【2022 年】
1．Challenges in Help-Seeking Behaviors among Rural Older People Mitigated through Family
Physician-Driven Outreach: A Systematic Review.
Ryuichi Ohta, Takuji Katsube, Chiaki Sano
International journal of environmental research and public health 19(24) 2022 年 12 月 18 日
2 ． Association between Survival Duration of Older Patients with Advanced Unresectable
Pancreatic Cancer and Appetite Loss: A Retrospective Cohort Study.
Ryuichi Ohta, Yoshihiro Moriwaki, Chiaki Sano
Healthcare (Basel, Switzerland) 10(12) 2022 年 12 月 14 日
3．Seronegative Rheumatoid Arthritis in an Elderly Patient With Anemia: A Case Report.
Kaho Aoe, Yuta Horinishi, Chiaki Sano, Ryuichi Ohta
Cureus 14(12) e32239 2022 年 12 月
4．Tuberculous Pleurisy Diagnosed From Massive Pleural Effusion in an Older Patient With No
History of Tuberculosis.
Miki Nanyoshi, Shiho Amano, Taichi Fujimori, Chiaki Sano, Ryuichi Ohta
Cureus 14(12) e32333 2022 年 12 月
5．Perspectives on Collaboration between Physicians and Nurse Practitioners in Japan: A CrossSectional Study.
Mari Igarashi, Ryuichi Ohta, Akinori Nakata, Yasuo Kurita, Yuta Mitobe, Miho Hayakawa,Tsutomu Yamazaki, Harumi Gomi
Nursing reports (Pavia, Italy) 12(4) 894-903 2022 年 11 月 21 日
6．Factors Related to Percutaneous Coronary Intervention among Older Patients with Heart
Disease in Rural Hospitals: A Retrospective Cohort Study
Fumiko Yamane, Ryuichi Ohta, Chiaki Sano
BioMedInformatics 2(4) 593-602 2022 年 11 月
7．Implementation of the Principles of Family Medicine in Modern Family Medicine Education
Needing System-Specific Approaches.
Ryuichi Ohta, Chiaki Sano
Cureus 14(11) e31177 2022 年 11 月

8．Associations between Perception of Help-Seeking Behaviors and Quality of Life among Older
People in Rural Communities: A Cross-Sectional Study.
Ryuichi Ohta, Chiaki Sano
International journal of environmental research and public health 19(20) 2022 年 10 月 15 日
9．Risk Factors for Delayed Diagnosis of Acute Cholecystitis among Rural Older Patients: A
Retrospective Cohort Study.
Hirotaka Ikeda, Ryuichi Ohta, Chiaki Sano
Medicina (Kaunas, Lithuania) 58(10) 2022 年 10 月 4 日
10．Family Physicians as System-Specific Specialists in Japan's Aging Society.
Ryuichi Ohta, Chiaki Sano
Cureus 14(10) e30811 2022 年 10 月
11 ． Possible Macrophage Activation Syndrome Caused by Endoscopic Retrograde
Cholangiopancreatography for Bacteremia Due to Chronic Cholelithiasis.
Hiroyuki Furuta, Yudai Tanaka, Tsuyoshi Mishiro, Chiaki Sano, Ryuichi Ohta
Cureus 14(10) e30932 2022 年 10 月
12．Eosinophilic Gastroenteritis in the Small Intestine Mimicking Eosinophilic GranulomatosisWith Polyangiitis in a Young Male Patient.
Maika Hayashi, Ryuichi Ohta, Fumiko Yamane, Tsuyoshi Mishiro, Chiaki Sano
Cureus 14(10) e29813 2022 年 10 月
13．Gallstone Hepatitis Caused by Transient Common Bile Duct Obstruction in a Middle-AgedWoman.
Kotaro Murakami, Yudai Tanaka, Tsuyoshi Mishiro, Chiaki Sano, Ryuichi Ohta
Cureus 14(10) e30192 2022 年 10 月
14．Infection Route of Parvimonas micra: A Case Report and Systematic Review.
Kai Shimizu, Yuta Horinishi, Chiaki Sano, Ryuichi Ohta
Healthcare (Basel, Switzerland) 10(9) 2022 年 9 月 8 日
15．Anti-Mi2 Antibody Positive Dermatomyositis With Hyper-Elevated Creatine Kinase: A Case
Report.
Ryuichi Ohta, Naho Yoshioka, Fumiko Yamane, Maika Hayashi, Chiaki Sano
Cureus 14(9) e28899 2022 年 9 月

16．Refractory Immunoglobulin A (IgA) Vasculitis in an Elderly Patient: A Case Report.
Nozomi Nishikura, Ryuichi Ohta, Noritaka Katagiri, Tatsuhiko Okayasu, Chiaki SanoCureus 14(9) e28996 2022 年 9 月
17．Hypoglossal Nerve Palsy Following COVID-19 Vaccination in a Young Adult Complicatedby Various Medicines.
Tatsuhiko Okayasu, Ryuichi Ohta, Fumiko Yamane, Satoshi Abe, Chiaki Sano
Cureus 14(9) e29212 2022 年 9 月
18．Relationship between Dysphagia and Home Discharge among Older Patients Receiving
Hospital Rehabilitation in Rural Japan: A Retrospective Cohort Study.
Ryuichi Ohta, Emily Weiss, Magda Mekky, Chiaki Sano
International journal of environmental research and public health 19(16) 2022 年 8 月 16 日
19．Doctor Clerk Implementation in Rural Community Hospitals for Effective Task Shifting ofDoctors: A Grounded Theory Approach.
Ryuichi Ohta, Miyuki Yawata, Chiaki Sano
International journal of environmental research and public health 19(16) 2022 年 8 月 12 日
20．Secondary Failure of Tocilizumab in Treating Elderly-Onset Rheumatoid Arthritis With
Systemic Symptoms Complicated by Diverticulum Perforation.
Soshi Takagi, Yumi Naito, Chiaki Sano, Ryuichi Ohta
Cureus 14(8) e28357 2022 年 8 月
21．Autoimmune Vasculitis Causing Acute Bilateral Lower Limb Paralysis.
Ayuko Tokonami, Ryuichi Ohta, Noritaka Katagiri, Naho Yoshioka, Fumiko Yamane, ChiakiSano
Cureus 14(8) e27651 2022 年 8 月
22．Seronegative Ocular Myasthenia Gravis in an Older Woman With Transient Dizziness andDiplopia.
Naho Yoshioka, Yumi Naito, Keisuke Sano, Chiaki Sano, Ryuichi Ohta
Cureus 14(8) e27826 2022 年 8 月

23．Device-Related Thrombotic Microangiopathy in an Elderly Patient With a History of AorticSurgery.
Chihiro Tanaka, Yumi Naito, Shoichi Suehiro, Chiaki Sano, Ryuichi Ohta
Cureus 14(8) e27937 2022 年 8 月
24．Localized Pancreatitis in an Elderly Patient Without Suspected Etiology.
Yutaro Yamamoto, Ryuichi Ohta, Yudai Tanaka, Go Mishiro, Chiaki Sano
Cureus 14(8) e28034 2022 年 8 月
25．Students’ Learning on Sustainable Development Goals through Interactive Lectures andFieldwork in Rural Communities: Grounded Theory Approach
Ryuichi Ohta, Akiko Yata, Chiaki Sano
Sustainability 14(14) 2022 年 7 月
26．Peripheral T-cell Lymphoma With Acute Exacerbating Fatigue and Chest Pain: A Case
Report.
Ryuichi Ohta, Nozomi Nishikura, Chiaki Sano
Cureus 14(7) e27415 2022 年 7 月
27．Giant Cell Arteritis Mimicking Polymyalgia Rheumatica: A Challenging Diagnosis.
Ryuichi Ohta, Tatsuhiko Okayasu, Noritaka Katagiri, Takafumi Yamane, Minami Obata,
Chiaki Sano
Cureus 14(7) e27517 2022 年 7 月
28．A Case of Legionella Pneumonia in an Older Patient Without Typical Exposure to a
Susceptive Environment.
Yasuhisa Nakano, Kota Saka, Fumiko Yamane, Chiaki Sano, Ryuichi Ohta
Cureus 14(7) e27541 2022 年 7 月
29 ． Hashimoto Encephalopathy of a Middle-Aged Man With Progressive Symptoms ofDementia.
Noritaka Katagiri, Ryuichi Ohta, Fumiko Yamane, Chiaki Sano
Cureus 14(7) e27518 2022 年 7 月

30．Rural Easy Japanese as a Method of Mitigating Language Barriers Among Foreigners
Seeking Medical Care in Rural Japan.
Ryuichi Ohta, Chiaki Sano
Cureus 14(7) e26693 2022 年 7 月
31．Food Aspiration Induced Hypoxic Encephalopathy Leading to Status Epilepticus.
Kenichi Oshikiri, Ryuichi Ohta, Chiaki Sano
Cureus 14(7) e26766 2022 年 7 月
32．Iliopsoas Pyomyositis With Bacteremia at an Early Stage of Presentation in a Temperate
Region.
Shiho Amano, Ryuichi Ohta, Chiaki Sano
Cureus 14(7) e26854 2022 年 7 月
33．The Importance of "Easy Japanese": Communicating Health Information to Foreigners inJapan.
Remi Oi, Ryuichi Ohta, Yukiko Shiba, Chiaki Sano
Cureus 14(7) e27036 2022 年 7 月
34．Coexistence of Pancytopenia and Myositis After Developing COVID-19.
Tatsuhiko Okayasu, Ryuichi Ohta, Mari Igarashi, Yasuo Kurita, Miho Hayakawa, Chiaki Sano
Cureus 14(7) e26978 2022 年 7 月35．Rebuilding Social Capital through Osekkai Conferences in Rural Communities: A Social
Network Analysis.
Ryuichi Ohta, Koichi Maiguma, Akiko Yata, Chiaki Sano
International journal of environmental research and public health 19(13) 2022 年 6 月 28 日
36．Oral Care Awareness and Factors Related to the Burden of Nurses at a Community Hospitalin Japan.
Takashi Koike, Ryuichi Ohta, Yuhei Matsuda, Chiaki Sano, Takahiro Kanno
Healthcare (Basel, Switzerland) 10(6) 2022 年 6 月 9 日
37．Bedside Teaching in Rural Family Medicine Education in Japan.
Ryuichi Ohta, Chiaki SanoInternational journal of environmental research and public health 19(11) 2022 年 6 月 2 日

38．Adult-Onset Still's Disease With Severe Hyperferritinemia and the Asian Salmon-Pink Rash:
A Case Report.
Toshiki Fukunaga, Ryuichi Ohta, Fumiko Yamane, Chiaki Sano
Cureus 14(6) e26257 2022 年 6 月
39．Inquiry Into Physicians' Scope of Practice in Japanese Rural Hospitals During the COVID19 Pandemic: A Serial Cross-Sectional Study.
Masayoshi Kusunoki, Ryuichi Ohta, Kentaro Suzuki, Takayuki Maki, Chiaki Sano
Cureus 14(6) e26164 2022 年 6 月
40．Improvement in Quality of Life through Self-Management of Mild Symptoms during theCOVID-19 Pandemic: A Prospective Cohort Study.
Ryuichi Ohta, Yoshinori Ryu, Chiaki Sano
International journal of environmental research and public health 19(11) 2022 年 5 月 30 日
41．Association between Self-Medication for Mild Symptoms and Quality of Life among Older
Adults in Rural Japan: A Cross-Sectional Study.
Ryuichi Ohta, Yoshinori Ryu, Chiaki Sano
Medicina (Kaunas, Lithuania) 58(6) 2022 年 5 月 25 日
42．Granulomatous Mastitis With Erythema Nodosum During Pregnancy: A Case Report.
Sayaka Mabuchi, Ryuichi Ohta, Keiko Egawa, Yoko Narai, Chiaki Sano
Cureus 14(5) e24990 2022 年 5 月
43．Hemodialysis-Related Pericarditis With Cardiac Tamponade.
Hirara Watase, Kohei Oka, Fumiko Yamane, Chiaki Sano, Ryuichi Ohta
Cureus 14(5) e24748 2022 年 5 月
44．Reflection in Rural Family Medicine Education.
Ryuichi Ohta, Chiaki Sano
International journal of environmental research and public health 19(9) 2022 年 4 月 23 日
45．Factors Associated with Motivation for General Medicine among Rural Medical Students:
A Cross-Sectional Study.
Kasumi Nishikawa, Ryuichi Ohta, Chiaki Sano
International journal of environmental research and public health 19(9) 2022 年 4 月 22 日

46．A Solution for Loneliness in Rural Populations: The Effects of Osekkai Conferences during
the COVID-19 Pandemic.
Ryuichi Ohta, Koichi Maiguma, Akiko Yata, Chiaki Sano
International journal of environmental research and public health 19(9) 2022 年 4 月 21 日
47．The Relationship Between the Presence of White Nails and Readmission Among Rural Older
Admitted Patients: A Prospective Cohort Study.
Ryuichi Ohta, Yoshinori Ryu, Chiaki SanoCureus 14(4) e24297 2022 年 4 月
48．Pseudogout as a Cause of Fever of Unknown Origin Following Staphylococcal Bacteremia
in an Older Patient.
Ryoko Yamauchi, Ryuichi Ohta, Mari Igarashi, Yasuo Kurita, Miho Hayakawa, Chiaki Sano
Cureus 14(4) e24333 2022 年 4 月
49．Measuring Factor XIII Inhibitors in Patients with Factor XIII Deficiency: A Case Report andSystematic Review of Current Practices in Japan.
Shiho Amano, Kohei Oka, Yutaka Sato, Chiaki Sano, Ryuichi Ohta
Journal of clinical medicine 11(6) 2022 年 3 月 18 日
50．Older People's Help-Seeking Behaviors in Rural Contexts: A Systematic Review.
Ryuichi Ohta, Yoshinori Ryu, Chiaki Sano
International journal of environmental research and public health 19(6) 2022 年 3 月 9 日
51．Nurses' Contributions in Rural Family Medicine Education: A Mixed-Method Approach.
Ryuichi Ohta, Satoko Maejma, Chiaki Sano
International journal of environmental research and public health 19(5) 2022 年 3 月 6 日
52．A Case of Complicated Pneumonia Caused by Klebsiella ozaenae.
Takayuki Tachibana, Naoto Mouri, Chiaki Sano, Ryuichi Ohta
Cureus 14(3) e23001 2022 年 3 月
53．Yersinia pseudotuberculosis Bacteremia Complicated by Rhabdomyolysis.
Masayoshi Kusunoki, Ryuichi Ohta, Nozomi Nishikura, Chiaki Sano
Cureus 14(3) e23192 2022 年 3 月

54．Clinical Presentation and Mortality of Severe Fever with Thrombocytopenia Syndrome inJapan: A Systematic Review of Case Reports.
Kanako Yokomizo, Momoko Tomozane, Chiaki Sano, Ryuichi Ohta
International journal of environmental research and public health 19(4) 2022 年 2 月 17 日
55．Surgical Interventions in Cases of Esophageal Hiatal Hernias among Older Japanese Adults:
A Systematic Review.
Yuta Horinishi, Kai Shimizu, Chiaki Sano, Ryuichi Ohta
Medicina (Kaunas, Lithuania) 58(2) 2022 年 2 月 13 日56． Acute Cholecystitis in an Elderly Patient With Antineutrophil Cytoplasmic AntibodyAssociated Vasculitis: A Case Report.
Ryuichi Ohta, Hirotaka Ikeda, Saya Kubota, Chiaki Sano
Cureus 14(2) e21877 2022 年 2 月
57．Herpes Simplex Virus Pneumonia Mimicking Legionella Pneumonia in an Elderly PatientWith Heart and Liver Failure.
Miki Yamashita, Ryuichi Ohta, Naoto Mouri, Sho Takizawa, Chiaki Sano
Cureus 14(2) e21938 2022 年 2 月
58．A Rare Case of Herpes Esophagitis in an Immunocompetent Elderly Patient.
Ryuichi Ohta, Chiaki Sano
Cureus 14(2) e21854 2022 年 2 月
59．Serotonin Syndrome Triggered by Overuse of Caffeine and Complicated With Neuroleptic
Malignant Syndrome: A Case Report.
Ryuichi Ohta, Chiaki Sano
Cureus 14(2) e22468 2022 年 2 月
60．Effects of Shopping Rehabilitation on Older People's Daily Activities.
Naoto Mouri, Ryuichi Ohta, Chiaki Sano
Bilateral Intracardiac Microbubbles in a Patient With Giant Hiatus Hernia: A Case Report.
Jumpei Sawa, Nozomi Nishikura, Ryuichi Ohta, Chiaki Sano
Cureus 14(1) e20933 2022 年 1 月

61．Peritoneal Cancer Mimicking Sclerosing Mesenteritis: A Case Report.
Naoto Mouri, Ryuichi Ohta, Chiaki SanoCureus 14(1) e20934 2022 年 1 月
62．The Persistent Approach to Diagnose Infectious Hepatic Cysts in a Patient With Recurrent
Fever: A Case Report.
Hirotaka Ikeda, Ryuichi Ohta, Nozomi Nishikura, Yoshinori Ryu, Chiaki Sano
Cureus 14(1) e21137 2022 年 1 月
63 ． Severe Immune Thrombocytopenic Purpura Following Influenza Vaccination: A Case
Report.
Ryuichi Ohta, Chiaki Sano
Cureus 14(1) e21250 2022 年 1 月
64 ． Intercostal Muscle Abscesses in Infective Endocarditis Associated With MigratoryDeposition of Calcium Pyrophosphate.
Yuko Nakayama, Ryuichi Ohta, Naoto Mouri, Chiaki Sano
Cureus 14(1) e21396 2022 年 1 月
65．Pericarditis With Cardiac Tamponade Mimicking Yellow Nail Syndrome in a Patient WithRheumatoid Arthritis and a Paucity of Joint Symptoms.
Ayuko Tokonami, Ryuichi Ohta, Yudai Tanaka, Shiho Amano, Chiaki Sano
Cureus 14(1) e21523 2022 年 1 月
66．Fatal Bleeding From a Common Iliac Arterio-Ureteral Fistula in an Older Patient.
Ryuichi Ohta, Keita Inoue, Chiaki Sano
Cureus 14(1) e21578 2022 年 1 月
67 ． Difficulty in Diagnosing and Treating a Prostate Abscess With Bacterial and Fungal
Coinfection in an Immunocompromised Patient.
Ryuichi Ohta, Shuzo Hattori, Keita Inoue, Chiaki SanoCureus 14(1) e21774 2022 年 1 月