Effect of catheter-based patent foramen ovale closure on the occurrence of arterial bubbles in scuba divers

. 2014 Apr ; 7 (4) : 403-8. [epub] 20140314

Jazyk angličtina Země Spojené státy americké Médium print-electronic

Typ dokumentu časopisecké články, pozorovací studie, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid24630875
Odkazy

PubMed 24630875
DOI 10.1016/j.jcin.2013.12.199
PII: S1936-8798(14)00445-2
Knihovny.cz E-zdroje

OBJECTIVES: This study sought to evaluate the effect of catheter-based patent foramen ovale (PFO) closure on the occurrence of arterial bubbles after simulated dives. BACKGROUND: PFO is a risk factor of decompression sickness in divers due to paradoxical embolization of bubbles. To date, the effectiveness of catheter-based PFO closure in the reduction of arterial bubbles has not been demonstrated. METHODS: A total of 47 divers (age 35.4 ± 8.6 years, 81% men) with a PFO (PFO group) or treated with a catheter-based PFO closure (closure group) were enrolled in this case-controlled observational trial. All divers were examined after a simulated dive in a hyperbaric chamber: 34 divers (19 in the PFO group, 15 in the closure group) performed a dive to 18 m for 80 min, and 13 divers (8 in the PFO group, 5 in the closure group) performed a dive to 50 m for 20 min. Within 60 min after surfacing, the presence of venous and arterial bubbles was assessed by transthoracic echocardiography and transcranial color-coded sonography, respectively. RESULTS: After the 18-m dive, venous bubbles were detected in 74% of divers in the PFO group versus 80% in the closure group (p = 1.0), and arterial bubbles were detected in 32% versus 0%, respectively (p = 0.02). After the 50-m dive, venous bubbles were detected in 88% versus 100%, respectively (p = 1.0), and arterial bubbles were detected in 88% versus 0%, respectively (p < 0.01). CONCLUSIONS: No difference was observed in the occurrence of venous bubbles between the PFO and closure groups, but the catheter-based PFO closure led to complete elimination of arterial bubbles after simulated dives. (Nitrogen Bubble Detection After Simulated Dives in Divers With PFO and After PFO Closure; NCT01854281).

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NCT01854281

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