Since 1997
by DAN Medical Team on September 7th, 2017

​I'm a beginner diver, and I have difficulty equalizing my ears. I have heard that I shouldn't dive if I use nasal decongestants, but is it safe to dive if I use nasal steroids?


by DAN Medical Team on September 7th, 2017

​I recently had a stapedectomy. Can I dive? What are the risks?


by DAN Medical Team on September 7th, 2017

​Why do the effects of decompression sickness (DCS) last longer than the 12 to 18 hours it takes to offgas? Do the bubbles that cause DCS lead to other problems in the body that last longer? If that's the case, why are chamber dives effective in easing the symptoms of DCS even after a day or more has passed and the level of inert gas in the body is no longer elevated?


by DAN Medical Team on September 7th, 2017

​While checking out the safety gear available on a dive boat, I noticed an automated external defibrillator (AED) among the first-aid equipment. Is it safe to use an AED around water? How about on a metal boat deck?


by DAN Medical Team on September 7th, 2017

​I am 48 years old and have moderate hypertension. I was diagnosed with pulmonary stenosis, which was surgically corrected. The pulmonary valve, however, is allowing some blood to leak, permitting backflow. Is this a disqualifier for scuba diving? What short-term and long-term risks are involved in diving with this medical issue?