Concerns About Blood Exposure During Hospital IV Procedures - Internal Medicine

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Issues related to bleeding during injections in the hospital?


Hello Dr.
Liao, today I went to the hospital for an MRI examination.
The nurse placed an intravenous catheter in the inner side of my wrist, and halfway through the MRI, she administered a contrast agent.
After the MRI was completed, the nurse removed the catheter and applied a cotton ball.
I then took my clothes in a bag and went to the changing room to change back into my clothes.
Once I entered the changing room, I noticed that there was a significant amount of bleeding from the cotton ball that was on the catheter site.
I panicked and pressed on it, opened the door, and held the bag up to prevent blood from dripping.
I raised my hand high and went to find a nurse for assistance.
The nurse helped me replace the blood-soaked cotton ball with a new one and applied tape.
However, the injection site was not disinfected.
During this time, I touched the doorknob of the changing room and the bag, and my hands, which were covered in blood, pressed on the already bleeding cotton ball.
I am concerned about the possibility of contracting HIV.
Additionally, since I raised my hand high to prevent blood from flowing out, could that have caused any viruses to flow back into my system? Thank you for your response.

CHI, 50~59 year old female. Ask Date: 2024/05/03

Dr. Liao Zhongxin reply Internal Medicine


First, let's take a look at the data from the Centers for Disease Control (CDC) regarding the three main transmission routes of the HIV virus:
1.
Sexual transmission: Engaging in oral, anal, or vaginal intercourse without a condom with an HIV-infected individual or exchanging other bodily fluids carries a risk of infection.

2.
Blood transmission:
- Receiving or coming into contact with blood or blood products contaminated with HIV.

- Sharing needles, syringes, or diluents with individuals who are HIV-positive and inject drugs.

- Receiving an organ transplant from an HIV-infected donor.

3.
Vertical transmission from mother to child: An HIV-positive mother can transmit the virus to her baby during pregnancy, childbirth, or breastfeeding.

If none of the above three high-risk behaviors are present, the likelihood of contracting HIV is generally low.
As for the possibility of other bacterial infections, it depends on the circumstances at the time.
It is advisable to seek assistance from healthcare professionals for disinfection and bandaging before leaving the site.

Reply Date: 2024/05/03

More Info


It sounds like you had a very concerning experience during your recent hospital visit, and it's completely understandable to have worries about potential infections, especially with blood exposure. Let's address your concerns step by step.

First and foremost, the risk of contracting HIV (Human Immunodeficiency Virus) from exposure to blood in a situation like yours is extremely low, provided that certain conditions are not met. HIV is primarily transmitted through specific bodily fluids (blood, semen, vaginal fluids, and breast milk) from an infected person. For transmission to occur, the virus must enter the bloodstream, which typically requires direct access to the bloodstream through a cut or open wound, or through mucous membranes.

In your case, while you did experience bleeding from the IV site, the likelihood of HIV transmission would depend on several factors:
1. Infected Blood Exposure: For you to be at risk, the blood you came into contact with would need to be from a person who is HIV positive. If the blood was from your own IV site, there is no risk of HIV transmission since you are not infected.

2. Open Wounds or Mucous Membranes: If you had any open cuts or sores on your hands that came into contact with the blood, there could be a theoretical risk. However, simply touching blood with intact skin does not pose a risk.

3. Amount of Blood: The amount of blood that would need to be transferred to pose a risk is significant. A small amount of blood exposure, especially if it is your own, is not considered a risk for HIV transmission.

4. Time and Environment: HIV does not survive long outside the human body. Once exposed to air, the virus becomes inactive fairly quickly, which further reduces the risk of transmission from environmental surfaces.

Regarding your concern about raising your hand to prevent blood flow, this action would not cause the virus to flow back into your system. The virus does not travel in that manner; it requires specific conditions for transmission.

In terms of infection control, hospitals have protocols in place to minimize the risk of infection. If you are ever in a situation where you feel unsafe or unsure about the cleanliness of an area or procedure, it is always best to communicate your concerns to the healthcare staff immediately.

If you are still feeling anxious about this experience, it may be beneficial to speak with a healthcare professional who can provide reassurance and possibly conduct tests if necessary. They can also help you understand more about infection control practices in hospitals and how they protect patients.

In summary, while your experience was understandably alarming, the risk of contracting HIV from the situation you described is very low, especially if the blood was your own. If you have any further concerns or symptoms, do not hesitate to reach out to your healthcare provider for guidance and support.

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