Risks of Reusing Needles in Medical Injections: What You Should Know

Infection issues related to the reuse of needles?

Hello, Doctor: I would like to ask you a question regarding an infection.
Today, I went to the clinic for a cold, and while the nurse was administering an injection, she missed the vein on the first attempt and directly placed the used needle, without covering it, on the treatment tray.
When she gave me the second injection, she did not change the needle and proceeded to inject me again, and although she also missed the vein with the second attempt, she only changed the needle after I pointed it out.
I would like to know, even though it was my own needle, what kind of infection risks are associated with reusing a needle for injections? What should I be aware of? I am a bit worried and would greatly appreciate your assistance.
Thank you very much.

yuna, 30~39 year old female. Ask Date: 2016/04/20

Dr. Liao Zhongxin reply Internal Medicine

Dear readers,
1.
Regarding whether the second injection can be reused without disinfection, you can request the healthcare staff to use new equipment.

2.
If you are concerned about infection, you can practice self-health management, such as: taking your temperature (which should be below 37.3 degrees Celsius) and checking for redness, swelling, heat, or pain at the injection site.

Thank you!

Reply Date: 2016/04/20

More Info

The concern regarding the reuse of needles in medical settings is a valid one, especially in light of the potential risks associated with infections. In your situation, where a nurse reused a needle for a second injection without changing it after the first attempt failed, it raises important questions about safety and infection control.

Firstly, it is essential to understand that needles are designed for single use to prevent the transmission of infections. Even if the needle is used on the same patient, there are still risks involved. When a needle is inserted into the skin, it can carry bacteria from the skin surface into the body. If the needle is not changed and is used again, there is a risk that any bacteria present on the needle could be introduced into the bloodstream or tissues, potentially leading to an infection.

The risk of infection from a reused needle can vary depending on several factors, including the cleanliness of the needle, the technique used during the injection, and the patient's overall health and immune status. In general, the risk of transmitting bloodborne pathogens such as Hepatitis B, Hepatitis C, and HIV through a reused needle is significantly lower when the needle is used on the same patient, compared to using a needle on different patients. However, it is not zero. The Centers for Disease Control and Prevention (CDC) and other health organizations strongly advise against the reuse of needles in any circumstance due to the potential for infection.

In your case, since the nurse did not change the needle after the first attempt, there is a slight risk of introducing bacteria into your body. However, if the needle was not visibly contaminated and if the nurse followed proper hygiene protocols (such as handwashing and using gloves), the risk may be lower. Still, it is crucial to monitor for any signs of infection at the injection site, such as redness, swelling, warmth, or discharge. If you notice any of these symptoms, it is important to seek medical attention promptly.

Additionally, it is advisable to inform the healthcare provider about your concerns. They may want to assess the injection site and provide guidance on what to watch for in terms of infection. If you have any underlying health conditions or a compromised immune system, you should be particularly vigilant.

In summary, while the risk of infection from a reused needle on the same patient is lower than if the needle were reused on different patients, it is still a concern. Proper infection control practices, including the use of new needles for each injection, are essential to minimize risks. If you have any further concerns or experience any symptoms, do not hesitate to reach out to your healthcare provider for advice and assistance.

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