Search

Hypertension is the leading modifiable cause of premature death and hence one of the global targets of World Health Organization for prevention. Hypertension also affects the great majority of patients with chronic kidney disease (CKD). Both hypertension and CKD are intrinsically related, as hypertension is a strong determinant of worse renal and cardiovascular outcomes and renal function decline aggravates hypertension. This bidirectional relationship is well documented by the high prevalence of hypertension across CKD stages and the dual benefits of effective antihypertensive treatments on renal and cardiovascular risk reduction. Achieving an optimal blood pressure (BP) target is mandatory and requires several pharmacological and lifestyle measures. However, it also requires a correct diagnosis based on reliable BP measurements (eg, 24-hour ambulatory BP monitoring, home BP), especially for populations like patients with CKD where reduced or reverse dipping patterns or masked and resistant hypertension are frequent and associated with a poor cardiovascular and renal prognosis. Even after achieving BP targets, which remain debated in CKD, the residual cardiovascular risk remains high. Current antihypertensive options have been enriched with novel agents that enable to lower the existing renal and cardiovascular risks, such as SGLT2 (sodium-glucose cotransporter-2) inhibitors and novel nonsteroidal mineralocorticoid receptor antagonists. Although their beneficial effects may be driven mostly from actions beyond BP control, recent evidence underline potential improvements on abnormal 24-hour BP phenotypes such as nondipping. Other promising novelties are still to come for the management of hypertension in CKD. In the present review, we shall discuss the existing evidence of hypertension as a cardiovascular risk factor in CKD, the importance of identifying hypertension phenotypes among patients with CKD, and the traditional and novel aspects of the management of hypertensives with CKD.

Even though it has been more than a decade since renal denervation (RDN) was first used to treat hypertension and an intense effort on researching this therapy has been made, it is still not clear how RDN fits into the antihypertensive arsenal. There is no question that RDN lowers blood pressure (BP), it does so to an extent at best corresponding to one antihypertensive drug. The procedure has an excellent safety record. However, it remains clinically impossible to predict whose BP responds to RDN and whose does not. Long-term efficacy data on BP reduction are still unconvincing despite the recent results in the SPYRAL HTN-ON MED trial; experimental studies indicate that reinnervation is occurring after RDN. Although BP is an acceptable surrogate endpoint, there is complete lack of outcome data with RDN. Clear indications for RDN are lacking although patients with resistant hypertension, those with documented increase in activity of the sympathetic system and perhaps those who desire to take fewest medication may be considered. ispartof: JOURNAL OF HYPERTENSION vol:40 issue:10 pages:1859-1875 ispartof: location:Netherlands status: published

Gout and hyperuricaemia are two clinical situations associated with an elevated risk of developing cardiovascular (heart failure, myocardial infarction, stroke) and metabolic and renal complications. One reason is probably related to the fact that the prevalence of hyperuricaemia and gout is high in clinical situations, which themselves involve a high cardiovascular risk, such as hypertension, diabetes, chronic kidney disease or obesity. However, recent studies suggest that hyperuricaemia may promote cardiovascular complications independently of other cardiovascular risk factors, by inducing chronic inflammation, oxidative stress, and endothelial dysfunction. The questions that arise today concern primarily the treatment of asymptomatic hyperuricaemia. Should it be treated to decrease the patients' cardiovascular risk and if so, starting from which level and towards which target? There are now several pieces of evidence indicating that this might be useful, but data from large studies are not unanimous. This review will discuss this issue as well as new well-tolerated treatments, such as febuxostat or SGLT2 inhibitors, which lower uric acid levels, prevent gout and lower the risk of cardio-renal events.

Diabetic kidney disease (DKD) is a major public health problem and its incidence is rising. The disease course is unpredictable with classic biomarkers, and the search for new tools to predict adverse renal outcomes is ongoing. Renal magnetic resonance imaging (MRI) now enables the quantification of metabolic and microscopic properties of the kidneys such as single-kidney, cortical and medullary blood flow, and renal tissue oxygenation and fibrosis, without the use of contrast media. A rapidly increasing number of studies show that these techniques can identify early kidney damage in patients with DKD, and possibly predict renal outcome. This review provides an overview of the currently most frequently used techniques, a summary of the results of some recent studies, and our view on their potential applications, as well as the hurdles to be overcome for the integration of these techniques into the clinical care of patients with DKD.

May Measurement Month (MMM) is an international screening campaign for arterial hypertension (HT) organised by the International Society of Hypertension and the World Hypertension League. It aims at raising the awareness of elevated blood pressure (BP) in the population. The goal of this analysis was to assess the results obtained in Swiss pharmacies during a 3-year campaign.Swiss data from the MMM17 to MMM19 campaigns were extracted from the global MMM database. The analysis was conducted specifically on measures taken in pharmacies. BP and a questionnaire including demographical and clinical information were recorded for each participant. To assess BP control, ESH 2018 thresholds of140/90 mmHg and ESH 2021 pharmacy-thresholds of135/85 mmHg were used.From an initial sample of 3634 Swiss participants included during this 3-year campaign, 2567 participants (73.2%women and 26.8% men,HT screening campaigns in pharmacies recruits mainly women. It helps the detection of untreated hypertensive participants and uncontrolled treated participants. Our data suggest that the average BP should be calculated on the second and third measurements due to a significant first measure effect in pharmacies measurement. SummaryHigh blood pressure (BP) is a major global public health issue as the leading risk factor of global death.World-wide initiatives like May Measurement Month (MMM) aim to screen thousands of people each year to raise awareness of hypertension (HT).Switzerland participated in MMM 2017-2019 and screened more than 2500 participants in pharmacies.When adopting the recent proposed thresholds of HT diagnosis in pharmacies (ESH 2021 135/85 mmHg), HT prevalence in Switzerland is high (38.3%) with only 2/3 of treated hypertensive achieving the BP goals.Women are more likely to participate in such campaigns taking place in pharmacies.A first measurement effect (FME) was also present in pharmacies, highlighting that taking three BP measurements in pharmacies and discarding the first should be also considered in the pharmacy setting.Involving a routine pharmacy-based health care of patients would help to identify more hypertensive patients and uncontrolled treated patients, who may not have had access to BP measurement.

Growing evidence demonstrates the suitability of renal denervation in a broad population of patients; however, questions remain over its suitability and practical implementation. Given the rapidity of emerging data, this has been a challenging field for potential adopters to navigate. The purpose of this article is twofold: to provide navigation through emerging clinical data and evolving guidance; and to provide physicians with practical, evidence-based advice for identifying eligible patients and providing appropriate management in the pre- and postintervention settings. Although many of these recommendations are based on existing published guidance documents, we reflect equally on our own experiences of using this technology.

Pain is a common symptom in patients on chronic hemodialysis (HD) but the prevalence of opioid prescriptions in this population has been poorly studied outside the United States. This study assesses the prevalence of opioid prescription in two Swiss dialysis centers. Prescriptions and clinical characteristics were retrospectively retrieved from the medical records of patients on HD for at least six months, treated at Lausanne University Hospital (academic center, AC), and the private center Clinique Cecil (PC) for the study. A total of 117 patients were included; 29.1% received at least one opioid prescription during the study period. Significantly more patients received an opioid prescription in the AC (39.1%) than in the PC (14.6%, p = 0.004). Univariate logistic regression analysis showed that center (Odds Ratio (OR) 3.76; Confidence Interval (CI) 1.48–9.6; p = 0.006), neuropathic pain (OR 2.99; CI 1.28–6.98; p = 0.011), benzodiazepine prescription (OR 2.72; CI 1.14–6.46; p = 0.024), polyneuropathy (OR 2.71; CI 1.14–6.46; p = 0.024) and amputation (OR 4.23; CI 1.1–16.1; p = 0.034) were associated with opioid prescription. The center was the only independent predictive factor in the multivariate analysis. Our results show that opioids are regularly prescribed to Swiss dialysis patients, although important differences exist between centers. The latter finding might suggest that opioid prescribing is more related to the prescriber than to the patient’s condition, but larger-scale studies are necessary to confirm this.

Hypertension remains the leading cause of global mortality, with elevated systolic blood pressure (BP) leading to 10.8 million deaths each year. Despite this, only around 50% of individuals with hypertension are aware of their condition. Alongside low awareness rates, lack of patient adherence to medication and therapeutic inertia have been identified as factors contributing to the lack of hypertension control worldwide. This report summarizes presentations from the “one of a kind” Servier-sponsored symposium, Improving the Management of Hypertension: Acting on Key Factors, which was conducted as part of the European Society of Hypertension (ESH)-International Society of Hypertension (ISH) 2021 ON-AIR meeting. The symposium focused on how low awareness, therapeutic inertia, and nonadherence can be addressed by combining the experience of a patient with the expertise of physicians. May Measurement Month, the ongoing global BP measurement program, is raising awareness of hypertension in over 90 countries, and the 2018 European Society of Cardiology/ESH guidelines and the 2020 ISH guidelines now include recommendations that specifically address low adherence and therapeutic inertia, including involving patients in a shared decision-making process and the use of single-pill combination therapy. Understanding the role of emotion in decision making and addressing the different psychological states and attitudes in the patient’s “cycle of change” are key to effective shared decision making and improving adherence. Supplementary Information The online version contains supplementary material available at 10.1007/s40256-021-00505-6., Plain Language Summary Raised blood pressure (hypertension) is involved in the death of around 10.8 million people throughout the world each year. However, only about half of the people with hypertension are aware of their condition. In addition, many patients who are prescribed blood pressure-lowering medications do not take their pills regularly (intentional or nonintentional low adherence). Many doctors are not as strict as they should be in ensuring blood pressure control of their hypertensive patients (therapeutic inertia). This report presents ideas and data from a “first of its kind” symposium sponsored by Servier as part of the European Society of Hypertension (ESH)-International Society of Hypertension (ISH) 2021 ON-AIR meeting involving both patient and physicians. The report summarizes the ways in which low awareness, therapeutic inertia, and lack of adherence can be addressed and includes insights into patients’ perspectives. An ongoing global blood pressure screening program called May Measurement Month was discussed, which has detected almost a million people with untreated or inadequately treated hypertension worldwide since 2017. Recent ESH and ISH guidelines for managing hypertension now include recommendations on how to address low adherence and therapeutic inertia. Crucially, doctors should involve their patients with hypertension in decisions about their own treatment, which will help improve adherence to medication and ultimately reduce hypertension-related serious adverse events (e.g. heart attacks, strokes and deaths). Supplementary Information The online version contains supplementary material available at 10.1007/s40256-021-00505-6.

Renal denervation (RDN) may be a new treatment modality for patients with hypertension. Initially, efforts to test the efficacy of RDN in lowering blood pressure (BP) have focussed on patients with...

Obesity is a clear risk factor for hypertension. Blood pressure (BP) measurement in obese patients may be biased by cuff size and upper arm shape which may affect the accuracy of measurements. This study aimed to assess the accuracy of the OptiBP smartphone application for three different body mass index (BMI) categories (normal, overweight and obese).Participants with a wide range of BP and BMI were recruited at Lausanne University Hospital's hypertension clinic in Switzerland. OptiBP estimated BP by recording an optical signal reflecting light from the participants' fingertips into a smartphone camera. Age, sex and BP distribution were collected to fulfil the AAMI/ESH/ISO universal standards. Both auscultatory BP references and OptiBP BP were measured and compared using the simultaneous opposite arms method, as described in the 81060-2:2018 ISO norm. Subgroup analyses were performed for each BMI category.We analyzed 414 recordings from 95 patients: 34 were overweight and 15 were obese. The OptiBP application had a performance acceptance rate of 82%. The mean and standard deviation (SD) differences between the optical BP estimations and the auscultatory reference rates (criterion 1) were respected in all subgroups: SBP mean value was 2.08 (SD 7.58); 1.32 (6.44); -2.29 (5.62) respectively in obese, overweight and normal weight subgroup. For criterion 2, which investigates the precision errors on an individual level, the threshold for systolic BP in the obese group was slightly above the requirement for this criterion.This study demonstrated that the OptiBP application is easily applicable to overweight and obese participants. Differences between the reference measure and the OptiBP estimation were within ISO limits (criterion 1). In obese participants, the SD of mean error was outside criterion 2 limits. Whether auscultatory measurement, due to arm morphology or the OptiBP is associated with increasing bias in obese still needs to be studied.What is the context? • Hypertension and obesity have a major impact on population health and costs. • Obesity is a chronic disease characterized by abnormal or excessive fat accumulation. • Obesity, in combination with other diseases like hypertension, is a major risk factor for cardiovascular and total death. • In Europe, the obesity rate is 21.5% for men and 24.5% for women. • Hypertension, which continues to increase in the population, is a factor that can be modified when well managed. • Blood pressure measurement by the usual method may be complicated in obese patients due to fat accumulation and the shape of the arm and can lead to measurement errors. In addition, the non-invasive blood pressure measurement can be constraining and uncomfortable.What is new? • Smartphone apps are gradually appearing and allow the measurement of blood pressure without a pressure cuff using photoplethysmography. • OptiBP is a smartphone application that provides an estimate of blood pressure that has been evaluated in the general population. • The objective of this study is to assess whether OptiBP is equally effective in obese and overweight patients.What is the impact? • The use of smartphones to estimate BP in overweight and obese patients may be a solution to the known bias associated with cuff measurement. • The acquisition of more and more data with a larger number of patients will allow the continuous improvement of the application’s algorithm.

May Measurement Month (MMM) is an international screening campaign for arterial hypertension initiated by the International Society of Hypertension and endorsed by the World Hypertension League. Its aim is to raise the awareness of elevated blood pressure (BP) in the population worldwide. The goal of the present analyses is to assess the results obtained during three years of this campaign in Switzerland. Swiss data from MMM17 to MMM19 campaigns were used. BP and a questionnaire for basic demographic and clinical information were recorded for each participant. BP measurements and definition of arterial hypertension followed the standard MMM protocol. To assess BP control, European Society of Hypertension 2018 thresholds of

The present paper provides an update of previous recommendations on Home Blood Pressure Monitoring from the European Society of Hypertension (ESH) Working Group on Blood Pressure Monitoring and Cardiovascular Variability sequentially published in years 2000, 2008 and 2010. This update has taken into account new evidence in this field, including a recent statement by the American Heart association, as well as technological developments, which have occurred over the past 20 years. The present document has been developed by the same ESH Working Group with inputs from an international team of experts, and has been endorsed by the ESH. ispartof: JOURNAL OF HYPERTENSION vol:39 issue:9 pages:1742-1767 ispartof: location:Netherlands status: published

Patients with chronic kidney disease on maintenance hemodialysis (HD) have a very high risk of death in the course of COVID-19. The aim of the study was to assess the effectiveness of COVID-19 vaccination to reduce the incidence of COVID-19 and the fatality rate in HD patients. A retrospective registry-based cohort study was performed in all HD adult patients in the Pomeranian Voivodeship. Vaccinations were carried out from January to April 2021 with mRNA vaccines, either BNT162b2 or mRNA-1273 with two-dose schedule. In the first analysis (2nd pandemic wave), 1,160 unvaccinated patients were included (59.7% males, 25.7% diabetic). In the second analysis (4th pandemic wave), 1,131 (59.4% male, 30.7% diabetic) individuals were included, 1,042 (92.13%) were fully vaccinated. Three hundred and fifteen HD patients (27.2%) were COVID-19 positive during the 2nd wave, and 6.9% (78/1,131) during the 4th wave. Within the fully vaccinated patients of the 4th wave, 60 were COVID-19 positive, 5.8 vs. 20.2% of unvaccinated COVID-19 positive patients in 2nd wave, respectively. COVID-19 incidence rate ratio (IRR) was 0.21 (4th wave-vaccinated vs. 2nd wave-unvaccinated) indicating a 79% reduction. The IRR between vaccinated and unvaccinated patients of the 4th wave was 0.28 in favor of vaccinated patients with 72% reduction. In the 2nd wave, 93 patients died as a result of COVID-19 (fatality rate: 29.5%). The fatality rate of fully vaccinated patients during the 4th wave was 6.7% (p = 0.004), while the fatality rate in the 4th wave within unvaccinated patients accounted for 11.1%. Significant clinical effectiveness of COVID-19 vaccination was demonstrated in a multicenter study in HD patients.

Background Few studies show that ambulatory blood pressure (BP) monitoring (ABPM) is superior to office BP (oBP) measurements to predict target organ damage and cardiovascular (CV) events in kidney transplant recipients (KTRs). We performed a systematic review aimed at determining the potential associations between BP recordings by different methods and renal and CV outcomes in this population. Methods Major medical databases were searched for studies enrolling adult KTRs undergoing 24-h ABPM compared with office or home BP measurements. The main outcomes were associations between different BP recordings and renal and CV outcomes. Additionally, any association between the circadian BP pattern (dipping/non-dipping status) and outcomes was assessed. Results Twenty-two studies (2078 participants) were reviewed. Among 12 studies collecting data on renal endpoints, 10 studies found that BP assessed by ABPM was a stronger predictor of renal function decline, assessed by serum creatinine and/or creatinine clearance or estimated glomerular filtration rate, than traditional office measurements. Twelve studies analysed the relation between different BP recordings and CV target organ damage and reported robust correlations between echocardiographic abnormalities (i.e. left ventricular mass index) and 24-h ABPM, but not with office BPs. Furthermore, 24-h ABPM correlated better than oBP with markers of vascular damage, such as carotid intima-media thickness, diffuse thickening and endothelial dysfunction. Additionally, an abnormal circadian BP pattern (non-dippers and reverse dippers) identified a group of kidney recipients at risk for kidney function loss and CV abnormalities. Conclusions In our systematic review, ABPM reflected target organ damage more closely than oBP in KTRs. Furthermore, an altered circadian BP profile associated with renal and CV target organ damage.

International audience; No abstract available

Introduction Supplementation of water-soluble vitamins is a common practice in hemodialysis patients, but dosages are largely based on conventional hemodialysis techniques. The aim of this study was to assess the status of water-soluble vitamins in patients on hemodiafiltration (HDF), and attempt to determine optimal dose of vitamin supplements. Methods This monocentric study included 40 patients on thrice-weekly chronic HDF. At baseline, all patients received 2 tablets of Dialvit containing B and C vitamins after each dialysis session. Predialysis samples of B and C vitamins were measured in both blood (n = 40) and a subgroup of dialysate (n = 6) samples. A second blood sample was obtained in 24 patients 3 months after dose adjustment of the vitamin supplement. Results At baseline, B-vitamin levels were high with, respectively, 0.4%, 10.0%, and 89.6% of patients in the low, normal, and high reference range. For vitamin C, most patients were in the normal range (5.0%, 82.5%, and 12.5% in low, normal, and high reference range). Three months after dose reduction, B vitamin levels decreased but stayed mostly at or above the normal range (1.4%, 25.7%, 72.9% in low, normal, and high reference range). Three patients (12.5%) developed vitamin C deficiency on low-dose substititon. Conclusion This study shows that the levels of most vitamins are above the normal range in patients on HDF receiving a classic dose of vitamin supplements, vitamin C excepted. Our study suggests that the classic dose of postdialysis vitamin B supplements may be reduced.

Introduction: The measurement of renal functional reserve (RFR) can unmask glomerular hyperfiltration in residual nephrons, but its determination is time-consuming. In this study, we assessed whether contrast-enhanced ultrasound (CEUS) is a valuable alternative to the gold standard inulin clearance and whether L-arginine or protein shakes lead to similar changes in glomerular filtration rate (GFR) as animal proteins in men and women. Methods: Changes in GFR and renal microperfusion were studied in 25 healthy subjects (8 men, 17 women) by simultaneously performing inulin clearance and CEUS (perfusion index, PI) before and 1 and 2 h after different protein loads (L-arginine, protein shake or meat). The Doppler parameters – renal resistive index (RRI) and pulsatility index (PuI) – were also measured. Results: None of the oral protein loads induced significant changes in CEUS-assessed PI. Only meat increased inulin clearance (from 111.2 ± 16.0 to 149.8 ± 27.2 mL/min, p < 0.05) and mobilized RFR, while L-arginine decreased GFR (106.7 ± 45.3 to 86.3 ± 42.6 mL/min, p < 0.05). Protein shakes had a neutral effect. There were no correlations between changes in inulin clearance and PI. At Doppler, RRI and PuI increased after meat intake (from 0.647 ± 0.029 to 0.694 ± 0.050 a.u., p < 0.05 and from 1.130 ± 0.087 to 1.318 ± 0.163 a.u., p < 0.05, respectively), but their changes also did not correlate with changes in inulin clearance. Results were similar in both sexes. Conclusions: CEUS is not a valuable alternative for inulin clearance to measure RFR. Meat ingestion leads to modest changes in renal Doppler parameters and to glomerular hyperfiltration in both women and men, while protein shakes and L-arginine do not.

Fluid overload has been associated with a high prevalence of sleep apnea (SA) in patients with end-stage kidney disease (ESKD). In this prospective study, we hypothesized that improvement in kidney function and hydration status after kidney transplantation (Tx) may result in an improvement in SA severity. A total of 196 patients on the kidney Tx waiting list were screened for SA using home nocturnal polysomnography (PSG) to measure the apnea-hypopnea index (AHI) and underwent bioimpedance to assess body composition. Of 88 participants (44.9%) with SA (AHI ≥ 15/h), 42 were reassessed 6 months post-Tx and were compared with 27 control patients. There was a significant, but small, post-Tx improvement in AHI (from 44.2 ± 24.3 to 34.7 ± 20.9/h, P = .02) that significantly correlated with a reduction in fluid overload (from 1.8 ± 2.0 to 1.2 ± 1.2 L, P = .02) and body water (from 54.9% to 51.6%, P = .003). A post-Tx increase in body fat mass (from 26% to 30%, P = .003) possibly blunted the beneficial impact of kidney Tx on SA. All parameters remained unchanged in the control group. In conclusion, SA is a frequent condition in ESKD patients and partially improved by kidney Tx. We suggest that SA should be systematically assessed before and after kidney Tx. ClinicalTrials.gov Identifier: NCT02020642.

OBJECTIVE There is increasing evidence that sodium can be stored in the skin and muscles without being osmotically active, yet whether acute changes in dietary sodium intake alter sweat and muscle sodium content has not been investigated previously. METHODS In a cross-over design, we assessed muscle sodium content by Na-MRI in 38 healthy normotensive volunteers (aged 33.5 ± 11.1 years, 76.3% women) after 5 days of high-sodium diet (6 g of salt added to their normal diet) and 5 days of a low-sodium diet. In a subgroup of 18 participants (72.2% women) we conducted quantitative pilocarpine iontophoretic sweat collections and measured the sodium concentration in sweat. Plasma aldosterone and plasma renin activity levels were measured in all participants. RESULTS Under high-sodium diet conditions urinary sodium excretion, muscle sodium content and sweat sodium concentration all increased significantly. Muscle sodium content (rm = 0.47, P = 0.03) and sodium sweat concentration (rm = 0.72, P

The regulation of salt and water balance is one the most important and complex physiological processes enabling to maintain homeostasis of the extracellular and intracellular volumes in health as well as in disease conditions. This regulatory process is mediated by multiple factors influencing both the intake of sodium and water and their excretion, essentially by the kidney. In recent years, new mechanisms of regulation of sodium and water balance have been described demonstrating tissue accumulation in the skin and muscles. This has changed substantially the usual concepts of how sodium and water are handled involving not only new storage compartments but also new regulatory pathways such as the immune system and inflammation. There is now evidence that these new mechanisms play also an important role also in patients with chronic kidney disease (CKD) or kidney failure as it will be discussed in this chapter. In patients with kidney diseases, a reduction in sodium intake and an adequate water intake are always two major components of the nutritional management. Indeed, on a lower sodium diet, blood pressure and proteinuria decrease and there is weak evidence suggesting that renal disease progression may be delayed. Today, most recommendations propose a sodium intake between 2 and 2.3 g Na/day (5–6 g NaCl) in CKD patients. Daily oral fluid intake should be between 1500 and 2000 mL/day in most CKD patients, except those on dialysis who should drink less and those with specific renal diseases such kidney stone diseases and polycystic kidney disease, who need to have a very high urine output.

Context α-klotho is an integral membrane protein that serves as a coreceptor for fibroblast growth factor 23 (FGF23) in conjunction with cognate fibroblast growth factor receptors. Proteolytic cleavage sheds the ectodomain of α-klotho (soluble α-klotho) as an endocrine substance into blood, urine, and cerebrospinal fluid. Objective To study the relationship of soluble α-klotho to mineral metabolism in the general population with mainly preserved kidney function. Design Cross-sectional analysis of the associations between soluble α-klotho with laboratory markers of markers of mineral metabolism in a population-based cohort. Setting Three centers in Switzerland including 1128 participants. Measures Soluble full-length α-klotho levels by a specific immunoassay and markers of mineral metabolism. Results The median serum level of soluble α-klotho was 15.0 pmol/L. Multivariable analyses using α-klotho as the outcome variable revealed a sex-by-PTH interaction: In men, PTH was positively associated with α-klotho levels, whereas this association was negative in women. Plasma phosphate associated with soluble α-klotho levels in an age-dependent manner, changing from a positive association in young adults gradually to a negative association in the elderly. The decline of 1,25 (OH)2 vitamin D3 levels in parallel to the gradual impairment of kidney function was greatly attenuated in the setting of high circulating soluble α-klotho levels. Conclusions Soluble α-klotho level is associated with plasma phosphate in an age-dependent manner and with PTH in a sex-dependent manner. Furthermore, our data reveal soluble α-klotho as a modulator of 1,25 (OH)2 vitamin D3 levels in individuals with preserved renal function.

With chronic kidney disease (CKD) being a global arising health problem, strategies for delaying kidney disease progression and reducing the high cardiovascular risk inherent to CKD, are the main objectives of the actual management of patients with kidney diseases. In these patients, the control of arterial hypertension is essential, as high blood pressure (BP) is a strong determinant of worst cardiovascular and renal outcomes. Achieving target blood pressures recommended by international guidelines is mandatory and often demands a multiple levels management, including several pharmacological and lifestyle measures. Even in the presence of adequate BP control, the residual cardiovascular risk remains high. In this respect, the recent demonstration that novel agents such as sodium glucose transporter 2 (SGLT2) inhibitors or the new non-steroidal mineralocorticoid antagonist finerenone can retard the progression of kidney diseases and reduce cardiovascular mortality on top of standard of care treatment with renin-angiotensin system inhibitors represent enormous progresses. These studies also demonstrate that cardiovascular and renal protection can be obtained beyond blood pressure control. Other promising novelties are still to come such as renal denervation and endothelin receptor antagonists in the setting of diabetic and non-diabetic kidney diseases. In the present review, we shall discuss the classic and the new aspects for the management of hypertension in CKD, integrating the new data from recent clinical studies.

Background: Lipoprotein(a) [Lp(a)] is an LDL-like molecule that is likely causal for cardiovascular events and Lp(a) variability has been shown to be mostly of genetic origin. Exogenous hormones (hormone replacement therapy) seem to influence Lp(a) levels, but the impact of endogenous hormone levels on Lp(a) is still unknown. The aim of the study was to assess the effect of endogenous steroid hormone metabolites on Lp(a). Methods: Lipoprotein(a) levels were measured in 1,021 participants from the Swiss Kidney Project on Genes in Hypertension, a family-based, multicentre, population-based prospective cohort study. Endogenous levels of 28 steroid hormone precursors were measured in 24-h urine collections from 883 individuals. Of the participants with Lp(a) data, 1,011 participants had also genotypes available. Results: The participants had an average age of 51 years and 53% were female. Median Lp(a) levels were 62 mg/L, and the 90thpercentile was 616 mg/L. The prevalence of a Lp(a) elevation ≥700 mg/L was 3.2%. Forty-three per cent of Lp(a) variability was explained respectively by: age (2%, p-16). Of the 28 endogenous steroid hormones assessed, androstenetriol, androsterone, 16α-OH-DHEA and estriol were nominatively associated with serum Lp(a) levels in univariable analyses and explained 0.4%-1% of Lp(a) variability, but none of them reached significance in multivariable models. Conclusions: In this contemporary population-based study, the prevalence of a Lp(a) elevation ≥700 mg/L was 3.2%. The effect of endogenous steroid hormone levels of Lp(a) variability was small at best, suggesting a negligible impact on the wide range of Lp(a) variability.

From the beginning of the pandemic hypertension appeared as one of the most common comorbidities in patients hospitalised with a Covid-19 infection. Hypertension, diabetes, overweight, chronic pulm...

In this issue of Blood Pressure, the lead authors of the 2020 International Society of Hypertension (ISH) Guidelines comment [1] on our recent editorial [2] regarding their first choice of antihype...

The first non-invasive measurements of arterial blood pressure (BP) became possible in the middle of the nineteenth century when Vierodt had the idea to quantify arterial BP by measuring the pressu...

Background Hypertension (HTN) is common following renal transplantation and it is associated with adverse effects on cardiovascular (CV) and graft health. Ambulatory blood pressure monitoring (ABPM) is the preferred method to characterize blood pressure (BP) status, since HTN misclassification by office BP (OBP) is quite common in this population. We performed a systematic review and meta-analysis aimed at determining the clinical utility of 24-h ABPM and its potential implications for the management of HTN in this population. Methods Ovid-MEDLINE and PubMed databases were searched for interventional or observational studies enrolling adult kidney transplant recipients (KTRs) undergoing 24-h ABP readings compared with OBP or home BP. The main outcome was the proportion of KTRs diagnosed with HTN by ABPM, home or OBP recordings. Additionally, day–night BP variability and dipper/non-dipper status were assessed. Results Forty-two eligible studies (4115 participants) were reviewed. A cumulative analysis including 27 studies (3481 participants) revealed a prevalence of uncontrolled HTN detected by ABPM of 56% [95% confidence interval (CI) 46–65%]. The pooled prevalence of uncontrolled HTN according to OBP was 47% (95% CI 36–58%) in 25 studies (3261 participants). Very few studies reported on home BP recordings. The average concordance rate between OBP and ABPM measurements in classifying patients as controlled or uncontrolled hypertensive was 66% (95% CI 59–73%). ABPM revealed HTN phenotypes among KTRs. Two pooled analyses of 11 and 10 studies, respectively, revealed an average prevalence of 26% (95% CI 19–33%) for masked HTN (MHT) and 10% (95% CI 6–17%) for white-coat HTN (WCH). The proportion of non-dippers was variable across the 28 studies that analysed dipping status, with an average prevalence of 54% (95% CI 45–63%). Conclusions In our systematic review, comparison of OBP versus ABP measurements disclosed a high proportion of MHT, uncontrolled HTN and, to a lesser extent, WCH in KTRs. These results suggest that HTN is not adequately diagnosed and controlled by OBP recordings in this population. Furthermore, the high prevalence of non-dippers confirmed that circadian rhythm is commonly disturbed in KTRs.

BACKGROUND: The prevalence of chronic kidney disease (CKD) is increasing worldwide in part due to population ageing. Identifying risk factors for age-related kidney function decline could help in understanding mechanisms for kidney ageing. Sodium and potassium intakes are associated with CKD progression in the renal population, but little is known on their role in renal function decline [mean estimated glomerular filtration rate variation (ΔeGFR)] in the general adult population. METHOD: We therefore explored the association of urinary sodium and potassium excretions with ΔeGFR in a longitudinal population-based cohort. We estimated 24-h urinary sodium (eUNa), potassium (eUK) and sodium-to-potassium ratio (eUNa/K) from spot urine using Kawasaki formulae. We performed multivariate linear regression models studying the association of eUNa, eUK and eUNa/K with yearly ΔeGFR, taking several covariates into account, including baseline eGFR and albuminuria. RESULTS: There were 4141 white participants from which 54.3% were women. Median age was 51.5 [43.6-60.6] years and mean baseline eGFR 88 (SD 15) ml/min per 1.73 m. During a median follow-up of 5.4 years, mean ΔeGFR was -0.59 (SD 1.68) ml/min per 1.73 m per year. In the fully adjusted model, high eUNa and eUNa/K were associated with faster renal function decline with standardized coefficients β = -0.07 (95% confidence interval: -0.11 to -0.04) and β = -0.05 (95% confidence interval: -0.08 to -0.02), respectively. By contrast, eUK, taken alone, showed no association. CONCLUSION: These results suggest that dietary sodium and potassium intakes may play a role in kidney function decline in the general adult population. Whether lowering sodium and increasing potassium in the diet may help in CKD prevention needs further exploration.