Ultrasonographic study of a modified axillary approach to block the major branches of the brachial plexus in dogs.

Objective: To provide ultrasonographic mapping of the axillary region of dogs to facilitate identification of the major branches of the brachial plexus in relation to the axillary artery.

Study Design: Prospective study.

Animals: A total of two dog cadavers and 50 client-owned, healthy dogs weighing >15 kg.

The use of ultrasound to assist epidural injection in obese dogs.

Objective: To evaluate the use of ultrasound for identifying the site for needle puncture and to determine the depth to the epidural space in obese dogs.

Study Design: Prospective study in dogs undergoing elective orthopedic surgery.

Animals: A group of seven obese Labrador male dogs aged 6.