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

Ryu Matsuo, Shuji Arakawa, Yoshihiko Furuta, Yuka Kanazawa, Masahiro Kamouchi, Takanari Kitazono

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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 parietooccipital 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.

Original languageEnglish
Pages (from-to)757-761
Number of pages5
JournalClinical Neurology
Volume52
Issue number10
DOIs
Publication statusPublished - Oct 1 2012

Fingerprint

Diving
Decompression
Parietal Lobe
Oceans and Seas
Gases
Gait Ataxia
Neurologic Gait Disorders
Barotrauma
Hemianopsia
Microbubbles
Hyperbaric Oxygenation
Neurologic Examination
Dizziness
Ataxia
Nervous System Diseases
Neuroimaging
Head
Lung

All Science Journal Classification (ASJC) codes

  • Clinical Neurology

Cite this

Neurological decompression illness in a Japanese breath-hold diver : A case report. / Matsuo, Ryu; Arakawa, Shuji; Furuta, Yoshihiko; Kanazawa, Yuka; Kamouchi, Masahiro; Kitazono, Takanari.

In: Clinical Neurology, Vol. 52, No. 10, 01.10.2012, p. 757-761.

Research output: Contribution to journalArticle

Matsuo, Ryu ; Arakawa, Shuji ; Furuta, Yoshihiko ; Kanazawa, Yuka ; Kamouchi, Masahiro ; Kitazono, Takanari. / Neurological decompression illness in a Japanese breath-hold diver : A case report. In: Clinical Neurology. 2012 ; Vol. 52, No. 10. pp. 757-761.
@article{d50fb79a39a84448a11b0ee464539663,
title = "Neurological decompression illness in a Japanese breath-hold diver: A case report",
abstract = "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 parietooccipital 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.",
author = "Ryu Matsuo and Shuji Arakawa and Yoshihiko Furuta and Yuka Kanazawa and Masahiro Kamouchi and Takanari Kitazono",
year = "2012",
month = "10",
day = "1",
doi = "10.5692/clinicalneurol.52.757",
language = "English",
volume = "52",
pages = "757--761",
journal = "Clinical Neurology",
issn = "0009-918X",
publisher = "Societas Neurologica Japonica",
number = "10",

}

TY - JOUR

T1 - Neurological decompression illness in a Japanese breath-hold diver

T2 - A case report

AU - Matsuo, Ryu

AU - Arakawa, Shuji

AU - Furuta, Yoshihiko

AU - Kanazawa, Yuka

AU - Kamouchi, Masahiro

AU - Kitazono, Takanari

PY - 2012/10/1

Y1 - 2012/10/1

N2 - 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 parietooccipital 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.

AB - 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 parietooccipital 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.

UR - http://www.scopus.com/inward/record.url?scp=84867672633&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84867672633&partnerID=8YFLogxK

U2 - 10.5692/clinicalneurol.52.757

DO - 10.5692/clinicalneurol.52.757

M3 - Article

C2 - 23064626

AN - SCOPUS:84867672633

VL - 52

SP - 757

EP - 761

JO - Clinical Neurology

JF - Clinical Neurology

SN - 0009-918X

IS - 10

ER -