Correlates of Undiagnosed Hypertension Among Chinese and Korean American Immigrants

Undiagnosed hypertension and diabetes mellitus in the Tabari cohort: a population-based study

BACKGROUND

Undiagnosed hypertension (HTN) and diabetes mellitus (DM) are major public health challenges worldwide. We aimed to investigate the prevalence of undiagnosed HTN and DM, and their correlates, in a large-scale population-based cohort study.

METHODS

In this cross-sectional study, data collected during the enrollment phase of the Tabari Cohort study (TCS) were utilized. Data were collected in the TCS using a standard questionnaire, blood collection, and measurement of anthropometric indices and blood pressure. Data were analyzed using the chi-squared test and univariate and multivariate logistic regression analyses. Undiagnosed HTN included those who were not aware of HTN at the time of enrollment but had systolic and diastolic blood pressures ≥ 140 mm or ≥ 90 mmHg, respectively. Undiagnosed DM included participants who were unaware of their DM at the time of enrollment and had FBS levels ≥ 126 mg/dL.

RESULTS

The total prevalence of undiagnosed HTN and DM were 5% (508) and 4.7% (485), respectively. The findings of multivariable logistic regression analysis showed that young age (OR: 0.40, P < 0.001), residents of urban regions (OR: 0.70, P = 0.03), lower Body Mass Index kg/m2 (BMI) (OR: 0.51, P = 0.002), waist-to-hip ratio (WHR)(OR: 0.70, P = 0.023), total cholesterol (TC) ≥ 200 mg/dL (OR: 0.1.83, P < 0.001), lack of history of DM (OR: 0.38,P < 0.001), cardiovascular diseases (CVD)(OR: 0.12, P < 0.001), and lack of a positive family history of HTN in first-(OR: 0.39, P < 0.001) and second-degree(OR: 0.56, P = 0.009) relatives were the main predictors of undiagnosed HTN. Accordingly, male sex(OR: 0.52, P = 0.004), young age(OR: 0.28, P < 0.001), residence in urban regions(OR: 0.30, P < 0.001), BMI ≥ 30 (OR: 1.51, P = 0.044), low-density lipoprotein (LDL) ≥ 130 mg/dL (OR:1.93, P < 0.001), TC ≥ 200 mg/dL (95% CI, 1.47-2.51, P < 0.001), positive history of chronic kidney disease (OR:1.39, P = 0.010 ), and lack of family history of first-(OR: 0.38, P < 0.001) and second-degree (OR: 0.62, P < 0.015) DM were the main predictors of undiagnosed DM.

CONCLUSION

Overall, younger participants, those residing in urban areas, those with TC ≥ 200 mg/dL, and those without a positive family history of HTN or DM were at a greater risk of undiagnosed HTN/DM.

Risk of sleep apnea associated with higher blood pressure among Chinese and Korean Americans

OBJECTIVE

This study examines associations between sleep apnea risk and hypertension in a sample of immigrant Chinese and Korean Americans.

DESIGN

The dataset included Chinese and Korean patients ages 50-75 recruited from primary care physicians' offices from April 2018 to June 2020 in the Baltimore-Washington DC Metropolitan Area (n = 394). Hypertension risk was determined using a combination of blood pressure measurements, self-reported diagnosis of hypertension by a medical professional, and/or self-reported use of antihypertensive medications. Linear regression models examined the associations between sleep apnea risk and blood pressure (systolic blood pressure [SBP] and diastolic blood pressure [DBP]). Poisson regression models examined associations sleep apnea risk and hypertension. Models controlled for body mass index (BMI), demographic, and socioeconomic risk factors. We further examined models for potential effect modification by age, gender, Asian subgroup, and obesity, as well as effect modification of daytime sleepiness on the association between snoring and hypertension risk.

RESULTS

High risk of sleep apnea appeared to be associated positively with SBP (β = 6.77, 95% CI: 0.00-13.53), but not with DBP. The association was positive for hypertension, but it was not statistically significant (PR = 1.11, 95% CI: 0.87-1.41). We did not find effect modification of the associations between sleep apnea and hypertension risk, but we did find that daytime sleepiness moderated the effect of snoring on SBP. Snoring was associated with higher SBP, primarily in the presence of daytime sleepiness, such that predicted SBP was 133.27 mmHg (95% CI: 126.52, 140.02) for someone with both snoring and daytime sleepiness, compared to 123.37 mmHg (95% CI: 120.40, 126.34) for someone neither snoring nor daytime sleepiness.

CONCLUSION

Chinese and Korean immigrants living in the U.S. who are at high risk of sleep apnea have higher SBP on average, even after accounting for sociodemographic characteristics and BMI.

CLINICAL TRAIL REGISTRATION

: NCT03481296, date of registration: 3/29/2018.

Management of Hypertension in the Asia-Pacific Region: A Structured Review

This article reviews available evidence regarding hypertension management in the Asia-Pacific region, focussing on five research questions that deal with specific aspects: blood pressure (BP) control, guideline recommendations, role of renin-angiotensin-aldosterone system (RAAS) inhibitors in clinical practice, pharmacological management and real-world adherence to guideline recommendations. A PubMed search identified 2537 articles, of which 94 were considered relevant. Compared with Europeans, Asians have higher systolic/diastolic/mean arterial BP, with a stronger association between BP and stroke. Calcium channel blockers are the most-commonly prescribed monotherapy in Asia, with significant variability between countries in the rates of angiotensin-converting enzyme inhibitors (ACEis)/angiotensin-receptor blockers (ARBs) and single-pill combination (SPC) use. In clinical practice, ARBs are used more commonly than ACEis, despite the absence of recommendation from guidelines and clinical evidence supporting the use of one class of drug over the other. Ideally, antihypertensive treatment should be tailored to the individual patient, but currently there are limited data on the characteristics of hypertension in Asia-Pacific individuals. Large outcome studies assessing RAAS inhibitor efficacy and safety in multi-national Asian populations are lacking. Among treated patients, BP control rates were ~ 35 to 40%; BP control in Asia-Pacific is suboptimal, and disproportionately so compared with Western nations. Strategies to improve the management of hypertension include wider access/availability of affordable treatments, particularly SPCs (which improve adherence), effective public health screening programs targeting patients to drive health-seeking behaviours, an increase in physician/patient awareness and early implementation of lifestyle changes. A unified Asia-Pacific guideline on hypertension management with pragmatic recommendations, particularly in resource-limited settings, is essential.

Undiagnosed hypertension and associated factors among adults in ethiopia: a systematic review and meta-analysis

BACKGROUND

Hypertension is a major public health problem, resulting in 10 million deaths annually. Undiagnosed hypertension affects more people than ever before. It is more likely to be linked to severe hypertension, which can lead to stroke, cardiovascular disease, and ischemic heart disease. Thus, this systematic review and meta-analysis aimed to synthesize the prevalence of undiagnosed hypertension and its associated factors in Ethiopia.

METHODS

Databases, such as Medline/PubMed, Google Scholar, Science Direct, AJOL, and the Cochrane Library, were systematically searched to find potential studies published until December 2022. A Microsoft Excel spreadsheet was used to enter the extracted data. The pooled prevalence of undiagnosed hypertension and its associated factors was estimated using a random effect model. I2 statistics and the Cochrane Q-test were used to assess statistical heterogeneity across the studies. Begg's and Egger's tests were performed to identify possible publication bias.

RESULTS

A total of ten articles with 5,782 study participants were included in this meta-analysis. In the random effects model, the pooled prevalence of undiagnosed hypertension was 18.26% (95% CI = 14.94-21.58). Being older (OR = 3.8, 95% CI = 2.56, 5.66), having a body mass index > 25 kg/m2 (OR = 2.71, 95% CI = 2.1, 3.53), having a family history of hypertension (OR = 2.22, 95% CI = 1.47, 3.36), and having DM comorbidity (OR = 2.44, 95% CI = 1.38, 4.32) were significantly associated with undiagnosed hypertension.

CONCLUSION

In this meta-analysis, the pooled prevalence of undiagnosed hypertension was found to be high in Ethiopia. Being older, having a BMI > 25 kg/m2, having a family history of hypertension, and having DM comorbidity were found to be risk factors for undiagnosed hypertension.