Hai Nguyen Ngoc Dang

Dr. Hai Nguyen Ngoc Dang

Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

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

Representative Publications

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25 April 2024 in Frontiers in Cardiovascular Medicine
Verified
Journal Article
Open access
Hai Nguyen Ngoc DangHai Nguyen Ngoc Dang
Hai Nguyen Ngoc Dang
TLThang Viet Luong
Thang Viet Luong
BHBinh Anh Ho
Binh Anh Ho
Background: Cardiovascular complications are a leading cause of mortality and disability in individuals with diabetes mellitus (DM). Moreover, DM can directly impact the structure and function of cardiac muscle. We conducted a study to evaluate cardiac stiffness in DM patients in both the left atrium (LA) and left ventricle (LV), as well as to assess the impact of DM on the synchronization of the LA and LV, particularly within the Vietnamese population, utilizing speckle tracking echocardiography (STE).Methods: We studied 111 research subjects divided into two groups comprising 52 patients with DM and 59 healthy individuals. All the subjects provided relevant clinical information, and echocardiography was performed to assess the indices of LA stiffness, LV stiffness, and left atrioventricular coupling index (LACI).Results: Our study indicated that DM patients exhibited greater LA and LV stiffness than control patients. The LACI (%) in the DM group was also greater than that in the control group (17.12% ± 6.72% vs. 12.28% ± 3.96%, respectively; p < 0.001). The LACI was positively correlated with the LA and LV stiffness indices. Decreased levels of LV GLS, adjusted for age, sex, blood pressure, and BMI, have emerged as identified risk factors for DM.Conclusions: LA stiffness, LV stiffness, and the LACI are greater in DM patients than in normal individuals.

28 March 2024 in The Egyptian Heart Journal
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Journal Article
Open access
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Hai Nguyen Ngoc DangHai Nguyen Ngoc Dang
Hai Nguyen Ngoc Dang
TLThang Viet Luong
Thang Viet Luong
TTToan Thanh Tran
Toan Thanh Tran
Background: Type 2 diabetes mellitus (T2DM) is a metabolic disorder that detrimentally affects multiple systems in the body, with a particular emphasis on the vascular and nervous systems. Despite its significant impact, limited studies have explored the influence of this condition on the left atrial (LA) function. To address this gap, our study utilized speckle tracking echocardiography (STE) to assess LA function in patients with T2DM in Central Vietnam. Results: The cross-sectional comparative study enrolled 134 subjects involving 66 patients with T2DM and 68 healthy individuals meeting the selection and exclusion criteria of the study. In our study, healthy individuals demonstrated higher values for LA reservoir strain (LASr), LA conduit strain (LAScd), and LA contractile strain (LASct), measuring 38.75% ± 5.43%, 19.58% ± 5.91%, and 19.16% ± 4.98%, respectively. In contrast, the T2DM group exhibited lower values for LASr, LAScd, and LASct, which measured 31.2% ± 4.56%, 14.77% ± 6.3%, and 16.36% ± 4.82%, respectively (p < 0.05). T2DM patients with normal LA volume index (LAVI) and normal left ventricular mass index (LVMI), LASr, LAScd, and LASct results were 32.07% ± 5.28%, 16.28% ± 6.95%, and 15.64% ± 5.32%. respectively. Conclusions: STE of the LA reveals a noteworthy reduction in reservoir, conduit, and contractile functions within the T2DM group when compared to the control group (p < 0.05). Furthermore, these impaired functions persist in T2DM patients even in the absence of increased LAVI and LVMI.

8 May 2024 in Health Science Reports
Verified
Journal Article
Open access
Hai Nguyen Ngoc DangHai Nguyen Ngoc Dang
Hai Nguyen Ngoc Dang
TLThang Viet Luong
Thang Viet Luong
TTToan Thanh Tran
Toan Thanh Tran
HVHoang Anh Vu
Hoang Anh Vu
Background and Aims: Metabolic‐associated fatty liver disease (MAFLD) emerged as a novel term replacing nonalcoholic fatty liver disease (NAFLD) in 2020. While most MAFLD patients are asymptomatic, long‐term hepatic fat accumulation may lead to liver fibrosis and cardiovascular disease (CVD). Nevertheless, the relationship between MAFLD and cardiovascular (CV) risk factors remains unclear. This study aimed to assess the 10‐year estimated CVD risk in individuals diagnosed with MAFLD.Methods: Between January 2022 and August 2023, this cross‐sectional study enrolled 139 MAFLD patients. We employed the systematic coronary risk evaluation 2 (SCORE2) and the systematic coronary risk evaluation 2–older persons (SCORE2‐OP) scoring systems to evaluate and categorize the 10‐year CV risk. Liver fibrosis was assessed using biochemical parameters (FIB‐4, AST/ALT, and APRI), and their correlation with CV risk was examined.Results: Most MAFLD patients were categorized as having high or very high CV risk based on the SCORE2 and SCORE2‐OP. Liver fibrosis, measured by the FIB‐4 score, significantly differed among the various CV risk groups. Moreover, FIB‐4 correlated positively with SCORE2 and SCORE2‐OP (r = 0.588, p < 0.001), indicating its substantial predictive ability for identifying individuals at very high CV risk (AUC = 0.765, 95% CI: 0.686–0.845, p < 0.001). A FIB‐4 score of 1.275 demonstrated 81% sensitivity and 64% specificity in predicting very high CV risk among MAFLD patients.Conclusion: Patients with MAFLD predominantly face high or very high CV risks, with elevated liver fibrosis associated with increased 10‐year estimated CVD risk. The FIB‐4 score exhibits promising predictive value for identifying MAFLD patients at very high risk of CV disease.

23 July 2024 in PLOS ONE
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Journal Article
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Hai Nguyen Ngoc DangHai Nguyen Ngoc Dang
Hai Nguyen Ngoc Dang
TLThang Viet Luong
Thang Viet Luong
MCMai Thi Thu Cao
Mai Thi Thu Cao
VBVinh Trung Bui
Vinh Trung Bui
TTThanh Thien Tran
Thanh Thien Tran
HNHung Minh Nguyen
Hung Minh Nguyen
Background: Heart failure (HF) is becoming a growing public health concern. Diagnostic tests for determining the severity of HF often come with high costs and require specialized expertise, which makes it difficult to assess HF severity, especially in low-income countries or at primary healthcare facilities. Recently, red blood cell distribution width (RDW) has emerged as a promising, easily accessible marker associated with HF severity. The study aimed to assess changes in RDW levels in HF patients and the diagnostic value of RDW in detecting acute heart failure (AHF) among HF patients. Methods: We conducted a cross-sectional examination involving 351 participants divided into HF and non-HF cohorts. HF was defined and categorized according to the diagnostic and treatment guidelines for AHF and chronic heart failure (CHF) set forth by the European Society of Cardiology (2021). Univariate and multivariate analysis of factors associated with AHF was performed. Results: The study revealed that HF patients displayed higher median RDW levels (14.90% [13.70–17.00]) compared to non-HF individuals (13.00% [12.23–13.78]). RDW was notably elevated in HF patients with left ventricular ejection fraction < 50% compared to those with left ventricular ejection fraction ≥ 50%. ROC curve analysis of RDW for AHF detection identified a cutoff value of 13.85%, with a sensitivity of 86.05% and specificity of 47.18%, statistically significant at p < 0.001. RDW > 13.85% was identified as an independent risk factor for AHF in patients with HF, with odds ratios of 2.644 (95% CI, 1.190–5.875; p = 0.017). Conclusion: The study revealed significant RDW variations in patients with CHF and AHF compared to the control group. These findings suggest that RDW could be a biomarker for detecting HF severity.

1 July 2025 in Scientific Reports
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Journal Article
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Hai Nguyen Ngoc DangHai Nguyen Ngoc Dang
Hai Nguyen Ngoc Dang
TLThang Viet Luong
Thang Viet Luong
HTHung Khanh Tran
Hung Khanh Tran
NLNy Ha Tuyet Le
Ny Ha Tuyet Le
MNMinh Hoang Nhat Nguyen
Minh Hoang Nhat Nguyen
HNHung Minh Nguyen
Hung Minh Nguyen
Heart failure (HF) is a global health burden, with high hospitalization and mortality rates. Timely diagnosis is crucial in the management of HF. While noninvasive imaging techniques generally assess changes in the left atrium (LA) or left ventricle (LV) alone, the application of physiological connections between these chambers as echocardiographic parameters, such as the left atrioventricular coupling index (LACI), may be valuable as an early marker of HF. We conducted a cross-sectional study in which 1145 Vietnamese individuals were selected and 160 subjects met the inclusion criteria. These participants were divided into patient and healthy control groups, with 60 HF patients. LACI levels were significantly greater in HF patients, especially those with preserved ejection fraction (HFpEF), than in those with reduced ejection fraction (HFrEF) and controls (59.16 ± 17.94% vs. 41.28 ± 15.27% and 13.15 ± 3.92%, respectively). The LACI showed strong diagnostic value for HFpEF, with an area under the curve (AUC) of 0.951 and an optimal threshold of 33.07 (sensitivity: 97.1%, specificity: 87.3%). Multivariate analysis confirmed LACI as an independent predictor of HFpEF (OR = 1.144, 95% CI 1.087–1.205). Overall, LACI has emerged as an accessible, promising tool for diagnosing HFpEF.

21 November 2024 in Scientific Reports
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Journal Article
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Hai Nguyen Ngoc DangHai Nguyen Ngoc Dang
Hai Nguyen Ngoc Dang
TLThang Viet Luong
Thang Viet Luong
APAnh Kiem Pham
Anh Kiem Pham
TLThe Trung Le
The Trung Le
NLNhan Duc Le
Nhan Duc Le
BHBinh Anh Ho
Binh Anh Ho
Erectile dysfunction (ED) shares common risk factors with cardiovascular (CV) disease, such as a sedentary lifestyle, obesity, and metabolic syndrome. However, the relationship between ED and CV risk in Vietnam remains unknown. To investigate this, we conducted a multi-center observational study, randomly selecting 2,936 men aged 40 to 69 years in Vietnam, with 385 participants included after exclusions. The study evaluated the 10-year CV risk using the Systematic Coronary Risk Evaluation 2-Diabetes (SCORE2-Diabetes) score and assessed ED using the International Index of Erectile Function (IIEF-5) score. Results showed that men with diabetes mellitus and hypertension had significantly lower IIEF-5 scores compared to healthy individuals (18 [15–22] vs. 23 [20–24], p < 0.001). Additionally, the IIEF-5 score proved effective in identifying patients at very high CV risk, with an area under the curve (AUC) of 0.747, a cutoff point of 18.5, sensitivity of 69.6%, and specificity of 69.9%. Furthermore, we found a significant inverse correlation between SCORE2-Diabetes and IIEF-5 (ρ = -0.45 and p < 0.001). These findings establish a significant connection between ED and CV risk in men with diabetes, underscoring the need for integrated screening and management strategies to address both conditions concurrently.