Medical FAQs

Here's a list compiled over the years of commonly asked questions. The list was created by DAN MDs and represent specific, evidence-based recommendations our member should take into consideration.

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I have to teach an OWD course to a student who has silicone breast implants. I would like to know if there are any contraindications to diving due to depth (pressure) and to nitrogen being absorbed by the silicone.
There is not a lot of information on the durability of silicone implants when diving. What is known basically refers to breast implants, and generally states that they are safe and reliable. The specific precautions to be taken are generic and mechanical.

The - actual and common - possibility that inert gas bubbles could form inside the implants, does not appear of considerable importance, since this phenomenon would remain limited to the inside of the implant, and therefore without causing any damage.
This applies both to implants made only of silicone, and to saline implants.

There is no information of statistic or scientific interest regarding soft tissue fillers, or injectable implants, even if theoretically, there could be the risk of a localized production of bubbles at a different rate from surrounding tissues.

However, considering that the filler is injected into the tissue and is free to move in the surrounding areas, it is possible that a gas exchange will take place, but with a non significant risk of damage.

I have breast implants. I would like to learn to dive but am afraid of what the pressure will do to the implants. Are there any studies on this?
Three types were tested: silicone-, saline-, and silicone-saline-filled. In this experiment, the researchers simulated various depth/time profiles of recreational scuba diving. There was an insignificant increase in bubble size (one to four percent) in both saline and silicone gel implants, depending on the depth and duration of the dive.

The silicone-saline-filled type showed the greatest volume change.

Bubble formation in implants led to a small volume increase, which is not likely to damage the implants or surrounding tissue. If gas bubbles do form in the implant, they resolve over time.

Once sufficient time has passed after surgery, when the diver has resumed normal activities and there is no danger of infection, she may begin scuba diving.

Breast implants do not pose a problem to diving from the standpoint of gas absorption or changes in size and are not a contraindication for participation in recreational scuba diving. Avoid buoyancy compensators with constrictive chest straps, which can put undue pressure on the seams and contribute to risk of rupture.