Decompression Illness in Divers With or Without Patent Foramen Ovale

Hyun-Jong Lee,Dal Soo Lim, Jun-Young Lee, Dong-geun Lee,Mi-Young Oh,Jinsik Park,Chi-Hoon Kim, Jens Jung,Rak Kyeong Choi, Young Cheon Kang

Annals of Internal Medicine(2023)

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摘要
Background: In previous studies, the prevalence of patent foramen ovale (PFO) has been reported to be higher in scuba divers who experienced decompression illness (DCI) than in those who did not. Objective: To assess the association between PFO and DCI in scuba divers. Design: Prospective cohort study. Setting: Tertiary cardiac center in South Korea. Participants: One hundred experienced divers from 13 diving organizations who did more than 50 dives per year. Measurements: Participants had transesophageal echocardiography with a saline bubble test to determine the presence of a PFO and were subsequently divided into high- and low-risk groups. They were followed using a self-reported questionnaire while blinded to their PFO status. All of the reported symptoms were adjudicated in a blinded manner. The primary end point of this study was PFO-related DCI. Logistic regression analysis was done to determine the odds ratio of PFO-related DCI. Results: Patent foramen ovale was seen in 68 divers (37 at high risk and 31 at low risk). Patent foramen ovale–related DCI occurred in 12 divers in the PFO group (non-PFO vs. high-risk PFO vs. low-risk PFO: 0 vs. 8.4 vs. 2.0 incidences per 10 000 person-dives; P = 0.001) during a mean follow-up of 28.7 months. Multivariable analysis showed that high-risk PFO was independently associated with an increased risk for PFO-related DCI (odds ratio, 9.34 [95% CI, 1.95 to 44.88]). Limitation: The sample size was insufficient to assess the association between low-risk PFO and DCI. Conclusion: High-risk PFO was associated with an increased risk for DCI in scuba divers. This finding indicates that divers with high-risk PFO are more susceptible to DCI than what has been previously reported and should consider either refraining from diving or adhering to a conservative diving protocol. Primary Funding Source: Sejong Medical Research Institute.
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foramen ovale,illness,divers
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