Cat · Felis catus · typical adult weight 2.50–7.00 kg
Nitrous Oxide is used in cats for Anesthetic adjunct. Routes documented in cats: INHALATION. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Nitrous Oxide in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: N2O
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| INHALATION | Dosing: 50-66% of inspired gas | Continuous during anesthesia | Duration of procedure | Anesthetic adjunct | Moderate | Duke T, Caulkett NA and Tataryn JM (2006) The effect of nitrous oxide on halothane, isoflurane... (BSAVA Nitrous oxide monograph reference, Part A p.287) — Verified against BSAVA Small Animal Formulary, 10th Ed, Part A, p.303 (2026-08-01). |
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NMDA receptor antagonist with analgesic and anxiolytic properties. Low potency (MAC >100%) so used as adjunct to reduce requirements of other inhalants.
Second gas effect. Diffusion hypoxia during recovery — give 100% O2 for 5 min after discontinuation. Contraindicated with pneumothorax/GDV (gas-filled spaces expand). Expands air-filled viscera.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Nitrous Oxide dose range in cats, with cited source references: INHALATION Dosing: 50-66% of inspired gas Continuous during anesthesia. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Nitrous Oxide in cats: INHALATION.
Cited course lengths for Nitrous Oxide in cats include: Duration of procedure. Duration depends on the indication — match it to the specific dose rule in the table above.
Nitrous Oxide is indicated in cats for: Anesthetic adjunct.
These are general warnings for Nitrous Oxide across species; consult the cat dosing table above for species-specific guidance. Second gas effect. Diffusion hypoxia during recovery — give 100% O2 for 5 min after discontinuation. Contraindicated with pneumothorax/GDV (gas-filled spaces expand). Expands air-filled viscera.
Why a species-specific page? Nitrous Oxide pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cats — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.