Nobuo Waguri

Dr. Nobuo Waguri


Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 March 2012 in Journal of Vascular and Interventional Radiology
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Journal Article
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NWNobuo Waguri
Nobuo Waguri
MHMasahiro Hayashi
Masahiro Hayashi
TYTakeshi Yokoo
Takeshi Yokoo
RSRie Sato
Rie Sato
YAYoshihisa Arao
Yoshihisa Arao
TSTakeshi Suda
Takeshi Suda

27 June 2021 in World Journal of Hepatology
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Journal Article
Open access
NWNobuo Waguri
Nobuo Waguri
AOAkihiko Osaki
Akihiko Osaki
YWYusuke Watanabe
Yusuke Watanabe
Balloon-occluded retrograde transvenous obliteration for treatment of gastric varices

9 April 2015 in United European Gastroenterology Journal
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Journal Article
Open access
NWNobuo Waguri
Nobuo Waguri
AOAkihiko Osaki
Akihiko Osaki
SIShunzo Ikarashi
Shunzo Ikarashi
MOMasahiro Ogawa
Masahiro Ogawa
NKNaosuke Kuraoka
Naosuke Kuraoka
KIKentarou Igarashi
Kentarou Igarashi
We previously reported the techniques and usefulness of simultaneous combined balloon-occluded retrograde transvenous obliteration (B-RTO) and partial splenic embolization (PSE), based on the hypothesis that concomitant PSE can diminish the increase in portal venous pressure after B-RTO. After experiencing more cases and performing longer-term follow-up, we re-evaluated the efficacy of simultaneous combined B-RTO and PSE for gastric fundal varices (GVs). We performed B-RTO in 36 consecutive patients treated for GVs from 2005 to 2013. Twenty-three patients underwent simultaneous combined B-RTO and PSE (Group 1) and 13 underwent B-RTO monotherapy (Group 2). The outcomes were retrospectively evaluated. There were no significant differences in baseline characteristics between the two groups except that the splenic volumes were larger in Group 1 than 2. B-RTO was technically successful in 21 of 23 patients (91.3%) in Group 1 and in 12 of 13 patients (92.3%) in Group 2. In all patients with ruptured GVs (six in Group 1 and five in Group 2), complete hemostasis was obtained by B-RTO. Exacerbation of esophageal varices was significantly less frequent in Group 1 than 2 (p = 0.0017). Concomitant PSE with B-RTO may contribute to prevention of the exacerbation of esophageal varices after B-RTO.


13 November 2021 in JGH Open
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Journal Article
Open access
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NWNobuo Waguri
Nobuo Waguri
AOAkihiko Osaki
Akihiko Osaki
YWYusuke Watanabe
Yusuke Watanabe
TMTsuyoshi Matsubara
Tsuyoshi Matsubara
SYShun Yamazaki
Shun Yamazaki
KFKouichi Furukawa
Kouichi Furukawa
Background and Aim: Balloon‐occluded retrograde transvenous obliteration (BRTO) has been widely adopted for the management of gastric fundal varices (GVs). There are a few reports that BRTO leads to the improvement of mid‐term and long‐term hepatic functional reserve (HFR). We retrospectively investigated the long‐term effect on HFR and prognosis among patients who had undergone BRTO for GVs.Methods: This single‐center, retrospective study included 57successful patients out of 60 patients who underwent BRTO for GVs from December 2005 to September 2018. We examined the indicators of HFR (e.g., encephalopathy and ascites statuses, serum total bilirubin and albumin levels, % prothrombin time, and Child–Pugh and albumin–bilirubin [ALBI] scores) during 3 years of follow‐up after BRTO. We analyzed survival using the Kaplan–Meier method and identified the independent prognostic factors via multivariate analyses.Results: GVs disappeared in all patients who were successfully treated by BRTO. At 3 years after BRTO, serum albumin levels were significantly elevated (from 3.3 to 4.0 g/dL, P = 0.008), while Child–Pugh and ALBI scores were significantly decreased (from 7.0 to 5.7, P = 0.043, and from −1.94 to −2.60, P = 0.006, respectively). The median survival time among all patients was 2207 days; the survival rates after BRTO were 87.0% at 1 year, 81.8% at 3 years, 67.3% at 5 years, and 44.1% at 10 years. Multivariate analyses revealed that ascites, hepatic encephalopathy, and malignant neoplasms were independently associated with poor prognosis.Conclusion: BRTO for GVs has a favorable effect on long‐term HFR.

15 July 2022 in JGH Open
Verified
Journal Article
Open access
NKNaruhiro Kimura
Naruhiro Kimura
TSToru Setsu
Toru Setsu
YAYoshihisa Arao
Yoshihisa Arao
NSNorihiro Sakai
Norihiro Sakai
YWYusuke Watanabe
Yusuke Watanabe
STShuji Terai
Shuji Terai
Background and Aim: Symptoms of primary biliary cholangitis (PBC) frequently impair one's quality of life (QOL). Nonetheless, with improved treatment, the prognosis of PBC also improves. QOL plays an important role in patients with PBC. In this study, we aimed to reevaluate the transition of new symptom development in PBC and its predictive factors.Methods: This retrospective multicenter study enrolled 382 patients with PBC for symptom analysis. The impact of a newly developed symptom on PBC prognosis was investigated by Kaplan–Meier analysis with propensity score matching and logistic progression analysis.Results: The cumulative risk of developing a new symptom after 10 and 20 years of follow‐up was 7.6 and 28.2%, and specifically that of pruritus, which was the most common symptom, was 6.7 and 23.3%, respectively. In Cox hazard risk analysis, serum Alb level (hazard ratio [HR], 1.097; 95% confidence interval [CI], 1.033–1.165; P = 0.002), the serum D‐Bil level (HR, 6.262; 95% CI, 2.522–15.553, P < 0.001), and Paris II criteria (HR, 0.435; 95% CI, 0.183–1.036; P = 0.037) were significant independent predictors of a new symptom. Kaplan–Meier analysis showed that the overall survival and liver‐related death were not significant between patients with and without a new symptom.Conclusion: The cumulative risk of new symptom development is roughly 30% 20 years after diagnosis and could be predicted by factors including serum albumin levels, serum D‐Bil level, and Paris II criteria.