Publications by authors named "Srinivasan Beddhu"

Heart transplant (HTx) markedly improves survival and quality of life in patients with stage D heart failure. However, long-term survival post-HTx is limited by increased risk and progression of cardiovascular disease, chronic kidney disease, and metabolic disease. There is a lack of proven mitigating treatments for these morbidities, and transplant recipients are frequently excluded from clinical trials of novel agents, which could be of benefit in this population.

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Aims: To compare the risk of gastrointestinal adverse events in new users of glucagon-like peptide-1 receptor agonists (GLP-1RA), sodium-glucose cotransporter-2 inhibitors (SGLT2i) and insulin glargine.

Materials And Methods: We conducted an active comparator, new user design study in veterans with type 2 diabetes who initiated one of these drug classes between 1 January 2018 and 31 December 2021 (N = 141 080). Inverse probability weighted Cox regression models were used to relate drug class to outcomes of gastroparesis, intestinal obstruction, gallstones, acute cholecystitis, acute pancreatitis and all-cause death.

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Aims: To compare the risk of all-cause death and cardiovascular events in new users of insulin glargine, glucagon-like peptide-1 receptor agonists (GLP-1RA) and sodium-glucose cotransporter-2 inhibitors (SGLT2i), particularly in subgroups defined by baseline haemoglobin A1C (HbA1C), body mass index (BMI) and estimated glomerular filtration rate (eGFR).

Materials And Methods: We conducted an active comparator, new user design study in a national cohort of 161 405 veterans with type 2 diabetes (T2D) on metformin and initiated insulin glargine (n = 54 375), GLP-1RA (n = 22 145) or SGLT2i (n = 84 885) between 1 January 2018 and 31 December 2021. Patients were followed until 31 March 2023.

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Background: Sedentary behavior is highly prevalent and associated with morbidity and mortality in chronic kidney disease (CKD). A Sit Less, Interact and Move More (SLIMM) sedentary activity coaching intervention can reduce sedentary duration among persons with CKD, but preliminary data suggest that effects may not persist. Prior studies have suggested that moderate/vigorous intensity physical activities are not sustainable in persons with CKD.

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Key Points: There is concern that lowering systolic BP in persons with low diastolic BP could be harmful. In this meta-analysis of five large BP-lowering trials, BP interventions reduced the risks of cardiovascular events and all-cause mortality. However, there was no evidence that low baseline diastolic BP modified these beneficial effects of BP-lowering interventions.

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Article Synopsis
  • Hypertension is common in patients with chronic kidney disease (CKD) and significantly affects their health, which is why lowering blood pressure (BP) is essential.
  • A study using NHANES data showed that while awareness and the use of BP medications among CKD patients increased from 2011 to 2020, overall blood pressure control remained unsatisfactory.
  • Despite improvements in recognizing and treating hypertension, less than half of CKD patients achieved their recommended BP levels according to clinical guidelines.
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  • In the Systolic Blood Pressure Intervention Trial (SPRINT), long-term kidney failure rates were low, primarily linked to patients' initial kidney function.
  • Intensive blood pressure treatment resulted in higher but not statistically significant rates of dialysis or transplantation compared to standard treatment.
  • The study analyzed 9,279 participants over roughly 8.6 years, finding that most kidney failure cases occurred in patients with poor baseline kidney function, and intensive treatment did not notably raise the overall risk of kidney failure.
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The pathophysiology behind sodium retention in heart failure with preserved ejection fraction (HFpEF) remains poorly understood. We hypothesized that patients with HFpEF have impaired natriuresis and diuresis in response to volume expansion and diuretic challenge, which is associated with renal hypo-responsiveness to endogenous natriuretic peptides. Nine HFpEF patients and five controls received saline infusion (0.

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Background: In a post hoc analysis, we examined whether postrandomization diuretics use can explain and/or mediate the beneficial effects of intensive systolic BP lowering on cardiovascular disease and all-cause mortality in the Systolic Blood Pressure Intervention Trial (SPRINT).

Methods: SPRINT was a randomized, controlled trial of 9361 participants comparing the effects of intensive (systolic BP target <120 mm Hg) versus standard (systolic BP target <140 mm Hg) BP control on a primary composite cardiovascular end point in participants aged 50 years or older with systolic BP of 130-180 mm Hg. In time-varying multivariable Cox analyses, we assessed hazard ratios (HRs) of cardiovascular end points and all-cause mortality in participants on thiazide type, loop and/or potassium (K) sparing, or no diuretics.

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Background: Sedentary behaviors are associated with adverse health outcomes in older adults. The feasibility of behavioral interventions in this population is unclear.

Methods: In the Sit Less, Interact, Move More (SLIMM) trial of 106 participants who had obesity, those randomized to the SLIMM intervention ( = 54) were instructed to replace sedentary activities with stepping.

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Article Synopsis
  • Incident hyponatremia is linked to a higher risk of probable dementia but not to mild cognitive impairment or death.
  • The study analyzed data from the Systolic Blood Pressure Intervention Trial to explore the effects of low sodium levels on cognitive health in over 8,500 participants.
  • Factors such as older age, female sex, and lower body mass index increase the chance of developing incident hyponatremia, which impacts cognitive outcomes differently among patients.
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Objective: To investigate if in-clinic measures of physical function and real-world measures of physical behavior and mobility effort are associated with one another and to determine if they predict future hospitalization in participants with chronic kidney disease (CKD).

Methods: In this secondary analysis, novel real-world measures of physical behavior and mobility effort, including the best 6-minute step count (B6SC), were derived from passively collected data from a thigh worn actigraphy sensor and compared to traditional in-clinic measures of physical function (e.g.

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Background: Randomized trials are the gold standard for generating clinical practice evidence, but follow-up and outcome ascertainment are resource-intensive. Electronic health record (EHR) data from routine care can be a cost-effective means of follow-up, but concordance with trial-ascertained outcomes is less well-studied.

Methods: We linked EHR and trial data for participants of the Systolic Blood Pressure Intervention Trial (SPRINT), a randomized trial comparing intensive and standard blood pressure targets.

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Background: The cause for differences in serum creatinine between Black and non-Black individuals incorporated into prior GFR-estimating equations is not understood. We explored whether social determinants of health can account for this difference.

Methods: We conducted a secondary analysis of baseline data of the Modification of Diet in Renal Disease and Chronic Renal Insufficiency Cohort studies ( N =1628 and 1423, respectively).

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The National Kidney Foundation (NKF) and The Obesity Society (TOS) cosponsored a multispecialty international workshop in April 2021 to advance the understanding and management of obesity in adults with chronic kidney disease (CKD). The underlying rationale for the workshop was the accumulating evidence that obesity is a major contributor to CKD and adverse outcomes in individuals with CKD, and that effective treatment of obesity, including lifestyle intervention, weight loss medications, and metabolic surgery, can have beneficial effects. The attendees included a range of experts in the areas of kidney disease, obesity medicine, endocrinology, diabetes, bariatric/metabolic surgery, endoscopy, transplant surgery, and nutrition, as well as patients with obesity and CKD.

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The National Kidney Foundation (NKF) and The Obesity Society (TOS) cosponsored a multispecialty international workshop in April 2021 to advance the understanding and management of obesity in adults with chronic kidney disease (CKD). The underlying rationale for the workshop was the accumulating evidence that obesity is a major contributor to CKD and adverse outcomes in individuals with CKD, and that effective treatment of obesity, including lifestyle intervention, weight loss medications, and metabolic surgery, can have beneficial effects. The attendees included a range of experts in the areas of kidney disease, obesity medicine, endocrinology, diabetes, bariatric/metabolic surgery, endoscopy, transplant surgery, and nutrition, as well as patients with obesity and CKD.

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Background: Lowering of systolic blood pressure (SBP) in patients with low diastolic blood pressure (DBP), can further lower DBP. This can potentially decrease cerebral perfusion and cognition. We examined the influence of baseline DBP on the effect of lowering SBP on cognition.

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Background: Communication of the benefits and harms of blood pressure lowering strategy is crucial for shared decision-making.

Objectives: To quantify the effect of intensive versus standard systolic blood pressure lowering in terms of the number of event-free days DESIGN: Post hoc analysis of the Systolic Blood Pressure Intervention Trial PARTICIPANTS: A total of 9361 adults 50 years or older without diabetes or stroke who had a systolic blood pressure of 130-180 mmHg and elevated cardiovascular risk INTERVENTIONS: Intensive (systolic blood pressure goal <120 mmHg) versus standard blood pressure lowering (<140 mmHg) MAIN MEASURES: Days free of major adverse cardiovascular events (MACE), serious adverse events (SAE), and monitored adverse events (hypotension, syncope, bradycardia, electrolyte abnormalities, injurious falls, or acute kidney injury) over a median follow-up of 3.33 years KEY RESULTS: The intensive treatment group gained 14.

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