How Long Can IV Fluids Be Left in a Warmer?

a nurse checking IV flow on patient

How long can IV fluids be left in an IV warmer? This question often comes up for nurses and other medical professionals. Unfortunately, the answer to this question is complex. 

This blog post will explore the factors that play into how long IV fluids can be left in a warmer. We will also discuss some potential risks associated with leaving IV fluids in a warmer for too long.

a nurse checking IV flow on patient

What Are IV Warmers Used For?

As the name suggests, IV warmers keep IV fluids warm. In addition, the warmer helps regulate the fluid’s temperature, preventing it from cooling down too much or getting too hot. This is important because IV fluids that are too cold can cause hypothermia, while those that are too hot can cause burns.

IV fluids are often left in warmers for long periods, but how long can they actually be left in a warmer without causing problems? The answer to this question depends on a few factors, including the type of IV fluid being used and the temperature of the warmer.

Some IV fluids, such as saline solutions, can be left in a warmer for up to 24 hours without any problems. However, other IV fluids, such as blood products, should not be left in a warmer for more than 30 minutes. This is because these fluids can break down and become unsafe if they are left in a warmer for too long.

The IV warmer’s temperature also influences how long fluids can be left in the warmer. Most IV warmers are set to keep fluids at a temperature of around 100 degrees Fahrenheit. However, some warmers can be set to higher or lower temperatures.

IV fluids that are being kept at a higher temperature can be left in the warmer for a shorter period than those that are being kept at a lower temperature. The higher temperature can cause the fluids to break down more quickly.

In general, it is best to err on the side of caution and not leave IV fluids in a warmer for more than 30 minutes, regardless of the type of fluid or the temperature of the warmer. This will help to ensure that the IV fluids are safe and effective.

What Are the Risks of Leaving IV Fluid in a Warmer for Too Long?

Leaving IV fluids in a warmer for too long can increase the risk of infection. The warmer can cause the fluid to become too hot, damaging the fluid’s cells. This can lead to bacteria or other microorganisms growing in the fluid, infecting the patient. 

Below are additional risks associated with leaving IV fluids in a warmer for too long:

The fluid may become too hot and cause burns to the patient.

Since IV fluid will be administered directly into the bloodstream, burns are a serious concern. Leaving the IV fluid in the warmer for too long can also cause the fluid to become more concentrated, leading to dehydration. If the IV fluid is not administered correctly, it can clot and block the needle, preventing the administration of other fluids or medications.

Leaving IV fluids in a warmer for too long can decrease the shelf life of the fluid.

Another risk of leaving IV fluids in a warmer for too long is that it can decrease the shelf life of the fluid. In addition, the heat from the warmer can break down the molecules in the fluid, making it less effective. Therefore, IV fluids should be removed from the warmer and administered to the patient as soon as possible.

The warmer may not be able to keep the fluid at a consistent temperature.

Fluctuations in the temperature of the fluid can cause the patient to experience discomfort. The warmer may also not be able to keep the fluid at a consistent temperature, which can lead to the IV fluid being too hot or too cold. 

Therefore, removing the IV fluid from the warmer is essential and administering it to the patient as soon as possible. This way, the patient can receive the most benefit from the fluid.

a blood warming device on patient's arm during transfusion

Tips on How To Use an IV Warmer Properly

Since the average person is not a medical professional, they may not know how to use an IV warmer properly. Here are some tips on how to properly use an IV warmer:

  • Make sure the IV fluids are at room temperature before putting them into the warmer. Room temperature IV fluids will help prevent the formation of bacteria.
  • Once the IV fluids are in the warmer, set the temperature between 104-109 degrees Fahrenheit.
  • Check the IV fluids every 30 minutes to ensure they are still at the proper temperature. If the IV fluids get too cold, they must be warmed up again. Do not leave the IV fluids in the warmer for more than 12 hours.

Following these tips ensures that your IV fluids are properly warmed and safe to use. Guaranteeing a patient’s safety is always the top priority. Therefore, learning how to use an IV warmer properly is essential.