LAM Extra for General Practicioners

[Alzheimer’s disease and arrhythmia: cause, effect, complication]

PETŐ Balázs, KOVÁCS Tibor

FEBRUARY 20, 2015

LAM Extra for General Practicioners - 2015;7(01)

[Alzheimer’s disease (AD) is a new endemic of the 21st century which becomes the biggest health and social problem of the ageing societies in the next few decades. Vascular factors, such as cardiac arrhythmias, especially atrial fibrillation, play an important role in the pathogenesis of AD. Arrhythmias might develop as a consequence of AD, too, and they might be caused by the cholinergic medications used in the treatment of AD. In addition, AD has a major influence on the treatment of arrhythmias, especially atrial fibrillation. Because of these, AD and arrhythmias might accompany each other in the practice of several medical specialties; these interactions are reviewed in this paper. ]

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LAM Extra for General Practicioners

[Treatment of hepatits C virus infected patients with cirrhosis in real-life conditions in Hungary with the two pegylated interferons]

[AIMS - In this trial we have analyzed the data of cirrhotic naiv as well as treatment experienced patients with chronic hepatitis C, treated in the East-Hungarian hepatology centers, between 2004 and 2010, because in the era of triple combinations, we mostly treat cirrhotic patients. PATIENTS AND METHODS - We have found 272 patients and in most of them the cirrhosis was proven by biopsy. These patients were treated with pegylated interferon (pegIFN) alpha plus ribavirin in combination, 172 were naiv and 100 patients were treatment experienced. Data were collected retrospectively and the pretreatment parameters like age, sex, body weight, transaminase level, genotype, initial viral load, comorbidities, and proportion of first and repeated treatments have been analyzed. We have investigated the influence of the initial parameters as well as the type of pegIFN on the complete early virologic response (cEVR) and on the sustained virological response (SVR). RESULTS - The cEVR was 27% (74/272) and the SVR was 21% (58/272) in the whole patient population. With pegIFN a-2a, 32% (45/141) cEVR and 28% (39/141) SVR, whereas with pegIFN a-2b 22% (29/131) cEVR and 15% (19/131) SVR were achieved. Among this patient population the largest subgroup was the naiv patients with high viral load (HVL). In this subgroup the SVR was 21% (28/132). However, with pegIFN a-2a SVR was 29% (21/73), whereas with pegIFN a-2b SVR was only 12% (7/59). The above differences found between the two pegIFNs proved to be statistically significant. Age <40 years, low viral load (LVL) and treatment with pegIFN a-2a proved to be independent positive factors influencing cEVR as well as SVR, by multiple logistic regression analysis. CONCLUSION - According to these results, cirrhotic patients with hepatitis C may benefit if pegIFN a-2a is used as backbone therapy in triple combinations. ]

LAM Extra for General Practicioners

[Insertion of percutaneous peritoneal dialysis catheter using Seldinger technic with assistance of image amplifier ]

PETHŐ Ákos Géza, SZABÓ Réka, SZŰCS Attila, BALLA József

[INTRODUCTION - Continuous Ambula­tory Peritoneal Dialysis (CAPD) treatment is widespread used over the years as a result of technical progress. As with any renal replacement therapy, in hemodialysis patients in time made vascular access, also the success of the CAPD depends on the in time inserted catheter for peritoneal dialysis. PATIENTS AND METHOD - Inserting a catheter for chronic peritoneal dialysis in Hungary is currently exclusively surgical procedure. The successfully CAPD treatment is so essential to insert the peritoneal dialysis catheter by dedicated surgeon. The intervention is often not a priority in the surgical tender, and in many places queues delaying the surgery. Proposed as an alternative to the percutaneous technique introduction. If nephrologist are familiar with basic surgical procedures by providing appropriate means, the percutaneous catheter insertion technique can be performed. RESULTS - In the spring of 2014, we introduced in Hungary first this procedure, which reported in the international literature as percutaneous PD-catheter insertion method. The technique was modified to the primary entry point determined by the typical abdominal puncture site. Puncture of the abdomen is performed by physicians as a routine intervention, which is widely accepted. After selecting the appropriate patient population and detailed medical information, patients are prepeared, under x-ray fluoroscopy imaging the implants were made. So far 10 catheter were implanted under this technique, all of them successfully. Thanks to the minimal invasive intervention, the patients healing was significantly faster, after the day of catheter-insertion we were able to start drainage. By the traditional surgical implantation the recovery time is six weeks. CONCLUsiONS - In all cases, when a surgeon not willing to insert the peritoneal dialysis catheter, the percutaneous technique can be safe. All of the catheters made by us are working well. Of course, the surgical procedure is still indispensable, however, and this is the percutaneous technique’s advantage, the CAPD treatment can be started after the intervention. ]

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Effects of valproate, carbamazepine and levetiracetam on Tp-e interval, Tp-e/QT and Tp-e/QTc ratio

YASAR Altun, ERDOGAN Yasar

Aim - To evaluate P-wave dispersion before and after antiepileptic drug (AED) treatment as well as to investigate the risk of ventricular repolarization using the Tpeak-Tend (Tp-e) interval and Tp-e/QT ratio in patients with epileptic disorder. Methods - A total of 63 patients receiving AED therapy and 35 healthy adults were included. ECG recordings were obtained before and 3 months after anti-epileptic treatment among patients with epilepsy. For both groups, Tp-e and Tp-e/QT ratio were measured using a 12-lead ECG device. Results - Tp-e interval, Tpe/QT and Tp-e/QTc ratios were found to be higher in the patient group than in the control group (p<0.05, for all), while QTmax ratio was significantly lower in the patient group. After 3 months of AED therapy, significant increases in QT max, QTc max, QTcd, Tp-e, Tp-e/QT, and Tp-e/QTc were found among the patients (p<0.05). When the arrhythmic effects of the drugs before and after treatment were compared, especially in the valproic acid group, there were significant increases in Tp-e interval, Tp-e/QT and Tp-e/QTc values after three months of treatment (p<0.05). Carbamazepine and levetiracetam groups were not statistically significant in terms of pre- and post-treatment values. Conclusions - It was concluded that an arrhythmogenic environment may be associated with the disease, and patients who received AED monotherapy may need to be followed up more closely for arrhythmia.

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[Epidemiology of dementia in Hungary]

ÉRSEK Katalin, KÁRPÁTI Krisztián, KOVÁCS Tibor, CSILLIK Gabriella, GULÁCSI L. Ádám, GULÁCSI László

[Objective - To estimate the epidemiology and the distribution of disease severity of dementia in Hungary, using published data. To estimate the demented population of 2008 and to make a projection for 2050. Methodology - With an outlook for the international professional literature and the available Hungarian information we examine the epidemiology of dementia in Hungary by age-groups and disease severity (according to MMSE categories), then make our estimation for the entire population. Results - Based on the estimation of the number of demented people in Hungary there is a noticeable difference between the domestic and the internationally published data. According to previous Hungarian studies, the number of the demented subjects vary between 530 and 917 thousand patients. Multiplying the elderly age-group’s populations by the global prevalence data it results in 101 thousand of demented patients. Estimation by the domestic published data we remarkably overestimate the presumed value, whereas by using the global prevalence figures we underestimate. Conclusions - There is a strong need for a representative study to obtain exact figures on the prevalence of dementia in Hungary. Getting exact figures of the Hungarian prevalence of dementia it is a strong need an overall representative study. With the lack of it the health and social care systems are not able to prepare for providing the increasing number of patients.]

Lege Artis Medicinae

[Sudden cardiac death in athletes - cardiac electrophysiology point of view]

VARRÓ András

[Sudden cardiac death of athletes is very rare (1/50 000 to 1/100 000 annually) but it is still 2 to 4 times more frequent than that of the agematched normal population. In addition, it attracts peculiar media attention. Sudden cardiac death in athletes is supposed to not primarily have an ischemic origin but most likely relates to repolarization abnormalities. These may be caused by several independent and/or dependent factors such as benign cardiac hypertrophy developing normally in athletes (athlete’s heart), hypertrophic cardiomyopathy, increased sympathetic activity, genetic defects, seemingly harmless drugs, doping agents, food, and dietary supplements. These factors together can increase inhomogeneities in myocardial repolarization (“substrate”). In this case, an otherwise harmless extrasystole (“trigger”) occurring with unlucky timing may - although very seldomly - elicit fatal arrhythmias. Thus, effective prevention of sudden cardiac death may include new types of cost-effective cardiac electrophysiological screening methods (ECG or echocardiography) and, in case of a high level of suspicion, more costly genetic tests can be considered.]

Clinical Neuroscience

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[Background and purpose - Mild cognitive impairment (MCI) is a heterogenous syndrome considered as a prodromal state of dementia with clinical importance in the early detection of Alzheimer’s Disease. We are currently developing an MCI screening instrument, the Early Mental Test (EMT) suitable to the needs of primary care physicians. The present study describes the validation process of the 6.2 version of the test. Methods - Only subjects (n=132, female 95, male 37) over the age of 55 (mean age 69.2 years (SD=6.59)) scoring at least 20 points on Mini-Mental State Examination (MMSE), mean education 11.17 years (SD=3.86) were included in the study. The psychometric evaluation consisted of Alzheimer’s Disease Assessment Scale Cognitive subscale (ADAS-Cog) and the 6.2 version of EMT. The statistical analyses were carried out using the 17.00 version of SPSS statistical package. Results - The optimalised cut-off point was found to be 3.45 points with corresponding 69% sensitivity, 69% specificity and 69% accuracy measures. The Cronbach-α, that describes the internal consistence of the test was 0.667, which is higher as compared with the same category in the case of the ADASCog (0.446). A weak negative rank correlation was found between the total score of EMT 6.2 and the age of probands (rs=-0.25, p=0.003). Similarly, only a weak correlation was found between the education levels and the total score of EMT 6.2 (rs=0.31, p<0.001). Two of the subtests, the repeated delayed short-time memory and the letter fluency test with a motorical distraction task had significantly better power to separate MCI and control groups than the other subtests of the EMT. Conclusion - The 6.2 version of EMT is a fast and simple detector of MCI with a similar sensitivity-specificity profile to the MMSE, but this version of the test definitely needs further development.]

Lege Artis Medicinae

[Alzheimer’s disease and arrhythmia: cause, effect, complication]

PETŐ Balázs, KOVÁCS Tibor

[Alzheimer’s disease (AD) is a new endemic of the 21st century which becomes the biggest health and social problem of the ageing societies in the next few decades. Vascular factors, such as cardiac arrhythmias, especially atrial fibrillation, play an important role in the pathogenesis of AD. Arrhythmias might develop as a consequence of AD, too, and they might be caused by the cholinergic medications used in the treatment of AD. In addition, AD has a major influence on the treatment of arrhythmias, especially atrial fibrillation. Because of these, AD and arrhythmias might accompany each other in the practice of several medical specialties; these interactions are reviewed in this paper. ]