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"Balakrishnan, Maya"
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Prevalence and factors associated with NAFLD detected by vibration controlled transient elastography among US adults: Results from NHANES 2017–2018
2021
Non-alcoholic fatty liver disease (NAFLD) is increasingly common in the adult population. In the United States, the overall burden of NAFLD is unknown due to challenges with population-level NAFLD detection. The purpose of this study was to estimate prevalence of NAFLD and significant NAFLD fibrosis and identify factors associated with them in the U.S.
Data came from the 2017-2018 cycle of National Health and Nutrition Examination Survey. We defined NAFLD by controlled attenuation parameter (CAP) scores of ≥248 dB/m in absence of excessive alcohol use and viral hepatitis. We defined significant fibrosis as Vibration controlled transient elastography (VCTE) liver stiffness measurements (LSM) value ≥7.9 kPa. We calculated the adjusted odds ratio (OR) and 95% confidential intervals (CI) for associations with NAFLD and significant NAFLD fibrosis using multivariable logistic regression.
Overall, among 4,024 individuals aged ≥20 years included in the analysis, 56.7% had NAFLD by CAP. In comparison, when defined by elevated liver enzymes, NAFLD prevalence was 12.4%. The prevalence of significant NAFLD fibrosis by VCTE LSM was 14.5%. NAFLD prevalence increased with age, was higher among men than women and among Hispanics compared with non-Hispanic whites. Individuals who were obese, had metabolic syndrome (MetS) and type 2 diabetes were more likely to have NAFLD compared to those that who were not obese or without MetS/diabetes. Inadequate physical activity (OR = 1.57, 95% CI: 1.18-2.08) was also a factor associated with NAFLD. MetS, high waist circumstance, diabetes and hypertension were independently associated with significant NAFLD fibrosis.
NAFLD and significant NAFLD fibrosis are highly prevalent in U.S. general population.
Journal Article
Inter- and intra-observer agreement in ultrasound diagnosis of steatotic liver disease: implications for screening in resource-limited settings
by
Wynne, David
,
Argirion, Ilona
,
Hildesheim, Allan
in
692/308/174
,
692/4020/4021/1607/2750
,
Adult
2025
Steatotic liver disease (SLD), which is associated with increased risk of cancer-related mortality, needs timely and cost-effective detection. Although liver biopsy remains the diagnostic gold standard, its invasiveness and high-cost limit widespread use. Ultrasound is a practical and affordable alternative. We evaluated inter- and intra-observer agreement for ultrasound-based diagnosis of SLD using images from the Chile Biliary Longitudinal Study (Chile BiLS), a cohort of women with gallstones. These women have a high burden of obesity and related metabolic disorders, putting them at higher risk for SLD. A radiologist (observer 1) reviewed a randomly selected subset of 425 baseline images and compared them with the original readings from Chile BiLS radiology technicians. To assess intra-observer reproducibility, observer 1 reanalyzed 34 blinded duplicates, and two Chile BiLS radiology technicians (observers 2 and 3) independently reviewed these images. Observer 2 then re-reviewed the 34 images to assess intra-observer agreement. Agreement was analyzed using kappa and percent agreement. Observer 1 had slight inter-observer agreement (kappa: 0.12; 95% CI 0.08–0.15,
p
< 0.001; percent agreement: 41.0%), while observers 2 and 3 showed fair agreement (kappa: 0.29: 95% CI 0.11–0.58,
p
< 0.05; percent agreement: 64.7% and kappa: 0.32: 95% CI 0.06–0.58,
p
< 0.05; percent agreement: 63.6%, respectively). Intra-observer agreement was moderate for observer 1 (kappa: 0.45; 95% CI 0.08–0.82,
p
< 0.05; percent agreement: 81.3%), and substantial for observer 2 (kappa: 0.64; 95% CI 0.37–0.90,
p
< 0.001; percent agreement: 81.8%). Our findings highlight variability in ultrasound interpretation, underscoring the necessity of inter- and intra-observer comparisons for optimal diagnosis and quality control to enhance diagnostic consistency in high-risk populations.
Journal Article
Post-operative Ayurvedic management of non-healing idiopathic granulomatous mastitis - A case report
2021
Idiopathic granulomatous mastitis (IGM) is a chronic inflammatory disease of the breast which may present as painful, unilateral, discrete, breast masses with a tendency to recur. The pathogenesis is still unclear. In Ayurvedic literature, clinical features similar to IGM is seen in Stanavidradhi (breast abscess). We present the case of a 25-year old uniparous woman who had previously undergone excision biopsy for a breast lump and was diagnosed with IGM by histopathology examination. After one month, she developed pain, redness, and swelling at the operated site. She was treated for two months with corticosteroids and antibiotics, but the symptoms did not subside. After Ayurvedic treatment, the condition started to respond in a week and was completely resolved within three months. She was followed-up with medicines for three months and without medicines for another six months during which period, no recurrence was seen. The non-healing nature and high rate of recurrence of IGM necessitates prolonged treatment with steroids and antibiotics that have long-lasting adverse effects. In this context, Ayurveda may be able to offer an effective option with significantly fewer adverse effects, not only in the management of abscess and sinus, but also in prevention of recurrence.
Journal Article
Perceptions of weight status and energy balance behaviors among patients with non-alcoholic fatty liver disease
by
Liu, Yan
,
Rungta, Manav
,
El-Serag, Hashem B.
in
692/4020/4021
,
692/4020/4021/1607/2750
,
Behavior
2022
Weight loss through behavioral modification is central to treating non-alcoholic fatty liver disease (NAFLD). To achieve this, patients need to accurately self-perceive their health behaviors. We aimed to identify predictors of concordance between self-perception and objective measures of body weight, physical activity (PA) and dietary behaviors. We used data from the Harris County NAFLD Cohort, an ongoing prospective study in a regional safety-net healthcare system. Patients completed self-administered baseline questionnaires on demographics, diet, PA, and self-perceptions. We assessed concordance between actual and self-perceived body weight and energy-balance behaviors. Multivariable logistic regression identified predictors of concordance. Patients (n = 458; average age 46.5 years) were 90% Hispanic and 76% female. PA and fruit/vegetable intake guidelines were met among 37% and 9%, respectively. Most (89%) overweight/obese patients accurately perceived themselves as such. However, 41% of insufficiently-active and 34% of patients not meeting fruit/vegetable intake guidelines inaccurately self-perceived their behaviors as “just right”. Women were 3 times more likely to accurately self-perceive weight status (adjusted odds ratio [AOR] 3.24; 95% CI 1.68–6.25) but 51% less likely to accurately self-perceive PA levels than men (AOR 0.49; 95% CI 0.29–0.81). Lower acculturation was associated with higher odds of accurate PA self-perception. Patients with prediabetes or diabetes vs normoglycemia were more likely to accurately self-perceive their fruit/vegetable intake. Most NAFLD patients accurately self-perceived their body weight. A third or more of those not meeting fruit/vegetable intake or PA guidelines had inaccurate perceptions about their behaviors. Our findings highlight key areas to target in NAFLD-specific behavioral modification programs.
Journal Article
Early predictors of outcomes of hospitalization for cirrhosis and assessment of the impact of race and ethnicity at safety-net hospitals
2019
Safety-net hospitals provide care for racially/ethnically diverse and disadvantaged urban populations. Their hospitalized patients with cirrhosis are relatively understudied and may be vulnerable to poor outcomes and racial/ethnic disparities.
To examine the outcomes of patients with cirrhosis hospitalized at regionally diverse safety-net hospitals and the impact of race/ethnicity.
A study of patients with cirrhosis hospitalized at 4 safety-net hospitals in 2012 was conducted. Demographic, clinical factors, and outcomes were compared between centers and racial/ethnic groups. Study endpoints included mortality and 30-day readmission.
In 2012, 733 of 1,212 patients with cirrhosis were hospitalized for liver-related indications (median age 55 years, 65% male). The cohort was racially diverse (43% White, 25% black, 22% Hispanic, 3% Asian) with cirrhosis related to alcohol and viral hepatitis in 635 (87%) patients. Patients were hospitalized mainly for ascites (35%), hepatic encephalopathy (20%) and gastrointestinal bleeding (GIB) (17%). Fifty-four (7%) patients died during hospitalization and 145 (21%) survivors were readmitted within 30 days. Mortality rates ranged from 4 to 15% by center (p = .007) and from 3 to 10% by race/ethnicity (p = .03), but 30-day readmission rates were similar. Mortality was associated with Model for End-stage Liver Disease (MELD), acute-on-chronic liver failure, hepatocellular carcinoma, sodium and white blood cell count. Thirty-day readmission was associated with MELD and Charlson Comorbidity Index >4, with lower risk for GIB. We did not observe geographic or racial/ethnic differences in hospital outcomes in the risk-adjusted analysis.
Hospital mortality and 30-day readmission in patients with cirrhosis at safety-net hospitals are associated with disease severity and comorbidities, with lower readmissions in patients admitted for GIB. Despite geographic and racial/ethnic differences in hospital mortality, these factors were not independently associated with mortality.
Journal Article
Understanding Primary Care Physician Perspectives on the Diagnosis and Management of Non-Alcoholic Fatty Liver Disease: A Qualitative Study
2024
Primary care physicians (PCPs) are well suited to manage patients with non-alcoholic fatty liver disease (NAFLD), but the limited, existing research suggests inadequate knowledge about the natural history, diagnostic methods, and management of NAFLD. The purpose of this qualitative study is to further understand the knowledge and practices for the diagnosis and management of NAFLD among PCPs. We conducted in-depth interviews with PCPs in the Greater Houston area, addressing current clinical practices used for diagnosing and managing NAFLD, as well as the perceptions of the PCPs regarding the burden of NAFLD on patients. We recorded interviews, transcribed them, coded transcripts, and identified patterns and themes. The interviewed PCPs (n = 16) were from internal or family medicine, with a range of experience (1.5-30 years). We found variations in NAFLD diagnosis and management across practices and by insurance status. Patients with abnormal liver imaging who had insurance or were within a safety-net healthcare system were referred by PCPs to specialists. Uninsured patients with persistently elevated liver enzymes received lifestyle recommendations from PCPs without confirmatory imaging or specialist referral. The role of PCPs in NAFLD management varied, with some helping patients set dietary and physical activity goals while others provided only general recommendations and/or referred patients to a dietitian. The diagnosis and management of NAFLD vary widely among PCPs and may be impacted by patients’ insurance status and clinic-specific practices. The increasing burden of NAFLD in the U.S. medical system highlights the need for more PCPs involvement in managing NAFLD.
Journal Article
Sleep Disturbance Is Associated With the Presence of Portosystemic Collaterals in Patients With Compensated Cirrhosis
2021
Disturbed sleep is common among patients with cirrhosis. The extent to which this is associated with the different stages of compensated cirrhosis is unknown. This study examines whether the presence of portosystemic collaterals, an indicator of clinically significant portal hypertension, is associated with sleep disturbance in compensated cirrhosis. We conducted a cross‐sectional study among patients with compensated cirrhosis, comparing sleep characteristics, sleep quality, and excessive daytime sleepiness between 21 patients without and 21 patients with portosystemic collaterals. Patients were assessed with wrist actigraphy, Pittsburgh Sleep Quality Index, and the Epworth Sleepiness Scale. Collateral presence was determined by imaging and esophagogastroduodenoscopy. Differences in sleep characteristics were analyzed using t tests and computed effect sizes. Multivariable linear regression analysis was used to evaluate the association between collaterals and sleep disturbance while controlling for possible confounders. The group of patients with collaterals had greater beta‐blocker and tobacco use, lower albumin, and higher international normalized ratio compared to the group without collaterals. Patients with collaterals had more sleep fragmentation (Cohen’s d = −0.86), lower sleep efficiency (Cohen’s d = 0.59), and lower total sleep time (Cohen’s d = 0.75) than patients without collaterals. The presence of collaterals was independently associated with greater sleep fragmentation (P = 0.046) and greater daytime sleepiness (P = 0.030). Conclusion: Patients with compensated cirrhosis complicated by portosystemic collaterals experienced more sleep disturbance than those without collaterals.
Journal Article
Changing Trends in Stomach Cancer Throughout the World
by
George, Rollin
,
Graham, David Y.
,
Balakrishnan, Maya
in
20th century
,
Asia - epidemiology
,
Cross-sectional studies
2017
Purpose of Review
The paper aims to discuss the global trends in gastric cancer incidence in relation to important factors involved in the pathogenesis of gastric cancer.
Recent Findings
Despite a significant worldwide decline, gastric cancer remains a common cause of cancer death. The decline has been multifactorial and preceded the fall in
Helicobacter pylori
prevalence. The initial decline was associated with changes in food preservation and availability, especially of fresh fruits and vegetables, followed by a decline in the primary etiologic factor,
H. pylori
. Gastric cancer incidence remains high in East Asia, intermediate in Latin America, and low in developed countries. Significant racial/ethnic variability exists.
Summary
The rapid decline in incidence in East Asia will continue as primary and secondary prevention strategies are implemented. The incidence in Latin America is unlikely to decline significantly over the next few decades given high
H. pylori
prevalence in the young. Ultimately, global
H. pylori
eradication will be needed to largely eliminate gastric cancer.
Journal Article