Ryoichi Ando
Memorial Hospital of South Bend
Vitamin D and neurologyInternal medicineUrologyEndocrinologySurgeryCardiologyIntensive care medicineImmunologyHyperphosphatemiaFibrinolysisHemodialysisKidney diseaseSecondary hyperparathyroidismHemoglobinDialysisParathyroid hormoneChronic hemodialysisIn patientDialysis patientsCalciumNephrologyMedicineGastroenterology
76Publications
14H-index
801Citations
Publications 76
Newest
#1Yuka Sugawara (UTokyo: University of Tokyo)H-Index: 1
#2Masao Iwagami (Lond: University of London)H-Index: 9
Last. Masaomi Nangaku (UTokyo: University of Tokyo)H-Index: 80
view all 12 authors...
BACKGROUND: There are no reports of a large-scale survey on the infection prevention measures against coronavirus disease 2019 (COVID-19) in nephrology facilities. This study investigated the facility-level nephrology practices adopted during the COVID-19 pandemic and their associated challenges. Additionally, the treatment patterns and outcomes of chronic kidney disease (CKD) patients with COVID-19 were reviewed. METHODS: We conducted a nationwide questionnaire survey of 704 educational facilit...
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#1You Komatsuzaki (Jikei University School of Medicine)
#2Masato Ikeda (Jikei University School of Medicine)H-Index: 13
Last. Takashi Shigematsu (Wakayama Medical University)H-Index: 40
view all 16 authors...
The traditional anion gap (AG) equation is widely used, but its misdiagnosis in end-stage kidney disease (ESKD) patients has not been investigated fully. Diagnostic accuracy to detect high AG was cross-sectionally evaluated using 3 AG equations in 1733 ESKD patients with an eGFR less than 15 mL/min/1.73 m2. The prevalence of high AG was 67.9%, 92.1% and 97.4% by the traditional, albumin-adjusted AG (aAG) and full AG equations, respectively. The sensitivity, specificity, accuracy and Kappa coeffi...
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Background Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has become a global pandemic affecting a variety of medical treatments, including hemodialysis. This study aims to investigate the implementation of infection control measures, to examine the shortage of personal protective equipment (PPE) and disinfectants, and to quantify the number of nosocomial COVID-19 transmissions in hemodialysis facilities in Japan during the pandemic. ...
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#1Kan KikuchiH-Index: 10
#2Masaomi Nangaku (UTokyo: University of Tokyo)H-Index: 80
Last. Tadao Akizawa (Memorial Hospital of South Bend)H-Index: 1
view all 11 authors...
In Japan, the first case of COVID-19 in dialysis patients was reported on March 1, 2020. A total of 31 cases were reported by April 10, and it increased to 95 by May 15. Thereafter, with the rapid increase in the number of COVID-19 cases in the general population since late March, there was a not surprising increase in the number of COVID-19 cases in dialysis patients. The mortality rate is 16.2% (16/99 cases) in dialysis patients, which is higher than 5.3% (874/16532 cases) in the general popul...
22 CitationsSource
#1Ryoichi AndoH-Index: 14
#2Yasuhiro AsahinaH-Index: 37
Last. Hiroshi Yotsuyanagi (UTokyo: University of Tokyo)H-Index: 41
view all 17 authors...
The Drafting Committee for Hepatitis Management Guidelines established by the Japan Society of Hepatology published the first version of the Guidelines for the Management of Hepatitis B in 2013 (first English version in 2014), and has since been publishing updates to the Guidelines as new drugs become available, with the latest original Japanese version being Version 3.1. Herein, the Drafting Committee publishes the second English version that contains all the changes made since the first Englis...
14 CitationsSource
#1Ryoichi AndoH-Index: 14
#2Yasuhiro Asahina (Tokyo Medical and Dental University)H-Index: 37
Last. Hiroshi Yotsuyanagi (UTokyo: University of Tokyo)H-Index: 41
view all 17 authors...
The Drafting Committee for Hepatitis Management Guidelines established by the Japan Society of Hepatology drafted the first version of the clinical practice guidelines for the management of hepatitis C virus (HCV) infection in 2012. Since then, we have been publishing updates as new drugs for hepatitis C become available and new indications for existing drugs are added. The new approval of sofosbuvir/velpatasvir prompted us to publish the seventh version of the guidelines in Japanese in March 20...
9 CitationsSource
#1Takashi AkibaH-Index: 67
#2Keitaro Yokoyama (Jikei University School of Medicine)H-Index: 29
Last. Tadao Akizawa (Showa University)H-Index: 62
view all 8 authors...
Calcium carbonate is a first-line therapy for hyperphosphatemia in hemodialysis patients but is associated with progressive coronary and aortic calcification. Sevelamer compounds are alternatives to calcium-containing phosphate binders as they contain lower calcium levels. The sevelamer compound, bixalomer, is a calcium-free insoluble polymer that has been shown to be effective and safe in comparison with calcium carbonate. We therefore compared the effect of bixalomer vs calcium carbonate on co...
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#1Toshihide Hayashi (Toho University)H-Index: 8
#2Yuri Tanaka (Toho University)H-Index: 11
Last. Nobuhiko Joki (Toho University)H-Index: 17
view all 16 authors...
Objectives High prevalence of iron deficiency (ID) and cardiomyopathy have been observed in patients with end-stage kidney disease (ESKD). Our objective was to clarify associations between ID and cardiac remodeling in patients with ESKD. Design and Methods A cross-sectional study was conducted using 1974 Japanese patients with ESKD at the initiation of maintenance dialysis. Levels of hemoglobin (Hb), iron status, and cardiac enlargement as assessed by the cardiothoracic ratio (CTR) were determin...
1 CitationsSource
#1J-David Investigators (OCU: Osaka City University)H-Index: 1
#2Tetsuo Shoji (OCU: Osaka City University)H-Index: 74
Last. Mitsuru Fukui (OCU: Osaka City University)H-Index: 25
view all 62 authors...
Importance Patients with chronic kidney disease have impaired vitamin D activation and elevated cardiovascular risk. Observational studies in patients treated with hemodialysis showed that the use of active vitamin D sterols was associated with lower risk of all-cause mortality, regardless of parathyroid hormone levels. Objective To determine whether vitamin D receptor activators reduce cardiovascular events and mortality in patients without secondary hyperparathyroidism undergoing hemodialysis....
27 CitationsSource
#1Masato Ikeda (Jikei University School of Medicine)H-Index: 13
#2Yoshimi Ueda (Jikei University School of Medicine)H-Index: 1
Last. Takashi Shigematsu (Wakayama Medical University)H-Index: 40
view all 15 authors...
Background Nausea is a major uremic symptom and a frequent indication for starting dialysis. However, preventive medication for uremic nausea has not yet been identified. Vitamin D receptor activators (VDRAs) may prevent uremic nausea via their pleiotropic actions. The objective of this study was to explore whether VDRA administration during the predialysis period is associated with a reduced prevalence of uremic nausea just prior to beginning dialysis.
1 CitationsSource