Anesthetics

Question 1

commonly used to sedate, anesthetize, or euthanize fish.

Answer 1

Tricaine methanesulfonate (MS-222) 
*buffered with baking soda (sodium bicarbonate) at a ratio of 2 parts baking soda to 1 part MS-222.

Question 2

popular
in effective immobilization of fish; however, there was concern about analgesia, prolonged recovery, and a narrow margin of safety, especially at higher concentrations.

Answer 2

Eugenol and clove oil

used both MS 222 and eugeno results to:
hypoxemia
hypercapnea
resp acidosis
hyper gly in red pacu

Question 3

Increasingly, surgery is an option for management of some medical problems in pet or exhibit fish, including

Answer 3

neoplastic disease,
failure to ovulate (ie, “egg bound” fish), and
gas bladder repair for buoyancy problems.

Question 4

Fish skin does not have the subcutaneous tissue that provides flexibility to domesticated animal tissue; therefore, wounds are not usually treated by surgical closure but instead allowed to heal by second intention
t/f

Answer 4

true

Question 5

should be monitored in the anesthetic solution

Answer 5

dissolved oxygen, ammonia, and pH

Question 6

works well to close fish skin

Answer 6

• simple interrupted suture pattern
• Monofilament material
• and a needle with a cutting edge
• Absorbable sutures,not recommended persist (>1 yr in some cases

Question 7

Skin sutures should be removed when

Answer 7

• site has healed, generally at 3–4 wk

* Surgical staples have been used successfully in fish.

Question 8

postoperative antibiotics

Answer 8

• enrofloxacin
• via IC injection at a dosage of 5 mg/kg
• to non-food fish.

Question 9

for postoperative pain control in non-food fish

Answer 9

• Butorphanolgiven at 0.1–0.4 mg/kg, IM

* meloxicamat 0.15 mg/kg, IM

Question 10

strongly recommended during the recovery and healing periods

Answer 10

Increasing the salinity in freshwater systems to 1–3 ppt (g/L

Question 11

warranted in some shipments, especially recently imported marine specimens.

Answer 11

Prophylactic use of antibiotics

Question 12

Goldfish commonly have significant monogenean infestations, and treatment with

Answer 12

formalin orpraziquantelmay be appropriate

Question 13

Koi should be quarantined for a minimum of

Answer 13

30 days at a temperature of 75°F (24°C).

Question 14

cannot be detected with nonlethal tests,

Answer 14

mycobacteria

viruses, microsporidia, and myxozoans.

Question 15

cannot be detected with nonlethal tests,

*usually detectable using necropsy techniques if quarantined animals that die are thoroughly examined.

Answer 15

mycobacteria

viruses, microsporidia, and myxozoans.