Efficacy and Safety of the Use of SGLT2 Inhibitors in Patients on Incremental Hemodialysis: Maximizing Residual Renal Function, Is There a Role for SGLT2 Inhibitors?

SGLT-2i are the new standard of care for diabetic kidney disease (DKD), but previous studies have not included patients on kidney replacement therapy (KRT). Due to their high risk of cardiovascular, renal complications, and mortality, these patients would benefit the most from this therapy. Residual kidney function (RKF) conveys a survival benefit and cardiovascular health among hemodialysis (HD) patients, especially those on incremental hemodialysis (iHD). We retrospectively describe the safety and efficacy of SGLT2i regarding RKF preservation in seven diabetic patients with different clinical backgrounds who underwent iHD (one or two sessions per week) during a 12-month follow-up. All patients preserved RKF, measured as residual kidney urea clearance (KrU) in 24 h after the introduction of SGLT2i. KrU levels improved significantly from 4.91 ± 1.14 mL/min to 7.28 ± 1.68 mL/min at 12 months (p = 0.028). Pre-hemodialysis blood pressure improved 9.95% in mean systolic blood pressure (SBP) (p = 0.015) and 10.95% in mean diastolic blood pressure (DBP) (p = 0.041); as a result, antihypertensive medication was modified. Improvements in blood uric acid, hemoglobin A1c, urine albumin/creatinine ratio (UACR), and 24 h proteinuria were also significant. Regarding side effects, two patients developed uncomplicated urinary tract infections that were resolved. No other complications were reported. The use of SGLT2i in our sample of DKD patients starting iHD on a 1-2 weekly regimen appears to be safe and effective in preserving RKF.

The impact of the correction of hyponatremia during hospital admission on the prognosis of SARS-CoV-2 infection.

Background: SARS-CoV-2 infection is frequently associated with hyponatremia (plasma sodium <135 mmol/L), being associated with a worse prognosis. The incidence of hyponatremia is estimated to be 20-37% according to the series, but there are no data on the prognosis after correction of hyponatremia. Therefore, our objectives were: to analyse the incidence and severity of hyponatremia at hospital admission, and to determine the association of this hyponatremia with the prognosis of COVID-19. Methods: Observational and retrospective cohort study. Patients who were admitted with a diagnosis of COVID-19 infection and hyponatremia, in the period March-May 2020, were included. We recorded epidemiological, demographic, clinical, biochemical, and radiological variables of SARS-CoV-2 infection and hyponatremia at the time of diagnosis and during hospitalization. The clinical follow-up ranged from admission to death or discharge. Results: 91 patients (21.8%) of the 414 admitted for SARS-CoV-2 infection presented hyponatremia (81.32% mild hyponatremia, 9.89% moderate and 8.79% severe). The absence of correction of hyponatremia 72-96 h after hospital admission was associated with higher mortality in patients with COVID-19 (Odds Ratio 0.165; 95% confidence interval: 0.018-0.686; p = 0.011). 19 patients (20.9%) died. An increase in mortality was observed in patients with severe hyponatremia compared with moderate and mild hyponatremia during hospital admission (37.5% versus 11.1% versus 8.1%, p = 0.041). Conclusion: We conclude that persistence of hyponatremia at 72-96 h of hospital admission was associated with higher mortality in patients with SARS-Cov-2.

Introduccion: La infección por SARS-CoV-2 se asocia con frecuencia con hiponatremia (sodio plasmático <135 mmol/l), relacionándose con peor pronóstico. La incidencia de la hiponatremia se estima en 20­37% según las series, pero no existen datos sobre el pronóstico tras la corrección de la hiponatremia. Por ello, nuestros objetivos fueron: analizar la incidencia y gravedad de la hiponatremia al ingreso hospitalario, y determinar la asociación de dicha hiponatremia con el pronóstico del COVID-19. Material y método: Estudio de cohorte observacional y retrospectivo. Se incluyeron pacientes que ingresaron con diagnóstico de infección por COVID-19 e hiponatremia, en el periodo marzo-mayo 2020. Registramos variables epidemiológicas, demográficas, clínicas, analíticas y radiológicas de la infección por SARS-CoV-2 e hiponatremia al momento del diagnóstico y durante la hospitalización. El seguimiento clínico comprendió desde el ingreso hasta el exitus o el alta. Resultados: 91 pacientes (21,8%) de los 414 ingresados por infección del SARS-CoV-2 presentaron hiponatremia (81,32% hiponatremia leve, 9,89% moderada y 8,79% grave). La ausencia de corrección de la hiponatremia a las 72­96 horas del ingreso hospitalario estuvo asociado a mayor mortalidad en los pacientes con COVID-19 (OR 0,165; 95% intervalo de confianza: 0,018­0,686; p = 0,011). Fallecieron 19 pacientes (20,9%). Se observó un aumento de la mortalidad en pacientes con hiponatremia grave en comparación con hiponatremia moderada y leve durante el ingreso (37,5% versus 11,1% versus 8,1%, respectivamente, p = 0,041). Conclusiones: La persistencia de la hiponatremia tras las primeras 72­96 horas del ingreso hospitalario fue asociada a mayor mortalidad+- en los pacientes con SARS-Cov-2.

Impacto de la corrección temprana de la hiponatremia en el pronóstico de la infección del síndrome respiratorio agudo grave del coronavirus 2 (SARS-CoV-2) / The impact of the correction of hyponatremia during hospital admission on the prognosis of SARS-CoV-2 infection

IntroducciónLa infección por el coronavirus del síndrome respiratorio agudo grave de tipo 2 (SARS-CoV-2) se asocia con frecuencia con hiponatremia (sodio plasmático<135mmol/l), relacionándose con peor pronóstico. La incidencia de la hiponatremia se estima en 20-37% según las series, pero no existen datos sobre el pronóstico tras la corrección de la hiponatremia. Por ello, nuestros objetivos fueron: analizar la incidencia y gravedad de la hiponatremia al ingreso hospitalario y determinar la asociación de dicha hiponatremia con el pronóstico de la enfermedad por coronavirus de 2019 (COVID-19).Material y métodoEstudio de cohorte observacional y retrospectivo. Se incluyeron pacientes que ingresaron con diagnóstico de infección por COVID-19 e hiponatremia en el periodo marzo-mayo de 2020. Registramos variables epidemiológicas, demográficas, clínicas, analíticas y radiológicas de la infección por SARS-CoV-2 e hiponatremia en el momento del diagnóstico y durante la hospitalización. El seguimiento clínico comprendió desde el ingreso hasta el exitus o el alta.ResultadosNoventa y un pacientes (21,8%) de los 414 ingresados por infección del SARS-CoV-2 presentaron hiponatremia (81,32% hiponatremia leve, 9,89% moderada y 8,79% grave). La ausencia de corrección de la hiponatremia a las 72-96horas del ingreso hospitalario estuvo asociado a mayor mortalidad en los pacientes con COVID-19 (odds ratio 0,165; 95% intervalo de confianza: 0,018-0,686; p=0,011). Fallecieron 19 pacientes (20,9%). Se observó un aumento de la mortalidad en pacientes con hiponatremia grave en comparación con hiponatremia moderada y leve durante el ingreso (37,5% versus 11,1% versus 8,1%, respectivamente; p=0,041).ConclusionesLa persistencia de la hiponatremia tras las primeras 72-96horas del ingreso hospitalario se asoció a mayor mortalidad en los pacientes con SARS-CoV-2. (AU)

IntroductionSARS-CoV-2 infection is frequently associated with hyponatremia (plasma sodium<135mmol/L), being associated with a worse prognosis. The incidence of hyponatremia is estimated to be 20–37% according to the series, but there are no data on the prognosis after correction of hyponatremia. Therefore, our objectives were: to analyze the incidence and severity of hyponatremia at hospital admission, and to determine the association of this hyponatremia with the prognosis of COVID-19.Material and methodObservational and retrospective cohort study. Patients who were admitted with a diagnosis of COVID-19 infection and hyponatremia, in the period March–May 2020, were included. We recorded epidemiological, demographic, clinical, biochemical, and radiological variables of SARS-CoV-2 infection and hyponatremia at the time of diagnosis and during hospitalization. The clinical follow-up ranged from admission to death or discharge.Results91 patients (21.8%) of the 414 admitted for SARS-CoV-2 infection presented hyponatremia (81.32% mild hyponatremia, 9.89% moderate and 8.79% severe). The absence of correction of hyponatremia 72–96h after hospital admission was associated with higher mortality in patients with COVID-19 (Odds Ratio .165; 95% confidence interval: .018-.686; P=.011). 19 patients (20.9%) died. An increase in mortality was observed in patients with severe hyponatremia compared with moderate and mild hyponatremia during hospital admission (37.5% versus 11.1% versus 8.1%, P=.041).ConclusionsWe conclude that persistence of hyponatremia at 72–96h of hospital admission was associated with higher mortality in patients with SARS-CoV-2. (AU)

The impact of the correction of hyponatremia during hospital admission on the prognosis of SARS-CoV-2 infection. / Impacto de la corrección temprana de la hiponatremia en el pronóstico de la infección del síndrome respiratorio agudo grave del coronavirus 2 (SARS-CoV-2).

INTRODUCTION: SARS-CoV-2 infection is frequently associated with hyponatremia (plasma sodium<135mmol/L), being associated with a worse prognosis. The incidence of hyponatremia is estimated to be 20-37% according to the series, but there are no data on the prognosis after correction of hyponatremia. Therefore, our objectives were: to analyze the incidence and severity of hyponatremia at hospital admission, and to determine the association of this hyponatremia with the prognosis of COVID-19. MATERIAL AND METHOD: Observational and retrospective cohort study. Patients who were admitted with a diagnosis of COVID-19 infection and hyponatremia, in the period March-May 2020, were included. We recorded epidemiological, demographic, clinical, biochemical, and radiological variables of SARS-CoV-2 infection and hyponatremia at the time of diagnosis and during hospitalization. The clinical follow-up ranged from admission to death or discharge. RESULTS: 91 patients (21.8%) of the 414 admitted for SARS-CoV-2 infection presented hyponatremia (81.32% mild hyponatremia, 9.89% moderate and 8.79% severe). The absence of correction of hyponatremia 72-96h after hospital admission was associated with higher mortality in patients with COVID-19 (Odds Ratio .165; 95% confidence interval: .018-.686; P=.011). 19 patients (20.9%) died. An increase in mortality was observed in patients with severe hyponatremia compared with moderate and mild hyponatremia during hospital admission (37.5% versus 11.1% versus 8.1%, P=.041). CONCLUSIONS: We conclude that persistence of hyponatremia at 72-96h of hospital admission was associated with higher mortality in patients with SARS-CoV-2.

Multiple brown tumors-Forgotten pathology in times of calcimimetics: A case report and literature review.

Multiple brown tumors represent a rare variant of osteitis fibrosa cystica. Brown tumors are associated with primary, secondary, or tertiary hyperparathyroidism. Brown tumors have been reported in patients with chronic kidney disease resulting in mineral and bone disorders. Chronic kidney disease resulting in mineral and bone disorder is a result of increased osteoclast activity and excessive production of parathormone due to parathyroid gland hyperactivity. Brown tumors are frequently overlooked in patients with end-stage renal disease since calcimimetics and vitamin D analogs were introduced as pharmacological therapy for secondary hyperparathyroidism. We present a case of a 79 year-old pre-dialysis woman, with multiple brown tumors secondary to a parathyroid adenoma despite being treated with cinacalcet for secondary hyperparathyroidism. In addition, we review the corresponding literature.

Targeting Cytokine Storm in COVID-19: A Role of Online Hemodiafiltration with Asymmetric Cellulose Triacetate in Maintenance Hemodialysis Patients-A Report of 10 Cases.

Early reports have suggested that maintenance hemodialysis (MHD) patients could be more susceptible to a severe course of COVID-19. Among the therapeutic approaches, the use of drugs that reduce the cytokine storm characteristic of this disease has been proposed. Some dialyzers, such as the new generation of asymmetric cellulose triacetate (ATA) membranes, could favor the effective elimination of medium-sized molecules and other inflammatory mediators. In this case series, we describe in depth the clinical, analytical, and radiological details, therapeutic aspects, and outcomes of the case series of 10 MHD patients of our dialysis unit, who tested positive for SARS-CoV-2 from 5 October to 30 November 2020. Furthermore, we evaluate the removal of hyperinflammatory parameters with the ATA membrane in postdilution online hemodiafiltration (OL-HDF) in these patients through a variety of biomarkers of systemic inflammation from the diagnosis until stripping. Biochemical blood analysis was carried out at baseline and at days 7 and 14 after diagnosis, respectively. 50% of the patients presented COVID-19 pneumonia and required hospital admission. Median hospitalization time was 21 days. A total of 4 patients developed severe pneumonia (3 of them died) and 1 patient developed moderate pneumonia. Patients who died (n = 3) were more likely to present bilateral pneumonia (100% vs 14.3%) at diagnosis and less reduction in interleukin 6 (IL-6) at day 14, as compared to those who survived. The use of the ATA membrane could be considered a therapeutic option, due to its immunomodulatory effect in MHD patients with SARS-CoV-2 infection, especially at the beginning of the disease, where the inflammatory component is predominant.

Monoclonal Gammopathy of Renal Significance with Deposits of Peculiar Morphology and Injuries of Secondary Thrombotic Microangiopathy: A Case Report and Review of the Literature.

We present the case of an 82-year-old woman diagnosed with monoclonal gammopathy of renal significance (MGRS) with the presence of different and peculiar kidney lesions, who began treatment with bortezomib and dexamethasone, presenting during her evolution a relapse. Although the bone marrow biopsy in this case showed plasma cells as pathologic clone and there was also a reduction after chemotherapeutic treatment, rituximab was proposed as a second line. We suspected that the relapse was possibly due to another precursor as B-cell or lymphoplasmacytic cell clone. We review the literature and suggest that the treatment for MGRS should be patient-tailored, preferably by consulting a multidisciplinary team. Future research is needed to better understand the disease course and establish the efficacy and safety of the therapeutic approach for the relapse of MGRS.