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Featured researches published by Yuji Orita.


The Kurume Medical Journal | 2015

Clinical Usefulness of Bakri Balloon Tamponade in the Treatment of Massive Postpartum Uterine Hemorrhage

Sayori Nagai; Hiroaki Kobayashi; Tomomi Nagata; Sayuri Hiwatashi; Toshihiko Kawamura; Daisaku Yokomine; Yuji Orita; Toshimichi Oki; Mitsuhiro Yoshinaga; Tsutomu Douchi

Intrauterine globe-shaped metreurynter tamponade has been used for some time to treat massive postpartum hemorrhage (PPH). More recently, the Bakri balloon has come into use to treat PPH. It is made of silicon, possesses a drainage lumen, and has a sausage-like spindle shape. The aim of the present study was to investigate the clinical usefulness of Bakri balloon tamponade for massive PPH. Subjects in the present study comprised 5 patients with uterine atony, 3 with placenta previa, and 2 with low-lying placenta. All patients exhibited massive PPH and resistance to conventional hemostatic managements. Bakri balloon tamponade was appliedto these 10 patients. The mean amounts of uterine bleeding (average ± SD) before and after Bakri insertion were2,732 ± 1,397 mL and 380 ± 376 mL, respectively. The median (third-first quartile ranges) volume of salineinflating the balloon was 200 mL (300-150 mL). The median (third-first quartile ranges) indwelling duration of Bakri balloon was 24 hours (24-11 hrs). The overall success rate of Bakri balloon tamponade was 90% (9/10).There were no cases of slipping out or complications regarding balloon placement. Our findings suggest that Bakri balloon tamponade may be applied to the treatment of massive PPH in uterine atony and placenta previa.The Bakri balloon appears to have the following merits: (1) easy insertion into the uterine cavity and low rate of slipping out, (2) proper conformability to the hemorrhagic area due to its spindle shape, (3) ability to monitor blood loss through the drainage lumen even after insertion.


Journal of Minimally Invasive Gynecology | 2015

A Very Rare Case of Endometriosis Presenting With Massive Hemoperitoneum

Shinichi Togami; Hiroaki Kobayashi; Maki Haruyama; Yuji Orita; Masaki Kamio; Tsutomu Douchi

Endometriosis is a cause of acute abdomen because of the leakage or rupture of endometriotic cyst and tubo-ovarian abscess. However, massive hemoperitoneum as a cause of acute abdomen with endometriosis is very rare. We herein present a case of a 48-year-old woman who was urgently referred to our clinic with colic, abdominal distension, and hypovolemic shock during menstruation. Ultrasonography revealed massive hemorrhagic ascites. Exploratory laparoscopy was urgently performed to achieve hemostasis. The volume of hemoperitoneum evacuated from the pelvis was 1,890 mL. Although the uterus and bilateral ovaries were normal, fresh bleeding was observed from endometriosis on the left cul-de-sac peritoneum, and hemostasis was successfully performed. The potential occurrence of hemorrhagic shock associated with endometriosis, depending on the implantation site, needs to be recognized.


Journal of Obstetrics and Gynaecology Research | 2013

Decreasing full‐term neonatal birthweight over the past 2 decades in a single institute in Japan

Yuji Orita; Masaki Tajima; Sayuri Hiwatashi; Sayori Terao; Ichiro Iwamoto; Toshimichi Oki; Tsutomu Douchi

The aim of this study was to investigate whether full‐term neonatal birthweight is decreasing or not.


Journal of Obstetrics and Gynaecology Research | 2011

Clinical outcome of stage Ia1 squamous cell carcinoma of the uterine cervix and pathological findings of initial conization.

Mitsuhiro Yoshinaga; Tomonori Hamada; Yuji Orita; Nao Yoshitomi; Takashi Matsuo; Takahiro Tsuji; Kazuhiro Tabata; Tsutomu Douchi

Aim:  The present study investigated the clinical outcome of stage Ia1 squamous cell carcinoma (SCC) of the uterine cervix at a single institute.


PLOS ONE | 2016

Predictive Factors for Efficacy and Safety of Prophylactic Theophylline for Extubation in Infants with Apnea of Prematurity.

Tomoko Kondo; Yuki Kondo; Yuji Orita; Fumi Mitarai; Yoichi Ishitsuka; Mitsuru Irikura; Yoshihiro Shimodozono; Tsutomu Douchi; Yasuo Takeda; Tetsumi Irie

Purpose This study aimed to evaluate predictive factors involved in efficacy and safety in Japanese infants who received theophylline therapy to prevent apnea of prematurity (AOP) after weaning from mechanical ventilation. Methods We retrospectively reviewed the medical records of infants who were administered intravenous aminophylline (theophylline ethylenediamine) for AOP at the neonatal intensive care unit, Kagoshima University Hospital, Japan, between January 2009 and June 2013. Results A total of 100 infants were evaluated as two separate groups in terms of efficacy and safety of theophylline. Sixty-seven (67.0%) infants had effective theophylline therapy. Multivariate logistic regression analysis showed that gestational age at birth was significant, with an odds ratio of 0.59 (p < 0.001). Receiver operating characteristic analysis showed that the cut-off value was 31.1 weeks old for predicting the efficacy of theophylline (specificity, 66.7%; sensitivity, 86.6%; p < 0.001; area under the curve, 0.750; 95% confidence interval, 0.45–0.74). Adverse reactions were identified in 21 (21.0%) infants. Multivariate logistic regression analysis showed that the number of days of theophylline administration from birth was associated with an increased risk of adverse reactions after theophylline administration (p = 0.01). Conclusions Physicians need to be aware of the possibility that theophylline fails to produce therapeutic effects for extubation in infants aged less than 31.1 weeks old, and adverse reactions can easily develop when theophylline is administered soon after birth.


日本産科婦人科學會雜誌 | 2016

ISP-9-1 A new educational program of operative procedure with a slim and rigid hysteroscopy(Group 9 Oncology 1,International Session Poster)

Akio Tokudome; Toshimichi Oki; Chie Oki; Yuji Orita; Hideki Yamazaki; Tsutomu Douchi


日本産科婦人科學會雜誌 | 2016

ISP-34-1 A selective hysteroscopic hydro-tubation is a useful item for tubal occlusion therapy(Group 34 Infertility/Recurrent Pregnancy Loss,International Session Poster)

Chie Oki; Toshimichi Oki; Yuji Orita; Akio Tokudome; Masanobu Itoh; Hideki Yamazaki; Tsutomu Douchi


鹿児島産科婦人科学会雑誌 | 2015

Spontaneous ovarian hyperstimulation syndrome that persisted for three months after the delivery of twins

Tomomi Nagata; Shinichi Togami; Sayuri Hiwatashi; Mika Sakihama; Yuji Orita; Ichiro Iwamoto; Toshimichi Oki; Hiroaki Kobayashi; Tsutomu Douchi


日本産科婦人科學會雜誌 | 2015

ISP-14-3 Transient fetal goiter and hypothyroidism caused by maternal Potassium Iodine : Efficiency of 3-Dimentional Sonography(Group 14 Perinatology 4,IS Poster,International Session)

Yuji Orita; Sayuri Hiwatashi; Toshihiko Kawamura; Hiroaki Kobayashi; Tsutomu Douchi


日本産科婦人科學會雜誌 | 2013

ISP-2-4 Decreasing full-term neonatal birth weight over the past two decades in a single institute in Japan(Group 2 Perinatology 2,IS Poster,International Session)

Yuji Orita; Masaki Tajima; Sayuri Hiwatashi; Sayori Terao; Ichiro Iwamoto; Toshimichi Oki; Tsutomu Douchi

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