AUTHOR & ACADEMIC PRINCIPAL

Nguyễn Đình Quang

Independent medical researcher | Founder, Vien Gut | System architect of the HOW — DATA-to-operate / operational layer

HOW AND DATA-TO-OPERATE DESIGN CONTRIBUTORS — VIEN GUT

Nguyễn Đình Quang Huy  HOW — DATA-to-operate design contributor | Operational management, transfer coordination — Vien Gut Model

Huỳnh Phước Đại, Nguyễn Sơn  Patient-language editorial | Communications data governance, deployment and transfer support — Vien Gut Model

ACADEMIC SUPPORT & WHAT (GUIDELINE) BENCHMARKING — INTERNATIONAL EXPERT GROUP

Thomas Bardin, Pascal Richette Co-authors of EULAR Recommendations — together with experts in cardiology, nephrology, hepatology, diabetology, diagnostic imaging, and biostatistics at Université Paris Cité, France, and Sorbonne University. Transfer of WHAT from treatment guidelines for gout and comorbidities; international benchmarking of WHAT; HOW design support — Vien Gut Model.

DATA GOVERNANCE TEAM — VIEN GUT

Trương Ánh Dương, Huỳnh Hồng Đức  Data governance, transfer support — Vien Gut Model

TREATING PHYSICIAN GROUP + MULTIDISCIPLINARY TEAM — VIEN GUT POLYCLINIC

Clinical HOW deployment: risk stratification, opportunity window, longitudinal monitoring, risk management, polypharmacy governance, referral safety valve activation — Vien Gut Model.

RESEARCH SITE

Franco-Vietnamese Center for Research on Gout and Chronic Diseases

Vien Gut Polyclinic, 13A Hồng Hạ Street, Tân Sơn Hòa Ward, Ho Chi Minh City, Vietnam

PLACE OF THIS DOCUMENT IN THE VIEN GUT DOSSIER


A.3 is not a workflow paper, not a single-disease application paper, and not a paper about organ-target clinical outcomes. Its job is different: it brings international evidence to support an argument prepared by A.1 and A.2 – that the HOW gap in care for complex chronic multimorbidity is not a local impression at Vien Gut, but a real global, structural gap already recognized in guidelines, international consensus documents, and independent studies.

A.3 belongs to Layer 1 – Core architecture. A.1 shows the structural break in the EBM chain at the point of clinical application. A.2 defines WHAT, HOW, and DATA-to-operate as the architecture used to fill that gap. A.3 then adds the international evidence showing that the gap truly exists at a global scale. Only after A.3 does the reader have a strong enough foundation to move into A.4-A.5, Part B, Part C, and Part D without misunderstanding the Vien Gut Model as only a local experience.

READER GUIDE TO A.3


  • To understand the overall architectural statement of the full dossier, read A.0.
  • To understand the EBM reference framework and the structural break in the EBM chain, read A.1.
  • To understand the precise definitions of the three layers WHAT – HOW – DATA-to-operate, read A.2.
  • To understand the detailed operational terminology, read A.4.
  • To understand the standardized terminology table, read A.5.
  • To see how the Vien Gut Model transforms HOW into operational processes, read B.1–B.5.
  • To see how this framework is applied to each disease axis, read C.1–C.n.
  • To see how the HOW gap is carried into academic dialogue and multicenter validation, read Part D.

ABSTRACT


A.3 presents international evidence confirming that the HOW gap in care for complex chronic multimorbidity is a global problem. The main message is this: modern medicine has built the WHAT layer very strongly through single-disease guidelines, and the international community has also begun to recognize the limits of the single-disease model in patients with multimorbidity. But after recognizing the gap, the world still has not produced a HOW + DATA-to-operate architecture that is concrete enough, structured enough, operational enough, and transferable enough for complex multimorbidity in outpatient care. A.3 gathers three kinds of evidence: the global scale of complex chronic multimorbidity; the lack of HOW in single-disease guidelines and multimorbidity consensus documents; and the measurable clinical harm caused by fragmented care.

From that base, A.3 defines four structural features of the global HOW gap and clarifies the academic position of the Vien Gut Model: it does not replace the WHAT layer of guidelines; it adds HOW and DATA-to-operate so guideline WHAT can work in integrated, personalized, and verifiable outpatient care.

References
  • [1] Barnett K, Mercer SW, Norbury M, Watt G, Wyke S, Guthrie B. Epidemiology of multimorbidity and implications for health care, research, and medical education. Lancet. 2012.
  • [2] WHO. Global action and integrated care documents on NCDs and multimorbidity.
  • [3] NICE. Multimorbidity: clinical assessment and management (NG56).
  • [4] Onder G, et al. JA-CHRODIS multimorbidity care model.
  • [5] Hughes LD, et al. Guidelines for people not for diseases.
  • [6] Muth C, et al. Best clinical management of patients with multimorbidity and polypharmacy.
  • [7] Prior A, et al. Healthcare fragmentation, PIM and mortality.
  • [8] Jiang S, et al. Fragmented care and chronic illness outcomes.
  • [9] Schiøtz ML, et al. Involving patients with multimorbidity in service planning.
  • [10] Liddy C, et al. Challenges of self-management with multiple chronic conditions.
  • [11] Johansen KJ, et al. GP strategies for managing multimorbidity.
  • [12] Tinetti ME, et al. Potential pitfalls of disease-specific guidelines.
  • [13] FitzGerald JD, et al. 2020 American College of Rheumatology Guideline for the Management of Gout.
  • [14] Richette P, et al. 2016 updated EULAR evidence-based recommendations for the management of gout.
  • [15] KDIGO. 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease.
  • [16] McDonagh TA, et al. 2021 ESC Guidelines for acute and chronic heart failure.
  • [17] EASL. Clinical Practice Guidelines for decompensated cirrhosis.
  • Foundational and operational documents within the academic dossier of the Vien Gut Model: A.0–A.2, A.4–A.5, B.1–B.5, C.1–C.n, Part D.

Related Documents

Document A.0: Architectural Declaration
Four Verification Targets on Target Organs as the Central Reference Framework of the Publication Set
Vien Gut Model — Academic Publication Set: 01-SC: 2026 Mar

Document A.1: EBM Reference Framework: What - How - Data to operate
From Gap to Operable Structure
Vien Gut Model — Academic Publication Set: 01-SC: 2026 Mar

Document A.2: Foundational Concept set: What - How - Data to operate
Identification, Definition, and Separation of the Three Architectural Layers of the Vien Gut Model. Reading foundation for the entire publication set
Vien Gut Model — Academic Publication Set: 01-SC: 2026 Mar

Document A.3: The global HOW Gap
Why Complex Chronic Multimorbidity Is Not Served by Existing Single-Disease Guidelines
Vien Gut Model — Academic Publication Set: 01-SC: 2026 Mar

Document A.4: Operational Concept Set
Identification and Definition of All HOW Terminology Unified Reference for the Entire Publication Set
Vien Gut Model — Academic Publication Set: 01-SC: 2026 Mar

Document A.5: Standardized Glossary
6 thematic groups · 60 HOW terms · 28 biomarkers & thresholds 18 imaging modalities · 77+ abbreviations
Vien Gut Model — Academic Publication Set: 01-SC: 2026 Mar

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