Hypertension and nephrology

[Prognostic significance of stiffness index determined by digital volume pulse method in polycystic kidney disease]

SÁGI Balázs, KÉSŐI Bence, KÉSŐI István, VAS Tibor, CSIKY Botond, NAGY Judit, KOVÁCS Tibor

MAY 20, 2017

Hypertension and nephrology - 2017;21(03)

[Introduction: It is known from previous studies, that in chronic renal failure cardiovascular mortality and morbidity are more frequent than in the general population. The prognostic significance of arterial stiffness on cardiovascular outcomes trials was first demonstrated in end-stage renal disease patients by epidemiological longitudinal studies. Our aim was to assess the prognostic significance of arterial stiffness in polycystic kidney disease. Methods: 55 patients with polycystic kidney disease (PKD) were examined and followed in our clinic. Pulse wave velocity was determined by digital volume pulse (DVP) method, and a so-called stiffness index (SI DVP) was calculated. MDRD formula was used for estimating the glomerular filtration rate (eGFR, mL/min/1.73 m2) to determine renal function. Patients were observed regularly, in every 3-6 months, and we checked lab tests, which assessed the patient’s renal function and cardiovascular events occurred in patients were collected in our outpatient department. Results: Our study involved 55 patients, 21 were male, the mean age was 45±12 years. The average follow-up was 63±32 months. The average value of the stiffness index was 11.11±2.22 m/s. We divided the patients by 11 m/s as cut off point of SI values into two groups and analysed their outcome. In the increased arterial stiffness group (SI >11 m / s) the probability of the combined endpoint occurrence was signi - fi cantly higher than in the group with flexible arteries (χ-square: 4.571; p=0.033). Between the two groups we did not found significant difference in cardiovascular endpoint, but we found a statistically significant difference between the two groups in renal outcomes (χ-square: 5.591; p=0.018). Conclusion: In polycystic kidney disease the increased arterial stiffness may predict the onset of end-stage renal failure. Digital Pulse volume as determined by Pulse Trace system appears an appropriate method for making prognosis in chronic kidney disease.]

COMMENTS

0 comments

Further articles in this publication

Hypertension and nephrology

[Report on the 5th Szeged Hypertension Days]

Hypertension and nephrology

[Prevalence of isolated systolic hypertension in our country]

KÉKES Ede, BARNA István, DAIKI Tenno, DANKOVICS Gergely, KISS István

[Prevalence of hypertension over the age of 56 is increasing in size and a significant proportion (60-80%) of isolated systolic hypertension. Within the population screening in the older age groups - in the light of economic development - 25-40% of the prevalence. We have an opportunity to analyse the prevalence and specificity of isolated systolic hypertension from age 36 to age 10 years on the base of 7 years data of the MÁESZ (Comprehensive Health Protection Screening Program of Hungary 2010- 2020) survey. Between 56-65 years 23.27-24.23% (male/female) 66-75 years 34,89-33,15% and over 76 years 44.04-41.5% occurrence was found. Divergence of systolic and diastolic pressure has begun since 36 years. Pulse pressure was used to separate individuals with varying degree of vascular disorders.]

Hypertension and nephrology

[New agents in the therapy of hyperkalaemia]

PATÓ Éva, DEÁK György

[Serum potassium level higher than 5,5 mmol/l denotes hyperkalemia that becomes severe above 7,5 mmol/l being a potentially life threatening condition due to ventricular arrythmias. It may develop as a consequence of high potassium intake, decreased renal excretion, and extracellular potassium shift. Its treatment is a challenge even nowadays especially in the setting of chronic kidney disease, diabetes mellitus, and heart failure where RAAS inhibion is an essential component of the therapy. Sodium polystyrene sulfonate, an ion exchange resin is applied for more than fifty years. Recently new angents, patiromer and sodium zirconium cyclosylicate (ZS-9) were introduced and available results show a safer, more tolerable and predicatble effect. Efficiency of patiromer to reduce hyperkalemia is verified in clinical trials in patients with chronic kidney disease, or diabetes mellitus, or hypertension or heart failure on RAAS inhibitor therapy.]

Hypertension and nephrology

[Antihypertenive effect of rilmenidine. Evaluation of the Hungarian multicenter VERITAS study]

FARSANG Csaba

[The VERITAS study showed that in hypertensive patients the imidazoline I1 receptor agonist, rilmenidine significantly decreased the office blood pressure as well as the blood pressure measured by ambulatory blood pressure monitoring (ABPM). The white-coat reaction and left ventricular hyperthrophy (LVH) were also decreased. Ain a separate study involving hypertensive subjects rilmenidine significantly increased baroreflex sensitivity. This effect may contribute - mainly during daytime - to the antihypertensive effect.]

Hypertension and nephrology

[A Letter to Our Readers]

KÉKES Ede, KISS István

All articles in the issue

Related contents

Clinical Neuroscience

Risk factors for ischemic stroke and stroke subtypes in patients with chronic kidney disease

GÜLER Siber, NAKUS Engin, UTKU Ufuk

Background - The aim of this study was to compare ischemic stroke subtypes with the effects of risk factors, the relationship between grades of kidney disease and the severity of stroke subtypes. Methods - The current study was designed retrospectively and performed with data of patients who were hospitalised due to ischemic stroke. We included 198 subjects who were diagnosed with ischemic stroke of Grade 3 and above with chronic kidney disease. Results - In our study were reported advanced age, coronary artery disease, moderate kidney disease as the most frequent risk factors for cardioembolic etiology. Hypertension, hyperlipidemia, smoking and alcohol consumption were the most frequent risk factors for large-artery disease. Female sex and anaemia were the most frequent risk factors for small-vessel disease. Dialysis and severe kidney disease were the most frequent risk factors in unknown etiologies, while male sex, diabetes mellitus, prior stroke and mild kidney disease were the most frequent risk factors for other etiologies. National Institute of Health Stroke Scale (NIHSS) scores were lower for small-vessel disease compared with other etiologies. This relation was statistically significant (p=0.002). Conclusion - In order to improve the prognosis in ischemic stroke with chronic kidney disease, the risk factors have to be recognised and the treatment options must be modified according to those risk factors.

Lege Artis Medicinae

[Factors influencing anisocytosis among inpatients with chronic kidney disease]

MOLNÁR D. László, KISS István, SZAKONY Szilvia, AMBRUS Csaba

[The coefficient of variation of RDW (RDW-CV) is a predictor of mortality in several patient cohorts. RDW and other factors were analyzed in an earlier report as potential predictors of inpatient mortality. In this paper, determinants of RDW were examined in a sample of hospitalized patients with chronic kidney disease not yet on dialysis using both frequentist and bayesian ANCOVA models. For the non-informative Bayesian model no prior knowledge about the model parameters was assumed. For the informative Bayesian model prior knowledge from previous experience was applied. Calculations were performed in R with the faraway, car and MCMCPack programme packages. Male gender identity, higher mch and mcv were strongly associated with higher RDW. Blood glucose concentration, white blood cell count, blood hemoglobin concentration, platelet count, age and glomerular fil-tration rate showed inverse relationship with RDW levels. ]

Hypertension and nephrology

[Role of ketoanalogue amino acids and diet in the treatment of patients with chronic kidney disease]

KISS István, HARIS Ágnes, DEÁK György

[Low protein diet is an important component of the non-pharmacological treatment of patients with chronic kidney disease (CKD). Along with the diet it is important to maintain appropriate energy intake to avoid malnutrition. It is recommended to supplement low protein diet (0.6-0.7 g protein/kg body weight/day) with essential amino acids and their ketoanalogues (ketoacids) in a dose of 1 tablet/8-10 kg body weight if there is a threat of protein malnutrition (eg. vegan diet). Very low protein diet (0.3-0.4 g protein/kg body weight/day) should be supplemented with ketoacids in a dose of 1 tablet/5 kg body weight. Low protein diet is recommended for patients with CKD stage 3 and progressively declining renal function, or nephrotic syndrome; in diabetic nephropathy; in CKD stage 4 and non-dialyzed CKD stage 5. Nephroprotective effect of very low protein diet is primarily expected is patients with an eGFR below 20-25 ml/min/1.73 m2 and good compliance. Dietary protein restriction may diminish acidosis and proteinuria, slow the progression of CKD and delay initiation of dialysis. Diets reduced in protein supplemented with appropriate energy intake and ketoacids are nutritionally safe. Dietary education and guidance of patients by qualified dietitians are of great importance in nephrology clinics. We illustrate the main points of our review with case reports.]

Lege Artis Medicinae

[County level mortality data of urogenital system in Hungary between 2010-2014]

KISS István, PAKSY András

[According to The International Statistical Classification of Diseases and Related Health Problems (10th Revision, ICD 10; XIV), urogenital diseases resulted in an average 910 yearly deaths in Hungary from 2010 through 2014, less than 1% of the cumulative mortality rate. Out of all urogenital conditions, kidney and bladder diseases were the leading cause of death, accounting for nearly 85 percent of all deaths in the examined period. It should be noted that mortality due to urogenital cancers, renovascular hypertonia, diabetic nephropathy, congenital malformations and pathologies related to childbirth and pregnancy are excluded from consideration in the present review. As the Hungarian Central Statistical Office does not disclose the causes of death by age and gender at its county-level data, this paper reports gender-specific mortality rates. Due to the fact that the county-level mortality rate of urogenital diseases is low and the yearly standard deviation is high, the five-year overall mortality rate of 2010-2014 is presented. Hungarian counties differ greatly in terms of mortality from urogenital diseases. The number of deaths per 100 000 population ranges between 6.74 in Békés county and 16.38 in Fejér county. Counties within the same region may exhibit substantially different mortality rates. An overall 7.01 deaths per 100 000 population was reported in Győr-Moson-Sopron county, whereas among residents of the neighbouring Vas county the rate was reported as 14.73 per 100 000 population. The observed variations prevail even when standardised mortality rates are compared and thus the differences in the counties’ age distributions are accounted for. Regional differences become more apparent when only the deaths caused by kidney diseases are analysed out of all urogenital pathologies. In this case, two- or threefold differences are observed between the respective Hungarian counties. Major disparities are still present between counties within the same region. For example, the number of deaths per 100.000 population is 3.74 in Hajdú-Bihar county, and 8.04 in Jász-Nagykun-Szolnok county, respectively. The diagnosis frequency of kidney diseases has a strong positive correlation with case fatality, but it may not fully account for all regional variations in mortality rates. Regional characteristics of dialytic care and the accessibility of dialytic facilities is not related to patient mortality. ]

Hypertension and nephrology

[Serum uric acid level in hypertension. Domestic experience based on the data of the Hungarian Hypertension Registry 2011., 2013. and 2015. Part III. - Relation of uric acid to clinical and laboratory characteristics]

KÉKES Ede, PAKSY András, ALFÖLDI Sándor

[2013. and 2015, we examined the correlation between the serum uric acid level and blood pressure, target blood pressure, prevalence of ISH and other diseases associated to high blood pressure used trend analysis and linear regression in 22,668 hypertensive men (mean age 60.8 years) and 24,684 hypertensive women (mean age 64.1 years). We have extended the correlation analysis to metabolic factors (BMI, abdominal circumference, lipid profile, blood sugar) and kidney function. Significant correlation was found between SH level and systolic and diastolic blood pressure as well as target blood pressure. There was a significant correlation between SH level and metabolic parameters (abdominal circumference, BMI, total cholesterol, HDL cholesterol, triglyceride, fasting blood sugar) and in hyperuricemia the prevalence of metabolic syndrome was higher. As the level of SH increases, the prevalence of hypertension-related KVB, ISZB and diabetes have increased. The closest correlation between uric acid levels and chronic kidney disease was in women and between the uric acid levels and ischemic heart disease in men. ur analysis supports the international declaration that hyperuricemia is an independent cardiovascular, metabolic and renal risk factor.]