Main Menu
Join Undercurrent on Facebook

The Private, Exclusive Guide for Serious Divers Since 1975 | |
For Divers since 1975
The Private, Exclusive Guide for Serious Divers Since 1975
"Best of the Web: scuba tips no other
source dares to publish" -- Forbes
October 2023    Download the Entire Issue (PDF) Vol. 49, No. 10   RSS Feed for Undercurrent Issues
What's this?

PFO a Higher Danger to Divers Than Thought

from the October, 2023 issue of Undercurrent   Subscribe Now

Subscriber Content Preview
Only active subscribers can view the whole article here

A PFO (a patent foramen ovale) is a common heart defect. It's a small opening between the left and right atrium of the heart that usually closes after birth. If it stays open, arterial blood can flow between the chambers, avoiding the lungs and causing nitrogen-loaded blood to recirculate more easily. Therefore, nitrogen absorbed during a dive is less easily off-loaded on ascent.

Previous studies have indicated that PFO prevalence is higher among divers who experienced DCI than those who did not, Hyun-Jong Lee, MD, a professor at Sejong University in South Korea, wrote in the current Annals of Internal Medicine. The researchers studied 100 experienced divers who completed more than 50 dives annually, dividing them into two groups. During a follow-up of 28.7 months, 12 divers in the PFO group had PFO-related DCI events. The incidence of DCI was 12.8%, which is higher than reported in previous literature....

Subscribers: Read the full article here

Get more dive info like these and other important scuba updates sent monthly to your email.
And a FREE Recent Issue of Undercurrent

Free Undercurrent Issue
Get a free
monthly email and
a sample issue!



I want to get all the stories! Tell me how I can become an Undercurrent Online Member and get online access to all the articles of Undercurrent as well as thousands of first hand reports on dive operations world-wide

Find in  

| Home | Online Members Area | My Account | Login | Join |
| Travel Index | Dive Resort & Liveaboard Reviews | Featured Reports | Recent Issues | Back Issues |
| Dive Gear Index | Health/Safety Index | Environment & Misc. Index | Seasonal Planner | Blogs | Free Articles | Book Picks | News |
| Special Offers | RSS | FAQ | About Us | Contact Us | Links |

Copyright © 1996-2024 Undercurrent (
3020 Bridgeway, Ste 102, Sausalito, Ca 94965
All rights reserved.