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  1. Article ; Online: Gel injected via the accessory channel more efficiently secures the visual field than gel delivered via the water jet channel.

    Yano, Tomonori / Ohata, Atsushi / Hiraki, Yuji

    Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society

    2021  Volume 33, Issue 6, Page(s) 991

    MeSH term(s) Humans ; Needles ; Visual Fields ; Water
    Chemical Substances Water (059QF0KO0R)
    Language English
    Publishing date 2021-06-24
    Publishing country Australia
    Document type Letter
    ZDB-ID 1171589-3
    ISSN 1443-1661 ; 0915-5635
    ISSN (online) 1443-1661
    ISSN 0915-5635
    DOI 10.1111/den.14051
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3854: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article: Factors contributing to changes in viscosity and flow rate of a dedicated gel for gel immersion endoscopy.

    Hiraki, Yuji / Ohata, Atsushi / Yano, Tomonori / Miura, Yoshimasa / Lefor, Alan Kawarai / Yamamoto, Hironori

    Endoscopy international open

    2022  Volume 10, Issue 5, Page(s) E703–E706

    Abstract: Background and study ... ...

    Abstract Background and study aims
    Language English
    Publishing date 2022-05-13
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2761052-4
    ISSN 2196-9736 ; 2364-3722
    ISSN (online) 2196-9736
    ISSN 2364-3722
    DOI 10.1055/a-1788-9888
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Gel stored at low temperature maintains high viscosity even when injected via the water jet channel.

    Hiraki, Yuji / Ohata, Atsushi / Yano, Tomonori / Miura, Yoshimasa / Lefor, Alan Kawarai / Yamamoto, Hironori

    Endoscopy international open

    2022  Volume 10, Issue 9, Page(s) E1172–E1173

    Language English
    Publishing date 2022-09-14
    Publishing country Germany
    Document type Journal Article ; Comment
    ZDB-ID 2761052-4
    ISSN 2196-9736 ; 2364-3722
    ISSN (online) 2196-9736
    ISSN 2364-3722
    DOI 10.1055/a-1906-3713
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Factors contributing to changes in viscosity and flow rate of a dedicated gel for gel immersion endoscopy

    Hiraki, Yuji / Ohata, Atsushi / Yano, Tomonori / Miura, Yoshimasa / Lefor, Alan Kawarai / Yamamoto, Hironori

    Endoscopy International Open

    2022  Volume 10, Issue 05, Page(s) E703–E706

    Abstract: Background and study aims : Gel immersion endoscopy is a novel technique for securing the visual field during endoscopy. Clinical application of a dedicated gel for this technique with an appropriate viscosity to prevent mixing with blood and its ... ...

    Abstract Background and study aims : Gel immersion endoscopy is a novel technique for securing the visual field during endoscopy. Clinical application of a dedicated gel for this technique with an appropriate viscosity to prevent mixing with blood and its efficacy was reported. The aim of this study was to evaluate changes in gel viscosity and flow rate under different conditions.
    Methods : The viscosity of the gel after injection and flow rate were measured under various conditions changing the injection route and method. Gel viscosity was measured at 25, 10, and 4 °C.
    Results : A decrease in gel viscosity was found when the gel was injected via the water jet channel compared to the accessory channel. The flow rate and decrease in viscosity of the gel injected via the water jet channel were 220 mL/min and 63.2 %, while when injected via the accessory channel with a clip device inserted were 560 mL/min and 35.8 %. When the gel was kept at a low temperature, the viscosity increased.
    Conclusions : Gel injection via the accessory channel should be the first choice for efficient use considering the viscosity and flow rate.
    Language English
    Publishing date 2022-05-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2761052-4
    ISSN 2196-9736 ; 2364-3722 ; 2196-9736
    ISSN (online) 2196-9736
    ISSN 2364-3722 ; 2196-9736
    DOI 10.1055/a-1788-9888
    Database Thieme publisher's database

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  5. Article: Gel stored at low temperature maintains high viscosity even when injected via the water jet channel

    Hiraki, Yuji / Ohata, Atsushi / Yano, Tomonori / Miura, Yoshimasa / Lefor, Alan Kawarai / Yamamoto, Hironori

    Endoscopy International Open

    2022  Volume 10, Issue 09, Page(s) E1172–E1173

    Language English
    Publishing date 2022-09-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2761052-4
    ISSN 2196-9736 ; 2364-3722 ; 2196-9736
    ISSN (online) 2196-9736
    ISSN 2364-3722 ; 2196-9736
    DOI 10.1055/a-1906-3713
    Database Thieme publisher's database

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  6. Article: Development of a gel dedicated to gel immersion endoscopy.

    Yano, Tomonori / Ohata, Atsushi / Hiraki, Yuji / Tanaka, Makoto / Shinozaki, Satoshi / Lefor, Alan Kawarai / Yamamoto, Hironori

    Endoscopy international open

    2021  Volume 9, Issue 6, Page(s) E918–E924

    Abstract: Backgrounds and study ... ...

    Abstract Backgrounds and study aims
    Language English
    Publishing date 2021-05-27
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2761052-4
    ISSN 2196-9736 ; 2364-3722
    ISSN (online) 2196-9736
    ISSN 2364-3722
    DOI 10.1055/a-1396-4236
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Multifactorial analysis of local control and survival in patients with early glottic cancer.

    Nomura, Tsutomu / Ishikawa, Junichi / Ohki, Masafumi / Ohata, Atsushi / Araki, Ryuichiro / Kikuchi, Sigeru

    The Laryngoscope

    2019  Volume 130, Issue 7, Page(s) 1701–1706

    Abstract: Objectives: The purpose of this study is to determine the effects of various prognostic factors for early glottic cancer patients who underwent radiotherapy.: Methods: We retrospectively reviewed the all patients who were treated at our hospital for ... ...

    Abstract Objectives: The purpose of this study is to determine the effects of various prognostic factors for early glottic cancer patients who underwent radiotherapy.
    Methods: We retrospectively reviewed the all patients who were treated at our hospital for early glottic squamous cell carcinoma from 2004 to 2016. Data included patient's age, sex, T classification, tumor size, pathological grade, anterior commissure involvement, subglottic extension, laryngeal ventricle involvement, and restriction of vocal cord movement.
    Results: There were 74 patients with T1 tumors and 31 with T2 tumors. Recurrence was found in four patients with T1 and eight patients with T2. There were 99 males and six females enrolled, and the mean age was 67.5 ± 9.2 years for T1a, 67.3 ± 11.2 years for T1b, and 67.4 ± 7.9 years for T2. One patient with recurrence after 1 month was thought to have a residual tumor. The 5-year overall survival (OS) rate and the 5-year disease-specific survival (DSS) rate for T1-T2 patients were both 100%. The rate of larynx preservation was 94.6% for T1 and 74.2% for T2. A univariate analysis showed that the effective factors were age, T, size, SE. A multivariate logistic regression analysis showed that age influenced the recurrence status. Size is also suspected to be a prognostic factor.
    Conclusions: This study revealed that the effective factors were age, T, size, and SE.
    Level of evidence: 4 Laryngoscope, 130:1701-1706, 2020.
    MeSH term(s) Adult ; Aged ; Carcinoma, Squamous Cell/mortality ; Carcinoma, Squamous Cell/pathology ; Carcinoma, Squamous Cell/radiotherapy ; Factor Analysis, Statistical ; Female ; Glottis/pathology ; Humans ; Laryngeal Neoplasms/mortality ; Laryngeal Neoplasms/pathology ; Laryngeal Neoplasms/radiotherapy ; Logistic Models ; Male ; Middle Aged ; Neoplasm Recurrence, Local/mortality ; Neoplasm Recurrence, Local/pathology ; Neoplasm Staging ; Prognosis ; Radiotherapy/mortality ; Retrospective Studies ; Survival Rate ; Treatment Outcome
    Language English
    Publishing date 2019-08-09
    Publishing country United States
    Document type Evaluation Study ; Journal Article
    ZDB-ID 80180-x
    ISSN 1531-4995 ; 0023-852X
    ISSN (online) 1531-4995
    ISSN 0023-852X
    DOI 10.1002/lary.28240
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Ul II Zs.82: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Temporal bone histopathology case of the month. First branchial cleft anomaly with an orifice in the bony external auditory canal accompanied by contralateral middle ear cholesteatoma.

    Ohki, Masafumi / Baba, Yuka / Ohata, Atsushi

    Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology

    2015  Volume 36, Issue 2, Page(s) e70–2

    MeSH term(s) Cholesteatoma, Middle Ear/pathology ; Ear Canal/abnormalities ; Ear Canal/pathology ; Female ; Humans ; Middle Aged ; Temporal Bone/abnormalities ; Temporal Bone/pathology
    Language English
    Publishing date 2015-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2036790-9
    ISSN 1537-4505 ; 1531-7129
    ISSN (online) 1537-4505
    ISSN 1531-7129
    DOI 10.1097/MAO.0000000000000411
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1554: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  9. Article: [A Clinical Study of Acute Epiglottitis].

    Tanaka, Sunao / Kikuchi, Shigeru / Ohata, Atsushi / Tsutsumi, Takeshi / Ohki, Masafumi

    Nihon Jibiinkoka Gakkai kaiho

    2016  Volume 118, Issue 11, Page(s) 1301–1308

    Abstract: We carried out a retrospective review of 285 cases of acute epiglottitis (180 males, 105 females, mean age 49.6 years) that required inpatients hospital care between 1998 and 2014. All the patients complained of sore throat, and 62 patients complained of ...

    Abstract We carried out a retrospective review of 285 cases of acute epiglottitis (180 males, 105 females, mean age 49.6 years) that required inpatients hospital care between 1998 and 2014. All the patients complained of sore throat, and 62 patients complained of respiratory discomfort; 17 patients had severe dyspnea, and 27 patients required airway management (tracheotomy in 25, cricothyroidotomy in 2 patients). All the patients survived. As acute epiglottitis can cause rapidly progressive airway obstruction and death, emergent airway management should be undertaken in patients with dyspnea. However, it is difficult to determine the indications for prophylactic respiratory management in patients without dyspnea. Therefore, the disease severity of the epiglottitis was evaluated on a five-grade scale according to the degree of swelling of both the epiglottis and the arytenoids. Although prospective evaluation is necessary, this scoring system may be beneficial to determine the indication for airway management, because all of the patients who complained of severe dyspnea or underwent airway management had grade 4 or 5 disease, while none of the patients with grade 1-3 disease required tracheotomy or cricothyroidotomy. Moreover, we compared the white blood cell count, body temperature, serum CRP and the interval from the onset between the group that required airway management and the group that did not require airway management. The white blood-cell count and body temperature were significantly higher, and the interval from the onset was significantly shorter in the group that required airway management than in the group that did not require airway management; however, the serum CRP level did not differ between the two groups.
    MeSH term(s) Acute Disease ; Adult ; Aged ; Airway Obstruction/etiology ; Body Temperature ; Dyspnea/etiology ; Epiglottitis/complications ; Epiglottitis/diagnosis ; Epiglottitis/epidemiology ; Epiglottitis/therapy ; Female ; Humans ; Intubation, Intratracheal ; Leukocyte Count ; Male ; Middle Aged ; Pain ; Retrospective Studies ; Severity of Illness Index ; Time Factors ; Tracheotomy
    Language Japanese
    Publishing date 2016-01-30
    Publishing country Japan
    Document type Clinical Study ; English Abstract ; Journal Article
    ZDB-ID 968067-6
    ISSN 0030-6622
    ISSN 0030-6622
    DOI 10.3950/jibiinkoka.118.1301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Development of a gel dedicated to gel immersion endoscopy

    Yano, Tomonori / Ohata, Atsushi / Hiraki, Yuji / Tanaka, Makoto / Shinozaki, Satoshi / Lefor, Alan Kawarai / Yamamoto, Hironori

    Endoscopy International Open

    2021  Volume 09, Issue 06, Page(s) E918–E924

    Abstract: Backgrounds and study aims : Gel immersion endoscopy is a novel technique to secure the visual field during endoscopy. The aim of this study was to develop a dedicated gel for this technique.: Methods : To identify appropriate viscoelasticity and ... ...

    Abstract Backgrounds and study aims : Gel immersion endoscopy is a novel technique to secure the visual field during endoscopy. The aim of this study was to develop a dedicated gel for this technique.
    Methods : To identify appropriate viscoelasticity and electrical conductivity, various gels were examined. Based on these results, the dedicated gel “OPF-203” was developed. Efficacy and safety of OPF-203 were evaluated in a porcine model.
    Results : In vitro experiments showed that a viscosity of 230 to 1900 mPa·s, loss tangent (tanδ) ≤ 0.6, and hardness of 240 to 540 N/cm 2 were suitable. Ex vivo experiments showed electrical conductivity ≤ 220 μS/cm is appropriate. In vivo experiments using gastrointestinal bleeding showed that OPF-203 provided clear visualization compared to water. After electrocoagulation of gastric mucosa in OPF-203, severe coagulative necrosis was not observed in the muscularis but limited to the mucosa.
    Conclusions : OPF-203 is useful for gel immersion endoscopy.
    Language English
    Publishing date 2021-05-27
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2761052-4
    ISSN 2196-9736 ; 2364-3722 ; 2196-9736
    ISSN (online) 2196-9736
    ISSN 2364-3722 ; 2196-9736
    DOI 10.1055/a-1396-4236
    Database Thieme publisher's database

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