

Ocuflox 0.3% Signup and view all the answers

What is the primary mechanism of action of Aminoglycosides in ocular infections?

Binds to 30s subunits leading to altered cell membrane permeability Signup and view all the answers

Which of the following Aminoglycosides is ineffective against Pseudomonas infections?

Neomycin Signup and view all the answers

What is the primary concern when using Gentamycin for prolonged periods of time in ocular infections?

Corneal toxicity Signup and view all the answers

Which of the following fluoroquinolones is used aggressively for 24 hours and then tapered in ocular infections?

Quixin 0.5% Signup and view all the answers

What is the primary indication for using Besivance 0.6% in ocular infections?

Gram-positive and gram-negative infections Signup and view all the answers

What is the primary advantage of using Quixin 0.5% in ocular infections?

Broader spectrum of activity Signup and view all the answers

Which of the following fluoroquinolones is used as a first-line therapy for suspected Haemophilus infections in ocular infections?