AHS 307 Otic Drugs

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AHS 307 Otic Drugs - Quiz


Questions and Answers
  • 1. 

    What are some clinical signs of Otitis Externa?

    • A.

      Head shaking

    • B.

      Hearing loss

    • C.

      Ear scratching

    • D.

      Vomitting

    • E.

      Diarrhea

    • F.

      Discharge from the ear

    • G.

      Ocular discharge

    Correct Answer(s)
    A. Head shaking
    C. Ear scratching
    F. Discharge from the ear
    Explanation
    The clinical signs of Otitis Externa include head shaking, ear scratching, and discharge from the ear. These symptoms are commonly observed in animals with ear infections. Head shaking and ear scratching are indicative of discomfort and irritation in the ear, while discharge from the ear can be a sign of infection or inflammation. Hearing loss, vomiting, diarrhea, and ocular discharge are not typically associated with Otitis Externa and may indicate other health issues.

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  • 2. 

    Otitis Media is inflammation of the pinna and external auditory canal.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Otitis Media is inflammation of the middle ear

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  • 3. 

    Otitis Interna is:

    • A.

      An ear infection

    • B.

      Inflammation of the middle ear

    • C.

      Inflammation of the pinna and external auditory canal

    Correct Answer
    A. An ear infection
    Explanation
    Otitis Interna refers to an ear infection that affects the inner ear. This condition involves the inflammation of the inner ear, which can cause symptoms such as dizziness, hearing loss, and ear pain. It is important to distinguish Otitis Interna from other types of ear infections, as it specifically refers to an infection in the inner ear, rather than the middle ear or external auditory canal.

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  • 4. 

    What are some factors that predispose animals to developing otitis externa?

    • A.

      Long pendulous ears

    • B.

      Narrowed ear canals

    • C.

      Excessive hair in the external ear canal

    • D.

      Frequent swimming or bathing

    • E.

      Excessive drying of the ear

    • F.

      Iatrogenic factors

    • G.

      Polyps in ear

    • H.

      Tumors in ear

    • I.

      Having Gagaosis

    Correct Answer(s)
    A. Long pendulous ears
    B. Narrowed ear canals
    C. Excessive hair in the external ear canal
    D. Frequent swimming or bathing
    F. Iatrogenic factors
    G. Polyps in ear
    H. Tumors in ear
    Explanation
    Animals with long pendulous ears are more prone to developing otitis externa because their ears provide a warm and moist environment that is conducive to the growth of bacteria and yeast. Narrowed ear canals can also increase the risk of otitis externa as they can trap debris and moisture, leading to infection. Excessive hair in the external ear canal can obstruct airflow and create a breeding ground for bacteria and yeast. Frequent swimming or bathing can introduce water into the ears, promoting bacterial growth. Iatrogenic factors, such as improper ear cleaning techniques, can also predispose animals to otitis externa. Polyps and tumors in the ear can obstruct airflow and create a favorable environment for infection.

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  • 5. 

    What are some factors that perpetuate otitis externa?

    • A.

      Yeast

    • B.

      Bacteria

    • C.

      Endocrine diseases

    • D.

      Atopy

    • E.

      Autoimmune disease

    • F.

      Keratinization disorders

    • G.

      Ophthalmic infections

    • H.

      Urinary tract infections

    • I.

      GI upset

    Correct Answer(s)
    A. Yeast
    B. Bacteria
    C. Endocrine diseases
    D. Atopy
    E. Autoimmune disease
    F. Keratinization disorders
    Explanation
    Otitis externa is a condition characterized by inflammation of the external ear canal. Several factors can perpetuate this condition, including yeast and bacterial infections. Endocrine diseases, such as hormonal imbalances, can also contribute to the development of otitis externa. Atopy, which refers to allergies or hypersensitivity reactions, and autoimmune diseases can further exacerbate the condition. Keratinization disorders, which affect the production of skin cells, can also play a role. Although ophthalmic infections, urinary tract infections, and gastrointestinal upset may cause discomfort, they are not directly related to perpetuating otitis externa.

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  • 6. 

    An antibiotic used to treat ear infections

    • A.

      Gentamicin

    • B.

      Ivermectin

    • C.

      Selamectin

    • D.

      Clotrimazole

    Correct Answer
    A. Gentamicin
    Explanation
    Gentamicin is an antibiotic commonly used to treat ear infections. It belongs to the aminoglycoside class of antibiotics and works by inhibiting the growth of bacteria. It is effective against a wide range of bacteria that can cause ear infections, including both gram-positive and gram-negative bacteria. Gentamicin is usually administered as eardrops or ointment directly into the ear canal. It helps to relieve symptoms such as pain, swelling, and discharge associated with ear infections.

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  • 7. 

    Thijostreptin is a gram-negative antibiotic that is usually combined with a glucocorticoid, antifuncal agent, and/or antiparasitic agent.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    It is a gram-positive antibiotic

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  • 8. 

    Which of these is a broad-spectrum antibiotic that is usually combined with a clucocorticoid and/or topical anesthetic?  It should not be used in food-producing animals 

    • A.

      Chloramphenicol

    • B.

      Enrofloxacin

    • C.

      Thiostreptin

    • D.

      Neomycin

    Correct Answer
    A. Chloramphenicol
    Explanation
    Chloramphenicol is a broad-spectrum antibiotic that is commonly combined with a glucocorticoid and/or topical anesthetic. It is important to note that chloramphenicol should not be used in food-producing animals.

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  • 9. 

    What are some topical antiparasitic otic drugs commonly used?

    • A.

      Thiabendazole

    • B.

      Pyrethrins

    • C.

      Milbemycin oxime

    • D.

      Ivermectin

    • E.

      Selamectin

    • F.

      Clotrimazole

    • G.

      Chloramphenicol

    • H.

      Nystatin

    Correct Answer(s)
    A. Thiabendazole
    B. Pyrethrins
    C. Milbemycin oxime
    D. Ivermectin
    E. Selamectin
    Explanation
    This list includes several topical antiparasitic otic drugs commonly used. These drugs are used to treat parasitic infections in the ear, such as ear mites. Thiabendazole, pyrethrins, milbemycin oxime, ivermectin, and selamectin are all effective in killing parasites in the ear. Clotrimazole, chloramphenicol, and nystatin are not commonly used as antiparasitic otic drugs, but they may have other uses in treating ear infections or fungal infections.

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  • 10. 

    The only liquid that is safe to use with ruptured tympanic membranes is sterile isotonic saline solution

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    All antiseptics should be avoided

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  • 11. 

    Otic drugs that cannot be used with ruptured tympanic membranes include:

    • A.

      Aminoglycosides

    • B.

      Chlorhexidine

    • C.

      Chloramphenicol

    • D.

      Iodine compounds

    Correct Answer(s)
    A. Aminoglycosides
    B. Chlorhexidine
    C. Chloramphenicol
    D. Iodine compounds
    Explanation
    A ruptured tympanic membrane is a perforation in the eardrum, which can lead to infection and damage to the middle ear. Aminoglycosides, chlorhexidine, chloramphenicol, and iodine compounds are all otic drugs that should not be used with ruptured tympanic membranes. Aminoglycosides are known to cause ototoxicity, which can worsen hearing loss. Chlorhexidine is an antiseptic that can be toxic to the middle ear. Chloramphenicol is an antibiotic that can cause allergic reactions and damage the inner ear. Iodine compounds can be irritating and potentially harmful to the middle ear. Therefore, these drugs should be avoided in cases of ruptured tympanic membranes to prevent further complications.

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  • 12. 

    It is not important to wash your hands after applying topical antifungal agents

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Washing hands after applying topical antifungal agents is important to prevent the spread of the fungus to other parts of the body or to other people. Fungal infections can be contagious and can easily spread through touch or contact. By washing hands after applying the antifungal agent, any residual fungus on the hands can be removed, reducing the risk of spreading the infection. Therefore, it is important to wash hands after applying topical antifungal agents.

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  • 13. 

    What can be used to treat Mallassezia?

    • A.

      Clotrimazole

    • B.

      Nystatin

    • C.

      Miconazole

    • D.

      Thiabendazole

    • E.

      All of the above

    Correct Answer
    E. All of the above
    Explanation
    All of the above options can be used to treat Mallassezia. Mallassezia is a type of yeast that can cause various skin infections, including dandruff, seborrheic dermatitis, and fungal acne. Clotrimazole, Nystatin, Miconazole, and Thiabendazole are all antifungal medications that are effective in treating Mallassezia infections. These medications work by inhibiting the growth and spread of the yeast, helping to alleviate the symptoms and promote healing. Therefore, all of the options mentioned can be used as treatment options for Mallassezia.

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  • 14. 

    What does clotrimazole work against?

    • A.

      Malassezia

    • B.

      Microsporum

    • C.

      Trichophyton

    • D.

      Epidermophyton

    • E.

      Candida

    • F.

      All of the above

    Correct Answer
    F. All of the above
    Explanation
    Clotrimazole is an antifungal medication that is effective against a variety of fungal infections. Malassezia, Microsporum, Trichophyton, Epidermophyton, and Candida are all types of fungi that can cause different types of infections, such as yeast infections, ringworm, and athlete's foot. Therefore, clotrimazole can be used to treat all of these fungal infections.

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  • 15. 

    How often should selamectin be used for ear mites?

    • A.

      Once a month

    • B.

      Twice a month

    • C.

      Once every 2 months

    • D.

      Once every 4 months

    Correct Answer
    A. Once a month
    Explanation
    Selamectin should be used once a month for ear mites. This is because ear mites are highly contagious and can quickly spread to other pets or humans in the household. Using selamectin monthly ensures that the mites are continuously killed and prevents reinfestation. It is important to follow the recommended frequency to effectively eliminate the ear mites and prevent any further complications or discomfort for the affected pet.

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  • 16. 

    Salicylic acid, acetic acid, boric acid, and tannic acid are examples of:

    • A.

      Topical otic dewaxing agents

    • B.

      Topical otic cleansing agents

    • C.

      Topical otic drying agents

    • D.

      Topical anti-inflammatories

    Correct Answer
    C. Topical otic drying agents
    Explanation
    Salicylic acid, acetic acid, boric acid, and tannic acid are examples of topical otic drying agents. These substances are commonly used in ear drops to help dry out excessive moisture in the ear canal, which can be a breeding ground for bacteria and fungi. By drying out the ear canal, these agents can help prevent infections and promote healing.

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