DM1 Pt2-4 Suggested Premed Combos for ASA status Flashcards
What are suitable premedication combinations for ASA 1 or 2 cats?
Acepromazine or dexmedetomidine combined with an opioid, depending on cardiovascular health and practice protocol.
How does sedation with acepromazine compare to dexmedetomidine?
Acepromazine provides less profound sedation than dexmedetomidine, which offers dose-dependent, stronger sedation.
What is the main cardiovascular effect of acepromazine?
It causes vasodilation, which may lead to hypotension, especially in animals with cardiovascular disease or shock.
What is the primary advantage of dexmedetomidine over acepromazine?
Dexmedetomidine has stronger drug-sparing effects and is reversible with atipamezole, unlike acepromazine.
What is a suitable premedication combination for ASA 3 cats?
Acepromazine with an opioid, or ketamine with midazolam for more cardiovascular stability.
What premedication combination is recommended for ASA 4 cats?
Ketamine with midazolam or midazolam alone IV, with possible addition of fentanyl for better sedation and stability.
What is a suggested premedication approach for ASA 5 cats?
Midazolam alone for sedation, combined with an opioid around induction, or using a co-induction technique with low doses of propofol or alfaxalone.
What should be considered when timing premedication administration?
Dexmedetomidine requires 15-20 minutes IM, while acepromazine takes 30-35 minutes IM to achieve peak effect.
Why should the time and dose of premedication be recorded?
It informs the vet and nurse about expected sedation effects, drug sparing, and cardiovascular changes around the time of anaesthesia.
