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Alternobaric vertigo

Naoharu Kitajima, Akemi Sugita-Kitajima, Seiji Kitajima
OBJECTIVES: The number of people participating in sport self-contained underwater breathing apparatus (SCUBA) diving has increased tremendously, bringing with it a rise in diving accidents. Alternobaric vertigo (AV) is a common problem in SCUBA divers. We investigated the relationship between Eustachian tube function and incidence of AV in sport SCUBA divers. We also followed the progress of these divers after Eustachian tube function improved. METHOD: Forty-four patients who experienced a SCUBA diving accident affecting the middle ear (11 men and 33 women; mean ± SD: 37...
June 2014: Otology & Neurotology
Andres Endara-Bravo, Daniel Ahoubim, Edward Mezerhane, R Alexandre Abreu
Continuous positive airway pressure (CPAP) is a safe therapy for the management of obstructive sleep apnea (OSA). Complications such as sinus infection, bronchitis, ear pain, nasal congestion, and dryness of mucous membranes secondary to CPAP use have been reported. To follow, we describe a rare case of alternobaric vertigo secondary to CPAP therapy. To date, there has been only one reported case of hearing loss and vertigo during CPAP treatment with complete resolution of symptoms after cessation of PAP. However, re-challenging the patient with CPAP at gradual increments was never reported...
December 15, 2013: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
Rachel A Evens, Barry Bardsley, Vinaya K C Manchaiah
Pre-1970s, diving was seen as a predominantly male working occupation. Since then it has become a popular hobby, with increasing access to SCUBA diving while on holiday. For a leisure activity, diving puts the auditory system at the risk of a wide variety of complaints. However, there is still insufficient consensus on the frequency of these conditions, which ultimately would require more attention from hearing-healthcare professionals. A literature search of epidemiology studies of eight auditory complaints was conducted, using both individual and large-scale diving studies, with some reference to large-scale non-diving populations ...
March 2012: Indian Journal of Otolaryngology and Head and Neck Surgery
Charles D Bluestone, J Douglas Swarts, Joseph M Furman, Robert F Yellon
We recently encountered a 15-year-old female with bilateral tympanostomy tubes who manifested persistent severe vertigo, at ground level, secondary to a unilateral middle-ear pressure of +200 mm H(2)O elicited by an obstructed tympanostomy tube in the presence of chronic nasal obstruction. We believe this is a previously unreported scenario in which closed-nose swallowing insufflated air into her middle ears, resulting in sustained positive middle-ear pressure in the ear with the obstructed tube. Swallowing, when the nose is obstructed, can result in abnormal negative or positive pressures in the middle ear, which has been termed the Toynbee phenomenon...
April 2012: Laryngoscope
Dai A Tran
No abstract text is available yet for this article.
September 2010: Aviation, Space, and Environmental Medicine
Peter Lindholm, Claes E G Lundgren
This is a brief overview of physiological reactions, limitations, and pathophysiological mechanisms associated with human breath-hold diving. Breath-hold duration and ability to withstand compression at depth are the two main challenges that have been overcome to an amazing degree as evidenced by the current world records in breath-hold duration at 10:12 min and depth of 214 m. The quest for even further performance enhancements continues among competitive breath-hold divers, even if absolute physiological limits are being approached as indicated by findings of pulmonary edema and alveolar hemorrhage postdive...
January 2009: Journal of Applied Physiology
A Gonnermann, J Dreyhaupt, M Praetorius, I Baumann, P K Plinkert, C Klingmann
BACKGROUND: Due to the increasing number of scuba divers in Germany, the otorhinolaryngologist has to face rising numbers of diving-associated ENT disorders. However, data about the lifetime prevalence of these disorders are insufficient. The aim of this study was to determine the frequency of ENT disorders in scuba divers correlated with their diving history. METHODS: The study design was a non-randomized, retrospective, cross-sectional study based on questionnaires...
May 2008: HNO
João Subtil, Jorge Varandas, Fernando Galrão, Alves Dos Santos
CONCLUSION: Having found a prevalence rate of alternobaric vertigo in Portuguese Air Force pilots that is somewhat higher than previously reported, we underline the importance of implementing education on the management of this condition as part of routine Air Force pilot training programs. OBJECTIVES: Alternobaric vertigo is a condition in which transient vertigo with spatial disorientation occurs suddenly during flying or diving activities, caused by bilateral asymmetrical changes in middle ear pressure...
August 2007: Acta Oto-laryngologica
Christoph Klingmann, Michael Knauth, Mark Praetorius, Peter K Plinkert
OBJECTIVE: To determine the prevalence of alternobaric vertigo (AV) in sport divers and to find out whether AV led to dangerous situations underwater. Furthermore, to examine whether objective neurootologic tests are associated with the manifestation of AV. DESIGN: Retrospective cohort study. PARTICIPANTS: Sixty-three sport divers with an average diving experience of 10 years and 650 dives were questioned regarding their medical and diving history and the manifestation of vertigo during diving...
December 2006: Otology & Neurotology
Cem Uzun, Recep Yagiz, Abdullah Tas, Mustafa K Adali, Nurkan Inan, Muhsin Koten, Ahmet R Karasalihoglu
We investigated the eustachian tube function and the incidence of alternobaric vertigo (AV) in 29 sport self-contained underwater breathing apparatus (SCUBA) divers with, or without, some possible risk factors for AV. The divers had normal audiological and otoscopic findings at the pre-dive examination. We used the nine-step inflation/deflation tympanometric test and Toynbee test for evaluation of eustachian tube function, and the Valsalva manoeuvre for patency. Information on divers, their history, and their otolaryngologic examination were obtained in the pre-dive examination...
November 2003: Journal of Laryngology and Otology
No abstract text is available yet for this article.
August 28, 1965: British Medical Journal (1857-1980)
B Fattori, G De Iaco, A Nacci, A Casani, F Ursino
Hyperbaric oxygen therapy (HBQ) has been used for several years as a treatment for Ménière's disease, particularly in Sweden. In this study continuous variations in pressure (from 1.7 to 2.2 ATA; alternobaric oxygen therapy: ABOT) were used to decrease endolymphatic hydrops, the typical histopathological substrate of Ménière's disease by increasing hydrostatic pressure and mechanical stimulation of the endolymphatic flow toward the duct and the endolymphatic sac, which produces a consequent increase in the dissolved O2 content in the labyrinth liquid, which should contribute to recovering cell metabolism and restoring cochlear electrophysiological function to normal...
2002: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
H E Ross
Pressure vertigo or alternobaric vertigo is the type of vertigo normally associated with relative overpressure in the middle ear. As with other types of vertigo, it should occur only if there is unequal stimulation of the left and right vestibular systems: there should be a lawful relation between the orientation of the head, the side of the overpressured ear, and the direction of apparent movement. Few published accounts give information on all these aspects. This paper reports some old and new cases which suggests that, when the head is upright during the ascent, overpressure in the right ear causes apparent bodily and visual movement to the right (clockwise), while overpressure in the left ear has the opposite effect...
December 1976: Undersea Biomedical Research
M Suzuki, H Kitano, Y Yazawa, K Kitajima
Changes in ambient pressure can elicit the vertigo and bodily disequilibrium known clinically as alternobaric vertigo. Our previous studies showed that changes in middle ear pressure altered the activity of the primary vestibular neuron, and the finding suggests that the pressure-induced vestibular response causes alternobaric vertigo. To investigate the roles played by the round window (RW) and the oval window (OW) in the vestibular response induced by pressure, we measured the change in perilymphatic pressure and the firing rates of primary vestibular neurons after the application of positive or negative pressure to the middle ear...
September 1998: Acta Oto-laryngologica
M Kossowski, O Coulet, J L Florentin, D Bonete, Y Gauvin, L Bonne, J P Cohat
Vertigo is relatively common after diving. Although it may be the result of the changes in pressure, it can also be a feature of decompression accidents, of clinical toxicity, simply be a manifestation of altered physiology resulting from immersion in a weightless environment in which all the organs involved in maintaining equilibrium (vestibular system, proprioception and vision) are affected. It seemed to us to be of interest to study the incidence of vertigo in naval divers by means of an anonymous questionnaire...
1997: Revue de Laryngologie—Otologie—Rhinologie
B Fattori, G De Iaco, G Vannucci, A Casani, P L Ghilardi
Forty-five patients suffering from Menière's disease were submitted to pressure chamber therapy: 20 with constant pressure (2.2 ATA, hyperbaric treatment) and 25 with continuous variations in pressure levels (from 1.7 to 2.2 ATA, alternobaric treatment). Oxygenation therapy consisted of one session per day lasting 90 minutes for 15 days during the acute attacks followed by five consecutive sessions per month during a follow-up of two years. For a control group we used 18 patients treated with 10 per cent intravenous glycerol during the acute episode and 8 mg tid of betahistine thereafter...
November 1996: Audiology: Official Organ of the International Society of Audiology
H Nagai, T Nakashima, T Suzuki, N Yanagita
We investigated the effect of increased middle ear pressure on blood flow to the inner ear, middle ear, and facial nerve in guinea pigs using a nonradioactive microsphere technique. The elevation of middle ear pressure significantly reduced blood flow to the middle ear. Blood flow to the facial nerve also decreased due to the elevation of the middle ear pressure but the reduction was not significant. Blood flow to the inner ear did not change even after the middle ear pressure was increased. Findings are discussed in relationship to aural barotrauma, alternobaric vertigo and facial baroparesis...
May 1996: Acta Oto-laryngologica
M Suzuki, H Kitano, Y Yazawa, K Kitajima
Ambient pressure changes are known to induce vertigo and bodily disequilibrium, e.g. alternobaric vertigo. It is predicted, based on clinical observations of such vertigo, that the rates of pressure change are responsible for alternobaric vertigo. The aim of the present study was to clarify the influence of the rates of pressure change on the activities of primary vestibular neurons using an animal model of alternobaric vertigo. The responses of primary vestibular neurons to middle ear pressure stimuli were investigated in guinea pigs under 2 different rates of pressure change (+/- 50, +/- 100 mmH2O/sec)...
May 1995: Nihon Jibiinkoka Gakkai Kaiho
P Groth, O Tjernström
The Eustachian tube function requested from flying personnel today is generally regarded as acceptable if hearing and otoscopic findings are normal and there is no history of ear disease. Since increasing performance of modern aircrafts place more rigorous demands on the equilibrating capacity of the Eustachian tube and difficulty to clear the ears already is the most common cause of temporary grounding among flying personnel, the present requirements for tubal function might gradually get more and more inefficient...
1984: ORL; Journal for Oto-rhino-laryngology and its related Specialties
C E Lundgren, L U Malm
No abstract text is available yet for this article.
February 1966: Aerospace Medicine
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