Predictors of isolated systolic hypertension among type 2 diabetes mellitus patients in Jimma University Specialized Hospital, Southwest Ethiopia

Magnitude and determinants of isolated systolic hypertension among type 2 diabetes patients in selected referral hospitals in Amhara Region, Ethiopia

Patients with diabetes had significant vascular resistance, which was explained by vascular remodeling and an increase in fluid volume as a result of hyperglycemia. Insulin resistance in type 2 diabetes impairs lipid catabolism, and obesity raises the risk of isolated systolic hypertension. However, in Ethiopia minimal study has been conducted to address the specific relationship between isolated systolic hypertension and type 2 diabetes. Therefore, this study aims to determine the magnitude and determinants of isolated systolic hypertension among type 2 diabetes patients in selected referral hospitals of Amhara region, Ethiopia. A multicenter institution-based cross-sectional study was conducted from September 1 and December 30, 2023. Referral hospitals were chosen using simple random sampling. Additionally, participants in the study were chosen from the designated referral hospitals using systematic sampling approaches. To collect clinical and sociodemographic data, an interviewer-administered questionnaire was utilized. Epi-data version-4.6 and Stata-14 were used for data entry and statistical analysis, respectively. The descriptive statistics were presented with tables and graphs. A binary logistic regression model was fitted to identify associated factors of isolated systolic hypertension. In the final model, statistical significance was decided at p ≤ 0.05, and the strength of association was indicated using an adjusted odds ratio with 95% CI. The analysis included 258 participants, and the prevalence of isolated systolic hypertension was found to be 21.3% (95% CI 18-27.1%). Older age (AOR = 4.64, 95%CI 1.31,16.36), fasting blood sugar of ≥ 130 mg/dl (AOR = 2.32, 95% CI; 1.04, 5.19), and BMI > 25 Kg/m2 (AOR = 2.75, 95% CI (1.33, 5.68)) were statistically significant factors of isolated systolic hypertension. The prevalence of isolated systolic hypertension (ISH) in this study was high, affecting large population of Type 2 Diabetes Mellitus (T2DM) patients. Older age, high body mass index (BMI), and elevated fasting blood sugar levels were identified as key determinants of ISH. The study emphasizes the need for regular monitoring and management of blood pressure in T2DM patients, particularly those who are older, and have higher BMI.

Determinants and prediction of hypertension among Chinese middle-aged and elderly adults with diabetes: A machine learning approach

Objective

Multimorbidity, particularly diabetes combined with hypertension (DCH), is a significant public health concern. Currently, there is a gap in research utilizing machine learning (ML) algorithms to predict hypertension risk in Chinese middle-aged and elderly diabetic patients, and gender differences in DCH comorbidity patterns remain unclear. We aimed to use ML algorithms to predict DCH and identify its determinants among middle-aged and elderly diabetic patients in China.

Study design

Cross-sectional study.

Methods

Data were collected on 2775 adults with diabetes aged ≥45 years from the 2015 China Health and Retirement Longitudinal Study. We employed nine ML algorithms to develop prediction models for DCH. The performance of these models was evaluated using the area under the curve (AUC). Additionally, we conducted variable importance analysis to identify key determinants.

Results

Our results showed that the best prediction models for the overall population, men, and women were extreme gradient boosting (AUC = 0.728), light gradient boosting machine (AUC = 0.734), and random forest (AUC = 0.737), respectively. Age, waist circumference, body mass index, creatinine level, triglycerides, taking Western medicine, high-density lipoprotein cholesterol, blood urea nitrogen, total cholesterol, low-density lipoprotein cholesterol, and sleep disorders were identified as common important predictors by all three populations.

Conclusions

ML algorithms showed accurate predictive capabilities for DCH. Overall, non-linear ML models outperformed traditional logistic regression for predicting DCH. DCH predictions exhibited variations in predictors and model accuracy by gender. These findings could help identify DCH early and inform the development of personalized intervention strategies.

Cognitive impairment and associated factors among patients with diabetes mellitus in Africa: a systematic review and meta-analysis

Background

Inappropriate management of blood sugar in patients with diabetes mellitus leads to micro-vascular and macro-vascular complications, subsequently leading to high morbidity and mortality rates. In addition, diabetes independently increases the occurrence of cognitive impairment complicated by dementia. Scientific evidence on the magnitude of cognitive impairment will provide a sound basis for the determination of healthcare needs and the planning of effective healthcare services. Despite this, there are no comprehensive data on the prevalence and associated factors of cognitive impairment among patients with diabetes in Africa.

Methods

To identify relevant articles for this review, we searched PubMed, Cochrane Library, Science Direct, African Journals Online, and Google Scholar. After extraction, the data were imported into Stata software version 11 (Stata Corp., TX, USA) for further analysis. The random-effects model, specifically the DerSimonian and Laird (D+L) pooled estimation method, was used due to the high heterogeneity between the included articles. Begg's and Egger's regression tests were used to determine the evidence of publication bias. Sub-group analyses and sensitivity analyses were also conducted to handle heterogeneity.

Results

The pooled prevalence of cognitive impairment among patients with diabetes in Africa is found to be 43.99% (95% CI: 30.15-57.83, p < 0.001). According to our analysis, primary level of education [pooled odds ratio (POR) = 6.08, 95% CI: 3.57-10.36, I 2 = 40.7%], poorly controlled diabetes mellitus (POR = 5.85, 95% CI: 1.64-20.92, I 2 = 87.8%), age above 60 years old (POR = 3.83, 95% 95% CI: 1.36-10.79, I 2 = 63.7%), and diabetes duration greater than 10 years (POR = 1.13; 95% CI: 1.07-1.19, I 2 = 0.0%) were factors associated with cognitive impairment among patients with diabetes.

Conclusion

Based on our systematic review, individuals with diabetes mellitus exhibit a substantial prevalence rate (43.99%) of cognitive impairment. Cognitive impairment was found to be associated with factors such as primary level of education, poorly controlled diabetes mellitus, age above 60 years, and diabetes duration greater than 10 years. Developing suitable risk assessment tools is crucial to address uncontrolled hyperglycemia effectively.

Systematic review registration

https://www.crd.york.ac.uk/prospero, identifier CRD42024561484.

Regional prevalence of hypertension among people diagnosed with diabetes in Africa, a systematic review and meta-analysis

Hypertension and diabetes comorbidity can increase healthcare expenditure and the risk of coronary heart disease. We conducted a systematic review and meta-analysis to estimate the prevalence of hypertension among people with diabetes in African countries. We searched EMBASE, PubMed and HINARI databases from inception to March 2023. Cross-sectional studies reporting the prevalence of hypertension among people with diabetes and published in English in Africa were eligible for inclusion. The cross-sectional study design component of the mixed method appraisal tool was used to assess the quality of the included studies. We quantified the overall and regional prevalence of hypertension among people with diabetes using random-effects meta-analysis. We assessed heterogeneity and publication bias using I2 statistics and funnel plots. Out of 3815 articles retrieved from the various databases, 41 met the inclusion criteria with sample sizes ranging from 80 to 116726. The mean age was 58 years (± 11) and 56% were women. The pooled prevalence of hypertension in people diagnosed with diabetes was 58.1% [95% CI: 52.0% - 63.2%]. By region, Central Africa had the highest hypertension prevalence; 77.6% [95% CI: 53.0% - 91.4%], Southern Africa 69.1% [95% CI: 59.8% - 77.1%;], North Africa 63.4% [95% CI: 37.1% - 69.1%;], West Africa 51.5% [95% CI: 41.8% - 61.1%] and East Africa 53.0% [95% CI: 45.8% - 59.1%]. Increasing age, being overweight/obese, being employed, longer duration of diabetes, urban residence, and male sex were reported to be associated with a higher likelihood of developing hypertension. The high prevalence of hypertension among people with diabetes in Africa highlights the critical need for an integrated differentiated service delivery to improve and strengthen primary care and prevent cardiovascular disease. Findings from this meta-analysis may inform the delivery of interventions to prevent premature cardiovascular disease deaths among persons in the region.

Predictive power of isolated high home systolic blood pressure for cardiovascular outcomes in individuals with type 2 diabetes mellitus: KAMOGAWA-HBP study

AIMS/INTRODUCTION

Isolated high home systolic blood pressure (IHHSBP) is a risk for cardiovascular disease (CVD). However, no study has shown an association between IHHSBP and CVD in diabetes. We examined the association between IHHSBP and CVD in type 2 diabetes.

MATERIALS AND METHODS

This retrospective cohort study included 1082 individuals with type 2 diabetes, aged 20 to 90 years, without a history of macrovascular complications. Home blood pressure (HBP) was measured three times every morning and evening for 14 days. Cox proportional hazards models were used to examine the relationship between IHHSBP and CVD incidence.

RESULTS

With the normal HBP group as the reference, the adjusted hazard ratio (HR) (95% confidence interval [CI]) for CVD was 1.58 (1.02-2.43) in the IHHSBP group. Correcting for antihypertensive medication use did not change HR. Based on sex, the adjusted HR (95% CI) for CVD was 1.25 (0.74-2.13) in males and 2.28 (1.01-5.15) in females.

CONCLUSIONS

In individuals with type 2 diabetes, those with IHHSBP had a higher HR for cardiovascular disease than those with normal HBP. But, Isolated high home diastolic blood pressure and high HBP were not. The association between IHHSBP and CVD was stronger in females than in males.

Prevalence of hypertension among type 2 diabetes mellitus patients in Ethiopia: a systematic review and meta-analysis

BACKGROUND

Hypertension among diabetic patients is a worldwide public health challenge and a leading modifiable risk factor for other cardiovascular diseases and death. This study aimed to estimate the prevalence of hypertension among diabetic patients in Ethiopia.

METHODS

The studies were selected using PubMed, Embase, Health InterNetwork Access to Research Initiative and Cochrane Library databases and Google searches. Two independent authors carried out the data extraction using a predetermined and structured method of data collection. R version 3.5.3 and RStudio version 1.2.5003 were used for analysing the data. To assess possible publication bias, funnel plot test methods were used. The guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses were used to publish the results. This study was registered in the Prospective Register Systematic Reviews (CRD42020170649).

RESULTS

A total of 218 articles were identified but only 6 six full-text abstract papers were included in this systematic review and meta-analysis. The random effects model analysis showed that the pooled prevalence of hypertension among type 2 diabetes mellitus (DM) patients in Ethiopia was 55% (95% confidence interval [CI] 49 to 61). The subgroup analysis of the pooled prevalence of hypertension among type 2 DM patients in the Oromia and Southern regions was 51% (95% CI 42 to 59) and 58% (95% CI 54 to 63), respectively. The pooled prevalence of hypertension among type 2 DM patients was higher among urban residents (60% [95% CI 54 to 67] and 52% [95% CI 41 to 63] among urban and rural residents, respectively).

CONCLUSIONS

This study showed a high pooled prevalence of hypertension among type 2 DM patients in Ethiopia. Appropriate preventive measures should be implemented to reduce the burden of hypertension among DM patients in Ethiopia.

Prevalence and predictors of different patterns of hypertension among adults aged 20-60 years in rural communities of Southeast Nigeria: a cross-sectional study

BACKGROUND

Hypertension, a major cardiovascular disease risk factor exists several years without symptoms. Few data exist on prevalence and predictors of hypertension among apparently healthy Nigerian adults. This makes it difficult for policy-makers to concentrate efforts to control emerging health burden of the disease. This study assessed prevalence and predictors of isolated systolic hypertension (ISH), isolated diastolic hypertension (IDH) and combined systolic and diastolic hypertension (CSDH).

METHODS

Cross-sectional survey design was employed in the study of 517 adult participants (20-60 years) in a rural setting. Selection of the respondents was through multistage sampling which involved systematic, proportionate and simple random sampling. Data on socio-demographic characteristics, blood pressure, height, weight, and waist circumference were collected. Frequencies, T-test, analysis of variance and Chi square were used in statistical analysis. Bivariate and multivariate logistic regressions were used to evaluate variables associated with different patterns of hypertension with significance accepted at P < 0.05. Frequencies, percentages, crude and adjusted odd ratios were reported. Statistical Product and Service Solutions version 21.0 was used in statistical analysis.

RESULTS

ISH (10.6%), IDH (18.2%) and CSDH (37.8%) were observed among the participants. ISH was less likely among 20-29 year-olds (adjusted odds ratio (aOR) = 0.35, 95% confidence interval (C.I.) = 0.13-0.94), 30-39 year-olds (aOR = 0.30, 95% C.I. = 0.11-0.82) and those with abdominal obesity (aOR = 0.12, 95% C.I. = 0.03-0.56). Participants who perceived their health status as good (aOR = 3.80, 95% C.I. = 1.29-11.18) and excellent (aOR = 5.28, 95% C.I. = 1.54-18.07) were respectively 3.80 and 5.28 times more likely to have ISH. Those with secondary education had significantly higher likelihood for IDH (aOR = 2.05, 95% = 1.02-4.14) whereas self-perceived poor health status (aOR = 0.24, 95% C.I. = 0.09-0.65), absence of obesity (aOR = 0.10, 95% C.I. = 0.01-0.81) and general obesity (aOR = 0.35, 95% C.I. = 0.17-0.72) were associated with reduced risk for IDH. Secondary (aOR = 0.60, 95% C.I. = 0.36-0.99) and tertiary (aOR = 0.49, 95% C.I. = 0.28-0.85) education were associated with reduced risk for CSDH but combined obesity (aOR = 4.39, 95% C.I. = 2.25-8.58) increased the risk for CSDH by 4.

CONCLUSION

ISH, IDH and CSDH were problems among the adults with age, obesity, self-perception of good/excellent health status and low education level as significant predictors. Health and nutrition education to prevent comorbidities and cerebrovascular accidents are recommended.

High prevalence of uncontrolled hypertension among patients with type 2 diabetes mellitus: a hospital-based cross-sectional study in Southwestern Uganda

INTRODUCTION

most patients with diabetes mellitus are prone to uncontrolled blood pressures despite effective medical therapies; only about 30% of hypertensive patients have their blood pressures controlled. Poor control of hypertension is associated with increased risk for cardiovascular mortality and morbidity. We aimed to determine the prevalence and associated factors of uncontrolled hypertension among patients with type 2 diabetes mellitus (T2DM) attending ambulatory care at Mbarara Regional Referral Hospital, Southwestern Uganda.

METHODS

we conducted a cross-sectional study from January to April 2019, among hypertensive T2DM patients. We used a structured questionnaire to obtain data on socio-demographic and clinical characteristics. We defined uncontrolled hypertension in participants with blood pressure ≥140/90mmHg and performed binary logistic regression to determine factors associated with uncontrolled hypertension.

RESULTS

we analyzed data of 206 hypertensive participants with concomitant T2DM, with a median age of 54 (IQR, 49-60) years, and median duration of diabetes of 4 (IQR, 3-8) years; 71% were female. The prevalence of uncontrolled hypertension was 82.5% (170/206). Isolated systolic hypertension (aOR=7.58; 95%CI: 2.18-26.36, P=0.001) and left ventricular hypertrophy (LVH) (aOR=5.38; 95%CI: 1.11-26.10, P=0.037) were significantly associated with uncontrolled hypertension.

CONCLUSION

this study revealed a high prevalence of uncontrolled hypertension among T2DM patients in Southwestern Uganda. Isolated systolic hypertension and LVH were the key factors associated with uncontrolled hypertension. We recommend optimization therapy to reduce the burden of uncontrolled hypertension among patients with T2DM especially in those with isolated systolic hypertension, and left ventricular hypertrophy, who are at higher cardiovascular risk.

Hypertriglyceridemia and Other Plasma Lipid Profile Abnormalities among People Living with Diabetes Mellitus in Ethiopia: A Systematic Review and Meta-Analysis

Background

Dyslipidemia is one of the leading causes of cardiovascular complications in diabetes mellitus (DM) patients. Though it is a major public health problem in Ethiopia, there is no a nation-wide study to determine dyslipidemia among DM patients yet. Therefore, this systematic review and meta-analysis intended to estimate the prevalence of hypertriglyceridemia and other plasma lipid abnormalities among people living with DM in Ethiopia.

Methods

We systematically searched PubMed, Google Scholar, African Journals Online, Hinari, and direct Google. Studies conducted until May 9, 2020, that reports the prevalence of dyslipidemia among people living with DM were included. The DerSimonian and Laird random-effects model was used to determine the pooled prevalence of lipid profile abnormalities. Heterogeneity was checked using the I ² statistic, whereas publication bias was tested by funnel plot and Egger's test. Besides, subgroup and sensitivity analyses were performed.

Results

We used 18 primary studies, including 4961 participants living with DM, which met the eligibility criteria for the meta-analysis of hypertriglyceridemia. The estimate of hypertriglyceridemia (≥150 mg/dl) was 48.15% (95% CI: 38.15-58.15, I ² = 98.4%) after performing the main meta-analysis using the random-effects model. The subgroup analysis showed a higher pooled estimate of hypertriglyceridemia among T2DM (57.80% (95% CI: 50.50-65.10), I ² = 92.5%), studies that used probability sampling technique (59.09% (95% CI: 43.58-74.59), I ² = 98.6%, p < 0.001), and studies from primary data sources (51.43% (95% CI: 40.72-62.13), I ² = 98.0%, p < 0.001). Moreover, the estimated pooled prevalence of the total plasma cholesterol (TC ≥ 200 mg/dl) was 34.08% (95% CI: 28.41-39.75, I ² = 92.4%), LDL - C ≥ 100 mg/dl was 41.13% (95% CI: 27.15-55.11, I² = 98.8%), and HDL ≤ 40 mg/dl for men and ≤ 50 mg/dl for women was 44.36% (95% CI: 31.82-56.90, I ² = 98.8%).

Conclusions

The pooled prevalence of hypertriglyceridemia and other lipid abnormalities among DM patients was relatively high in Ethiopia. It strongly suggests the need to give maximal attention to the adherence of DM management to reduce the circulatory lipid profile abnormalities and subsequent complications. Prospero Registration. CRD42020182291.

Effect of a nurse-led lifestyle choice and coaching intervention on systolic blood pressure among type 2 diabetic patients with a high atherosclerotic cardiovascular risk: study protocol for a cluster-randomized trial

Background

More than 50% of patients with type 2 diabetes have hypertension in Uganda. Diabetic patients with elevated systolic blood pressure experience higher all-cause mortality and cardiovascular events compared with normotensive diabetic individuals, hence escalating resource utilization and cost of care. The aim of this study is to determine the effect of a nurse-led lifestyle choice and coaching intervention on systolic blood pressure among type 2 diabetic patients with a high atherosclerotic cardiovascular risk.

Methods

This is a cluster-randomized study comprising two arms (intervention and non-intervention—control arm) with four clusters per arm with 388 diabetic patients with a high predicted 10-year atherosclerotic cardiovascular risk. The study will be implemented in 8 health facilities in Uganda. The intervention arm will employ a nurse-led lifestyle choice and coaching intervention. Within the intervention, nurses will be trained to provide structured health education, protocol-based hypertension management, and general atherosclerotic cardiovascular risk factor management, 24-h phone calls, and 2-monthly text messaging. The control group will be constituted by the usual care. The primary outcome measure is the mean difference in systolic blood pressure between the intervention and usual care groups after 6 months. The study is designed to have an 80% statistical power to detect an 8.5-mmHg mean reduction in systolic blood pressure from baseline to 6 months. The unit of analysis for the primary outcome is the individual participants. To monitor the effect of within-cluster correlation, generalized estimating equations will be used to assess the changes over time in systolic blood pressure as a continuous variable.

Discussion

The data generated from this trial will inform change in the policy of shifting task of screening of hypertension and atherosclerotic cardiovascular disease from doctors to nurses.

Trial registration

Pan African Trials Registry PACTR 202001916873358. Registered on 6 October 2019