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Hyperbaric oxygen-associated seizure leading to stroke.
We report an event in which a seizure and stroke occurred together and consider that the stroke may have been caused by seizure-induced demand ischaemia. This challenges the generally held view that oxygen toxicity seizures in the clinical hyperbaric setting are benign. A discussion of the literature on the subject of seizure-induced brain injury is included. Risk factors for cerebrovascular disease should be taken into consideration in determining treatment pressures for HBOT, as reducing pressure reduces seizure risk. PMID: 29241238 [PubMed - in process]
Source: Diving and Hyperbaric Medicine - December 15, 2017 Category: Sports Medicine Tags: Diving Hyperb Med Source Type: research

Ischaemia-reperfusion injury and hyperbaric oxygen pathways: a review of cellular mechanisms.
Authors: Francis A, Baynosa R Abstract Ischaemia-induced tissue injury has wide-ranging clinical implications including myocardial infarction, stroke, compartment syndrome, ischaemic renal failure and replantation and revascularization. However, the restoration of blood flow produces a 'second hit' phenomenon, the effect of which is greater than the initial ischaemic event and characterizes ischaemia-reperfusion (IR) injury. Some examples of potential settings of IR injury include: following thrombolytic therapy for stroke, invasive cardiovascular procedures, solid organ transplantation, and major trauma resuscitat...
Source: Diving and Hyperbaric Medicine - June 24, 2017 Category: Sports Medicine Tags: Diving Hyperb Med Source Type: research

Cerebral arterial gas embolism proven by computed tomography following transthoracic echocardiography using bubble contrast.
Authors: Banham ND, Saw J, Hankey GJ, Ghia D Abstract A 75 year-old male developed features of an acute stroke following bubble contrast echocardiography, which was shown on emergent computed tomography scanning to be a result of cerebral arterial gas embolism (CAGE) to the left middle cerebral artery. Ischaemic stroke symptoms have previously been reported as a rare complication of bubble contrast echocardiography. Radiologically proven CAGE from bubble contrast echocardiography had not been reported at the time this case occurred. Immediate provision of 100% oxygen and administration of hyperbaric oxygen are reco...
Source: Diving and Hyperbaric Medicine - September 22, 2020 Category: Sports Medicine Tags: Diving Hyperb Med Source Type: research

The cardiac effects of hyperbaric oxygen at 243 kPa using inchamber echocardiography.
CONCLUSIONS: TTE can be safely performed within a hyperbaric chamber. Cardiac physiology is not adversely affected by HBO in individuals without active cardiac disease. PMID: 25311320 [PubMed - indexed for MEDLINE]
Source: Diving and Hyperbaric Medicine - December 11, 2015 Category: Sports Medicine Tags: Diving Hyperb Med Source Type: research

Hyperbaric oxygen therapy for osteoradionecrosis.
Authors: Cooper PD, Smart DR Abstract Dr Sames and colleagues are to be commended on their thought-provoking article about regional variation in hyperbaric oxygen treatment (HBOT) provision for oro-facial osteoradionecrosis (ORN) across Australia and New Zealand. The four-fold difference between jurisdictions requires further elucidation. As co-directors of the only comprehensive hyperbaric facility in Tasmania, the state with the highest ORN treatment rate, we believe a number of issues pertaining to the Australian situation warrant further consideration. 1. Disease prevalence Comparisons between regions require c...
Source: Diving and Hyperbaric Medicine - April 7, 2016 Category: Sports Medicine Tags: Diving Hyperb Med Source Type: research

Acute spontaneous spinal cord infarction: Utilisation of hyperbaric oxygen treatment, cerebrospinal fluid drainage and pentoxifylline.
CONCLUSIONS: SCI can be severely disabling. Triple therapy with pentoxifylline, CSF drainage and HBOT may reduce disability and further prospective trials are required. PMID: 33325011 [PubMed - in process]
Source: Diving and Hyperbaric Medicine - December 17, 2020 Category: Sports Medicine Tags: Diving Hyperb Med Source Type: research

Diving-related disorders in commercial breath-hold divers (Ama) of Japan
Diving Hyperb Med. 2021 Jun 30;51(2):199-206. doi: 10.28920/dhm51.2.199-206.ABSTRACTDecompression illness (DCI) is well known in compressed-air diving but has been considered anecdotal in breath-hold divers. Nonetheless, reported cases and field studies of the Japanese Ama, commercial or professional breath-hold divers, support DCI as a clinical entity. Clinical characteristics of DCI in Ama divers mainly suggest neurological involvement, especially stroke-like cerebral events with sparing of the spinal cord. Female Ama divers achieving deep depths have rarely experienced a panic-like neurosis from anxiety disorders. Neuro...
Source: Diving and Hyperbaric Medicine - June 22, 2021 Category: Sports Medicine Authors: Kiyotaka Kohshi Hideki Tamaki Fr édéric Lemaître Yoshitaka Morimatsu Petar J Denoble Tatsuya Ishitake Source Type: research

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