Long-term kidney outcomes in pediatric continuous-flow ventricular assist device patients

BACKGROUND

Continuous-flow ventricular assist devices (CF-VADs) are used increasingly in pediatric end-stage heart failure (ESHF) patients. Alongside common risk factors like oxidant injury from hemolysis, non-pulsatile flow constitutes a unique circulatory stress on kidneys. Post-implantation recovery after acute kidney injury (AKI) is commonly reported, but long-term kidney outcomes or factors implicated in the evolution of chronic kidney disease (CKD) with prolonged CF-VAD support are unknown.

METHODS

We studied ESHF patients supported > 90 days on CF-VAD from 2008 to 2018. The primary outcome was CKD (per Kidney Disease Improving Global Outcomes (KDIGO) criteria). Secondary outcomes included AKI incidence post-implantation and CKD evolution in the 6-12 months of CF-VAD support.

RESULTS

We enrolled 134 patients; 84/134 (63%) were male, median age was 13 [IQR 9.9, 15.9] years, 72/134 (54%) had preexisting CKD at implantation, and 85/134 (63%) had AKI. At 3 months, of the 91/134 (68%) still on a CF-VAD, 34/91 (37%) never had CKD, 13/91 (14%) developed de novo CKD, while CKD persisted or worsened in 49% (44/91). Etiology of heart failure, extracorporeal membrane oxygenation use, duration of CF-VAD, AKI history, and kidney replacement therapy were not associated with different CKD outcomes. Mortality was higher in those with AKI or preexisting CKD.

CONCLUSIONS

In the first multicenter study to focus on kidney outcomes for pediatric long-term CF-VAD patients, preimplantation CKD and peri-implantation AKI were common. Both de novo CKD and worsening CKD can happen on prolonged CF-VAD support. Proactive kidney function monitoring and targeted follow-up are important to optimize outcomes.

Globotriaosylsphingosine improves risk stratification of kidney progression in Fabry disease patients

BACKGROUND

Kidney damage is common in patients with Fabry disease (FD), but more accurate information about the risk of progression to kidney failure is needed for clinical decision-making. In particular, FD patients with mild renal involvement often lack timely intervention and treatment. We aimed to utilize a model to predict the risk of renal progression in FD patients.

METHODS

Between November 2011 and November 2019, ERT-naive patients with FD were recruited from three medical centers in China. To assess the risk of a 50% decline in the estimated glomerular filtration rate (eGFR) or end-stage kidney disease (ESKD), Cox proportional hazards models were utilized. The performance of these models was assessed using discrimination, calibration, and reclassification.

RESULTS

A total of 117 individuals were enrolled. The mean follow-up time was 4.8 years, during which 35 patients (29.9 %) progressed to the composite renal outcomes. Male sex, baseline proteinuria, eGFR and globotriaosylsphingosine (Lyso-Gb3) were found to be independent risk factors for kidney progression by the Cox model, based on which a combined model containing those clinical variables and Lyso-Gb3 and clinical models including only clinical indicators were constructed. The two prediction models had relatively good performance, with similar model fit measured by R2 (59.8 % vs. 61.1 %) and AIC (51.54 vs. 50.08) and a slight increase in the C statistic (0.949 vs. 0.951). Calibration curves indicated closer alignment between predicted and actual renal outcomes in the combined model. Furthermore, subgroup analysis revealed that Lyso-Gb3 significantly improved the predictive performance of the combined model for kidney prognosis in low-risk patients with a baseline eGFR over 60 ml/min/1.73 m2 or proteinuria levels less than 1 g/d when compared to the clinical model.

CONCLUSIONS

Lyso-Gb3 improves the prediction of kidney outcomes in FD patients with a low risk of progression, suggesting that these patients may benefit from early intervention to assist in clinical management. These findings need to be externally validated.

Sex differences in the association between urate metabolism and kidney outcomes in patients with chronic kidney disease

BACKGROUND

The association between serum uric acid (SUA) concentration and kidney outcomes in patients with chronic kidney disease (CKD) is controversial. Furthermore, there are no reports regarding the association of clearance of uric acid (CUA) with kidney outcomes. We aimed to determine whether SUA or CUA was associated with kidney outcomes in patients with CKD stratified by sex.

METHODS

The present prospective study was conducted in 815 patients (523 men and 292 women) with CKD. The participants were divided into quartiles (Q1-Q4) of SUA or CUA for each sex. Endpoints were defined as a composite of doubling of serum creatinine (SCr), end-stage kidney disease (ESKD), or death (outcome 1) and a composite of doubling of SCr or ESKD (outcome 2).

RESULTS

During a median follow-up of 2.5 years, outcomes 1 and 2 occurred in 363 and 321 patients, respectively. Multivariable-adjusted Cox analyses showed that in men, the hazard ratios (95% confidence intervals) for outcome 1 of Q1, Q2, and Q3 of CUA were 2.08 (1.18-3.70), 2.03 (1.22-3.39), and 1.85 (1.17-2.95), respectively, compared with Q4. Additionally, there were similar associations between lower CUA quartiles and outcome 2 in men. However, no associations between SUA and either outcome were observed in men. Conversely, in women, neither SUA nor CUA was associated with an outcome.

CONCLUSION

In CKD, lower CUA was independently associated with poor kidney outcomes only in men, and in both sexes, there was no association of SUA with kidney outcomes.

Effects of glucagon-like peptide-1 receptor agonists and sodium-glucose cotransporter-2 inhibitors on cardiovascular and kidney outcomes in Asian versus White patients with type 2 diabetes mellitus

BACKGROUND

The study aimed to assess the treatment effects of the two medications on cardiovascular and kidney outcomes in Asian compared with White patients with type 2 diabetes mellitus (T2DM).

METHODS

MEDLINE, EMBASE, and CENTRAL were searched up to October 31, 2022. We included the trials that assessed the effects of glucagon-like peptide-1 receptor agonists (GLP-1 RA) or sodium-glucose cotransporter-2 inhibitors (SGLT2i) versus placebo in Asian and White patients with T2DM on major adverse cardiovascular events (MACE) and kidney outcomes. The Bucher method was used to perform an indirect comparison for estimating the differences in treatment effects of GLP-1 RA and SGLT2i between Asian versus White patients. Interaction tests were also performed for treatment-by-race to assess the potential effect modification by race.

RESULTS

We included 22 publications from 13 randomized trials. For MACE, there were no differences in treatment effects of GLP-1 RA (HR = 0.84, 95% CI: 0.68-1.04) or SGLT2i (HR = 0.90, 95% CI: 0.72-1.13) in Asian versus White patients. No differences in treatment effects of SGLT2i on kidney outcomes in Asian versus White patients were found (HR = 1.01, 95% CI: 0.75-1.36). There was no significant effect modification by race on cardiovascular and kidney outcomes.

CONCLUSIONS

There were no significant differences in treatment effects of GLP-1 RA or SGLT2i for MACE between Asian and White patients with T2DM. Likewise, no significant differences in treatment effects of SGLT2i on kidney outcomes were found between Asian and White patients.

Environmental melamine exposure and adverse kidney outcomes in patients with type 2 diabetes mellitus

The impact of melamine exposure on kidney outcomes in type 2 diabetes mellitus (T2D) patients remains unclear. In this prospective cohort study, 561 T2D patients during October 2016 and June 2020 were enrolled and followed until December 2021. Baseline one-spot urinary corrected melamine levels were measured by LC-MS/MS. Average daily intake (ADI) of melamine represented environmental melamine exposure in daily life, and was estimated using urinary corrected melamine level by creatinine excretion (CE)-based model. Primary kidney outcomes were defined as doubling of serum creatinine levels or end stage kidney disease (ESKD), and secondary kidney outcomes included rapid decline in kidney function as estimated glomerular filtration rate (eGFR) decline >5 ml/min/1.73 m²/year. Baseline median urinary corrected melamine levels and estimated DI of melamine were 0.8 μg/mmol and 0.3 μg/kg/day in 561 T2D patients. During 3.7 years of follow-up, urinary corrected melamine level was positively correlated with reaching composite outcomes of either doubling of serum creation levels or ESKD and rapid decline in kidney function. Those with the highest quartile of urinary corrected melamine had 2.96-fold risk of composite outcomes of either doubling of serum creation levels or ESKD and 2.47-fold risk of eGFR decline >5 ml/min/1.73 m²/year. Estimated ADI of melamine also had significant correlation with adverse kidney outcomes. Furthermore, the positive relationship between melamine exposure and rapid decline in kidney function was only found in T2D patients with male, baseline eGFR ≥60 ml/min/1.73 m² or glycated hemoglobin ≤7%. In conclusion, melamine exposure is significantly associated with adverse kidney outcomes in T2D patients, especially in those with male, well sugar control or good baseline kidney function.

Efficacy of SGLT2 inhibitors in patients with heart failure: An overview of systematic reviews

AIMS

Sodium-glucose cotransporter-2 inhibitors (SGLT2i) have been shown to have benefit in patients with heart failure (HF). Multiple systematic reviews and meta-analyses (SRs and MAs) of randomized control trials (RCTs) comparing SGLT2i to placebo have been performed. However, there is uncertainty in the quality of the evidence and associated efficacy. We performed an overview of SRs and MAs of RCTs to summarize the evidence related to the efficacy of SGLT2i for the management of HF.

METHODS AND RESULTS

A comprehensive search of three databases (the Cochrane Library, EMBASE, and PubMed) was conducted until February 21, 2021. All SRs of RCTs evaluating the efficacy of SGLT2i in patients with HF were eligible for inclusion. The primary outcome was all-cause mortality. Methodological quality was evaluated using the AMSTAR-2 assessment tool. The overall quality of evidence was summarized using the Grading of Recommendations Assessment, Development, and Evaluation method. The initial search yielded 3431 references, of which, eight SRs and MAs met the inclusion criteria. The methodological quality ranged from critically low to high. The overall quality of evidence ranged from very low to moderate. Most of the SRs and MAs showed benefits in all-cause mortality, HF-related hospitalizations, and KCCQ score change.

CONCLUSIONS

SGLT2i are possibly beneficial in patients with HF, however, none of the SRs and MAs compared the efficacy between different types of SGLT2i. Furthermore, this paper emphasizes the need for consistent reproducible conduct and reporting of SRs to generate high-quality evidence and facilitate clinical decision-making.

Empagliflozin, irrespective of blood pressure, improves outcomes in heart failure with preserved ejection fraction: the EMPEROR-Preserved trial

AIMS

Empagliflozin reduces the risk of cardiovascular death or heart failure (HF) hospitalization in patients with HF and preserved ejection fraction. This study aims to evaluate if systolic blood pressure (SBP) moderates these effects.

METHODS AND RESULTS

The association of SBP and the treatment effects of empagliflozin in EMPEROR-Preserved (empagliflozin outcome trial in patients with chronic heart failure with preserved ejection fraction) was evaluated. Randomized patients (n 5988) were grouped according to SBP at baseline (110 mmHg, n 455; 110130 mmHg, n 2415; 130 mmHg, n 3118). The effect of empagliflozin on blood pressure, cardiovascular death or HF hospitalization (primary outcome), total HF hospitalizations, and rate of decline in estimated glomerular filtration rate was studied. Over a median of 26.2 months, the placebo-corrected decline was small and not significantly different across baseline SBP. On placebo, the risk of cardiovascular death or hospitalization for HF was 8.58 at 130 mmHg, 8.26 at 110130 mmHg, and 11.59 events per 100 patient-years at 110 mmHg (P 0.12 vs. 130 mmHg, P 0.08 vs. 110130 mmHg). There was no evidence for baseline SBP moderating the effect of empagliflozin on risk of HF events (primary endpoint interaction P 0.69, recurrent HF hospitalizations interaction P 0.55). When comparing empagliflozin with placebo, SBP did not meaningfully associate with adverse events such as hypotension, volume depletion, and acute renal failure.

CONCLUSION

In EMPEROR-Preserved, empagliflozin was effective and safe without SBP meaningfully moderating empagliflozins treatment effects. This analysis of EMPEROR-Preserved shows that empagliflozin can be used safely and effectively without blood pressure being a meaningful moderator of the drug benefit.

CLINICAL TRIAL REGISTRATION

URL: https://www.clinicaltrials.gov Unique identifier: NCT03057951.

Kidney outcomes associated with sodium-glucose cotransporter 2 inhibitors versus glucagon-like peptide 1 receptor agonists: A real-world population-based analysis

BACKGROUND

Kidney benefits have been demonstrated for both sodium-glucose cotransporter 2 inhibitors (SGLT2i) and glucagon-like peptide-1 receptor agonists (GLP1RA) compared with placebo in patients with type 2 diabetes. This study aimed to compare the impacts of SGLT2i and GLP1RA on the trend of estimated glomerular filtration rate (eGFR) and other kidney outcomes.

METHODS

Using a real-world population-based database, the Hong Kong Hospital Authority (HA) database, of patients with type 2 diabetes between January 2008 and December 2020, patients started on SGLT2i were compared with those started on GLP1RA, with one-to-one propensity-score matching. Primary outcome was a composite of sustained ≥50% eGFR decline, end-stage kidney disease (ESKD), incident macroalbuminuria and kidney-related mortality. Secondary outcome was the rate of eGFR decline.

FINDINGS

A total of 2551 SGLT2i and 2551 GLP1RA new users were analyzed. At baseline, mean age was 56·2 years, with mean eGFR 78·0 mL/min/1·73m² and 11·9% having macroalbuminuria. Upon median follow-up of 13 months (IQR: 5-27), SGLT2i users had a lower risk of composite kidney outcomes (HR=0·77, 95%CI 0·62-0·96, p = 0·02), mainly driven by a reduction in ESKD (HR=0·53, p = 0·01). SGLT2i users also tended to have a lower risk of incident macroalbuminuria (HR=0·74, p = 0·05). Subgroup analyses of the benefits of SGLT2i use on composite kidney outcomes did not reveal interaction by age, sex, baseline eGFR/albuminuria status, hemoglobin A1c (HbA1c) and renin-angiotensin-system inhibitor use. Furthermore, SGLT2i users had a slower eGFR decline than GLP1RA users (SGLT2i: -1·19 mL/min/1·73m²/year, GLP1RA: -1·95 mL/min/1·73m²/year, p < 0·01).

INTERPRETATION

Our results suggest that SGLT2i might be superior to GLP1RA in reducing kidney outcomes among patients with type 2 diabetes. Future trials are needed to corroborate our findings.

FUNDING

None.

Sodium glucose cotransporter-2 inhibitors protect the cardiorenal axis: Update on recent mechanistic insights related to kidney physiology

Sodium glucose cotransporter-2 (SGLT2) inhibitors have acquired a central role in the treatment of type 2 diabetes, chronic kidney disease including diabetic kidney disease, and heart failure with reduced ejection fraction. SGLT2 inhibitors lower glucose levels by inducing glycosuria. In addition, SGLT2 inhibitors improve cardiovascular outcomes (3-point MACE), end-stage kidney disease, hospitalization for heart failure, and cardiovascular mortality in people with and without diabetes. The mechanisms underlying these benefits have been extensively investigated, but remain poorly understood. In this review, we first summarize recent trial evidence and subsequently focus on (1) the mechanisms by which SGLT2 inhibitors improve kidney outcomes and (2) the potential role of the kidneys in mediating the cardioprotective effects of SGLT2 inhibitors.

Association of SGLT2 inhibitors with cardiovascular, kidney, and safety outcomes among patients with diabetic kidney disease: a meta-analysis

BACKGROUND

We conducted a systematic review and meta-analysis of the cardiovascular, kidney, and safety outcomes of sodium-glucose cotransporter 2 inhibitors (SGLT2i) among patients with diabetic kidney disease (DKD).

METHODS

We searched electronic databases for major randomized placebo-controlled clinical trials published up to September 30, 2021 and reporting on cardiovascular and kidney outcomes of SGLT2i in patients with DKD. DKD was defined as chronic kidney disease in individuals with type 2 diabetes. Random-effects meta-analysis models were used to estimate pooled hazard ratios (HR) and 95% confidence intervals (CI) for clinical outcomes including major adverse cardiovascular events (MACE: myocardial infarction [MI], stroke, and cardiovascular death), kidney composite outcomes (a combination of worsening kidney function, end-stage kidney disease, or death from renal or cardiovascular causes), hospitalizations for heart failure (HHF), deaths and safety events (mycotic infections, diabetic ketoacidosis [DKA], volume depletion, amputations, fractures, urinary tract infections [UTI], acute kidney injury [AKI], and hyperkalemia).

RESULTS

A total of 26,106 participants with DKD from 8 large-scale trials were included (median age: 65.2 years, 29.7-41.8% women, 53.2-93.2% White, median follow-up: 2.5 years). SGLT2i were associated with reduced risks of MACE (HR 0.83, 95% CI 0.75-0.93), kidney composite outcomes (HR 0.66, 95% CI 0.58-0.75), HHF (HR 0.62, 95% CI 0.55-0.71), cardiovascular death (HR 0.84, 95% CI 0.74-0.96), MI (HR 0.78, 95% CI 0.67-0.92), stroke (HR 0.76, 95% CI 0.59-0.97), and all-cause death (HR 0.86, 95% CI 0.77-0.96), with no significant heterogeneity detected. Similar results were observed among participants with reduced estimated glomerular filtration rate (eGFR: < 60 mL/min/1.73m²). The relative risks (95% CI) for adverse events were 3.89 (1.42-10.62) and 2.50 (1.32-4.72) for mycotic infections in men and women respectively, 3.54 (0.82-15.39) for DKA, and 1.29 (1.13-1.48) for volume depletion.

CONCLUSIONS

Among adults with DKD, SGLT2i were associated with reduced risks of MACE, kidney outcomes, HHF, and death. With a few exceptions of more clear safety signals, we found overall limited data on the associations between SGLT2i and safety outcomes. More research is needed on the safety profile of SGLT2i in this population.

Prevalence and Outcomes Associated with Hyperuricemia in Hospitalized Patients with COVID-19

INTRODUCTION

Coronavirus 2019 (COVID-19) can increase catabolism and result in hyperuricemia. Uric acid (UA) potentially causes kidney damage by alteration of renal autoregulation, inhibition of endothelial cell proliferation, cell apoptosis, activation of the pro-inflammatory cascade, and crystal deposition. Hyperuricemia in patients with COVID-19 may contribute to acute kidney injury (AKI) and poor outcomes.

METHODS

We included 834 patients with COVID-19 who were >18 years old and hospitalized for >24 h in the Mount Sinai Health System and had at least 1 measurement of serum UA. We examined the association between the first serum UA level and development of acute kidney injury (AKI, defined by KDIGO criteria), major adverse kidney events (MAKE, defined by a composite of all-cause in-hospital mortality or dialysis or 100% increase in serum creatinine from baseline), as well as markers of inflammation and cardiac injury.

RESULTS

Among the 834 patients, the median age was 66 years, 42% were women, and the median first serum UA was 5.9 mg/dL (interquartile range 4.5-8.8). Overall, 60% experienced AKI, 52% experienced MAKE, and 32% died during hospitalization. After adjusting for demographics, comorbidities, and laboratory values, a doubling in serum UA was associated with increased AKI (odds ratio [OR] 2.8, 95% confidence interval [CI] 1.9-4.1), MAKE (OR 2.5, 95% CI 1.7-3.5), and in-hospital mortality (OR 1.7, 95% CI 1.3-2.3). Higher serum UA levels were independently associated with a higher level of procalcitonin (β, 0.6; SE 0.2) and troponin I (β, 1.2; SE 0.2) but were not associated with serum ferritin, C-reactive protein, and interleukin-6.

CONCLUSION

In patients admitted to the hospital for COVID-19, higher serum UA levels were independently associated with AKI, MAKE, and in-hospital mortality in a dose-dependent manner. In addition, hyperuricemia was associated with higher procalcitonin and troponin I levels.

Sodium-glucose cotransporter 2 inhibitors benefit to kidney and cardiovascular outcomes for patients with type 2 diabetes mellitus and chronic kidney disease 3b-4: A systematic review and meta-analysis of randomized clinical trials

BACKGROUND

A systematic review and meta-analysis was performed to assess the kidney and cardiovascular (CV) outcomes of sodium-glucose cotransporter 2 (SGLT2) inhibitors in patients with type 2 diabetes mellitus (T2DM) and chronic kidney disease (CKD) stage 3b-4.

METHOD

We conducted a systematic review and meta-analysis of randomized, placebo-controlled trials (RCTs). Medline, Embase, and the Cochrane Central were searched for available trials up to Jan 18, 2021.

RESULTS

From identifying 1892 citations, we included nine studies into quantitative analyses with a total of 6521 participants. In the patients with T2DM and CKD stage 3b-4, SGLT2 inhibitors significantly decreased the risk of the primary kidney outcome (HR 0.65, 95% CI 0.55-0.76) and slowed the decline in eGFR slope with a difference between treatment and control of 0.46 ml/min/1.73 m2 per year (95% CI 0.37-0.55). SGLT2 inhibitors also reduced the risk of the major adverse cardiovascular events (MACE) (HR 0.75, 95% CI 0.60-0.93).

CONCLUSIONS

SGLT2 inhibitors can reduce the risk of kidney disease and MACE outcomes for patients with T2DM and CKD stage 3b-4, which may be the most beneficial effects observed in the included trials.

Sodium-Glucose Cotransporter 2 Inhibition: Rationale and Mechanisms for Kidney and Cardiovascular Protection in People With and Without Diabetes

Large-scale randomized trials have demonstrated the remarkable capacity of sodium-glucose cotransporter 2 inhibitors to reduce the risk of cardiovascular outcomes and kidney disease progression, irrespective of the presence or absence of type 2 diabetes mellitus. Although the results of these trials have transformed clinical practice guidelines, the mechanisms underpinning the wide-ranging benefits of this class of agents remain incompletely understood and subject to ongoing investigation. Improvements in cardiometabolic risk factors such as glucose, blood pressure, body weight, and albuminuria likely contribute. However, other direct effects on physiological and cellular function, such as restoration of tubuloglomerular feedback, improvements in kidney and cardiac oxygenation and energy efficiency, as well as restoration of normal autophagy are also likely to be important. This review summarizes the rationale and potential mechanisms for cardiorenal protection with sodium-glucose cotransporter 2 inhibitors in people with and without diabetes, their relative importance, and the experimental and clinical lines of evidence supporting these hypotheses.

More than tubular dysfunction: cystinosis and kidney outcomes

BACKGROUND

Cystinosis is a lysosomal storage disease that affects many tissues. Its prognosis depends predominantly on kidney involvement. Cystinosis has three clinical forms: nephropathic infantile, nephropathic juvenile and non-nephropathic adult. Proximal tubular dysfunction is prominent in the infantile form, whereas a combination of glomerular and tubular alterations are observed in the juvenile form.

METHODS

Thirty-six children with nephropathic cystinosis were included in the study. Clinical features, molecular genetic diagnoses, and kidney outcomes of the patients were evaluated.

RESULTS

Twenty-one children (58.3%) were male. The median age at diagnosis was 18.5 months. Twenty-eight patients (77.8%) had infantile nephropathic cystinosis, while eight (22.2%) had juvenile nephropathic cystinosis. An acute rapid deterioration of the kidney function with proteinuria, hypoalbuminemia, and nephrotic syndrome, was observed in 37.5% of patients with the juvenile form. The mean estimated glomerular filtration rate (eGFR) was 82.31 ± 37.45 ml/min/1.73m² at diagnosis and 63.10 ± 54.60 ml/min/1.73m² at the last visit (p = 0.01). Six patients (16.6%) had kidney replacement therapy (KRT) at the last visit. The median age of patients with kidney failure was 122 months. Patients with a spot urine protein/creatinine ratio < 6 mg/mg at the time of diagnosis had better kidney outcomes (p = 0.01). The most common allele was c.451A>G (32.6%). The patients with the most common mutation tended to have higher mean eGFR and lower leukocyte cystine levels than patients with other mutations.

CONCLUSION

Glomerulonephritis may be a frequent finding in addition to the well-known tubular dysfunction in patients with cystinosis. Furthermore, our results highlight that the presence of severe proteinuria at the time of diagnosis is a relevant prognostic factor for kidney survival.

Modification of the effects of intensive systolic blood pressure control on kidney outcomes by baseline body mass index

AIM

Obesity and intensive systolic blood pressure (SBP) control are independently associated with greater risk of acute kidney injury (AKI) and incident chronic kidney disease (CKD). We examined whether baseline body mass index (BMI) modifies the effects of intensive SBP lowering on AKI or incident CKD.

METHODS

The systolic blood pressure intervention trial (SPRINT) randomized 9361 participants with high blood pressure to an SBP target of either <120 mm Hg or < 140 mm Hg. In a secondary analysis of 9210 SPRINT participants with a baseline BMI of ≥18.5 and < 50 kg/m² , we examined the interactions of baseline BMI and SPRINT SBP intervention on subsequent AKI and incident CKD.

RESULTS

Each 5 kg/m² increase in baseline BMI was associated with higher risk of AKI (hazard ratio [HR] 1.12, 95% confidence interval [CI] 1.01 to 1.25) and incident CKD (HR 1.17, 95% CI 1.01 to 1.32). Intensive SBP control increased the risk of AKI (HR 1.68, 95% CI 1.22-2.11) and incident CKD (HR 3.49, 95% CI 2.47-4.94). The increased risk of AKI with intensive SBP control was consistent across the baseline BMI spectrum (linear interaction p = 0.55); however, the risk of incident CKD with SPRINT intervention increased with higher BMI (linear interaction p = 0.043).

CONCLUSION

The increased risk of adverse kidney events seen with intensive SBP control in the SPRINT persisted across the baseline BMI spectrum. A higher baseline BMI was associated with an augmented risk of incident CKD with intensive SBP control.