To determine the association between dietary fiber intake and markers of cardiometabolic risk in adolescents, with blood pressure (BP) as the primary outcome of interest and secondary outcome ...measures including other established markers of childhood cardiometabolic risk, such as obesity, lipids, albuminuria, estimated glomerular filtration rate (eGFR), and uric acid.
Dietary fiber intake was assessed by two 24-hour dietary recall interviews, which were averaged and corrected for body weight. Logistic and linear regression models were used to analyze the cross-sectional association between dietary fiber and cardiometabolic markers. Participants aged 13-17 years in the National Health and Nutritional Examination Survey 2009-2018 who completed a 24-hour dietary recall survey were included. Exclusion criteria included pregnancy, small for gestational age status, and history of major health comorbidities.
In fully adjusted regression models, low dietary fiber intake was significantly associated with greater diastolic blood pressure (β = -13.29; 95% CI, -20.66 to -5.93), body mass index z-score (β = -0.91; 95% CI, -1.47 to -0.34), and uric acid (β = -0.80; 95% CI, -1.44 to -0.16).
The association found between low dietary fiber intake and poor childhood cardiometabolic risk markers indicate a need for prospective studies using fiber intake as a dietary intervention in childhood and as a tool for prevention of many chronic conditions.
Cardiovascular disease is a major cause of death in individuals diagnosed with kidney disease during childhood. Children with kidney disease often incur a significant cardiovascular burden that leads ...to increased risk for cardiovascular disease. Evidence has shown that children with kidney disease, including chronic kidney disease, dialysis, kidney transplantation, and nephrotic syndrome, develop abnormalities in cardiovascular markers such as hypertension, dyslipidemia, left ventricular hypertrophy, left ventricular dysfunction, atherosclerosis, and aortic stiffness. Early identification of modifiable risk factors and treatment may lead to a decrease of long-term cardiovascular morbidity and mortality, but evidence in this population is lacking.
Purpose
This work aims to assess the association of sleep duration with cardiometabolic risk (adiposity, blood pressure, lipids, albuminuria and A1C) and to investigate lifestyle factors (physical ...activity, light exposure, caffeine consumption and sugar consumption) associated with sleep duration in children.
Methods
A nationally representative sample of 3907 children ages 6–17 years enrolled in NHANES from 2011 to 2014 was included in this cross‐sectional study. Sleep duration was defined as the daily average time spent sleeping over 7 days as measured by a physical activity monitor (PAM). Participants without valid sleep data for ≥95% of the study were excluded. Regression models were adjusted for age, sex, race, body mass index (BMI) Z score, physical activity and light exposure.
Results
In adjusted regression models, longer sleep duration was associated with lower systolic blood pressure index (β = −3.63 * 10−5, 95% CI −6.99 * 10−5, −2.78 * 10−6, p = 0.035) and BMI Z score (β = −0.001, 95% CI −0.001, 0.000, p = 0.002). In logistic regression models, longer sleep duration was associated with lower odds of obesity (OR = 0.998, 95% CI 0.997, 0.999, p < 0.001) and overweight status (OR = 0.998, 95% CI 0.997, 0.999, p = 0.004). Greater light exposure (β = 6.64 * 10−5, 95% CI 3.50 * 10−5, 9.69 * 10−5, p < 0.001) and physical activity (β = 0.005, 95% CI 0.004, 0.006, p < 0.001) were associated with longer sleep.
Conclusion
Longer sleep duration was associated with lower blood pressure and adiposity measures in children. Improving sleep quality by increasing physical activity and light exposure in childhood may decrease the lifetime risk of cardiometabolic disease.
This study describes the incidence, associated clinical characteristics and outcomes of acute kidney injury in a pediatric cohort with COVID-19 and Multisystem Inflammatory Syndrome in Children ...(MIS-C). We performed a retrospective study of patients 18 years of age and under admitted to four New York hospitals in the Northwell Health System interned during the height of the COVID-19 pandemic, between March 9 and August 13, 2020. Acute kidney injury was defined and staged according to Kidney Disease: Improving Global Outcomes criteria. The cohort included 152 patients; 97 acute-COVID-19 and 55 with MIS-C associated with COVID-19. Acute kidney injury occurred in 8 with acute-COVID-19 and in 10 with MIS-C. Acute kidney injury, in unadjusted models, was associated with a lower serum albumin level (odds ratio 0.17; 95% confidence interval 0.07, 0.39) and higher white blood cell counts (odds ratio 1.11; 95% confidence interval 1.04, 1.2). Patients with MIS-C and acute kidney injury had significantly greater rates of systolic dysfunction, compared to those without (80% vs 49%). In unadjusted models, patients with acute kidney injury had 8.4 days longer hospitalizations compared to patients without acute kidney injury (95% confidence interval, 4.4-6.7). Acute kidney injury in acute-COVID-19 and MIS-C may be related to inflammation and/or dehydration. Further research in larger pediatric cohorts is needed to better characterize risk factors for acute kidney injury in acute-COVID-19 and with MIS-C consequent to COVID-19.
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To compare pediatric ambulatory blood pressure monitoring (ABPM) criteria with adult ABPM criteria for the diagnosis of hypertension and detection of left ventricular hypertrophy (LVH) in ...adolescents.
ABPM and echocardiography reports from adolescents age 13-21 years from 2015 to 2019 were analyzed. The concordance of hypertension based on pediatric criteria (American Heart Association 2014) was compared with adult criteria from American College of Cardiology/American Heart Association 2017 (overall BP ≥125/75 mm Hg, wake BP ≥130/80 mm Hg, sleep BP ≥110/65 mm Hg) using the Cohen kappa statistic. Logistic regression, adjusted for body mass index z score, and receiver operating characteristic curves (ROCs) compared pediatric criteria vs adult criteria in predicting LVH (left ventricular mass index >95th percentile reference values and left ventricular mass index >51 g/m2.7).
Of 306 adolescents, 140 (45.8%) had hypertension based on pediatric criteria vs 228 (74.5%) based on adult criteria; the agreement was poor (59.3%, n = 137, kappa = 0.41). A higher prevalence of LVH was captured by adult criteria only (n = 91) compared with pediatric criteria only (n = 3). Logistic regression found no significant differences between pediatric and adult criteria in the detection of LVH >95th percentile (OR 1.24, CI 0.66, 2.31, P = .51) or >51 g/m2.7 (OR 1.06, CI 0.47, 2.40, P = .89). ROCs for pediatric criteria were not significant for detecting LVH >95th percentile (0.50, P = .91) or >51 g/m2.7 (0.55, P = .45), whereas the ROC for adult criteria was significant for detecting LVH >95th percentile (0.59, P = .045) but not >51 g/m2.7 (0.63, P = .07). Although all individuals with LVH >51 g/m2.7 were hypertensive by adult criteria, 8 of these individuals were missed by pediatric criteria.
Adult criteria captured a higher prevalence of LVH and appeared to predict better LVH than pediatric criteria. A consideration to align ABPM criteria for diagnosing hypertension in adolescents with adult guidelines is warranted.
COVID-19 is the illness caused by infection with the novel coronavirus SARS-CoV-2. Although myalgia is common in adults, it has not been noted as a common symptom in children. There have been a few ...reported cases of COVID-19-associated rhabdomyolysis in adults. This case report describes a 16-year-old boy who presented with fever, myalgias, mild shortness of breath with exertion, and dark-colored urine. COVID-19 PCR was positive. His initial creatinine kinase (CK) level was 427,656 U/L. Serum creatinine was normal for age. He was treated with isotonic intravenous fluids containing sodium bicarbonate to maintain urine output of 100–200 mL/h and urine pH > 7.0. His serum creatinine remained normal throughout the hospital stay and he was discharged on hospital day 12 with a CK of 6526 U/L. To our knowledge, no pediatric cases of COVID-19-associated rhabdomyolysis have been previously reported. Adult cases of rhabdomyolysis have been reported and a few reports have noted patients with elevated CK levels without rhabdomyolysis. Given this pediatric case of COVID-19-associated rhabdomyolysis, pediatric clinicians should be aware of this complication and manage fluids appropriately in order to prevent acute kidney injury.
To describe the epidemiology of reclassification of prehypertensive and unclassified adolescents by 2022 American Heart Association pediatric ambulatory blood pressure monitoring (ABPM) guidelines, ...and to evaluate the association of the new diagnostic categories with left ventricular hypertrophy (LVH).
A single-center, retrospective review of ABPM reports from adolescents 13-21 years old, from 2015 through 2022, was performed. Adolescents with prehypertension or unclassified by 2014 guidelines were reclassified by 2022 definitions. Logistic regression models evaluated the association of reclassification phenotypes with LVH.
A majority of prehypertensive adolescents reclassified to hypertension (70%, n = 49/70). More than one-half (57%, n = 28/49) of the hypertension was isolated nocturnal hypertension, and 80% was systolic hypertension. Reclassification to hypertension was more common in males. The majority (55.6%) of unclassified adolescents were reclassified to normotension. No demographic or clinical variables were associated with reclassification categories. LVH was not associated with hypertension in the reclassified prehypertensive or unclassified groups.
The 2022 ABPM guidelines clearly define blood pressure phenotypes. However, reclassification to hypertension was not associated with an increased odds of LVH. Because most prehypertensive adolescents reclassified as hypertensive by nighttime BPs alone, this study highlights the lowered threshold for nocturnal hypertension. Prospective studies in larger, well-defined cohorts are needed to describe better the predictive value of 2022 BP phenotypes for target organ damage.
Background
Isolated nocturnal hypertension (INH) is defined as nighttime hypertension in the setting of normal daytime blood pressure (BP), diagnosed by ambulatory BP monitoring (ABPM).
Methods and ...Results
Hypertension affects 60%–80% of pediatric kidney transplant recipients, and INH is the most common type of ambulatory hypertension. INH is associated with an increased prevalence of hypertension‐mediated target organ damage such as left ventricular hypertrophy in adults and in pediatric kidney transplant recipients.
Conclusion
Ambulatory BP monitoring should be performed annually in all pediatric kidney transplant recipients to diagnose hypertension phenotypes that are not detectable by office BP such as masked hypertension, white‐coat hypertension, or INH. Isolated nocturnal hypertension in pediatric transplant patients requires study as a treatment target.
Background
Multisystem inflammatory syndrome in children (MIS-C) is associated with SARS-CoV-2. Long-term consequences of MIS-C remain unknown. The objective was to describe the prevalence and ...clinical predictors of hypertension (HTN) and elevated blood pressure (BP) following MIS-C.
Methods
A retrospective study of children ≤ 18 years admitted to a tertiary center with MIS-C was performed. HTN and elevated BP were classified as per the 2017 American Academy of Pediatrics Clinical Practice Guidelines and indexed to the 95th percentile. Data included demographics, inpatient clinical measures, and echocardiograms over 1-year follow-up. Data were analyzed using Kruskal–Wallis, chi-square, and logistic regression.
Results
Among 63 children hospitalized with MIS-C (mean age 9.7 ± 4.2 years, 58.7% male, body mass index (BMI)
z
-score 0.59 ± 1.9), 14% had HTN, and 4% had elevated BP > 30 days post-hospitalization. Multivariate linear regression analysis showed that BMI
z
-score was significantly associated with higher mean systolic (
β
= 2.664, CI = 1.307–3.980,
p
< 0.001) and diastolic (
β
= 2.547, CI = 0.605–4.489,
p
= 0.012) BP index > 30 days post-hospitalization. Acute kidney injury (AKI) (23.8%) (OR = 2.977, CI = 1.778–4.987,
p
< 0.001), peak inpatient serum creatinine (OR = 2.524, CI = 1.344–4.740,
p
= 0.004), and maximum CRP (OR = 1.009, CI = 1.002–1.016,
p
= 0.014) were all associated with increased odds of post-hospitalization HTN. Left ventricular hypertrophy was present in 46% while hospitalized, compared to 10% at last follow-up. All had return of normal systolic function.
Conclusions
Post-hospitalization HTN and elevated BP may be associated with MIS-C. Children with greater BMI or AKI may be at greater risk for developing HTN after MIS-C. MIS-C follow-up requires careful BP monitoring and antihypertensive medication consideration.
Graphical abstract
A higher resolution version of the Graphical abstract is available as
Supplementary information
The Standardizing Care to Improve Outcomes in Pediatric ESRD Collaborative is a quality improvement initiative that aims to reduce peritoneal dialysis-associated infections in pediatric patients on ...chronic peritoneal dialysis. Our objectives were to determine whether provider compliance with peritoneal dialysis catheter care bundles was associated with lower risk for infection at the individual patient level and describe the epidemiology, risk factors, and outcomes for peritonitis in the Standardizing Care to Improve Outcomes in Pediatric ESRD Collaborative.
We collected peritoneal dialysis characteristics, causative organisms, compliance with care bundles, and outcomes in children with peritonitis between October of 2011 and September of 2014. Chi-squared tests, t tests, and generalized linear mixed models were used to assess risk factors for peritonitis.
Of 734 children enrolled (54% boys; median age =9 years old; interquartile range, 1-15) from 29 centers, 391 peritonitis episodes occurred among 245 individuals over 10,130 catheter-months. The aggregate annualized peritonitis rate was 0.46 episodes per patient-year. Rates were highest among children ≤2 years old (0.62 episodes per patient-year). Gram-positive peritonitis predominated (37.8%) followed by culture-negative (24.7%), gram-negative (19.5%), and polymicrobial (10.3%) infections; fungal only peritonitis accounted for 7.7% of episodes. Compliance with the follow-up bundle was associated with a lower rate of peritonitis (rate ratio, 0.49; 95% confidence interval, 0.30 to 0.80) in the multivariable model. Upward orientation of the catheter exit site (rate ratio, 4.2; 95% confidence interval, 1.49 to 11.89) and touch contamination (rate ratio, 2.22; 95% confidence interval, 1.44 to 3.34) were also associated with a higher risk of peritonitis. Infection outcomes included resolution with antimicrobial treatment alone in 76.6%, permanent catheter removal in 12.2%, and catheter removal with return to peritoneal dialysis in 6% of episodes.
Lower compliance with standardized practices for follow-up peritoneal dialysis catheter care in the Standardizing Care to Improve Outcomes in Pediatric ESRD Collaborative was associated with higher risk of peritonitis. Quality improvement and prevention strategies have the potential to reduce peritoneal dialysis-associated peritonitis.
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