Lege Artis Medicinae

[The importance of endothelial dysfunction and possibilities of its treatment in chronic heart failure]

MOHÁCSI Attila, LIZANECZ Erzsébet

AUGUST 20, 2002

Lege Artis Medicinae - 2002;12(08)

[Endothelial cells - under autocrine and paracrine control - may have a central role in the regulation of vascular tone. Endothelial dysfunction is a very early sign of heart failure but the clinical consequence is not well understood. Recent evidence suggests that upregulation of the neuro-endocrine-, and the renin-angiotensin-aldosterone system would lead to increased tissue- and circulating angiotensin-II levels. Elevated concentration of angiotensin-II provides a mechanism by which vasomotor responses to nitric oxide, prostaglandins are blunted, while the effects of vasoconstrictors such as thromboxans, endothelin and chatecholamins are enhanced. The higher basal vascular tone leads to the degeneration and atrophy of skeletal muscle, moreover to the the ischaemic damage of myocardial cells. Because renin-angiotensinaldosterone system is under genetic control, the deleterious effects of angiotensin-II depends on the angiotensin-converting enzyme gene. Pharmacological attempts to counteract endothelial dysfunction in heart failure may include the angiotensin-converting enzyme inhibitor, which can potentially improve the endothel dependent vasodilatation response. The importance of measuring endothelial function by non-invasive techniques is yet unknown, thus, before we introduce the widespread testing of patients for endothelial function, more research has to be done.]

COMMENTS

0 comments

Further articles in this publication

Lege Artis Medicinae

[Physicians’ attitudes and suppositions in 2001 in the Polyclinic of the Hospitaller Brothers in Budapest]

BALÁZS Péter

[INTRODUCTION - Following the total socioeconomic changes in Hungary in 1989, no scientific analysis has been made about physicians' religious attributes in the new circumstances. These attributes, after four decades of political anticlericalism may affect essentially the ideological and socio-economic patterns of medical professionalism. Hungary’s 2001 census favoured such an inquiry, since it went back to the traditional questions about religious affiliations. METHODS - The ”sensitive” questions ot the census were accepted without any obstacle in the whole population and backed up the present study together with the newly established religious atmosphere in the hospital of roman catholic Hospitaller Brothers of St. John of God, which was reopened on the 1st of July, 2000. The collection of data started in November 2000 ending in December 2001. All 98 full time employed physicians participated in the inquiry carried out by personal interviews guided by the same 51 questions. Following more than half a century span, the aim of the present study was to gain measurable information about the doctors’ unknown religious affiliation and its impact on clinical problems with ethical dimensions. RESULTS - All the doctors cooperated willingly in face-to-face interviews. There was a high proportion of religious affiliation (83 persons out of 98) without any sign of mysticism in the professional values. However, the pre-eminent role of psychological factors in the healing process was stressed, opposed to the simplified materialism of medicine. The same ideological pattern was represented while ranking other professions in the social hierarchy. No physicians experienced a conflict between their religious belief and professional activity in the dayto- day service. CONCLUSION - According to the extremely underpaid medical profession in Hungary, doctors of the new hospital do not believe that now they should tolerate their underpaid status as altruistic missionaries. However, they know exactly that balancing professionalism and business of medicine, is not a task for a single hospital but an urgent one of the whole society.]

Lege Artis Medicinae

[38th Annual Meeting of the European Association for the Study of Diabetes]

JERMENDY György

Lege Artis Medicinae

[Esomeprazole compared with lansoprazole in the treatment of erosive esophagitis]

NEMESÁNSZKY Elemér

Lege Artis Medicinae

[ESPS-2 (European Stroke Prevention Study 2)]

MATOS Lajos

Lege Artis Medicinae

[Atypical forms of the gastroesophageal reflux disease]

KIS János Tibor, NEMESÁNSZKY Elemér

[There is growing interest in the gastroenterology literature towards gastroesophageal reflux disease (GERD) these days. The prevalence of the disease is much higher than estimated earlier and it frequently appears in atypical forms. Literature data suggests that 30-40% of the individuals suffer from gastroesophageal reflux disease. A broad spectrum of presentation of gastroesophageal reflux disease exists, e.g. noncardiac chest-pain, ear-nose-throat symptoms, pulmonary symptoms, dental erosions, chronic cough and hiccups. Atypical forms often cause diagnostic and treatment difficulties. Authors analyze the frequency, morbidity and the pathomechanism of the extraesophageal manifestations, based on self-experience. The main goal of the review is to help to establish the diagnosis of GERD, to recognize its atypical signs and to outline the diagnostic steps to be taken. Most up-to-date treatment strategies are also presented. By the demonstration of interesting cases, authors emphasize the diagnostic importance of intragastric pH-monitoring.]

All articles in the issue

Related contents

Lege Artis Medicinae

[Paradigm shift in the drug therapy of HFrEF]

HEPP Tamás, VARJAS Norbert, BENCZÚR Béla

[The incidence and prevalence of heart failure (HF) is constantly increasing, its mor­bidity and mortality are still high, thus the disease burden is huge and its proper treatment is of paramount importance. Subs­tantial evidence on improving its prognosis remains available only by the treatment of chronic heart failure with reduced left ventricular function (HFrEF). There have been published a number of “milestone” studies in the last decades, the results of which fundamentally determined the HF therapy until recently. Baseline therapy for HFrEF has been placed on three pillars for a long time: angiotensin-converting-en­zyme inhibitors (ACEI), beta-blocker (BB), and mi­ne­ralocorticoid receptor antagonist (MRA) are included in different heart failure guide­lines with I/A level recommendation. The ground-breaking highly important PARADIGM-HF study was published in 2014, and examined an entirely new class of drugs, the sacubitril/valsartan, which belongs to the group of angiotensin receptor blocking/neprilysin inhibitors (ARNI) in HFrEF patients. Results of this study showed that sacubitril/valsartan significantly reduced the primary composite endpoint of CV mortality and HF hospitalization by 20% and reduced overall mortality by 16% compared to an active comparator enalapril, which has the broadest evidence in HFrEF therapy. The 2016 European Society of Cardiology (ESC) HF guidelines recommended the use of sacubitril/valsartan with an I/B evidence level as a replacement for an ACEI to further reducing the risk of HF hospitalization and death of out-patients with HFrEF who remained symptomatic despite optimal treatment with an ACEI, a BB and an MRA. Later, several smaller studies concerned sacubitril/valsartan with slightly different indications and in other patient groups. The PIONEER-HF study demonstrated that early initiation of sacubitril/valsartan therapy after the stabiliza­tion of acute HF is safe and effective in HFrEF patients, reduces more rapidly the NT-proBNP levels - which correlates with HF prognosis -, than the enalapril. The TRANSITION and TITRATION studies provided useful information on the initiation of sacubitril/valsartan therapy and the strategy of dose titration. The appearance of sacubitril/valsartan opened a new era in HFrEF therapy a few years ago, an era we are actually experiencing in Hungary. Thanks to SGLT-2 inhibitors, it is also possible that we are at the door of an even newer therapeutic era. This question is expected to be answered in the new ESC HF-guidelines to be published soon this year. ]

Hypertension and nephrology

[Echocardiographic judgment of the left ventricular remodelling and heart failure’s types]

HATI Krisztina

[The heart responds to the damage to the heart muscle with various changes that are regulated by complex processes. If the harm is irreversible, changes that begin as an adaptation can become chronic and permanently worsen heart function. The author details below the pathological remodelling of the left ventricle that can lead to heart failure. It covers the types of heart failure based on the latest recommendations and presents the echocardiographic examination methods that can be used to assess the diastolic, systolic and right ventricular function of the heart.]

Hypertension and nephrology

[Diuretikumok hypertoniában - 2010]

BARNA István

[Diuretics (especially thiazide derivatives and indapamide that also has vasodilator efficacy) are considered as first line treatment in hypertension. They are particularly favourable in the treatment of overweight, elderly, isolated systolic hypertensive patients suffering from type 2 diabetes and metabolic syndrome or in mild renal and cardiac insufficiency. They can be ideally combined with other antihypertensive agents (primarily with angiotensin-converting enzyme inhibitors, angiotensin receptor blocking agents és béta-blockers). If hypertension is associated with left ventricular hypertrophy or stroke indapamide is the appropriate choice. In case of left ventricular dysfunction and heart failure thiazide and/or furosemide is the adequate option. Low dose diuretics have no clinically relevant side effects and reduce cardiac mortality to the same extent as other pharmaceutical interventions.]

Lege Artis Medicinae

[RECOGNITION AND MANAGEMENT OF ACUTE HEART FAILURE]

KARLÓCAI Kristóf

[Acute heart failure may develop in previously healthy hearts. Nevertheless, structural abnormalities can facilitate its development and also, chronic heart failure can progress into acute stage. Considering the total cost of care in the patient's life, this is the most expensive heart disease. The clinical signs and physical abnormalities are usually of diagnostic power, however, instrumental investigations are necessary to recognize complications and to guide therapy. Patients should be monitored in well equipped coronary care units. Therapy consists of medications, coronary revascularization and use of mechanical assist devices.]

Lege Artis Medicinae

[NON-PHARMACOLOGICAL TREATMENT OF CHRONIC HEART FAILURE]

MERKELY Béla, RÓKA Attila

[Heart failure has a poor prognosis despite the advances in pharmacological treatment. The utilization of non-pharmacological treatment with appropriate indications significantly improves the quality of life and life expectancy of these patients. Cardiac resynchronization therapy with biventricular pacemaker has a clinically proven efficacy in the treatment of heart failure associated with intraventricular dyssynchrony. Implantable cardioverter- defibrillators decrease the mortality from sudden cardiac death. Heart transplantation is needed in cases refractory to therapy. There are several other non-pharmacological treatment approaches, including mechanical circulatory assist devices, total artificial heart and ultrafiltration, whose routine application is not recommended due to limited clinical experience, but the initial results are promising.]