RECOVER’s 2024 CPR updates reshape small animal code response

Veterinary CPR guidance has been overhauled for the first time in more than a decade, and the changes are now being translated into day-to-day clinical practice through continuing education and podcast discussions such as Clinician’s Brief’s conversation with Dr. Jake Wolf. The 2024 RECOVER guidelines, published in June 2024, revise core recommendations for dogs and cats across basic life support, advanced life support, preparedness, post-cardiac arrest care, and additional domains, giving veterinary teams a more current framework for managing one of the highest-stakes moments in practice. (recoverinitiative.org)

The update has been a long time coming. RECOVER first published evidence-based veterinary CPR guidelines in 2012, and the 2024 revision is the initiative’s first major update since then. According to the RECOVER initiative and the methods paper indexed by PubMed, the new guidelines were developed using a GRADE-based evidence review process, modeled on human resuscitation guideline development, and involved more than 200 veterinary contributors. The 2024 effort also expanded beyond the original core domains to include areas such as newborn resuscitation, large animal CPR, and first aid, reflecting how much the field has matured since the original campaign launched. (pubmed.ncbi.nlm.nih.gov)

For small animal teams, the most actionable changes are highly practical. The updated recommendations call for shallower compressions, about 25% of the anterior-posterior chest diameter, when wide-chested patients are in dorsal recumbency, rather than the traditional one-third to one-half depth used for other body types. They also recommend starting compressions in lateral recumbency in wide-chested animals until intubation is secured, then transitioning during a pause if appropriate. For small dogs and cats, the guidance now distinguishes among circumferential two-thumb, one-handed, and heel-of-hand compression techniques. Ventilation guidance was also broadened: if intubation is not yet possible, tight-fitting masks with resuscitator bags are emphasized, with mouth-to-nose ventilation framed as a temporary option when rescuer safety is not at risk. (todaysveterinarynurse.com)

Monitoring and drug recommendations also changed in ways that could alter code response. The target ETCO2 during CPR was raised from 15 mm Hg to 18 mm Hg as a marker of more effective perfusion. High-dose epinephrine was removed because evidence did not show improved outcomes and raised concerns about harm. In refractory shockable rhythms, vasopressin at 0.8 U/kg is now preferred first-line, with epinephrine as an alternative if vasopressin is unavailable. The advanced life support recommendations also support doubling the defibrillation dose once to 4 J/kg for a second shock, then maintaining that dose for later shocks, while suggesting lidocaine for dogs, amiodarone for cats, and esmolol as an adjunct in selected unresponsive shockable cases. PubMed’s summary of the ALS domain paper reflects those same changes. (todaysveterinarynurse.com)

Industry and expert commentary has focused on implementation. In the Royal Veterinary College’s December 13, 2024 podcast, Professor Dan Fletcher said the updated guidance was assembled by RECOVER leadership including Drs. Boller and Burkitt alongside program director Ken Yagi, underscoring that the revisions are meant to be practical, evidence-based tools for the profession, not just academic updates. RECOVER’s own materials describe the 2024 release as a major global revision intended to raise the standard of emergency care for dogs and cats. A 2025 continuing education review in Today’s Veterinary Nurse translated those changes into bedside takeaways, emphasizing that uninterrupted, high-quality BLS remains the cornerstone even as pharmacologic and monitoring details evolve. (rvc.ac.uk)

Why it matters: For veterinary professionals, this is really a systems story. Survival to discharge after cardiopulmonary arrest remains low overall, though outcomes can be better in reversible causes such as anesthetic complications, so small changes in team preparedness and CPR quality can matter. The updated guidance gives hospitals more specific operational targets, but it also raises the bar for training: clinics may need to revise posted algorithms, drug charts, ETCO2 expectations, defibrillation settings, and role assignments during mock codes. Earlier survey research found that clinicians aware of RECOVER guidelines were significantly more likely to follow recommended preparedness, BLS, and ALS practices, suggesting that dissemination and rehearsal are likely as important as the recommendations themselves. (todaysveterinarynurse.com)

Another practical implication is that the 2024 update may shift conversations across the care team, including credentialed technicians, ER clinicians, anesthetists, and general practitioners who occasionally face arrest events. The recommendations are more nuanced than a single universal CPR script, especially for body conformation, rhythm type, and airway status. That makes protocol standardization inside each hospital more important, not less. Inference: practices that simply note the new guidance without revising workflows may miss much of its benefit, because several of the key updates depend on split-second decision-making under stress. That inference is supported by the implementation focus in RECOVER educational materials and by prior evidence linking guideline awareness to better compliance. (recoverinitiative.org)

What to watch: The next phase is likely to be adoption, not another immediate guideline rewrite. Watch for broader uptake through CE, hospital policy updates, and RECOVER training resources, as well as future outcome studies asking whether the 2024 changes improve ROSC, neurologic outcomes, or survival to discharge in real-world practice. (recoverinitiative.org)