Hypertension and nephrology

[Treatment of hypertension in chronic kidney disease and in renal failure]

KISS István

DECEMBER 08, 2012

Hypertension and nephrology - 2012;16(05)

[The number of patients with chronic renal disease is growing steadily over the past decade. The reason for this is the increasing number of patients developing diabetes mellitus and hypertension, diseases that have common complication of chronic kidney disease. There is evidence that in chronic kidney disease or end-stage renal disease high blood pressure is more common which has a very complex management. Renal patients were able to participate in a small number of clinical studies, so the evidence base of antihypertensive therapy from these studies is limited. Therefore professional guidelines made with thumbnail analysis are very important, which now appeared as the KDIGO recommendations in November 2012. The author of this quick presentation of the practice undertook to summarize the important messages of this paper.]

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Hypertension and nephrology

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[Hypertension is an important risk factor of chronic kidney disease (CKD) however CKD can cause hypertension. Untreated CKD may result in renal failure. Hypertension and CKD are important cardiovascular risk factors. Several mechanisms play role in the worsening of renal function. The main pathogenetic factor is the increased activity of the renin-angiotensin-aldosteron system (RAAS) that can result in glomerulosclerosis, destroy of nephrons and proteinuria. In the treatment of hypertension in CKD patients inhibiting RAAS is very important because ACE-inhibitors and angiotensin-receptor blockers provide efficient control not only of blood pressure, but also of proteinuria, an effect associated with improved long-term nephroprotection. Between ACE-inhibitors ramipril has proved nephro- and cardiovascular protection effect. Fix combination therapy of ramipril with amlodipine has a very pronounced blood pressure lowering effect and can improve patient compliance too.]

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[Association between the genetic polymorphism of heat-shock protein 72 and pediatric kidney diseases]

BÁNKI Nóra Fanni, RUSAI Krisztina, KÁROLY Éva, SZEBENI Bea, VANNAY Ádám, SALLAY Péter, REUSZ György, TULASSAY Tivadar, SZABÓ J. Attila, FEKETE Andrea

[Recurring urinary tract infections (UTI) in childhood may result in chronic- and end-stage-renal-disease (ESRD), which leads to the initiation of dialysis and renal transplantation (NTx). Heat shock protein (HSP) 72 protects the kidney, whereas it refolds destroyed proteins and cells, and helps regenerating the renal tissue. The HSPA1B (1267)G allele is associated with lower HSP72 expression. This study assesses the role of HSPA1B A(1267)G polymorphism using PCR-RFLP in 103 children treated because of recurrent UTI, 26 children after NTx and 235 healthy controls. Clinical data were also evaluated. HSPA1B (1267)GG genotype and HSPA1B (1267)G allele occurred more frequently in the UTI (p=0.0001; CI: 1.378-2.68) and in the NTx (p=0.014; CI: 2.29-187.7) patient group than in the controls group, and were associated with a higher risk for scarring (p=0.012; CI: 0.33-1.00) and renal malformation (p=0.0072; CI: 1.623- 140.6). Our data indicate a relationship between the carrier status of HSPA1B (1267)G allele and the development of recurrent UTI and ESRD, raising further questions about the clinical and therapeutic relevance of these polymorphism.]

Hypertension and nephrology

[The history of diuretic treatment in Hungary. Part I. Imre Fodor]

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[The diuretic effect of mercurial compounds was discovered in 1920. However, the term of “mercurial diuresis” was created 36 years earlier by Ernő Jendrassik. Imre Fodor published his experiences with the mercurial diuretic, which has been cited by several authors worldwide. The Hungarian pharmaceutical industry also took its part from the production of the mercurial diuretic with Novurit that proved to be an excellent and worldwide well known preparation in the next 40 years. Even Imre Fodor required the repeated administration of mercurial diuresis because of his severe cardiac oedema in the last period of his life. When the drug became ineffective, i.e. developed refractory oedema, he made a “self-experiment” with the administration of ACTH to restore the sensitiveness to the mercurial diuretic on the basis of most recent American literature at that time. His experience has been published by his colleagues just before his death. Imre Fodor was an eminent clinician, a school creating internist who entered his name into the science dealing with the use of diuretics.]

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Hypertension and nephrology

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[Prevalence of the isolated increase in systolic blood pressure ≥140 mmHg with normal or low diastolic blood pressure ≤80 mmHg, is defined as isolated systolic hypertension. Its prevalence increases with age up to >90% in patients aged >90 years. Isolated systolic hypertension is also found in the young and the clinical significance of it is still debated. For the therapy, those drugs should be used which have a license for use in children: angiotensin converting enzyme inhibitors, angiotensin AT-1 receptor antagonists, calcium channel blockers beta-blockers and diuretics and their combinations. The young adults with isolated systolic hypertension had a much higher risk of dying from coronary heart disease or cardiovascular disease, then the normotensive individuals, and should be treated to normalise their blood pressure. In the elderly and very elderly (>80 yrs), a wealth of data from large clinical trials are available, showing the necessity of treatment mostly with drug combinations - fix-combinations are preferred for increasing the adherence / persistence to therapy. Using diuretics, ACE-inhibitors / ARBs with calcium antagonists, and when needed diuretics and beta-blockers are suggested by recent European guidelines. The target is <140 mmHg, but in octogenarians <150 mmHg. Some studies are pressing for even lower SBP (to around 120 mm Hg), but it seems to be wise to balance advantages / disadvantages, so the optimal SBP may be around 130 mmHg.]

Hypertension and nephrology

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[There have been significant developments in the field of nephrology and dialysis as for the science and technology are concerned in the past decades. However, CKD patients still show high mortality and morbidity. From among the several factors determining the long-term outcome of CKD patients metabolic disorder and malnutrition play an important role. Malnutrition is often not diagnosed or is not paid enough attention to in the complex treatment of CKD patients. It is important to make both the patients and clinical staff more aware of proper nutrition and importance of prevention and treatment of malnutrition, respectively. The early diagnosis and treatment of malnutrition is of utmost importance in CKD patients. The long term renal failure and the accompanying malnutrition have a negative impact on their long term outcome and quality of life. Since the malnutrition causes a lot of complications, it is indispensable for dietitians and nephrologists to work closely together. Patient compliance is a determining factor in the successful implementation of renal diet.]

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