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H. Resić, N. Kukavica, F. Masnic, N. Prohic, V. Sahović, S. Ajanović, A. Ćorić, E. Avdić et al.

Pacijenti s kroničnom bubrežnom bolešću (HBB) imaju smanjeni odgovor na vakcinaciju zbog općeg slabljenja imunološkog sustava povezanog s uremijom. U odnosu na vakcinaciju u pacijenata bez HBB-a, na primjer, dijalizni pacijenti imaju niži titar antitijela i nemogućnost održavanja adekvatnog titra antitijela tijeNovi protokol vakciNacije pacijeNata Na hemodijalizi protiv hepatitisa B iskustvo jedNog ceNtra

H. Resić, N. Kukavica, F. Masnic, N. Prohic, V. Sahović, S. Ajanović, A. Ćorić, E. Avdić et al.

UNLABELLED Patients with end stage renal disease (ESRD) have a reduced response to vaccination against hepatitis B infection. The aim of the study has been to determine the adequacy of immune response with new protocol of vaccination against hepatitis B infection. PATIENTS AND METHODS The study included incident hemodialysis patients since 2008 until 2011 at the Clinic of Hemodialysis of the Clinical Center of the University of Sarajevo. We started the new vaccination protocol in September 2009. New protocol implied vaccination six month before starting renal replacement therapy (RRT) and "ic" (intracutaneously) application vaccine vs. "sc" (subcutaneously) application. Vaccination was carried out for over 12 months. The follow up period lasted from 2009 to 2011. RESULTS The study included 64 patients, men were represented with 57,81% (37), and 42,19% women (27), who were divided in two groups. The first group included patients from the period from 2008 to 2009, who have been vaccinated under the old vaccination protocol, while the second group included patients with the new protocol from September 2009 to 2011. The first group had 28 patients, mean age of patients was 55,17 +/- 11.84 and mean duration of hemodialysis was 24,65 +/- 5,32 months. The second group had 36 patients, mean age of patients was 62,79 +/- 15,88 years, and mean duration of hemodialysis was 22,16 +/- 24,53 month. Neither group of patient has been previously vaccinated, nor these had positive in serum antiHBs before vaccination in second group. Five patients received a booster dose of vaccine, after which 4 showed adequate responses to anti HbS. In the first group of patients, out of total of 28 patients, 15 patients did not respond response with the adequate anti-HbS titer at the end of vaccination. In the second group of patients, out of 36 patients 31 of them responded to the vaccination with the new protocol, which was statistically significant (p<0,005). The total percentage of patients with adequate titer of antiHBs after vaccination towards a new protocol was 97.43% and the percentage of patients who required booster dose of vaccines was 12.82%. CONCLUSION Vaccination of patients in ESRD,six months before renal replacement therapy and intradermal application of vaccine vs. subcutaneously, improved immune response of our patients.

INTRODUCTION Cardiovascular diseases are one of the main causes of morbidity and mortality in dialysis patients. High incidence of cardiovascular diseases in patients with chronic kidney disease (CKD) can not soley be explained by traditional risk factors. Several studies have confirmed association between vascular calcification and increased mortality. MATERIALS AND METHODS This study included total of 44 patients on chronic hemodialysis program, 18 women and 26 men, with average age of 50.66 +/- 11.62 years and average duration of treatment of 100.25=52.83 months. We analyzed socio-demographic parameters and standard laboratory findings. X-ray of hand and pelvis was obtained from each patient along with echocardiography and carotid ultrasound imaging. To estimate the level of vascular calcifications on the X-rays, we used the simple vascular score (sVC). RESULTS Using noninvasive methods, we found vascular calcifications in 26 (59%) patients. In 22 (45%) patients, vascular calcifications were found in X-rays. Four (9%) patients with vascular calcifications lacked any abnormality on X-rays but had calcified plaques on carotid arteries or hart valves. In the group of patients that had vascular calcifications, 3 (14%) patients had sVC score of 2,2 (9%) had score of 3,7 (32%) had score of 4,4 (18%) had score of 6, and 6 (27%) had sVC score of 8. Comparing the group of patients with and without vascular calcifications, we found statistically significant age difference (p<0.05) as well as difference in the duration of hemodialysis (p<0.05). There were no other significant differences found between the two groups. There is a statistically significant correlation between sVC score and level of calcium (p<0.09) and iPTH (p<0.05). Using regression model for increase of sVC score, we found significant correlation with duration of hemodialysis (p<0.05). CONCLUSION Existence of vascular calcifications represents warning sign of increased cardiovascular risk. Simple vascular score is an easy method for assessing that risk. In our study, increased frequency of vascular calcifications was directly correlated with older age and length of hemodialysis. Standard X-rays, echocardiography and ultrasound imaging can be used in screening of vascular calcifications. Among these methods, X-ray has advantage because it is widely available and easy to interpret.

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