A Long-Term Study to Evaluate the Ability of Tenapanor Alone or in Combination With Sevelamer to Treat to Goal Serum Phosphorus in Patients With End-Stage Kidney Disease on Dialysis

Background: The newly introduced device Mobil-O-Graph (IEM, Stolberg, Germany) combines brachial cuff oscillometry and pulse wave analysis, enabling the determination of pulse wave velocity (PWV) via complex mathematic algorithms during 24-h ambulatory blood pressure monitoring (ABPM). However, the determinants of oscillometric PWV in the end-stage kidney disease (ESKD) population remain poorly understood. Methods: In this study, 81 ESKD patients undergoing long-term peritoneal dialysis underwent 24-h ABPM with the Mobil-O-Graph device. The association of 24-h oscillometric PWV with several demographic, clinical and haemodynamic parameters was explored using linear regression analysis. Results: In univariate analysis, among 21 risk factors, 24-h PWV exhibited a positive relationship with age, body mass index, overhydration assessed via bioimpedance spectroscopy, diabetic status, history of dyslipidaemia and coronary heart disease, and it had a negative relationship with female sex and 24-h heart rate. In stepwise multivariate analysis, age ( β: 0.883), 24-h systolic blood pressure (BP) ( β: 0.217) and 24-h heart rate ( β: −0.083) were the only three factors that remained as independent determinants of 24-h PWV (adjusted R 2 = 0.929). These associations were not modified when all 21 risk factors were analysed conjointly or when the model included only variables shown to be significant in univariate comparisons. Conclusion: The present study shows that age together with simultaneously assessed oscillometric BP and heart rate are the major determinants of Mobil-O-Graph-derived PWV, explaining >90% of the total variation of this marker. This age dependence of oscillometric PWV limits the validity of this marker to detect the premature vascular ageing, a unique characteristic of vascular remodelling in ESKD.

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The Association Between Age of Onset of Type 2 Diabetes with Long-term Risk of End Stage Kidney Disease: A National Registry Study

10.2337/figshare.12273110.v1 ◽

2020 ◽

Author(s):

Jedidiah I Morton ◽

Danny Liew ◽

Stephen P McDonald ◽

Jonathan E Shaw ◽

Dianna J Magliano

Keyword(s):

Type 2 Diabetes ◽

Kidney Disease ◽

Cumulative Incidence ◽

Age Of Onset ◽

End Stage Kidney Disease ◽

Onset Of Diabetes ◽

End Stage ◽

Effect Of Age

Objective: The long-term risk of end-stage kidney disease (ESKD) in type 2 diabetes is poorly described, as is the effect that younger age of diabetes onset has on this risk. Therefore, we aimed to estimate the effect of age of onset on the cumulative incidence of ESKD from onset of type 2 diabetes. Research Design and Methods: This study included 1,113,201 people with type 2 diabetes registered on the Australian National Diabetes Services Scheme (NDSS) followed from 2002 until 2013. The NDSS was linked to the Australia and New Zealand Dialysis and Transplant Registry and the Australian National Death Index. Results: Between 2002 and 2013, there were 7,592 incident cases of ESKD during 7,839,075 person-years of follow up. In the first 10-15 years following onset of diabetes, the incidence of ESKD was highest in those with an older age of onset of diabetes, whereas over longer durations of diabetes the incidence of ESKD became higher in those with younger-onset diabetes. After 40 years of diabetes, the cumulative incidence of ESKD was 11.8% and 9.3% in those diagnosed with diabetes aged 10-29 and 30-39 years, respectively. When death from ESKD without renal replacement therapy was included, incidence of ESKD remained higher in older onset diabetes for the initial 20 years, with no clear effect of age thereafter. Conclusions: The long-term risk of ESKD in type 2 diabetes is high, which disproportionately affects those with younger-onset of diabetes as they are more likely to survive to longer diabetes durations.

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