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• Vol.52 No.10
• CLINICA NEUROL, 52: 757−761, 2012
• Vol.52 No.10 contents

Case Report

Neurological decompression illness in a Japanese breath-hold diver: a case report

Ryu Matsuo, M.D.¹⁾, Shuji Arakawa, M.D.¹⁾, Yoshihiko Furuta, M.D.¹⁾, Yuka Kanazawa, M.D.¹⁾, Masahiro Kamouchi, M.D.²⁾ and Takanari Kitazono, M.D.²⁾

¹⁾Division of Cerebrovascular Medicine, Japan Labour Health Welfare Organization, Kyushu Rosai Hospital
²⁾Department of Cerebrovascular Medicine, Kyushu University Hospital

We report a Japanese breath-hold diver (Ama) who presented neurological disorders after diving. He repeated diving into 25-30 meters depth in the sea for 6 hours. After diving, he felt dizziness and unsteady gait. Neurological examination showed left quadrant hemianopia, bilateral limb ataxia and ataxic gait. Head CT revealed gas bubbles in the left parietal lobe. In CT scan on 3 days after onset, gas bubbles disappeared and low density areas were observed in the bilateral parietal lobes. Brain imaging (DWI, T₂WI and FLAIR) demonstrated high intensity in the parieto-occipital lobes. Neither pulmonary barotrauma nor intracardiac shunt was detected. He was diagnosed as having neurological decompression illness and therefore underwent hyperbaric oxygen therapy. The pathogenesis of this case was considered to be microbubbles induced by decompression. The present case suggests that repetitive rapid surfacing from the deep sea causes neurological decompression illness even in the breath-hold diver.
Full Text of this Article in Japanese PDF (439K)

(CLINICA NEUROL, 52: 757−761, 2012)
key words: neurological decompression illness, breath-hold dive, magnetic resonance image, gas bubble

(Received: 17-Mar-12)