Final answer:
Butorphanol tartrate, an opioid prescribed for a dog with a collapsed trachea, commonly causes sedation as a side effect. Other options like hyperventilation, tachycardia, and polydipsia are not as typically associated with Butorphanol as sedation is.
Step-by-step explanation:
The client should be cautioned that a common side effect of Butorphanol tartrate, a medication prescribed for a Pomeranian with a collapsed trachea, is sedation. Butorphanol tartrate is an opioid analgesic that can provide relief from cough and discomfort in dogs with tracheal conditions. However, along with its therapeutic effects, it can cause various side effects.
Out of the options provided:
- Hyperventilation - This is not commonly associated with Butorphanol.
- Tachycardia - Butorphanol can occasionally cause an increase in heart rate, but it is not as common as sedation.
- Polydipsia - Increased thirst is not a typical side effect.
- Sedation - This is a well-recognized side effect of many opioid medications, including Butorphanol. It should be monitored as it can impact the animal's overall activity and responsiveness.
Care should be taken to observe the Pomeranian for any signs of excessive sedation, and the veterinarian should be contacted if there is concern.