Tachycardia after Isoflurane in cats

61 reports to the FDA describe tachycardia in cats given Isoflurane. That is 3.0% of all reports for this medicine, compared with 0.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

61Reports

51%Marked serious

33%Recovered

28%Died or euthanised

Same dayTypical onset

How soon it started

Same day

34 72%

1–2 days

11 23%

3–7 days

2 4.3%

1–4 weeks

0 0.0%

Over a month

0 0.0%

How the animals did

Recovered

20 33%

Still unwell when reported

16 26%

Died

7 11%

Euthanised

10 16%

Not known

8 13%

Problems reported at the same time

16 26%

16 26%

13 21%

12 20%

11 18%

11 18%

11 18%

11 18%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause tachycardia in cats?: 61 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?: In half of the reports with dates, it started within the same day of the first dose.
What should I do?: Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Tachycardia with similar medicines

Tachycardia after Ketamine 70 reports · 2.2% of its reports
Tachycardia after Butorphanol 65 reports · 2.9% of its reports
Tachycardia after Tiletamine + Zolazepam 32 reports · 1.9% of its reports
Tachycardia after Propofol 47 reports · 4.0% of its reports
Tachycardia after Atipamezole 48 reports · 4.6% of its reports
Tachycardia after Midazolam 23 reports · 3.1% of its reports
Tachycardia after Diphenhydramine 23 reports · 6.3% of its reports

All reported side effects of Isoflurane in cats · Medicines most reported with tachycardia