Kidney Disease Research Articles

Clinical impact of deep learning-derived intravascular ultrasound characteristics in patients with deferred coronary artery

Prognostic markers for long-term outcomes are lacking in patients with deferred (nonculprit) coronary artery lesions. This study aimed to identify the morphological criteria for predicting adverse outcomes and validate their clinical impact.Using deep learning models, we extracted geometrical parameters and maximal attenuation (or calcium) burden index (ABI-max or CBI-max) from the intravascular ultrasound (IVUS) images of nonculprit vessels in 1115 patients. The endpoints included cardiac death, myocardial infarction, and target vessel revascularization of nonculprit vessel.Cardiac death occurred in 27 (2.4 %) patients at 3 years and 39 (3.5 %) patients at 5 years. At 5 years, the cardiac death-free survival rate was significantly lower with ABP-max ≥11.37 % vs. < 11.37 % (90.0 % vs. 98.7 %), CBI-max ≥13.40 % vs. < 13.40 % (92.8 % vs. 98.4 %), and percent atheroma volume ≥ 51.35 % vs. < 51.35 % (94.0 % vs. 97.7) (all log-rank p < 0.001). The independent predictors of 5-year cardiovascular mortality were age (hazard ratio [HR] 1.21), female sex (HR 0.33), history of heart failure (HR 6.06), chronic kidney disease (HR 18.28), ABI-max (HR 1.04), and CBI-max (HR 1.05). The independent determinants of 5-year target vessel revascularization of nonculprit vessel were fractional flow reserve (HR 0.95 per 0.01 increase), minimal lumen area (HR 0.63), and plaque burden (HR 1.15).In patients with nonculprit coronary artery lesions, a large burden of attenuated or calcified plaques predicted cardiac mortality, while IVUS geometry was associated with repeat revascularization. Thus, deep learning–based IVUS analysis of the whole target vessel may help clinicians identify high-risk lesions.

The retinal blood flow density is related to the pathological severity of diabetic kidney disease.

This study aimed to investigate the correlation between fundus blood flow parameters and the severity of pathological biopsy in patients with diabetic kidney disease (DKD). Data of patients with type 2 diabetes mellitus who completed renal pathology biopsies and optical coherence tomography angiography (OCTA) examinations, including renal function, 24-h urine protein quantification, and macular flow imaging, were collected. DKD pathology biopsies were graded as stages 1-4, and differences and correlations of the parameters were compared between groups. The grading was transformed into early (stage 1) and late (stages 2-4), and regression analyses were conducted to develop a model, draw a nomogram, and test efficacy. This study included 157 eyes from 157 individuals in total. Urinary microalbumin and to urinary creatinine ratio (mALB/NCR) increased with pathological grading, whereas while glomerular filtration rate was decreased (p &lt; 0.01). Corresponding retinal blood flow in superficial, deep, and full paracentral rings was decreased, which correlated with pathological grading (p &lt; 0.01), with the highest blood flow density in the whole layer (r2 = -0.707). Meaningfully, in the early DKD model (area under the curve =0.929 (0.889-0.970), p &lt; 0.01), whole-layer blood flow density, mALB/NCR, and diabetes duration were statistically significant. The decrease in macular retinal blood flow density detected by OCTA is closely associated with the increase in pathological grading of DKD and can be used as a noninvasive parameter for monitoring early changes in DKD.

An infant case of autosomal recessive polycystic kidney disease-associated dilated cardiomyopathy-like hypertensive cardiomyopathy diagnosed because of urinary tract infection.

We report a case of dilated cardiomyopathy-like hypertensive cardiomyopathy (HTN-CM) with polycystic kidney disease without family history when a 3-month-old boy developed bacteraemia secondary to a urinary tract infection. He was later confirmed as having autosomal recessive inheritance due to the proven PKHD1 gene mutation. The treatment consisted mainly of antihypertensive and anti-heart failure therapies and he was discharged on the 131st day. To prevent the development of heart failure in patients with HTN-CM due to autosomal recessive polycystic kidney disease (ARPKD), it is important to improve the fetal diagnosis rate of ARPKD, detect hypertension early, and strictly control the blood pressure after birth.

The associations of cardiovascular and lifestyle factors with mortality from chronic kidney disease as the underlying cause: the JACC study

The associations of cardiovascular and lifestyle factors with mortality from chronic kidney disease as the underlying cause: the JACC study

Social and humanitarian issues in nephrology and hypertension.

Chronic kidney disease and hypertension, two widely prevalent conditions worldwide, present an urgent and pressing need for immediate action. The review describes how social conditions and humanitarian issues can influence hypertension and kidney disease. Undoubtedly, social determinants of health (SDoH) are key influencers in the development of many noncommunicable diseases, including hypertension and kidney disease. Healthcare professionals, including public health workers, play a crucial role in addressing these issues. Poverty, low education level, poor nutrition, housing, exposure to environmental hazards, and stress-related disorders are all factors that can be addressed, either directly or indirectly, through improved awareness and access to proper healthcare services. Besides personal factors, national, regional, or global factors cause serious apprehension. Disasters, whether natural or man-made, can lead to significant aftermaths on the healthy person and certainly on kidney disease and hypertensive patients. A Global Overview Report, 2023 turned out to be one of the most violent years since the end of the Cold War. In 2023, 59 state-based conflicts were recorded in 34 countries, the highest number registered since 1946. The wars in Ukraine and Gaza were the primary contributors with a significant impact on the kidney population, especially people living on dialysis and transplantation patients. They also yielded many refugees or displaced persons with ongoing suffering. It is crucial to recognize that social and humanitarian conditions can quickly exacerbate the health of vulnerable populations, particularly those with noncommunicable diseases like hypertension and chronic kidney disease. These patients, who often require continuous follow-up, especially those on dialysis, are particularly vulnerable during difficult times. Their lives depend on uninterrupted access to dialysis or transplantation medications, making the need for special attention and care more pressing. Further research and advocacy are needed to address these issues and ensure the health and well being of these populations.

Assessment of male creatinine levels and fecundity in couples planning pregnancy: a national cohort study in China.

Is there an association between male creatinine levels and time to pregnancy (TTP) in couples planning pregnancy? Low and high male creatinine concentrations were associated with reduced couple fecundity. Abundant evidence suggests male creatinine dysfunction is associated with infertility in males with kidney diseases. However, the association of preconception creatinine levels with reduced fecundity among general reproductive-aged couples lacks evidence from an in-depth population study. Based on the population-based cohort study from the National Free Preconception Check-up Projects, 4023204 couples were recruited and met the inclusion criteria from 1 January 2015 to 31 December 2017. They were planning pregnancy and were followed up every 3 months until achieving pregnancy as detected by gynaecological ultrasonography or were followed up for 1 year for the analysis of TTP. Cox regression models were used to estimate hazard ratios (HRs) and 95% CI for creatinine deciles. Restricted cubic spline regression was adopted for the dose-response relationship of creatinine with HRs. R statistical software was used for data analysis. Of the included participants, 2756538 (68.52%) couples successfully conceived. The median male serum creatinine was 81.50 μmol/l. Compared with the reference group (78.00-81.49 μmol/l) including the median creatinine, fecundity in the first (≤64.89 μmol/l), second (64.90-69.99 μmol/l), third (70.00-73.99 μmol/l), and tenth (≥101.00 μmol/l) deciles decreased by 8%, 5%, 2%, and 1%, respectively (Decile 1 Adjusted HR 0.92, 95% CI 0.91-0.92; Decile 2 Adjusted HR 0.95, 95% CI 0.95-0.96; Decile 3 Adjusted HR 0.98, 95% CI 0.97-0.99; Decile 10 Adjusted HR 0.99, 95% CI 0.98-0.99). An inverse-U-shaped association was consistently presented among males such that non-inferiority for fecundity was shown when creatinine was in the 81.66-104.90 μmol/l range (P for non-linearity < 0.001). For males over 40 years old, the risk of fecundity impairment was more obvious and the recommended range of creatinine levels for TTP was reduced and more narrow, compared with that for younger males. Not including the time couples spend preparing for pregnancy before enrolment would lead to an overestimation of fecundity; additionally some couples place pregnancy plans on hold due to special emergencies, which would not have been recognized. Due to the lack of information regarding semen quality, psychological factors, sexual intercourse frequencies, and hazardous environmental factors, we could not adjust for these factors. Some variates were self-reported and dichotomized, which were prone to bias. Direct variables reflecting muscle mass and impaired kidney function were lacking. Thus, extrapolation should be done with caution. Male creatinine is associated with couples' fecundity and the relationship varied by age. This study provides a better understanding of the potential implications and significance of different creatinine levels and their association with the clinical significance regarding couples' fecundity. This research has received funding from the National Natural Science Foundation of China (Grant No. 81872634), the Basic Research Funds of Central Public Welfare Research Institutes of China (Grant No. 2023GJZ03), the National Key Research and Development Program of China (Grant No. 2016YFC1000307), and the Project of National Research Institute for Family Planning (Grant No. 2018NRIFPJ03), People's Republic of China. The authors have no conflicts of interest to declare. N/A.

A national survey of current rehabilitation service provisions for people living with chronic kidney disease in the UK: implications for policy and practice

BackgroundNational guidance recognises the key role of rehabilitation in improving outcomes for people living with chronic kidney disease. Implementation of this guidance is reliant upon an adequate and skilled rehabilitation workforce. Data relating to this is currently lacking within the UK. This survey aimed to identify variations and good practices in kidney physiotherapy (PT), occupational therapy (OT) and clinical exercise physiologist (CEP) provision; and to understand barriers to implementation.MethodsAn online survey was sent to all 87 UK kidney units between June 2022 and January 2023. Data was collected on the provision of therapy services, barriers to service provision and responses to the COVID-19 pandemic. The quantitative survey was analysed using descriptive statistics. Free-text responses were explored using reflexive thematic analysis.ResultsForty-five units (52%) responded. Seventeen (38%) units reported having a PT and 15 (33%) an OT with a specialist kidney role; one unit (7%) had access to a CEP. Thirty units (67%) offered inpatient therapy services, ten (22%) outpatient therapy clinics, six (13%) intradialytic exercise, six (13%) symptom management and three (7%) outpatient rehabilitation. Qualitative data revealed lack of money/funding and time (both n = 35, 85% and n = 34, 83% respectively) were the main barriers to delivering kidney-specific therapy. Responders saw an increase in the complexity of their caseload, a reduction in staffing levels and consequently, service provision during the COVID-19 pandemic. Exemplars of innovative service delivery, including hybrid digital and remote services, were viewed as positive responses to the COVID-19 pandemic.ConclusionDespite clear evidence of the benefits of rehabilitation, across the UK, there remains limited and variable access to kidney-specific therapy services. Equitable access to kidney-specific rehabilitation services is urgently required to support people to ‘live well’ with kidney disease.

Blood pressure management strategies and podocyte health.

Hypertension (HTN) is one of the key global cardiovascular risk factors, which is tightly linked to kidney health and disease development. Podocytes, glomerular epithelial cells that play a pivotal role in maintenance of the renal filtration barrier, are significantly affected by increased glomerular capillary pressure in HTN. Damage or loss of these cells causes proteinuria, which marks the initiation of the HTN-driven renal damage. It goes without saying that effective BP management should not only mitigate cardiovascular risks but also preserve renal function by protecting podocyte integrity. This review offers a comprehensive examination of current blood pressure (BP) management strategies and their implications for podocyte structure and function and emphasizes strategies for the reduction of proteinuria in HTN. We explore primary and secondary antihypertensive agents, including ACE inhibitors, ARBs, calcium channel blockers, diuretics, as well as newer therapies (SGLT2 blocking and endothelin receptor antagonism), emphasizing their mechanistic roles in safeguarding podocytes and curtailing proteinuria.

The Role of Immunosuppression on Postoperative Outcomes in Facial Fracture Repair.

Objectives: To assess postoperative outcomes in immunosuppressed patients with facial fractures. Methods: TriNetX, a large de-identified health research database, was utilized to compare outcomes within 30 days of treatment between immunosuppressed and immunocompetent patients with facial fractures. Subgroup analysis was conducted based on use of immunosuppressive therapy, human immunodeficiency virus (HIV) status, diabetes, and chronic kidney disease (CKD). Results: Nine thousand four hundred seventy-five patients were identified. On subgroup analysis, 555 patients were on immunosuppressants, 429 patients had HIV, 619 patients had CKD, 1322 patients with liver disease, and 3133 had diabetes. Immunosuppressed patients more frequently experienced postoperative infections [odds ratio (OR) 1.37 (1.9-1.54), P < .001], thromboembolic events [OR 1.71 (1.33-2.20), P < .001], hemorrhage [OR 1.46 (1.10-1.92), P = .0087], hospital readmission [OR 1.36 (1.28-1.44), P < .001], subsequent emergency department encounters [OR 1.08 (1.01-1.15), P = .0249], and wound disruptions [OR 1.52 (1.17-1.97), P = .0017]. Analyses comparing outcomes by immunosuppression type found increased rates of infection [OR 1.59 (1.25-2.01), P < .001], thromboembolic events [OR 1.56 (1.07-2.26), P = .0196], wound disruption [OR 1.57 (1.03-2.39), P = .0357], and hospital readmission [OR 1.28 (1.16-1.42), P < .001] in diabetic patients. Patients with CKD [OR 1.7 (1-2.90), P = .0478] had higher rates of infection [OR 2.02 (1.18-3.46), P = .0092] and readmission [OR 1.43 (1.14-1.79), P = .0017]. Patients with liver disease had higher rates of infection [OR 1.54 (1.07-2.23), P = .0210], thromboembolic events [OR 2.84 (1.37-5.87), P = .0033], and readmission [OR 2.14 (1.83-2.51), P < .001]. No significant differences were seen between groups for HIV patients. Conclusions: Immunosuppressed patients with facial trauma have a higher prevalence of postoperative complications compared to immunocompetent patients. Diabetics had a higher prevalence of most complications while patients with CKD and liver disease had higher rates of infections. Surgeons may consider measures to decrease postoperative risk in these patients and to provide preoperative patient counseling.

The Worsening of Myocardial Ischemia-Reperfusion Injury in Uremic Cardiomyopathy is Further Aggravated by PM2.5 Exposure: Mitochondria Serve as the Central Focus of Pathology.

Uremic cardiomyopathy (UC) represents a complex syndrome characterized by different cardiac complications, including systolic and diastolic dysfunction, left ventricular hypertrophy, and diffuse fibrosis, potentially culminating in myocardial infarction (MI). Revascularization procedures are often necessary for MI management and can induce ischemia reperfusion injury (IR). Despite this clinical relevance, the role of fine particulate matter (PM2.5) in UC pathology and the underlying subcellular mechanisms governing this pathology remains poorly understood. Hence, we investigate the impact of PM2.5 exposure on UC susceptibility to IR injury. Using a rat model of adenine-induced chronic kidney disease (CKD), the animals were exposed to PM2.5 at 250µg/m3 for 3h daily over 21days. Subsequently, hearts were isolated and subjected to 30min of ischemia followed by 60min of reperfusion to induce IR injury. UC hearts exposed to PM2.5 followed by IR induction (Adenine + PM_IR) exhibited significantly impaired cardiac function and increased cardiac injury (increased infarct size and apoptosis). Analysis at the subcellular level revealed reduced mitochondrial copy number, impaired mitochondrial bioenergetics, decreased expression of PGC1-α (a key regulator of mitochondrial biogenesis), and compromised mitochondrial quality control mechanisms. Additionally, increased mitochondrial oxidative stress and perturbation of the PI3K/AKT/AMPK signaling axis were evident. Our findings therefore collectively indicate that UC myocardium when exposed to PM2.5 is more vulnerable to IR-induced injury, primarily due to severe mitochondrial impairment.

Glucagon receptor activation contributes to the development of kidney injury.

The underlying causes of diabetic kidney disease are still largely unknown. New insights into the contributing causes of diabetic nephropathy are important in order to prevent this complication. Hyperglycemia and hypertension are some of the risk factors for diabetic nephropathy. However, the incidence of diabetic nephropathy is increasing despite efforts to normalize blood-glucose levels and blood pressure. Therefore, other factors should be investigated as causes of diabetic nephropathy. We investigated whether long-term increased plasma levels of glucagon contribute to the development of pathophysiological changes in kidney function as seen in patients with diabetic nephropathy. Using mouse models of chronic activation and inactivation of glucagon receptor signaling, we investigated whether glucagon is involved in changes in renal function, renal structural and transcriptional changes. We found several histopathological changes in the kidney, such as thickening of the parietal layer of Bowman's capsule, glomerular mesangial cell expansion, and significant albuminuria in the mice with activated glucagon receptor signaling. Opposite effects on mesangial area expansion and the development of albuminuria were demonstrated in mice with glucagon receptor inactivation. RNA sequencing data revealed that transcription of genes related to fatty acid metabolism, podocytes, Na+/K+-ATPase, and sodium/glucose transport were significantly changed in mice with activated glucagon receptor signaling. These data implicate that the glucagon receptor signaling is involved in the development of kidney injury, as seen in type 2 diabetes and that glucagon receptor is a potential therapeutic target in the treatment of diabetes.

Pesticide Levels and Other Etiopathogenetic Factors in Patients with Chronic Kidney Disease of Unknown Cause in Central India – A Case–Control Study

Pesticide Levels and Other Etiopathogenetic Factors in Patients with Chronic Kidney Disease of Unknown Cause in Central India – A Case–Control Study

Renal Mast Cell-Specific Proteases in the Pathogenesis of Tubulointerstitial Fibrosis.

Chronic kidney disease is detected in 8-15% of the world's population. Along with fibrotic changes, it can lead to a complete loss of organ function. Therefore, a better understanding of the onset of the pathological process is required. To address this issue, we examined the interaction between mast cells (MCs) and cells in fibrous and intact regions, focusing on the role of MC proteases such as tryptase, chymase, and carboxypeptidase A3 (CPA3). MCs appear to be involved in the development of inflammatory and fibrotic changes through the targeted secretion of tryptase, chymase, and CPA3 to the vascular endothelium, nephron epithelium, interstitial cells, and components of intercellular substances. Protease-based phenotyping of renal MCs showed that tryptase-positive MCs were the most common phenotype at all anatomic sites. The infiltration of MC in different anatomic sites of the kidney with an associated release of protease content was accompanied by a loss of contact between the epithelium and the basement membrane, indicating the active participation of MCs in the formation and development of fibrogenic niches in the kidney. These findings may contribute to the development of novel strategies for the treatment of tubulointerstitial fibrosis.

Pregnancy occurring in AA amyloidosis: a series of27 patients including 3 new French cases.

AA amyloidosis (AAA) is a multisystem disease related to the deposition in tissues of serum amyloid A protein which complicates chronic inflammation. It is a potentially fatal complication. Renal involvement is the most common manifestation of AAA. Pregnancy in women with chronic kidney disease is considered to be at risk for specific pregnancy complications and the worsening of their underlying renal dysfunction. Our aim was to report pregnancy in our AAA patients and discuss the outcome through a literature review. French cases were identified through the Reference Center for Auto-Inflammatory Diseases and Amyloidosis and a systematic literature review was performed. Three new patients were identified: twowith Familial Mediterranean fever (FMF) and one with cryopyrin-associated periodic syndrome; one wasunder anakinra therapy and one had receiveda kidneytransplantation before her pregnancy. Onepatient was diagnosed with AAA following the detection of post-partum nephrotic syndrome. Among the 27 patients from literature and our case, FMF was the maincause of AAA (69%). Eight of the patients were diagnosed with AAA during their pregnancy or in immediate post-partum and gestational complications appeared in 23/25 cases, mostly intrauterine growth retardation (n=10), prematurity (n=11) and preeclampsia (n=4).No bleeding complication was reported. Pregnancy can occur in patients (eight overall)with AAA and the diagnosis is frequently made during pregnancy. Pregnant women with AAA are at risk for adverse pregnancy-associated outcomes and require special and closer monitoring.

Angiopoietin-like 4 is a potential biomarker for diabetic kidney disease in type 2 diabetes patients.

The association between serum angiopoietin-like 4 (ANGPTL4) levels and the severity of diabetic kidney disease (DKD) in patients with type 2 diabetes mellitus remains unclear. A total of 1,115 type 2 diabetes mellitus patients were analyzed in this cross-sectional study. DKD index included DKD stages defined by estimated glomerular filtration rate, the albuminuria grades and DKD risk management grades. Serum levels of ANGPTL4 and other biomarkers were detected. Multivariable-adjusted linear and logistic analyses were used to study the association between ANGPTL4 and DKD. The protein levels of ANGPTL4 were assessed in the kidney. Renal tubular cells were stimulated with glucose to study ANGPTL4 expression. Compared with the participants in the third or fourth quantile of ANGPTL4, those in the first or second quantile of ANGPTL4 were younger, with lower glycated hemoglobin, triglycerides and urinary albumin creatinine ratio (all P < 0.05). There was a negative nonlinear relationship between ANGPTL4 and estimated glomerular filtration rate in type 2 diabetes mellitus patients. One standard deviation increased serum ANGPTL4 levels, the odds ratio of having DKD was 1.40 (95% confidence interval 1.08-1.80). The mediation analysis showed that triglycerides did not mediate the association between ANGPTL4 and DKD. Furthermore, ANGPTL4 could be the strongest among multiple panels of biomarkers in its association of DKD. Compared with mice at 8 weeks-of-age, db/db mice at 18 weeks-of-age had increased ANGPTL4 expression in glomeruli and tubular segments. In vitro, glucose could stimulate ANGPTL4 expression in tubular cells in a dose-dependent manner. ANGPTL4 could be a potential marker and therapeutic target for DKD treatment.

Cardiovascular autonomic neuropathy and the risk of diabetic kidney disease

Cardiovascular autonomic neuropathy and the risk of diabetic kidney disease

Increased kidney stone risk following total pancreatectomy with islet autotransplantation

Background/objectivesChronic pancreatitis (CP) is associated with increased risk of calcium-oxalate kidney stones, likely due to enteric hyperoxaluria. However, the risk of kidney stones for patients with CP after total pancreatectomy with islet autotransplantation (TPIAT) is unknown. We aimed to evaluate kidney stone risk in patients with CP after TPIAT. MethodsA retrospective analysis of 629 patients who underwent TPIAT was conducted to identify patients who developed kidney stones post-TPIAT. Kaplan-Meier analysis estimated time to first event. An Anderson-Gill proportional-hazards analysis of all kidney stone events described key clinical associations. ResultsMean age at TPIAT was 33 years (SD 15.3, range 3–69); 69.8 % (n = 439) were female. The estimated chance of any kidney stone episodes by 5 years post-TPIAT was 12.8 % (95 % CI: 8.8–16.6 %); by 10 years, 23.2 % (CI: 17.5–28.6 %); by 15 years, 29.4 % (CI: 21.8–36.2 %). Significant associations with kidney stones post-TPIAT included older age (HR 1.25 per 10 years), smoking history (HR 1.72), mild chronic kidney disease (HR 1.96), renal cysts (HR 3.67), pre-TPIAT kidney stones (HR 4.06), family history of kidney stones (HR 4.10), and Roux-en-Y reconstruction (HR 2.68). Of the 77 patients who developed kidney stones, 34 (44.1 %) had recurrent episodes. Of 143 total kidney stone events, 35 (24.5 %) required stone removal, 79 (55.2 %) resolved spontaneously, and 29 (20.3 %) were missing this data. ConclusionsPatients with CP post-TPIAT commonly have kidney stones: nearly 3 in 10 have ≥1 kidney stone episodes within 15 years. Clinicians should be aware of this risk and counsel patients on prevention.

Usefulness and caveats of real-world data for research on hypertension and its association with cardiovascular or renal disease in Japan.

The role of real-world data, collected from clinical practice rather than clinical trials, has become increasingly important for investigating real-life situations, such as treatment effects. In Japan, evidence on hypertension, cardiovascular diseases, and kidney diseases using real-world data is increasing. These studies are mainly based on "the insurer-based real-world data" collected as electronic records, including data from health check-ups and medical claims such as JMDC database, DeSC database, the Japan Health Insurance Association (JHIA) database, or National Databases of Health Insurance Claims and Specific Health Checkups (NDB). Based on the insurer-based real-world data, traditional but finely stratified associations between hypertension and cardiovascular or kidney diseases can be explored. The insurer-based real-world data are also useful for pharmacoepidemiological studies that capture the distribution and trends of drug prescriptions; combined with annual health check-up data, the effectiveness of drugs can also be examined. Despite the usefulness of insurer-based real-world data collected as electronic records from a wide range of populations, we must be cautious about several points, including issues regarding population uncertainty, the validity of cardiovascular outcomes, the accuracy of blood pressure, traceability, and biases, such as indication and immortal biases. While a large sample size is considered a strength of real-world data, we must keep in mind that it does not overcome the problem of systematic error. This review discusses the usefulness and pitfalls of insurer-based real-world data in Japan through recent examples of Japanese research on hypertension and its association with cardiovascular or kidney disease.

Characteristics and Outcomes of Children and Young Adults With Sepsis Requiring Continuous Renal Replacement Therapy: A Comparative Analysis From the Worldwide Exploration of Renal Replacement Outcomes Collaborative in Kidney Disease (WE-ROCK).

Pediatric sepsis-associated acute kidney injury (AKI) often requires continuous renal replacement therapy (CRRT), but limited data exist regarding patient characteristics and outcomes. We aimed to describe these features, including the impact of possible dialytrauma (i.e., vasoactive requirement, negative fluid balance) on outcomes, and contrast them to nonseptic patients in an international cohort of children and young adults receiving CRRT. A secondary analysis of Worldwide Exploration of Renal Replacement Outcomes Collaborative in Kidney Disease (WE-ROCK), an international, multicenter, retrospective study. Neonatal, cardiac and PICUs at 34 centers in nine countries from January 1, 2015, to December 31, 2021. Patients 0-25 years old requiring CRRT for AKI and/or fluid overload. None. Among 1016 patients, 446 (44%) had sepsis at CRRT initiation and 650 (64%) experienced Major Adverse Kidney Events at 90 days (MAKE-90) (defined as a composite of death, renal replacement therapy [RRT] dependence, or > 25% decline in estimated glomerular filtration rate from baseline at 90 d from CRRT initiation). Septic patients were less likely to liberate from CRRT by 28 days (30% vs. 38%; p < 0.001) and had higher rates of MAKE-90 (70% vs. 61%; p = 0.002) and higher mortality (47% vs. 31%; p < 0.001) than nonseptic patients; however, septic survivors were less likely to be RRT dependent at 90 days (10% vs. 18%; p = 0.011). On multivariable regression, pre-CRRT vasoactive requirement, time to negative fluid balance, and median daily fluid balance over the first week of CRRT were not associated with MAKE-90; however, increasing duration of vasoactive requirement was independently associated with increased odds of MAKE-90 (adjusted OR [aOR], 1.16; 95% CI, 1.05-1.28) and mortality (aOR, 1.20; 95% CI, 1.1-1.32) for each additional day of support. Septic children requiring CRRT have different clinical characteristics and outcomes compared with those without sepsis, including higher rates of mortality and MAKE-90. Increasing duration of vasoactive support during the first week of CRRT, a surrogate of potential dialytrauma, appears to be associated with these outcomes.

Impact of the Diverting Stoma on Renal Function.

Although loop ileostomy as a diverting stoma has been considered to affect renal dysfunction, few reports have compared loop colostomy with loop ileostomy regarding renal function. This is an important issue in the current setting of increased opportunities to perform surgery on patients with poor renal function. This study aims to reveal the effect of ileostomy on renal dysfunction compared to colostomy following sphincter-preserving rectal surgery. This study was a retrospective analysis. We compared preoperative and postoperative blood urea nitrogen, serum creatinine and estimated glomerular filtration rate values. The study was conducted at a single academic institution in Osaka, Japan. From October 2013 to November 2021, 135 consecutive patients underwent rectal surgery with diverting stoma are included. Differences in pre- and postoperative renal function values by stoma creation site in patients with preoperative chronic kidney disease. Risk factors for patients with newly kidney disease after stoma creation. In the preoperative chronic kidney disease (+) patients, the differences between the pre- and post-values in the blood urea nitrogen (p = 0.047) and the serum creatinine (P = 0.028) values were higher than in the preoperative chronic kidney disease (-) patients. In the preoperative chronic kidney disease (+) patients, ileostomy was significantly associated with an elevation of the serum creatinine value (p = 0.025) and a decrease in estimated glomerular filtration rate value (p = 0.041) from the pre-operative one compared with that of colostomy. In multivariate analysis, ileostomy (odds ratio; 7.443, p = 0.011) and hypertension (4.226, p = 0.008) were independent risk factors of newly kidney disease postoperatively. Limitations to our study includes its retrospective nature and bias due to the stoma site being determined by each surgeon. We should take care to choose diverting stoma especially in patients with a risk of kidney disfunction. See Video Abstract.