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Takuya Misugi,Takashi Juri,Koichi Suehiro,Kohei Kitada,Yasushi Kurihara,Mie Tahara,Akihiro Hamuro,Akemi Nakano,Masayasu Koyama,Takasi Mori,Daisuke Tachibana 대한산부인과학회 2022 Obstetrics & Gynecology Science Vol.65 No.4
ObjectiveThis study aimed to investigate the accuracy and precision of continuous, non-invasive blood pressure obtained usingthe ClearSight system by comparing it with invasive arterial blood pressure, and to assess the hemodynamic changesusing invasive methods and the ClearSight system in patients undergoing cesarean section. MethodsArterial pressure was measured invasively with an intra-arterial catheter and non-invasively using the ClearSightsystem during cesarean section in patients with placenta previa or placenta accreta. Blood pressure measurementsobtained using these two means were then compared. ResultsTotal 1,277 blood pressure measurement pairs were collected from 21 patients. Under Bland-Altman analysis, theClearSight system demonstrated an acceptable accuracy with a bias and standard deviation of 8.8±13.4 mmHg forsystolic blood pressure, -6.3±7.1 mmHg for diastolic blood pressure, and -2.7±8.0 mmHg for median blood pressure. Cardiac index levels were significantly elevated during fetal delivery and 5 minutes after placental removal, andsystemic vascular resistance index levels were significantly decreased during fetal delivery and 40 minutes afterplacental removal. ConclusionIn patients undergoing cesarean section, the ClearSight system showed excellent accuracy and precision compared tothat of the currently used invasive monitoring system. 영어
Biliary Peritonitis after Radiofrequency Ablation Diagnosed by Gadoxetic Acid-Enhanced MR Imaging
Akihiro Furuta,Hiroyoshi Isoda,Takashi Koyama,Giro Todo,Yukio Osaki,Kaori Togashi 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.6
This study describes the first case of biliary peritonitis after radiofrequency ablation diagnosed by magnetic resonance (MR) imaging with gadolinium ethoxybenzyl diethylenetriaminepentaacetic acid (Gd-EOB-DTPA), a hepatocyte-specific MR imaging contrast agent. The image acquired 300 minutes after the administration of Gd-EOB-DTPA was useful to make a definite diagnosis and to identify the pathway of bile leakage. It is important to decide on the acquisition timing with consideration of the predicted location of bile duct injury.
Significance of rescue hybrid endoscopic submucosal dissection in difficult colorectal cases
Hayato Yamaguchi,Masakatsu Fukuzawa,Takashi Kawai,Takahiro Muramatsu,Taisuke Matsumoto,Kumiko Uchida,Yohei Koyama,Akira Madarame,Takashi Morise,Shin Kono,Sakiko Naito,Naoyoshi Nagata,Mitsushige Sugimo 대한소화기내시경학회 2023 Clinical Endoscopy Vol.56 No.6
Background/Aims: Hybrid endoscopic submucosal dissection (ESD), in which an incision is made around a lesion and snaring is per-formed after submucosal dissection, has some advantages in colorectal surgery, including shorter procedure time and preventing per-foration. However, its value for rescue resection in difficult colorectal ESD cases remains unclear. This study evaluated the utility of res-cue hybrid ESD (RH-ESD). Methods: We divided 364 colorectal ESD procedures into the conventional ESD group (C-ESD, n=260), scheduled hybrid ESD group(SH-ESD, n=69), and RH-ESD group (n=35) and compared their clinical outcomes. Results: Resection time was significantly shorter in the following order: RH-ESD (149 [90–197] minutes) >C-ESD (90 [60–140] min-utes) >SH-ESD (52 [29–80] minutes). The en bloc resection rate increased significantly in the following order: RH-ESD (48.6%), SH-ESD (78.3%), and C-ESD (97.7%). An analysis of factors related to piecemeal resection of RH-ESD revealed that the submucosal dis-section rate was significantly lower in the piecemeal resection group (25% [20%–30%]) than in the en bloc resection group (40% [20%–60%]). Conclusions: RH-ESD was ineffective in terms of curative resection because of the low en bloc resection rate, but was useful for avoid-ing surgery.
Nakaoka, Yoshikazu,Nishida, Keigo,Narimatsu, Masahiro,Kamiya, Atsunori,Minami, Takashi,Sawa, Hirofumi,Okawa, Katsuya,Fujio, Yasushi,Koyama, Tatsuya,Maeda, Makiko,Sone, Manami,Yamasaki, Satoru,Arai, Yu American Society for Clinical Investigation 2007 The Journal of clinical investigation Vol.117 No.7
Sb NQR Study of the Filled Skutterudite CeFe4Sb12 Synthesized under High Pressure
Ko-ichi Magishi,,Masahiro Takahashi,Takahito Saito,Kuniyuki Koyama,Hitoshi Sugawara,Takashi Saito,Sho Tatsuoka,Kenya Tanaka,Hideyuki Sato 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
We report the results of Sb nuclear quadrupole resonance (NQR) measurements on the filledskutterudite CeFe4Sb12 synthesized under high pressure (HP) and compare them with those forthe sample synthesized under ambient pressure (AP) to understand the influence of the Ce-sitefilling fraction. The NQR spectra for the HP sample are much sharper than those for the APsample, suggesting that the Ce filling fraction is higher. Also, the nuclear spin-lattice relaxationrate 1/T1 follows an exponential decrease 1/T1 ∝ exp(−Δ/kBT), with the gap being Δ/kB = 270K at temperatures above 100 K, which is larger than that for the AP sample. This result suggeststhat the c-f hybridization is enhanced by increasing the Ce-site filling fraction.