
- Bladder rupture by cystocentesis is rare, while anesthesia death in patients with urethral obstruction is common. Goal is to lower the potassium level.
- The most common ECG abnormalities are due to hyperkalemia (ECG abnormalities: bradycardia, 1st degree AV block, dropped P waves, spiked T waves) need to be corrected prior to heavy sedation or general anesthesia.
- If the patient is "shocky," anesthesia is contraindicated. Correct shock prior to induction. Propofol should be administered slowly to effect to minimize adverse cardiovascular effects. Bradycardia may develop after rapid administration.
- Perform a complete physical examination and pre-anesthetic blood work prior to any pre-anesthetic or anesthetic drug administration.
- Pre-anesthesia blood work includes a CBC with differential and Internal Organ Function Screen.
- Maximum dose of Butorphanol is 5 mg. Additional amounts of Butorphanol at a pre-anesthetic dose may be given every 1-2 hrs as needed for post surgical pain control.
- Premedications administered SQ or IM may need to be diluted before administration to improve drug uptake. Minimum total volume administered should be 0.5-3 ml depending on patient size. Dilute with sterile water to final desired volume.
- Allow 30 minutes for premeds to take effect prior to induction of general anesthesia.
- Assess cardiovascular parameters after premeds have taken effect and prior to induction.
- Assess depth of immobilization; some patients can be intubated without further induction agents.
- These Pets generally require much lower doses of both induction agents and general anesthetics than healthy Pets. Error on the side of caution.
- If premeds given > 3 hrs prior to induction, repeat premeds at 1/2 dose 30 minutes prior to induction.
- Sevoflurane concentration necessary to keep these patients in a general plane of anesthesia is usually significantly lower than a healthy Pet.
- If running Sevoflurane at 4% or above, look for system leaks, improper intubation, or inadequate oxygen flow rate.
- Antibiotics other than Cefazolin must be administered a minimum of 1 hr prior to anesthesia or following complete recovery.
- Critically ill patients may be slow to recover from anesthesia. Monitor and document TPR and other vitals frequently and provide supportive care as necessary.