Table 1 General information and anaesthetic protocol in seven client-owned cats undergoing pelvic or hind limb orthopaedic procedures

Signalment

1-year-old DLH male (neutered)

1-year-old DSH male (neutered)

1-year-old DSH male (neutered)

1-year-old DSH female (spayed)

8-month-old DSH female (spayed)

10-year-old Norwegian Forest Cat female (spayed)

6-year-old British short hair female (spayed)

Body weight (kg)

2.5 kg

3.9 kg

4.9 kg

2.8 kg

1.9 kg

3.9 kg

3.2 kg

ASA Classification

ASA 3

ASA 2

ASA 2

ASA 2

ASA 2

ASA 3

ASA 2

Procedure

Hip fracture repair

MPL repair

Femoral fracture repair

Hip fracture repair

Left hind limb amputation

Left hind limb amputation (unresectable STS)

Hip luxation

Premedication drugs

Medetomidine^a (5 μg/kg IV) and methadone (0.3 mg/kg IV)

Midazolam^b (0.3 mg/kg IM), methadone (0.3 mg/kg IM), and alfaxalone^c (3 mg/kg IM)

Medetomidine (1 μg/kg IV) and methadone (0.3 mg/kg IV)

Medetomidine (5 μg/kg IM), methadone (0.3 mg/kg IM), and alfaxalone (3 mg/kg IM)

Midazolam (0.3 mg/kg IM), methadone (0.3 mg/kg IM), and alfaxalone (5 mg/kg IM)

Medetomidine (5 μg/kg IM), methadone (0.3 mg/kg IM), and ketamine^d (2 mg/kg IM)

Medetomidine (4 μg/kg IV) and methadone (0.2 mg/kg IV)

Induction drugs

Propofol^e (2 mg/kg IV) and ketamine (2 mg/kg IV)

Propofol (2 mg/kg IV) and ketamine (2 mg/kg IV)

Alfaxalone (1 mg/kg IV) and ketamine (2 mg/kg IV)

Propofol (2 mg/kg IV)

Alfaxalone (1 mg/kg IV) and ketamine (2 mg/kg IV)

Alfaxalone (1 mg/kg IV)

Alfaxalone (2 mg/kg IV)

Maintenance agent

Sevoflurane

Sevoflurane

Sevoflurane

Isoflurane

Isoflurane

Isoflurane

Isoflurane

Breathing system and fresh gas flow

Paediatric circle^f 0.5 L/min

Mini-Lack^g 0.8 L/min

Mini-Lack 0.8 L/min

Paediatric circle 0.8 L/min

Paediatric t-piece^h 0.5-2 L/min

Paediatric circle 0.8 L/min

Mini-Lack 0.5 L/min

IPPV

Yes

No

No

Yes

Yes

No

No