The first working ventilator was used on what animal?

The first working ventilator was used on what animal?

• A. Dog
• B. Cat
• C. Monkey
• D. Sheep

Answer: (A)

Testing early respiratory devices on animals lets researchers see if the machine can reliably support breathing, regulate air exchange, and keep the subject alive before trying it in people. The first working ventilator was used on a dog. Dogs were chosen because their chest size and airway anatomy are workable for early machines, making it possible to connect the device and monitor breathing and gas exchange in a controlled way. This animal testing provided crucial data on how well the device could sustain ventilation, guiding improvements before any human use. Later on, other animals were involved as devices evolved, but the initial milestone came from demonstrating ventilation in a dog.

Testing early respiratory devices on animals lets researchers see if the machine can reliably support breathing, regulate air exchange, and keep the subject alive before trying it in people. The first working ventilator was used on a dog. Dogs were chosen because their chest size and airway anatomy are workable for early machines, making it possible to connect the device and monitor breathing and gas exchange in a controlled way. This animal testing provided crucial data on how well the device could sustain ventilation, guiding improvements before any human use. Later on, other animals were involved as devices evolved, but the initial milestone came from demonstrating ventilation in a dog.