If your animal is light while under anesthestic, this indicates a leak or other problem in your anesthesia system.

Your first thought might be that there’s something wrong with the vaporizer, but our decades of experience as certified anesthesia specialists has shown that this is rarely the case.

An Anesthesia System Pressure/Leak Test is the best way to verify the tightness of your system and troubleshoot the cause of any leaks. Vetland Medical offers is our Pressure Test Kit that makes this process very simple to run.  Select whether you have the Pressure Test Kit below to get started.

I have Vetland's Pressure Test Kit

Step 1:

Connect the Short Circuit Tube to the Inspiratory and Expiratory ports of your Anesthesia Machine.

Step 2:

Connect the Pressure Test Bulb to the Bag Port. This will allow you to pressurize the system. Be sure and close the Bleed Valve on the Pressure Bulb.

Step 3:

Close the Popoff Valve completely.

Step 4:

Make sure the Vaporizer Fill Port has been completely closed.

Step 5:

Squeeze the bulb to pressurize the system above 50 Centimeters of Water Pressure.

Watch the Pressure Gauge to see how well your system holds this pressure. On a tight system, if you’re at 50 Centimeters of Water Pressure, it should not drop to 40 Centimeters of Water Pressure within 30 seconds.

I don't have Vetland's Pressure Test Kit

Step 1:

Take your Breathing Circuit and hook it up to your Anesthesia System. Put your thumb on the Patient End to stop air from escaping.

Step 2:

Remove the Bag from the Bag Port, and put your hand over the opening to stop air from escaping.

Step 3:

Make sure the Vaporizer Fill Port has been completely closed.

Step 4:

Close the Popoff Valve completely.

Step 5:

Hit the Flush Button on your Machine, or dial in some Oxygen, until the Pressure Gauge rises above 50 Centimeters of Water Pressure, then shut the Oxygen off.

Watch the Pressure Gauge to see how well your system holds this pressure. On a tight system, if you’re at 50 Centimeters of Water Pressure, it should not drop to 40 Centimeters of Water Pressure within 30 seconds.

How did your System do?

My system passed the Pressure Test

This means that your anesthesia machine, including the vaporizer, is not leaking. The problem must be elsewhere.

Common Leak #1: The Breathing Circuit

The corrugated tube of the breathing circuit could be hiding a hairline crack or fracture. Try switching out the Breathing Circuit for a new one and see if that fixes the problem.

Common Leak #2: The Bag

Many times the Bag gets torn up around the collar area, where there is great tension on the rubber. Try switching out the Bag for a new one and see if that fixes the problem.

My system did not pass the Pressure Test

There are still several areas that could be compromised that don’t involve a problem with the vaporizer’s internal components.

Common Leak #1: The Vaporizer Fill Port

In addition to the fill port being closed completely, sometimes debris in the fill port, such as dog hair or paper off of the drug bottle, can break the seal and allow air to escape.

Common Leak #2: The C02 Canister

The C02 Canister must make a good seal with the main body of your machine. Inspect the knife edges of the outer and inner rings of the canister for cracks or chips. Also inspect the rubber gasket that meets the canister to make sure it’s free of imperfections.

Common Leak #3: The Breathing Circuit

If you do not have a Pressure Test Kit, a cracked or fractured Breathing Circuit could be compromising your results. Try switching out the Breathing Circuit for a new one and run the test again.

Did checking all these sources of leaks resolve the issue?

Yes!

Great! We’re glad your system is back up and running.

No

We’re sorry your system is still not working correctly for you. If your machine is a Vetland Medical machine, please Contact Us so that our experienced technicians and service team may assist you further.