Taiki Haga, Graduate student

Taiki Haga, Graduate student

Chief Physician, Department of Critical Care Medicine, Osaka City General Hospital

Taiki Haga

Taiki Haga, MD


[Japanese version]

Born in 1980 in Kanagawa Prefecture, Dr. Haga graduated from Nara Medical University in 2005 with an MD degree. In October 2023, he joined the doctoral program in the Department of Clinical Epidemiology at the Graduate School of Medicine, Fukushima Medical University.

“I have dedicated my career to clinical practice, focusing primarily on pediatric critical care. Over time, I found myself increasingly confronted with unresolved questions during routine clinical work, sparking a strong interest in conducting clinical research that begins with these real-world challenges. In my tenth year as a physician, although I lacked foundational knowledge in clinical research, I embarked on my first attempt at data collection and statistical analysis. After nearly a year of effort, I completed my first English manuscript. However, when I submitted it to my mentor for review and revisions, I received no response for several years, and the manuscript remained unpublished. I realized that the quality of my work at the time was likely too low to merit constructive feedback.

This experience gave me a strong determination to independently produce high-quality English manuscripts. I began learning essential clinical research skills, including study design, statistical analysis, and academic writing, through books and seminars. With this knowledge, I tackled my second English manuscript. Although I faced repeated rejections and dishearteningly harsh reviewer comments, I persevered, driven by memories of my first failed attempt and the significant effort I had invested. Finally, after 16 submissions, the paper was accepted. The joy of that achievement was indescribable and marked the beginning of my passion for clinical research.

Since then, I have steadily continued publishing papers at my own pace, gradually refining my clinical research skills and gaining confidence in academic writing. However, as I took on a mentoring role for junior colleagues, I became acutely aware of the gaps in my knowledge. Learning through practice is valuable but inherently limited to the scope of one’s experiences, leaving unaddressed areas leaving unaddressed areas like holes in a patchwork quilt. This realization led me to pursue systematic academic training in clinical research.

With this motivation, I decided to enroll in the doctoral program in the Department of Clinical Epidemiology at this university. Building on my prior experiences, I aim to conduct and share clinical research that enhances the quality of care in critical care medicine on a global stage. Additionally, I am committed to continuous learning and growth to contribute meaningfully to advancing evidence-based practice in this field.”

[Professional Affiliations and Qualifications]
Japanese Society of Intensive Care Medicine (Board-Certified Intensivist)
Japanese Society of Pediatrics (Board-Certified Pediatrician and Supervisor)
Japanese Association for Acute Medicine (Board-Certified Specialist in Emergency Medicine)

[Training and Clinical Experience]
2005- Junior resident, Hoshigaoka Medical Center
2007- Resident, Pediatrics and Neonatology at Nara Medical University Hospital and affiliated hospitals
2011- Fellow, Department of Critical Care Medicine, National Center for Child Health and Development
2014- Senior fellow, Department of Emergency and Critical Care Medicine, Nihon University Itabashi Hospital
2015- Staff physician, Department of Critical Care Medicine, National Center for Child Health and Development
2016- Chief physician, Department of Intensive Care Medicine, Osaka City General Hospital


[ Selected clinical research ]

  1. Hasson DC, Gist K, Seo JD, Stenson EK, Kessel A, Haga T, LaFever Sara, Santiago MJ, Barhight M, Selewski DT, Ricci Z, Ollberding NJ, Stanski NL. The Association Between Vasopressin and Adverse Kidney Outcomes in Children and Young Adults Requiring Vasopressors on Continuous Renal Replacement Therapy. Critical Care Explorations 2024; 6(10):e1156
  2. Haga T, Misaki Y, Sakaguchi T, Akamine Y. Factors Affecting the Discrepancy Between Coagulation Times on Extracorporeal Circulation Using Unfractionated Heparin in Children and Young Adults. Clinical and Applied Thrombosis/Hemostasis 2024; 30: 1-8.
  3. Gist KM, Fuhrman DY, Deep A, Haga T, Demirkol D, Bel MJ, Arikan AA. Continuous Renal Replacement Therapy: Current State and Future Directions for Worldwide Practice. Pediatric Critical Care Medicine 2024; 25(6): 554-560.
  4. Stenson EK, Alhamoud I, Alobaidi R, Bottari G, Fernandez S, Fuhrman DY, Guzzi F, Haga T, Kaddourah A, Marinari E, Mohamed T, Morgan C, Mattes T, Neumayr T, Ollberding NJ, Raggi V, Ricci Z, See E, Stanski NL, Zang H, Zangla E, Gist KM, Selewski DT. Factors associated with successful liberation from continuous renal replacement therapy in children and young adults: analysis of the worldwide exploration of renal replacement outcomes collaborative in Kidney Disease Registry. Intensive Care Medicine 2024; 50: 861-872.
  5. Fuhrman DY, Stenson EK, Alhamoud I, Alobaidi R, Bottari G, Fernandez S, Guzzi F, Haga T, Kaddourah A, Marinari E, Mohamed TH, Morgan C, Mottes T, Neumayr TM, Ollberding NJ, Raggi V, Ricci Z, See E, Stanski NL, Zang H, Zangla E, Gist KM, Selewski DT. Major Adverse Kidney Events in Pediatric Continuous Kidney Replacement Therapy. JAMA Network Open 2024; 7(2): e240243.
  6. Haga T, Tani M, Oi T, Sakihama H, Sasaki K, Fujiwara N, Miyaji M, Okada H, Itakura R, Noda S, Wada S, Yamagami Y, Koizumi T, Horikawa A, Omori N, Sato M, Morota J, Ide K
    The Japanese Pediatric Continuous Renal Replacement Therapy (jpCRRT) Registry: Study Protocol
    Annals of Clinical Epidemiology 2023; 5(4): 121-126.
  7. Matsuda T, Haga T, Sakaguchi T, Kan Toshiaki, Otsuka Yasunori
    A case of anti-NPX-2 antibody-positive dermatomyositis resulting in massive haemothorax with acquired factor XIII deficiency
    Modern Rheumatology Case Reports 2023; doi: 10.1093/MRCR/RXAD049
  8. Haga T, Ide K, Tani M
    Characteristics of pediatric continuous renal replacement therapies in hospitals with pediatric intensive care units in Japan
    Therapeutic Apheresis and Dialysis 2023;27(3):562-570; doi: 10.1111/1744-9987.13958
  9. Haga T, Masuyama T, Hayashi Y, Atsumi T, Ishii K, Fujiwara S
    Characteristics of In-Hospital Patients with Congenital Heart Disease Requiring Rapid Response System Activations: A Japanese Database Study
    Congenital Heart Disease 2022; 17(1): 31-43. doi: 10.32604/CHD.2022.017407
  10. Haga T, Sakaguchi T, Kazuta T, Morooka T, Maruyama J, Yamaoka N, Miyahara S
    Effect of post-ICU follow-up by a rapid response team after congenital heart surgery
    Scientific Reports 2022; 12(1): 5633; doi: 10.1038/s41598-022-09683-y
  11. Haga T
    Characteristics of Patients With Congenital Heart Disease Requiring ICU Admission From Japanese Emergency Departments
    Pediatric Critical Care Medicine 2020; 21: e1106-e1112; doi: 10.1097/PCC.0000000000002440
  12. Haga T, Kurosawa H, Maruyama J, Sakamoto K, Ikebe R, Tokuhira N, Takeuchi M
    The prevalence and characteristics of rapid response systems in hospitals with pediatric intensive care units in Japan and barriers to their use
    International Journal for Quality in Health Care 2020; 32: 325-331; doi: 10.1093/intqhc/mzaa040
  13. Haga T, Akamine Y, Yamamoto H, Kazuta T, Oba H, Iwata H, Otsuka Y, Ujiro A
    Association Between Post-procedure Intracardiac Pressures and the Use of Temporary Epicardial Pacing Wires After Pediatric Cardiac Surgery
    Pediatric Cardiology 2020; 41: 366-371; doi: 10.1007/s00246-019-02268-z