Nobuaki Hiraki

University of Occupational and Environmental Health Japan

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Tsuyoshi Udaka

University of Occupational and Environmental Health Japan

Hideaki Suzuki

University of Occupational and Environmental Health Japan

Teruo Shiomori

University of Occupational and Environmental Health Japan

Koichi Hashida

University of Occupational and Environmental Health Japan

Yohei Kadokawa

Kumamotorosaibyoin

Takeyuki Fujimura

University of Occupational and Environmental Health Japan

Tsuyoshi Inaba

Teikyo University

Takanori Mori

DMG Mori (Japan)

Junichi Okubo

Miyagi Prefectural Hospital Organization

Takuro Kitamura

University of Occupational and Environmental Health Japan

Cooperative Institutions

University of Occupational and Environmental Health Japan

The University of Tokyo

Yokohama City University

Hokkaido University

Tohoku University

University of Tsukuba

Institute of Occupational Medicine

Kumamotorosaibyoin

Fukuoka University

Kyushu University

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Rates of weathering and temporal changes in strength of bedrock of marine terraces in Boso Peninsula, Japan

Engineering Geology (2000)

Shoichi Hachinohe Nobuaki Hiraki Takasuke Suzuki

Bedrock

Soil production function

Parent material

10.1016/s0013-7952(99)00104-0

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Citations (32)

Immunoreactivities for glutathione S-transferases and glutathione peroxidase in the lateral wall of pigmented and albino guinea pig cochlea

Medical Molecular Morphology (2008)

Takeyuki Fujimura Hideaki Suzuki Tsuyoshi Udaka Teruo Shiomori Takanori Mori

Paraformaldehyde

Spiral ligament

10.1007/s00795-008-0405-z

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Citations (7)

Oncocytic Schneiderian Papilloma Confined to the Maxillary Sinus and Detected by FDG-PET

Nihon Bika Gakkai Kaishi (Japanese Journal of Rhinology) (2009)

Tsuyoshi Udaka Tsuyoshi Inaba Yohei Kadokawa Nobuaki Hiraki Junichi Okubo

We report a case of oncocytic Schneiderian papilloma confined to the maxillary sinus and initially detected using positron emission tomography with 18F-fluorodeoxyglucose (FDG-PET) at a very early stage. A 77-year-old man was based on computed tomography and magnetic resonance imaging findings, suspected of having a benign tumor, but positive FDG-PET uptake suggested malignancy. The tumor was resected via a Caldwell-Luc approach, and the histopathological diagnosis was oncocytic Schneiderian papilloma.Although we found FDG-PET to be highly useful in detecting hidden tumorous lesions, it was not entirely so in differentiating between benign and malignant tumors.

Inverted Papilloma

10.7248/jjrhi.48.373

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Citations (1)

Chronic Nasal Obstruction Causes Daytime Sleepiness and Decreased Quality of Life Even in the Absence of Snoring

American Journal of Rhinology (2007)

Tsuyoshi Udaka Hideaki Suzuki Takeyuki Fujimura Nobuaki Hiraki Jun‐ichi Ohkubo

There has been a growing awareness that nasal obstruction may impair various daily and social activities. We performed a questionnaire survey in a working population to clarify the contribution made by snoring concomitant with nasal obstruction to daytime sleepiness and quality of life (QOL).Seven thousand nine hundred eighty daytime workers were asked to complete questionnaires, 7702 responded, and the data from 3442 subjects were finally analyzed. Nasal obstruction and snoring were graded into three and four categories, respectively. Daytime sleepiness and QOL were assessed by the Epworth Sleepiness Scale (ESS) and the Medical Outcomes Study 36-Item Short-Form Health Survey, respectively.Subjects with chronic nasal obstruction, even if snoring was absent, reported significantly higher ESS scores and lower QOL scores than control subjects, and the presence of habitual snoring had an additive influence on these changes. The ESS and mental QOL scores adjusted for age, sex, and body mass index showed the same tendency.Induction of sleep-disordered breathing (SDB) is a possible cause of excessive daytime sleepiness and impaired QOL in subjects with nasal obstruction. A variant of SDB such as silent upper respiratory resistance syndrome may participate in this phenomenon in the absence of snoring.

Epworth Sleepiness Scale

10.2500/ajr.2007.21.3087

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Citations (29)

[Blockade of the obturator nerve in transurethral electroresection of urinary bladder tumors].

PubMed (1984)

Eijiro Okajima Kikuo Okamura T Shiomi Y Horii Yoshihiko Hirao

Obturator nerve

Nerve stimulator

Nerve stimulation

Source

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Delayed-onset temporary auditory threshold shift following head blow in guinea pigs

Hearing Research (2004)

N. Tokui Hideaki Suzuki Tsuyoshi Udaka Nobuaki Hiraki Takeyuki Fujimura

Auditory brainstem response

10.1016/j.heares.2004.08.009

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Citations (10)

Pooling in the tracheal blind pouch after laryngotracheal separation for recurrent aspiration pneumonia

JOURNAL OF JAPAN SOCIETY FOR HEAD AND NECK SURGERY (2008)

Nobuaki Hiraki Hideaki Suzuki Tsuyoshi Udaka Takanori Mori Junichi Okubo

We examined the pooling in the tracheal blind pouch created by laryngotracheal separation. Eight patients aged 14-56 years with recurrent aspiration pneumonia underwent laryngotracheal separation according to the modified Lindeman's procedure. Videofluorography was performed postoperatively, and X-rays of the neck were taken 6 and 24 hr later, and then every 24 hr until the contrast medium cleared away. The clearance time of the contrast medium was ≤ 24 hr in 5 patients, ≤ 48 hr in one patient, and ≤ 72 hr in 2 patients. Patients with better swallowing function tended to show shorter clearance time. One patient developed wound dehiscence of the tracheal blind pouch and needed reoperation, but late complications such as infections of the pouch were not observed in any of the patients. Based on the present results, infections in the blind pouch are prevented presumably by slow but continuous replacement of pooling material. We conclude that laryngotracheal separation is as reliable and effective as tracheoesophageal diversion for the treatment of intractable aspiration.

Pouch

Clearance

Aspiration Pneumonia

10.5106/jjshns.18.229

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Relationships between nasal obstruction, observed apnea, and daytime sleepiness

Otolaryngology (2007)

Tsuyoshi Udaka Hideaki Suzuki Takeyuki Fujimura Nobuaki Hiraki Teruo Shiomori

Objective We administered a questionnaire survey to a working population in an attempt to clarify the relationships between self‐reported nasal obstruction, observed apnea during sleep, and daytime sleepiness. Study Design A total of 7980 daytime workers were asked to complete questionnaires about nasal obstruction, apnea during sleep, and daytime sleepiness. Of the 7702 responses, the data from 4818 subjects were analyzed. Nasal obstruction and observed apnea were graded into 3 categories. Daytime sleepiness was assessed by the Epworth Sleepiness Scale. Results Subjects with chronic nasal obstruction had 5.22 and 2.17 times higher odds for having habitual observed apnea and excessive daytime sleepiness (EDS), respectively, compared with those without nasal obstruction ( P < 0.001). After adjusting for 3 potential confounding factors (age, sex, and body mass index) and the presence of habitual observed apnea, odds ratios for having EDS decreased, but still remained significant. Conclusion Nasal obstruction is likely to cause daytime sleepiness, at least in part, by causing sleep‐disordered breathing including apnea during sleep.

Epworth Sleepiness Scale

10.1016/j.otohns.2007.04.016

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Citations (15)

Visual Prognosis in Patients with Visual Disturbance Caused by Postoperative Paranasal Sinus Mucocele

Practica Oto-Rhino-Laryngologica (2010)

Junichi Okubo Hideaki Suzuki Nobuaki Hiraki Takuro Kitamura Nobusuke Hochi

We analyzed 19 consecutive cases of paranasal sinus mucoceles manifesting visual disturbance requiring surgery. Subjects were 12 men and 7 women aged 37 to 82 years (average; 57.4 years). Six negative prognostic factors examined were: (i) patients' age 70 years, (ii) time from onset to surgery 8 days, (iii) sphenoid sinus involvement, (iv) abnormal ocular fundus findings, (v) optic canal bone defect, and (vi) preoperative visual acuity ≤0.1. A prediction equation obtained by multivariate analysis provided highly accurate in predicting visual prognosis. We also found that factors ii), v), and vi) were mainly responsible for visual prognosis, whereas the impact of factors iii) and iv) was minor. We explored predicting more simply and feasibly visual prognosis with sufficient accuracy using the number of positive items from among the above 6 factors, using the number of those of i), ii), iv), v), and vi), or using the number of those of i), ii), v), and vi). Sensitivity/specificity was 80/93%, 80/100%, and 100/93%. We would like to stress that accurate prediction by these methods is helpful in managing paranasal sinus mucocele associated with visual disturbance.

Mucocele

Visual Disturbance

Sinus (botany)

Fundus (uterus)

Paranasal Sinus Diseases

10.5631/jibirin.103.145

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Citations (2)

Chopstick Penatration of the Parapharyngeal Space: A Case Report

Practica Oto-Rhino-Laryngologica (2010)

Tsuyoshi Inaba Tsuyoshi Udaka Yohei Kadokawa Nobuaki Hiraki Junichi Okubo

We report a rare case of chopstick penetration of the parapharyngeal space. A 48-year-old man who fell down while holding chopsticks was injured in the left temporal region, after which he reported temporal and jaw pain and trismus. The first examination found a small laceration on the temporal skin but no visible foreign body. Computed tomography (CT) showed a slender low-density material in the infratemporal fossa extending to the parapharyngeal space. After general anesthesia was administered the laceration was opened and a fragment of broken chopstick was removed. His postoperative clinical course was uneventful and pain and trismus subsided completely. Given the potentially useful clinical and radiological features of wooden foreign body penetration of the head and neck, we review their ramifications bibliographically.

Trismus

Parapharyngeal space

10.5631/jibirin.103.479

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Citations (1)