Feline Asthma Flovent Inhaler Protocol

Excellent workup. Confirming eosinophilic inflammation on BAL is definitive and sets us up for a targeted, multi-modal management plan. Your proposed approach is spot-on. Here is how I would structure it.

The goal is twofold: gain initial rapid control of inflammation, then transition to a safe, sustainable long-term plan.

Oral Steroid Bridge: We need to extinguish the fire before we can switch to maintenance. The inhaled steroid will take 1-2 weeks to reach full effect.

* Drug: Prednisolone (not prednisone) at 1-2 mg/kg PO daily.
* Duration: Start a slow taper after 7-10 days, aiming to discontinue it completely over 2-4 weeks as the fluticasone takes over. The patient's clinical response dictates the taper speed.

Long-Term Control (Inhaled Corticosteroid): This is the cornerstone of chronic management.

* Drug: Fluticasone propionate (Flovent HFA) is an excellent choice due to its high potency and low systemic absorption.
* Dosing: Start with the 110 mcg/puff formulation, delivering one puff into the AeroKat spacer BID. If control isn't achieved after a month, consider increasing to 220 mcg/puff BID. Client education on acclimatizing the cat to the mask and spacer is critical for compliance.

Rescue Therapy (Bronchodilator): For acute flare-ups only.

* Drug: Albuterol (ProAir HFA, Ventolin HFA).
* Use: One to two puffs into the spacer during an acute episode of coughing or wheezing. It's crucial the owner understands this is a rescue drug, not a controller. If they are using it more than twice a week, our long-term inflammatory control is inadequate and the fluticasone dose needs to be adjusted.

Environmental Modification: This is non-negotiable and as important as the medications.

* Eliminate all airborne irritants: smoke, scented candles, air fresheners, aerosols.
* Switch to a low-dust, unscented litter.
* Implement high-quality HEPA air filtration in the main rooms the cat occupies.
* Regularly clean bedding and vacuum with a HEPA-filter vacuum.

Monitoring:

* Schedule a recheck 2 weeks after initiation to assess clinical response and inhaler technique.
* The primary metric for success is a reduction in the frequency and severity of coughing episodes and improved resting respiratory rate (<30 breaths/min).
* Once stable on inhaled steroids, rechecks can be spaced to every 3-6 months.

This is a solid clinical plan. I'm looping in Dr. Voss to fine-tune the pharmacology.

Nadia, can you please confirm these starting doses, comment on any nuances between the different fluticasone/albuterol inhaler types (e.g., HFA vs. older MDIs), and add any warnings about albuterol overuse from a pharmacodynamic standpoint?

High confidence in this comprehensive approach.

Colleague, this is the standard of care for feline asthma and an excellent therapeutic plan. My focus will be on the pharmacological specifics to ensure we maximize efficacy and minimize side effects.

Here is a breakdown of the key pharmacological considerations for your protocol:

Controller Therapy: Fluticasone Propionate

* Dosing & Formulation: The most common starting point is the 110 mcg/puff metered-dose inhaler (MDI). Administer one puff into the AeroKat spacer, then allow the cat to breathe through the mask for 7-10 breaths, twice daily (q12h). The spacer is non-negotiable; without it, the vast majority of the drug impacts the oropharynx and is not inhaled.
* Pharmacokinetics: The key benefit is local action with minimal systemic absorption, avoiding the side effects of chronic oral steroids. Remind the owner that this is a controller, not a rescue drug. Full clinical effect will take 1-2 weeks, which is why the oral steroid bridge is critical.

Induction/Bridge Therapy: Oral Prednisolone

* Rationale: We use an oral steroid to gain rapid control of the airway inflammation while the inhaled fluticasone reaches therapeutic levels.
* Drug Choice: Crucially, use prednisolone, not prednisone. Cats have poor hepatic conversion of prednisone to its active metabolite, prednisolone, making the former a less reliable choice.
* Dosing Protocol: Start with an anti-inflammatory dose of 1-2 mg/kg PO q24h for 7-10 days. Once you see clinical improvement and the fluticasone has been on board for at least a week, you can begin a slow taper. I typically recommend decreasing the dose by 50% every 7 days, then transitioning to every-other-day dosing before discontinuing. The entire taper should take 2-3 weeks.

Rescue Therapy: Albuterol Sulfate

Mechanism & Use: This is a beta-2 agonist for rapid bronchodilation during an acute asthma attack. It does not* treat the underlying inflammation. Instruct the owner to use it for acute respiratory distress (wheezing, open-mouth breathing, severe tachypnea).
* Dosing: 1-2 puffs into the spacer for the cat to breathe for 7-10 breaths. The effect is seen within 5-10 minutes.
Monitoring Red Flag: The most important monitoring parameter here is the frequency of use*. If the owner needs to use the albuterol rescue inhaler more than twice a week, our control of the underlying inflammation is inadequate, and the fluticasone dose may need to be increased (e.g., to the 220 mcg MDI).

In summary, you're initiating a classic "step-down" approach. You're hitting the inflammation hard with systemic prednisolone, then transitioning to safer, local-acting inhaled fluticasone for long-term maintenance, with albuterol reserved only for emergencies. This plan effectively manages the disease while minimizing the risks of iatrogenic Cushing's from chronic oral steroid use.