The factors influencing clinician use of hypertension guidelines in different resource settings: a qualitative study investigating clinicians' perspectives and experiences

Attitude, knowledge, and practice of medical students and pediatric physicians towards blood pressure measurement and hypertension in children: The impact of educational sessions

Accurate blood pressure measurement in pediatric patients is crucial for the proper diagnosis and management of hypertension in children. Understanding the level of attitude, knowledge, and practices (AKP) of medical students and physicians on pediatric blood pressure (BP) measurement and hypertension is essential. This is to assess their awareness of this subject which is often overlooked and where research is lacking. This study aims to evaluate the extent of AKP, among medical students and pediatric doctors regarding hypertension and BP measurement in children, and to determine the impact of educational sessions on their AKP. In a cross-sectional study, a self-designed questionnaire composed of several questions about AKP was prepared and validated. After obtaining informed consent, the questionnaire was distributed online to medical students and pediatric physicians with 168 responses, 140 medical students, and 28 pediatric physicians. This was followed by an educational awareness session about measuring blood pressure and hypertension in children. After the session, a post-awareness questionnaire was administered, gathering 145 responses. The average scores for AKP were calculated, and pre- and post-awareness session responses were compared within each group, P < .05 was regarded as significant. Among the medical students, 53.6% were somewhat aware of pediatric hypertension; 29.3% measured BP during their pediatric course, and 85% did not participate in pediatric hypertension education. Among physicians, 12.5% were exposed to pediatric patients with hypertension in the past year, 25% never measured BP in routine pediatric visits, and only 25% used normative BP tables. Average scores (out of 5) for attitude, knowledge, and practices were 3.57 (0.55), 2.51 (0.71), and 2.42 (0.68), respectively, with significantly higher scores in post-educational session, 4.56 (0.47), 4.06 (0.72), and 4.25 (0.76), respectively. The AKP among medical students and pediatric physicians regarding pediatric hypertension are inadequate, ranging from little to moderate. The impact of educational sessions is significant and very useful and should be incorporated into the teaching of medical students especially in the last years of study and ground meetings of pediatric physicians.

An assessment of variation in quality of hypertension guidelines across income settings using the AGREE II tool

Background

Hypertension affects over one billion people worldwide, posing a significant global health burden. Clinical practice guidelines could play a key role in guiding healthcare providers in improving hypertension management. However, how the quality of hypertension CPGs differs across country income settings is not well understood. This study aims to explore variation in the quality of hypertension CPGs, comparing low-, middle-, and high-income countries, using the Appraisal of Guidelines for Research and Evaluation (AGREE) II tool.

Methods

A Medline and grey literature search was conducted to identify hypertension CPGs in English from every country from January 2012 to September 2022. Two reviewers independently assessed and scored each CPG against the AGREE II tool. Results were described and the Kruskal-Wallis test was used to test for statistically significant difference in the domain scores across country income groups.

Results

Forty-three CPGs were included for analysis from across income settings. Guidelines from HICs scored higher in four out of the six domains. The highest scoring domain was 4: "clarity and presentation" (median score 83%), the lowest scoring was domain 6 "editorial independence" (median score 0%). Statistically significant differences between income settings were observed for domain 3 "rigour of development" (p <0.001), domain 4 "clarity and presentation" (p = 0.03) and domain 6 "editorial independence" (p = 0.04).

Conclusions

Whilst some variation exists in guideline quality across country income levels, the greatest degree of variation exists across the domains of the AGREE II tool. Global efforts to improve the quality of hypertension guidelines should focus on the transparent statement of editorial independence of guideline committees and apply rigorous replicable methods in the authoring of guidelines. Establishing national and international communities of practice to collaborate across income settings may reduce duplication of resource, allow for shared learning and promote the development of high-quality hypertension CPGs.

Examining the Hypertension Control Cascade in Adults With Uncontrolled Hypertension in the US

Importance

Uncontrolled hypertension is a major contributor to cardiovascular disease (CVD) in the US.

Objective

To determine the prevalence of hypertension control cascade outcomes (hypertension awareness, treatment recommendations, and medication use) among individuals with uncontrolled hypertension to inform action across cascade levels.

Design, Setting, and Participants

This weighted cross-sectional study used January 2017 to March 2020 National Health and Nutrition Examination Survey (NHANES) data from noninstitutionalized adults aged 18 years or older in the US with uncontrolled hypertension. Data analysis occurred from January to February 2024.

Exposure

Calendar year of response to the NHANES survey.

Main Outcomes and Measures

Mean blood pressure (BP) was computed using up to 3 measurements. Uncontrolled hypertension was defined as systolic BP of 130 mm Hg or greater or diastolic BP of 80 mm Hg or greater, regardless of medication use. Outcomes included patient awareness of hypertension, treatment recommendations, and medication use. To estimate population totals by subgroup, the age-standardized proportion of each outcome was multiplied by the estimated number of adults with uncontrolled hypertension.

Results

The study included 3129 US adults with uncontrolled hypertension (1675 male [weighted percentage, 52.3%]; 775 aged 18 to 44 years [weighted percentage, 29.4%]; 1306 aged 45 to 64 years [weighted percentage, 41.4%]; 1048 aged 65 years or older [weighted percentage, 29.2%]), resulting in a population estimate of 100.4 million adults (weighted percentage, 83.7%) with uncontrolled hypertension. More than one-half of study participants (57.8 million adults [weighted percentage, 57.6%]) were unaware that they had hypertension, and of the 35.0 million who were aware and met criteria for antihypertensive medication, 24.8 million (weighted percentage, 70.8%) took the medication but had hypertension that remained uncontrolled. These negative outcomes in the hypertension control cascade occurred across demographic groups, with notably high prevalence among younger adults and individuals engaged in health care. Among an estimated 30.1 million adults aged 18 to 44 years with hypertension, 10.4 of 11.3 million females (weighted percentage, 91.8%) and 17.7 million of 18.8 million males (weighted percentage, 94.3%) had uncontrolled hypertension. Of the 10.4 million females, 7.2 million (weighted percentage, 68.8%) were unaware of their hypertension status, and of the 17.7 million males, 12.0 million (weighted percentage, 68.1%) were unaware. Additionally, 9.9 of 13.0 million adults with uncontrolled hypertension (weighted percentage, 75.7%) reported no health care visits in the past year and were unaware. Conversely, among 70.6 million adults with uncontrolled hypertension reporting 2 or more health care visits, approximately one-half (36.6 million [weighted percentage, 51.8%]) were unaware.

Conclusions and Relevance

In this cross-sectional study, more than 50% of adults with uncontrolled hypertension in the US were unaware of their hypertension and were untreated, and 70.8% of those who were treated had hypertension that remained uncontrolled. These findings have serious implications for the nation's overall health given the association of hypertension with increased risk for CVD.

Resistant Hypertension: Disease Burden and Emerging Treatment Options

PURPOSE OF REVIEW

To define resistant hypertension (RHT), review its pathophysiology and disease burden, identify barriers to effective hypertension management, and to highlight emerging treatment options.

RECENT FINDINGS

RHT is defined as uncontrolled blood pressure (BP) ≥ 130/80 mm Hg despite concurrent prescription of ≥ 3 or ≥ 4 antihypertensive drugs in different classes or controlled BP despite prescription of  ≥ to 4 drugs, at maximally tolerated doses, including a diuretic. BP is regulated by a complex interplay between the renin-angiotensin-aldosterone system, the sympathetic nervous system, the endothelin system, natriuretic peptides, the arterial vasculature, and the immune system; disruption of any of these can increase BP. RHT is disproportionately manifest in African Americans, older patients, and those with diabetes and/or chronic kidney disease (CKD). Amongst drug-treated hypertensives, only one-quarter have been treated intensively enough (prescribed > 2 drugs) to be considered for this diagnosis. New treatment strategies aimed at novel therapeutic targets include inhibition of sodium-glucose cotransporter 2, aminopeptidase A, aldosterone synthesis, phosphodiesterase 5, xanthine oxidase, and dopamine beta-hydroxylase, as well as soluble guanylate cyclase stimulation, nonsteroidal mineralocorticoid receptor antagonism, and dual endothelin receptor antagonism. The burden of RHT remains high. Better use of currently approved therapies and integrating emerging therapies are welcome additions to the therapeutic armamentarium for addressing needs in high-risk aTRH patients.

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.

Exploring the Challenges Faced by Primary Care Physicians in Providing Optimal Care for Patients With Hypertension: A Qualitative Study

BACKGROUND

Globally, most patients with hypertension have suboptimal blood pressure (BP) control. Multiple barriers prevent primary care physicians (PCPs) from effectively caring for these patients. This study aimed to explore the challenges faced by PCPs in providing optimal care for patients with hypertension, with a specific focus on identifying new barriers.

METHODS

This qualitative study involved 17 PCPs across 5 primary care clinics in Singapore. A trained researcher conducted individual in-depth interviews using a topic guide. Purposive sampling was employed to ensure adequate representation of seniority until data saturation was achieved. The audio-recorded interviews were transcribed verbatim and independently checked. The data were managed using NVivo and thematic analysis was conducted.

RESULTS

New barriers were divided into patient, physician, drug, and systemrelated factors. Patient factors included a preference for natural health remedies and the inconvenience of blood tests. Meanwhile, physicians faced challenges diagnosing and treating patients with various BP phenotypes and BP variability. The initiation of dual therapy was a drugrelated barrier. Finally, system factors included the suboptimal layout of the electronic medical records (EMR) that impeded effective hypertension management.

CONCLUSION

A multi-pronged approach is required to address the significant barriers to providing optimal hypertension care. Patients should be empowered through education and minimizing the inconvenience of medication titrations. Additionally, physicians should be better equipped to diagnose and treat patients with more challenging BP phenotypes. Finally, improved access to combination pills and an optimized EMR would contribute to improved care for patients with hypertension.