Persistent Hypertension in Children and Adolescents: A 6-Year Cohort Study

Screening and Management of Pediatric High Blood Pressure-Challenges to Implementing the Clinical Practice Guideline

PURPOSE OF REVIEW

Elevated blood pressure (BP) and hypertension in childhood convey risk for hypertension and cardiovascular events in adulthood. Early recognition of abnormal BPs is key to preventing or lessening this risk. However, the process for making the diagnosis of hypertension is complex, and overall adherence to the 2017 American Academy of Pediatrics Clinical Practice Guidelines (CPG) is poor. We will review obstacles to adherence to the CPG and approaches designed to improve the diagnosis and management of hypertension in children.

RECENT FINDINGS

Baseline data from the multi-center quality improvement intervention, "Boosting Primary Care Awareness and Treatment of Hypertension" (BP-CATCH), demonstrate that childhood hypertension remains underdiagnosed. Other studies confirm a lack of compliance with the process outlined in the CPG. The provision of electronic prompts, coaching, and education results in modest improvements. The combination of embedded medical record tools and education seems to offer the most hope for improvement.

Evaluation and Management of Elevated BP in Children in the ED

PURPOSE OF REVIEW

Pediatric hypertension has been on the rise over the past four decades. While most cases are evaluated and managed in the primary healthcare setting, some children may be referred to the emergency department (ED) for an expedited workup of elevated blood pressure or for management of hypertensive crisis.

RECENT FINDINGS

Acute severe hypertension without end-organ damage and hypertensive emergency are life-threatening conditions that healthcare providers must be prepared to accurately recognize and treat as pediatric hypertension increases in prevalence. In this article, we review the most recent definitions of elevated blood pressure and hypertension and discuss the updated literature on the evaluation and management of hypertension and hypertensive crisis of children in the ED.

Disparities in Receipt of Guideline-adherent Blood Pressure Screening: An Observational Examination of Electronic Health Record Data from a Massachusetts Healthcare System

OBJECTIVE

To describe the prevalence of blood pressure (BP) screening according to the 2017 American Academy of Pediatrics (AAP) guidelines and differences according to social vulnerability indicators.

STUDY DESIGN

We extracted electronic health record data from January 1, 2018, through December 31, 2018, from the largest healthcare system in Central Massachusetts. Outpatient visits for children aged 3-17 years without a prior hypertension diagnosis were included. Adherence was defined by the American Academy of Pediatrics guideline (≥1 BP screening for children with a body mass index [BMI] of <95th percentile) and at every encounter for children with a BMI of ≥95th percentile). Independent variables included social vulnerability indicators at the patient level (insurance type, language, Child Opportunity Index, race/ethnicity) and clinic level (location, Medicaid population). Covariates included child's age, sex, and BMI status, and clinic specialty, patient panel size, and number of healthcare providers. We used direct estimation to calculate prevalence estimates and multivariable mixed effects logistic regression to determine the odds of receiving guideline-adherent BP screening.

RESULTS

Our sample comprised 19 695 children (median age, 11 years; 48% female) from 7 pediatric and 20 family medicine clinics. The prevalence of guideline-adherent BP screening was 89%. In our adjusted model, children with a BMI of ≥95th percentile, with public insurance, and who were patients at clinics with larger Medicaid populations and larger patient panels had a lower odds of receiving guideline-adherent BP screening.

CONCLUSIONS

Despite overall high adherence to BP screening guidelines, patient- and clinic-level disparities were identified.

Guideline-Adherent Hypertension in Children and Adolescents: A Multi-Institutional Database Analysis from Taiwan

BACKGROUND/AIMS

Childhood-onset hypertension is associated with cardiovascular morbidity and adult mortality. This study aimed to assess guideline-adherent hypertension among Taiwanese youth and the agreement on hypertension between the 2017 American Academy of Pediatrics guidelines and the 2004 Fourth Report.

METHODS

In this cross-sectional study, we collected outpatient blood pressure (OBP) measurements obtained during routine care visits from a large healthcare delivery system between 2009 and 2018 to evaluate the rate of guideline-adherent hypertension and assess patient-related factors of pediatric hypertension.

RESULTS

In total, 12,469 children and adolescents who underwent three separate ≥3 OBP measurements over 33,369 person-years with a total of 95,608 BP measurements in an outpatient setting were analyzed. According to the 2017 American Academy of Pediatrics (AAP) guidelines, the rate of pediatric hypertension in the study setting, which included participants aged 1 to 17 years, ranged from 0.78 to 5.95 per 1000 persons. Although there was perfect agreement between the thresholds of the two guidelines for defining hypertension in the age groups of 1-7, 8-12, and 13-17 years (all κ statistic ≥ 0.85), the use of the AAP threshold classified more adolescents as having hypertension. Children and adolescents with hypertension often had complex chronic diseases and required substantial healthcare services in outpatient, emergency, and inpatient settings.

CONCLUSIONS

The present study provides evidence of guideline-adherent pediatric hypertension and highlights the importance of regularly monitoring blood pressure to identify and manage hypertension in children and adolescents. Further research is required to determine the impact of new thresholds on the detection of target organ damage at a pediatric age.

Physician-Pharmacist Collaborative Drug Therapy Management in Pediatric Hypertension

OBJECTIVE

Pediatric hypertension affects 2% to 5% of children and adolescents in the United States and is frequently undertreated. The increasing prevalence of pediatric hypertension and worsening physician shortage create difficulties in closing this treatment gap. Physician-pharmacist collaborations have been shown to improve patient outcomes in adult patients. Our aim was to demonstrate a similar benefit for pediatric hypertension.

METHODS

Pediatric patients whose hypertension was managed at a single pediatric cardiology clinic from January 2020 to December 2021 were enrolled in collaborative drug therapy management (CDTM). Patients whose hypertension was managed in the same clinic from January 2018 to December 2019 were used as a comparison group. The primary outcomes were achievement of at-goal blood pressure at 3, 6, and 12 months and time to control of hypertension. Secondary outcomes were appointment adherence and serious adverse events.

RESULTS

A total of 151 patients were included in the CDTM group, and 115 patients were included in the traditional care group. Of those, 100 CDTM patients and 78 traditional care patients were assessed for the primary outcome. Fifty-four (54%) CDTM patients and 28 (36%) traditional care patients achieved at-goal blood pressure at 12 months (OR, 2.09; 95% CI, 1.14-3.85). Appointment non-adherence was 9.4% for CDTM and 16% for traditional care (OR, 0.54; 95% CI, 0.35-0.82). Adverse events were similar between groups.

CONCLUSIONS

CDTM increased rates of at-goal blood pressure without increased adverse events. Physician-pharmacist collaboration may improve treatment of hypertension in pediatric patients.

Persistence and determinants of blood pressure phenotypes according to office and ambulatory blood pressure measurements in youth

Ambulatory BP monitoring is increasingly used in children and adolescents, and the persistence of discrepant phenotypes, such as white coat or masked hypertension, is a relevant issue. The objective of this study was to assess the persistence of BP phenotypes over time and the factors related to their persistence. The study included 582 children and adolescents (9.4  ±  2.8 years of age) of both sexes (51% females) referred for routine health maintenance. Anthropometric parameters and office and 24-h ABPM measurements were obtained twice (interval 19.5  ±  6.9 months). BP classification and phenotypes were qualified using the 2016 ESH Guidelines. The correlation coefficient and kappa statistics were used to assess the persistence of phenotypes, and the related factors were evaluated using logistic regression. Based on both systolic and diastolic BP measurements, 91.6%, 16%, 17.2% and 13.7% of the subjects with true normotension, sustained HTN, white coat HTN and masked HTN, respectively, remained in the same category (overall agreement 74.2%, kappa 0.20). The multivariate model predicted the lack of persistence and correctly classified 90.3% of the subjects, with the pathological baseline BP phenotype (mainly masked HTN) being the independent variable that contributed most to the model. Excluding the phenotypes, the rest of the model explained 14% of the lack of persistence, and a high office SBP and high waist circumference were related to the lack of persistence. Furthermore, subjects who experienced an increase in their BMI z score and change in their BMI category were at risk of a lack of persistence. In conclusion, children, especially those with BP phenotypes different from true normotension, should be re-evaluated because a large percentage are likely to become normotensive.

An analysis of sex differences and socioeconomic deprivation among Canadian children with high blood pressure: a retrospective, cross-sectional study

BACKGROUND

Understanding which children are at highest risk for high blood pressure (HBP) can inform surveillance and treatment. This study evaluated sex differences in childhood HBP and its associations with socioeconomic status.

METHODS

This retrospective cross-sectional study assessed 74,233 children with data from a national primary care electronic medical record database. Differences between sex and material and social deprivation scores for children with and without HBP were examined. Covariates included age, BMI z-score, diabetes, hyperlipidemia, and depression. HBP was defined as > 90^th percentile for < 13-year-olds, and ≥ 120/80 for age ≥ 13 years on 2 separate occasions between 2010 and 2017.

RESULTS

The prevalence of HBP was 10.2% in males and 7.6% in females (p < 0.0001). Children with HBP had higher BMI z-scores (0.66 vs. 0.18, p < 0.0001), and higher rates of diabetes (1.31 vs. 0.54%, p < 0.0001), depression (9.89 vs. 7.11%, p < 0.0001), and hyperlipidemia (2.82 vs. 0.86%, p < 0.0001). In univariate regression analyses, boys in the most materially deprived quintile had increased odds of HBP (OR 1.24 (95% CI 1.08-1.43)), whereas females did not (OR 1.11 (95% CI 0.95-1.29)). In multivariate regression, male sex was associated with HBP with adjusted OR of 1.39 (95% CI 1.24-1.55). After statistical adjustment, material deprivation was no longer significant (aOR 1.05, 95% CI 0.94-1.17).

CONCLUSIONS

Male sex is associated with HBP in Canadian children. This study also suggests a possible association between material deprivation and HBP, particularly in boys. Further study is required to better understand this relationship. A higher resolution version of the Graphical abstract is available as Supplementary information.

Prevalence of hypertension and hypertension phenotypes after three visits in Chinese urban children

OBJECTIVE

This study aims to evaluate the prevalence of hypertension and hypertension subtypes among Chinese children aged 6-17 years in a multicenter school-based sample by three separate screenings.

METHODS

Students from six major cities in China (Changchun, Beijing, Jinan, Shanghai, Chongqing, and Chengdu) were recruited in this cross-sectional survey during 2012 and 2015. Each participant was seated and had three consecutive blood pressure measurements on the right arm in the morning by an automated oscillometric device and the hypertensive ones were followed to the next visit. Hypertension was diagnosed by BP references for Chinese children and adolescents in 2010.

RESULTS

Data from 44 396 children aged 6-17 years were included in analysis, 50.9% of whom were boys. The prevalence of confirmed hypertension after three separate screenings was 4% in the total population, 5% in boys, and 3% in girls, respectively. The prevalence of confirmed isolated systolic hypertension (ISH), isolated diastolic hypertension (IDH), and systolic and diastolic hypertension (SDH) in the total population was 2.7, 0.3 and 1%, respectively.

CONCLUSION

Around 4% urban Chinese children and adolescents aged 6 -17 years were hypertensive after three separate BP screenings in 2012 -2015. ISH was the most frequent form of hypertension in children.

High blood pressure in children and adolescents: current perspectives and strategies to improve future kidney and cardiovascular health

Hypertension is one of the most common causes of preventable death worldwide. The prevalence of pediatric hypertension has increased significantly in recent decades. The cause of this is likely multifactorial, related to increasing childhood obesity, high dietary sodium intake, sedentary lifestyles, perinatal factors, familial aggregation, socioeconomic factors, and ethnic blood pressure (BP) differences. Pediatric hypertension represents a major public health threat. Uncontrolled pediatric hypertension is associated with subclinical cardiovascular disease and adult-onset hypertension. In children with chronic kidney disease (CKD), hypertension is also a strong risk factor for progression to kidney failure. Despite these risks, current rates of pediatric BP screening, hypertension detection, treatment, and control remain suboptimal. Contributing to these shortcomings are the challenges of accurately measuring pediatric BP, limited access to validated pediatric equipment and hypertension specialists, complex interpretation of pediatric BP measurements, problematic normative BP data, and conflicting society guidelines for pediatric hypertension. To date, limited pediatric hypertension research has been conducted to help address these challenges. However, there are several promising signs in the field of pediatric hypertension. There is greater attention being drawn on the cardiovascular risks of pediatric hypertension, more emphasis on the need for childhood BP screening and management, new public health initiatives being implemented, and increasing research interest and funding. This article summarizes what is currently known about pediatric hypertension, the existing knowledge-practice gaps, and ongoing research aimed at improving future kidney and cardiovascular health.