Table 1. Summary table of the responses of three snake species to different anesthetic agents and different delivery systems. The mean induction and recovery times are given in minutes with the range given in parentheses. The sample sizes (N) and number of fatalities are indicated.

Species

Delivery

Agent

N

Induction

Recovery

Death

Elaphe o. obsoleta

Vaporizer

Isoflurane

105

18 (12-26)

12 (1-31)

0

Open

Halothane

7

29 (23-33)

over 702

2

Methoxyflurane

2

1

Nerodia s. sipedon

Open

Halothane

70

25 (20-45)

402

4

Sistrurus c. catenatus

Vaporizer

Halothane

36

38 (18-60)

602

1

1 Black rat snakes never reached surgical anesthesia under methoxyflurane.

2 The response to halothane in the open technique or delivered with a vaporizer was highly variable for all snakes. Refer to text for details.