Incident Heart Failure Risk Reclassification With Race-Independent Estimated Glomerular Filtration Rate: A National Heart, Lung, and Blood Institute Pooled Cohorts Analysis.

BACKGROUND: This study compared the predictive value of the race-independent creatinine- and cystatin C-based estimated glomerular filtration rate (eGFRcr-cys) and the race-dependent creatinine-based eGFR (eGFRcr) for incident heart failure (HF). METHODS: This study combined the participant-level data from ARIC (Atherosclerosis Risk in Communities) (visit 4) and MESA (Multi-Ethnic Study of Atherosclerosis) (visit 1) to calculate eGFRcr-cys and eGFRcr. The primary outcome of the study was adjudicated incident HF over a follow-up period of 10 years. Multivariable Cox models were used to assess the risk of incident HF with the quartiles of eGFRcr-cys and eGFRcr. RESULTS: Among 15,615 individuals (median age: 62 [57-68] years; 55.0% females; 23.9% Black), the median eGFRcr-cys and eGFRcr were 91.4 (79.4, 102.0) mL/min/1.73m2 and 84.7 (72.0, 94.7) mL/min/1.73m2, respectively. Compared with the fourth quartile of eGFRcr-cys, the hazard ratio for incident HF was 1.02 (95% CI:0.80-1.30) in the third quartile, 1.02 (95% CI:0.80-1.30) in the second quartile, and 1.47 (95% CI:1.16-1.86) in the first quartile. Compared with the 4th quartile of the eGFRcr, the risk of incident HF was similar in the 3rd (HRadj:0.90 [95% CI:0.73-1.12]), 2nd (HRadj: 0.96 [95% CI:0.77-1.20]), and 1st (HRadj:1.15 [95% CI:0.93-1.44]) quartiles. C-statistics were similar for the multivariable-adjusted Cox models for incident HF using eGFRcr (0.80 [0.79-0.81]) and eGFRcr-cys (0.80 [0.79-0.82]). CONCLUSION: The eGFRcr and eGFRcr-cys had comparable predictive values for incident HF.

High-Dose Inhaled Nitric Oxide in Acute Hypoxemic Respiratory Failure Due to COVID-19: A Multicenter Phase II Trial.

Rationale: The effects of high-dose inhaled nitric oxide on hypoxemia in coronavirus disease (COVID-19) acute respiratory failure are unknown. Objectives: The primary outcome was the change in arterial oxygenation (PaO2/FiO2) at 48 hours. The secondary outcomes included: time to reach a PaO2/FiO2.300mmHg for at least 24 hours, the proportion of participants with a PaO2/FiO2.300mmHg at 28 days, and survival at 28 and at 90 days. Methods: Mechanically ventilated adults with COVID-19 pneumonia were enrolled in a phase II, multicenter, single-blind, randomized controlled parallel-arm trial. Participants in the intervention arm received inhaled nitric oxide at 80 ppm for 48 hours, compared with the control group receiving usual care (without placebo). Measurements and Main Results: A total of 193 participants were included in the modified intention-to-treat analysis. The mean change in PaO2/FiO2 ratio at 48 hours was 28.3mmHg in the intervention group and 21.4mmHg in the control group (mean difference, 39.1mmHg; 95% credible interval [CrI], 18.1 to 60.3). The mean time to reach a PaO2/FiO2.300mmHg in the interventional group was 8.7 days, compared with 8.4 days for the control group (mean difference, 0.44; 95% CrI, 23.63 to 4.53). At 28 days, the proportion of participants attaining a PaO2/FiO2.300mmHg was 27.7% in the inhaled nitric oxide group and 17.2% in the control subjects (risk ratio, 2.03; 95% CrI, 1.11 to 3.86). Duration of ventilation and mortality at 28 and 90 days did not differ. No serious adverse events were reported. Conclusions: The use of high-dose inhaled nitric oxide resulted in an improvement of PaO2/FiO2 at 48 hours compared with usual care in adults with acute hypoxemic respiratory failure due to COVID-19.

Accuracy of Xpert® MTB/RIF in diagnosing extrapulmonary tuberculosis in Indian children.

Background Diagnosing extrapulmonary tuberculosis (EPTB) can be challenging because of a variety of presentations. We assessed the accuracy of the Xpert MTB/RIF assay in diagnosing EPTB in children. Methods Of the 255 children diagnosed to have tuberculosis (TB) who underwent testing by the Xpert MTB/ RIF assay at the TB clinic from December 2014 to April 2017, 182 had EPTB and were included in the study. The diagnostic accuracy, specificity and sensitivity of the Xpert assay were calculated with Mycobacterium growth indicator tube (MGIT) as a reference standard. Results Lymph node TB was present in 58 (32%) children, 37 (20%) had neurological TB, 36 (20%) had bone TB, 31 (17%) had pleural TB, 15 (8%) had abdominal TB, 2 (1%) had abscess, 2 (1%) had congenital TB and disseminated TB was seen in 1 (0.4%) child. Xpert MTB/RIF assay was positive in 84 (46.2%) patients. The sensitivity and specificity of the Xpert MTB/RIF assay were 72% and 72.04%, respectively. Compared to MGIT, a kappa coefficient of 0.44 shows moderate agreement between the Xpert assay and MGIT. The sensitivity of Xpert MTB/RIF assay in abdominal TB, bone TB, lymph node TB, neurological TB and pleural TB was 50% (15%-85%), 72.7% (15.9%- 86.9%), 80.8% (62.1%-91.5%), 75% (50.5%-90%) and 25% (4.6%-70%), respectively. The specificity of abdominal TB, bone TB, lymph node TB, neurological TB and pleural TB was 83.3% (43.7%-97%), 69.2% (42.4%- 87.3%), 55.2% (37.6%-71.6%), 85% (64%-94.8%) and 82.6% (62.9%-93%), respectively. Forty-seven (26%) patients had drug-resistant TB (DR-TB), of which 15 (8%) were rifampicin-resistant (RR), 2 (1%) were polyresistant, 14 (8%) had multi-DR (MDR), 15 (8%) had pre-extremely DR (XDR) and 1 (1%) had XDR-TB. Of the 15 patients with MDR-TB, Xpert MTB/RIF assay detected only 10 (71%) as RR (p=0.06). Of the 15 pre-XDR cases, Xpert MTB/RIF detected only 8 (53%) as RR (p=0.02). Conclusion Xpert MTB/RIF assay is useful in the diagnosis of EPTB. It shows good concordance with MGIT. However, it may be negative in patients with DR-TB.

Incomplete Kawasaki Disease in an Infant with Cholangitis Post Kasai Surgery for Biliary Atresia.

Kawasaki's disease (KD) is a systemic vasculitis often seen with viral and bacterial infections. Cholangitis is a known complication in biliary atresia patients post Kasai Portoenterostomy (KP). However KD, in a biliary atresia patient post KP has not been previously reported. A 1 years old girl who had previously undergone a KP for BA, presented with cholangitis which was presumed to be caused by a previous enterobacter infection that she had 2 months ago. However, on treating the cholangitis, the patient developed fever again after ten days which persisted even after changing the antibiotics. By this time she also displayed three of five characteristic features of KD in form of fever, strawberry tongue and cervical adenopathy. Investigations showed high ESR, high CRP, thrombocythemia and dilated coronary vessels on echocardiography. Treatment with intravenous immunoglobulin (IVIG) and steroids caused the symptoms to subside.

Natriuretic Peptide Normative Levels and Deficiency: The National Health and Nutrition Examination Survey.

BACKGROUND: Natriuretic peptides (NPs) are hormones with a range of key functions vital for cardiometabolic health. However, the reference ranges of NPs and the prevalence of NP deficiency in the healthy United States population remains poorly defined. OBJECTIVES: This study aims to establish the reference range for N-terminal pro-B-type natriuretic peptide (NT-proBNP) values and to assess the prevalence of NP deficiency in a nationally representative healthy United States population. METHODS: Healthy participants with NT-proBNP measurements from the 1999-2004 National Health and Nutrition Examination Survey were included. Weighted multivariable-adjusted linear regression models were used to assess the adjusted percentage difference of NT-proBNP concentrations by sex and race and ethnicity. NP deficiency was defined as concentrations <2.5th percentile in the study cohort. RESULTS: Among 18,145 individuals (median age: 33.9 years [IQR: 17.1-49.0 years], 49.8% males, and 68.5% non-Hispanic White individuals), females had similar NT-proBNP concentrations in the 1-10 years group (4.2% [95% CI: -3.3% to 12.2%]), and highest differences in the 20-30 years group (150.5% [95% CI: 123.5%-180.8%]) compared with males in their respective age groups. Compared with non-Hispanic White individuals, non-Hispanic Black individuals had lower NT-proBNP concentrations in the 1- to 10-years group (19.6% [95% CI: 10.7%-27.6%]), and these differences were most pronounced in the 30-40 years group (40.2% [95% CI: 33.7%-46.0%]). An estimated 9.1 million United States individuals had NP deficiency. NP deficiency was associated with a higher risk of cardiometabolic diseases such as hypertension, dyslipidemia, obesity, and insulin resistance. CONCLUSIONS: This study establishes the normative NP concentrations across the lifespan of a healthy United States population.

High-proportion spliced-in titin truncating variants in African and European ancestry in the All of Us Research Program.

High-proportion spliced-in titin truncating variants (hiPSI TTNtvs) have been associated with an increased risk of atrial fibrillation, dilated cardiomyopathy (DCM) and heart failure in individuals of European ancestry1. However, similar data in individuals of African ancestry are lacking. Here we examined the association of hiPSI TTNtvs with atrial fibrillation, DCM and heart failure in individuals of African ancestry using data from the All of Us Research Program. Among 38,154 individuals of African ancestry, 169 (0.4%) individuals carried a hiPSI TTNtv. hiPSI TTNtv carriers were at a higher risk of developing atrial fibrillation (adjusted hazard ratio (HRadj) 2.42, 95% confidence interval (CI) 1.52-3.85), DCM (HRadj 2.82, 95% CI 1.81-4.39) and heart failure (HRadj 2.07, 95% CI 1.43-3.00) compared with noncarriers. The association of hiPSI TTNtvs with atrial fibrillation, DCM and heart failure was similar in individuals of African ancestry and those of European ancestry. Therefore, genetic testing for hiPSI TTNtvs may permit early identification of carriers and support preventive measures to reduce the likelihood of heart failure development both in individuals of European ancestry and in individuals of African ancestry.

Titin truncating variants, cardiovascular risk factors and the risk of atrial fibrillation and heart failure.

High-proportion spliced-in (hiPSI) titin truncating variant (TTNtv) carriers have a higher risk of atrial fibrillation and heart failure1. However, the role of cardiovascular risk factors in modifying the risk of atrial fibrillation and heart failure attributed to hiPSI TTNtv carriers is unknown. Here, we investigate the role of cardiovascular risk, quantified using the pooled cohort equations (PCEs), in influencing the hazard of outcomes attributed to hiPSI TTNtvs among UK Biobank participants without baseline cardiovascular disease. The cohort was stratified based on hiPSI TTNtv carrier status and cardiovascular risk (low: <5%, intermediate: 5.0-7.5% and high: >7.5%). The primary outcome was a composite of atrial fibrillation, heart failure or death. TTNtv noncarriers with low cardiovascular risk were used as the reference group for all analyses. Among 179,752 participants (median age: 56 (49, 62) years; 57.5% female), the risk of the primary outcome was lower in hiPSI TTNtv carriers with low cardiovascular risk (adjusted hazard ratio: 2.23 (95% confidence interval: 1.62-3.07)) than those with high cardiovascular risk (adjusted hazard ratio: 8.21 (95% confidence interval: 6.63-10.18)). A favorable cardiovascular risk factor profile may partially offset the risk of clinical outcomes among hiPSI TTNtv carriers.

Hypertension and Brachydactyly Syndrome: Genetic Insights and a Novel Presentation.

Phosphodiesterase 3A (PDE3A) gene mutations have recently been associated with hypertension and brachydactyly syndrome (HTNB). This report shows how the recent recognition of the role of the PDE3A gene in HTNB facilitated the diagnosis of HTNB in a 20-year-old female who could not be diagnosed at her initial presentation at 6 years of age.

Determinants of transthyretin levels and their association with adverse clinical outcomes among UK Biobank participants.

Transthyretin is a transport protein whose misfolding has been implicated in the development of cardiac amyloidosis. Here, we examine the clinical correlates of transthyretin levels, the differences in transthyretin levels according to the pathogenic V142I TTR variant carrier status, and the association of transthyretin levels with outcomes among 35,206 UK Biobank participants who underwent plasma profiling and were free from prevalent cardiovascular disease and chronic renal disease. Transthyretin levels are lower in females, decrease with increasing C-reactive protein levels, and increase with body mass index, systolic blood pressure, diastolic blood pressure, total cholesterol, albumin levels, triglyceride levels, and creatinine levels. V142I non-carriers [n = 35,167, mean: -0.1 (0.3)] have higher adjusted transthyretin levels compared with the carriers [n = 39, mean: -0.5 (0.3)] (p:<0.001). A standard deviation decrease in transthyretin levels increases the risk of heart failure [HRadj: 1.17 (95% Confidence Interval = 1.08-1.26)] and all-cause mortality [HRadj: 1.18 (95% Confidence Interval = 1.14-1.24)]. This study shows that individuals with low transthyretin levels, such as those carrying the V142I variant, are at a higher risk of heart failure and mortality.

Association of Life's Essential 8 and Simple 7 Scores With Mortality: Comparison With Pooled Cohort Equation.

Background: In 2022, the Life's Simple 7 (LS7) score was replaced with the Life's Essential 8 (LE8) score as a tool to measure cardiovascular health. The risk prediction values of LE8 and LS7 scores for mortality have not been compared. Additionally, the risk prediction value of these scores has not been compared with the pooled cohort equations (PCE) in individuals aged 40 to 79 years. Objectives: This study compared the risk prediction value of the: 1) LE8 and LS7 scores in the overall population; and 2) LE8 score, LS7 score, and PCE in the 40- to 79-year-old age group for all-cause and cardiovascular mortality in a nationally representative US population. Methods: The LS7 and LE8 scores and the PCE were calculated in the National Health and Nutrition Examination Survey cycles 2007 to 2018. All-cause and cardiovascular mortality were identified by linking the participants to the National Death Index. The C-statistics of the respective weighted Cox models were used to compare the risk prediction value of the standardized scores. Results: Among 21,721 individuals included, the C-statistics for all-cause mortality were 0.823 (95% CI: 0.803-0.843) and 0.819 (95% CI: 0.799-0.838) in the LE8 and LS7 score-based models, respectively. The C-statistics for cardiovascular mortality were 0.887 (95% CI: 0.857-0.905) for the LE8 score-based model and 0.883 (95% CI: 0.861-0.905) for the LS7 score-based model. Among 12,943 individuals aged 40 to 79 years, the C-statistics for the outcome of all-cause mortality were 0.756 (95% CI: 0.732-0.779), 0.674 (95% CI: 0.646-0.701), and 0.681 (95% CI: 0.656-0.706) for the PCE, LS7 score, and LE8 score-based models, respectively. Conclusions: The LS7 and LE8 scores had similar risk prediction values for all-cause and cardiovascular mortality. Among 40- to 79-year-old individuals, the PCE had better risk discrimination in the LE8 and LS7 scores in predicting all-cause mortality.

Trends of Lipid Concentrations, Awareness, Evaluation, and Treatment in Severe Dyslipidemia in US Adults.

OBJECTIVE: To evaluate the contemporary trends of lipid concentrations, cholesterol evaluation, hypercholesterolemia awareness, and statin use among individuals with severe dyslipidemia (low-density lipoprotein cholesterol [LDL-C] level ≥190 mg/dL) between 2011 and 2020. PATIENTS AND METHODS: This serial cross-sectional analysis included nonpregnant adults ≥20 years of age from the National Health and Nutrition Examination Survey between 2011 and 2020. Age-adjusted weighted trends of LDL-C, triglycerides, cholesterol evaluation in the past 5 years, hypercholesterolemia awareness, and documented statin use among individuals with severe dyslipidemia were estimated. RESULTS: Among 24,722 participants included, the prevalence of severe dyslipidemia was 5.4% (SE: 0.2%) which was stable across the study period (Ptrend=.78). Among individuals with severe dyslipidemia (mean age: 55.3 [SE: 0.7] years; 52.2% females; 68.8% non-Hispanic White), LDL-C (224.3 [SE: 4.2] mg/dL in 2011-2012 to 224.2 [SE: 4.6] mg/dL in 2017-2020; Ptrend =.83), and triglyceride (123.3 [SE: 1.1] mg/dL in 2011-2012 to 101.8 [SE: 1.1] mg/dL in 2017-2020; Ptrend=.13), levels remained stable from 2011 to 2020. The rates of cholesterol evaluation in the past 5 years (72.0% [SE: 5.7%] in 2011-2012 to 78.0% [SE: 4.8%] in 2017-2020; Ptrend=.91), hypercholesterolemia awareness (48.1% [SE: 5.5%] in 2011-2012 to 51.9% [SE: 5.8%] in 2017- 2020; Ptrend=.77), and documented statin use (34.7% [SE: 4.5%] in 2011-2012 to 33.4% [SE: 4.0%] in 2017-2020; Ptrend=.28) remained stagnant in individuals with severe dyslipidemia between 2011 and 2020. CONCLUSION: Among individuals with severe dyslipidemia, cholesterol evaluation and hypercholesterolemia awareness rates were stable at ∼75% and ∼50% in the past decade. Only ∼34% of individuals with severe dyslipidemia took statins between 2011 and 2020, which likely contributed to the stable LDL-C levels noted across the study period. Further investigations into the determinants of statin use and adherence to statins are needed.

Procedural Volume and Outcomes After Septal Reduction Therapies in Hypertrophic Obstructive Cardiomyopathy.

BACKGROUND: Septal myectomy and alcohol septal ablation (ASA) are septal reduction therapies for patients with symptomatic obstructive hypertrophic cardiomyopathy. Operator and hospital volume may influence outcomes, but contemporary data on this relationship are limited. METHODS AND RESULTS: This retrospective cohort study used data from the Vizient Clinical Data Base (2016-2022). Patients with undergoing septal myectomy and ASA were identified using International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes and stratified into low-, medium-, and high-volume groups based on annualized operator and hospital volumes. The outcomes were 30-day in-hospital mortality and 90-day readmission, analyzed using multivariable adjusted logistic and Cox models. Among 5725 patients with hypertrophic cardiomyopathy (3990 septal myectomy; 1735 ASA), most operators and hospitals performed <10 procedures annually. For septal myectomy, low-volume operators were associated with higher odds of 30-day mortality (adjusted odds ratio [aOR], 1.86 [95% CI, 1.11-3.15]) and greater risk for 90-day readmission (aOR, 1.51 [95% CI, 1.22-1.88]), and medium-volume operators had higher odds of 30-day mortality (aOR, 1.93 [95% CI, 1.05-3.55]). Medium-volume hospitals had higher 30-day mortality (aOR, 2.29 [95% CI, 1.32-3.99]), with low-volume hospitals showing greater risk for 90-day readmission (aOR, 1.60 [95% CI, 1.14-2.23]). For ASA, low- and medium-volume operators had increased 30-day mortality (aOR, 2.99 [95% CI, 1.15-7.75] and aOR, 3.86 [95% CI, 1.30-11.46]), but the risk of 90-day readmission was similar. Hospital volumes did not significantly impact outcomes for ASA. CONCLUSIONS: Low operator and hospital volumes were associated with worse outcomes for septal reduction therapies, emphasizing the need to refer patients with hypertrophic cardiomyopathy to high-volume centers with experienced operators.

Carpal Tunnel Syndrome and Transthyretin Amyloidosis in the All of Us Research Program.

OBJECTIVE: To evaluate the association of carpal tunnel syndrome (CTS) with incident heart failure and incident amyloidosis and to assess the risk of CTS in pathogenic TTR genetic variant carriers. METHODS: This prospective cohort study included multiethnic US adults 18 years of age and older without prevalent heart failure and amyloidosis with available genotypic data from the All of Us Research Program. The primary outcomes were incident heart failure and incident amyloidosis. The association of incident heart failure and incident amyloidosis with CTS was assessed using multivariable adjusted Cox models accounting for age, sex, race and ethnicity, obesity, hypertension, diabetes, statin use, and smoking status. RESULTS: Of the 166,987 individuals included, the median age was 54 (38 to 66) years; 105,279 (63.0%) were female, and 92,780 (55.6%) were non-Hispanic White individuals; CTS was identified in 12,407 (7.4%) individuals. Compared with individuals without CTS, the adjusted hazard ratio for incident heart failure was 1.13 (95% CI, 1.02 to 1.26) in individuals with CTS. The risk of amyloidosis was ∼3-fold higher (adjusted hazard ratio, 2.86; 95% CI, 1.71 to 4.77) in individuals with CTS compared with those without CTS. Individuals carrying a pathogenic TTR variant had an approximately 40% higher risk (adjusted hazard ratio, 1.38; 95% CI, 1.16 to 1.65) for development of CTS compared with noncarriers. CONCLUSION: Cardiac amyloidosis screening programs may use CTS as a sentinel event and use genetic testing to identify individuals at a higher risk of TTR amyloidosis.