Case report : Severe mitral regurgitation due to rupture of the chordae tendineae and mitral valve pro-lapse (Barlow’s disease), with a left atrial volume of 37.6 mL/m 2 was verified in 43-year old patient. He was admitted for an examination due to frequent palpitations and fast and irregular heartbeats. In the anamnestic data, thrombosis of the veins of the right leg was verified (thrombosis of popliteal, posterior tibial and great saphenous vein during previous years). He carries mutations: heterozygote of factor V Leiden, with MTHFR C677T heterozygote (CT), PAI- 1 heterozygote (4G⁄5G) and MTHFR A1298C heterozygote. The surgical treatment was done, and mechanical valve was implanted. In the follow-ing months, the patient complained on frequent dizziness, with crises of consciousness, and a short-ness of breath. He was not suitable for beta-blocker therapy, as well as propafenone and amiodarone, which had been prescribed in therapy in the meantime. The 24-hour ECG Holter monitoring described various arrhythmias, most of the time AV block of the first degree with PQ interval up to 320 msec, oc-casionally second-degree atrioventricular block Mobitz II, polymorphic ventricular extrasystoles and one attack of non-sustained ventricular tachycardia (6 ventricular extrasystoles in row), with intermit-tent nodal rhythm, junctional tachycardia and atrial flutter with AV ratio 2:1. An electrophysiological study was performed, and the cavotricuspid isthmus (CTI) dependent atrial flutter was verified, and radiofrequent ablation was done. After the procedure patient was in sinus rhythm. During the next follow up visits, the patient was in sinus rhythm, on therapy with a low dose of nebivolol (inability to tolerate beta blockers) and ivabradine, along with vitamin K antagonists. Conclusion

On the occasion of the 11th Days of Academy of Medical Sciences of Bosnia and Herzegovina and 3rd Seminar about Writing, Editing and Publishing (SWEP) at Holiday hotel in Sarajevo was organized webinar about COVID-19 Pandemic experiences in Bosnia and Herzegovina. During the webinar members of the Academy from Bosnia and Herzegovina, Croatia, Serbia, North Macedonia, Poland, and USA participated with very interesting presentations (1-5). We also presented lecture about our institution and our professional experiences during pandemic time. Some of important facts which we presented are mentioned in this letter to editor. Medical Institute Bayer (MIB) is a continuation of the BH Heart Center Tuzla, which was founded in 2008. The goal of establishing the Center was to build a modern, functional hospital that will meet all prescribed norms and standards, and eliminate all limiting factors in the development of cardiac surgery, interventional cardiology and vascular surgery (Figure 1).

Introduction: Postoperative Atrial Fibrillation (POAF) is associated with a higher rate of postoperative complications and mortality, as well as with longer hospitalization and increased treatment costs. We have designed and performed a randomized, trial of pharmacological prophylaxis in which the event of interest is POAF. Aim: The aim of this study is to reduce the risk of postoperative, complications associated with this arrhythmia. Methods: We included 240 stable patients with a coronary heart disease, who were referred to elective surgical revascularization of the myocardium. The patients were assigned into three groups of 80 patients each: group A (BB, beta blocker, comparator), group B (BB+ Amiodarone) and group C (BB + Rosuvastatin). The goal was to establish whether intervention by combination therapy was more useful than a comparator. Results: An event of interest (POAF) has occurred in 66 of the total 240 patients. Number of new POAF cases is the lowest in Group B, 14 (17.5%) compared to 25 (31.25%) new cases in the comparator group, and 27 new cases (33.75%) in group C. Absolute risk reduction was 13.75%, ≈14% less POAF in group B compared to comparator. Relative risk reduction was 56% (RR 0.56, p = 0.04). Number Needed to Treat was 7.27. In group C, 33.75% of patients developed POAF. Absolute risk was insignificantly higher in group C (2.5%, NS) compared to the comparator .The number needed to harm was high, 40. Conclusion: The results of our research show that prophylaxis of POAF with combined therapy BB + Amiodarone was the most efficient one.

AIM: Compare the basic characteristics of patients and to examine the existence of higher rates of perioperative complications (0 - 30 days) in women versus men after carotid endarterectomy (CEA). METHODS: This is a retrospective-prospective study included 270 patients with significant stenosis of carotid in whom CEA was performed, during the period from 2012 to 2017. Patients they were divided: group 1 - 100 female patients, group 2 - 170 male patients. RESULTS: No statistically significant age difference was observed between the two groups, group 1 - 66.01 years (SD 8.42, 46 to 86 years), group 2 - 66.46 years (SD 8.03, 47 to 85 years) (p = 0.659). Risk factors represent a greater prevalence in group 2, but the observed difference is not statistically significant. The average duration of surgery and the time of carotid artery clamping time were longer in group 1: (p = 0.002; p = 0.005). The number of classic endarterectomy with the patch was higher in women (41 (41%) versus 31 (18. 2%), p = 0.005), while the number of bilateral CEAs was not statistically significant. CONCLUSION: The results of this study of this study did not indicate a greater presence of perioperative complications (< 30 days) in women versus male patients after CEA.

Introduction: Carotid endarterectomy (CEA) is a standard treatment for the prevention of stroke and death in patients with significant stenosis of the internal carotid artery. Eversion endarterectomy is warranted in patients with symptoms of cerebral ischemia and the degree of stenosis of 70-99%. The same is suitable for treating a symptomatic carotid artery stenosis with contralateral stenosis (50-70%). Purpose: The aim of this study was to evaluate perioperative complications (ICV, TIA, MI, mortality) in patients treated with carotid eversion endarterectomy with unilateral and bilateral symptomatic stenosis (with bilateral stenosis treated with ACI stenosis ≥70%). Patients and Methods: The study included 139 patients with symptomatic carotid artery stenosis at the Department of Vascular Surgery of the University Clinical Center of Sarajevo in the period from January 2012 to December 2014 year. Given the involvement of ACI stenosis patients were divided into two groups. Group A consisted of 74 patients with bilateral stenosis (surgically treated with ACI stenosis ≥70%, while the degree of stenosis opposite ACI was from 50-70%), and group B of 65 patients with unilateral stenosis ≥70%. Results: Of the 139 patients included in the study, in the group A was 74, of which 46 male (62.2%) and 28 female (37.8%), while in group B were 42 male (64.6%) and 23 female (35.4%) (p = 0.90). The subjects in group A were slightly older 65.9 (± 7.8) compared to group B 64.2 (± 7.7) (p = 0.17). Analysis of risk factors indicating a higher number in Group A compared to group B, but the difference was not statistically significant: 34 smokers (45.9%) versus 36 (55.4%); p = 0:34), patients with hypertension (63 (85.1%) against the 52 (80.0%); p = 0.56), with statin therapy (62 (83.8%) versus 52 (80.0%); p = 0.72), diabetes (18 (24.3%) versus 18 (27.7%); p = 0.79) and with a heart disease (18 (24.3%) versus 7 (10.8%); p = 0.06). Analysis of the frequency of perioperative complications between the groups was not statistically significant: ICV (2/74 versus 3/65; p = 1.00), TIA (2/74 versus 3/65; p = 0.88), one death was recorded in group A, while myocardial infarction (MI) we had in either group. Conclusion: In this study, no statistically about significant differences in the number of perioperative complications (from 0 to 30 days) between the two groups. With this risk is acceptable to perform carotid endarterectomy in a patient in the opposite ACI stenosis of 50-70%.

Cardiologia CROATICA Objectives: The aim of this article is to investigate the relationship between the degree of the common carotid artery (CCA) atherosclerosis and the degree of complexity of the coronary artery disease (CAD) expressed with SYNTAX score. It is known that the existence of the CCA disease indicates with high probability the existence of CAD, but few studies have examined the relationship between CCA ultrasound findings and complexity, not just the presence of CAD. Patients and Methods: We included a total of 106 consecutive patients referred to the BH Heart Center for elective coronary angiography. In order to measure and calculate the mean intima-media thickness (IMT) we performed three measurements in predefined segments of CAA for both carotid arteries, the values are converged, and divided by the number of measurements. Plaque score (PS) was measured on the basis of maximum thickness of plaque in four clearly defined segments of both CCA. The final value of PS score is obtained by adding the thickness of plaques found in all segments of CCA. The complexity of coronary artery lesions is evaluated by using the SYNTAX score. The middle and high SYNTAX scores are associated with an increased risk of cardiac death and major cardiac events. Results: Data collection and statistical analysis is in progress and preliminary results indicate that IMT values and PS score significantly correlate with SYNTAX score >18 (r=.0,64, p 27 (r=.0,79, p<0,01). It is expected that final results will show that there is a significant correlation between the degree of CCA atherosclerosis measured by two methods — IMT and PS, and the degree of complexity of coronary artery lesions. Conclusion: Preliminary results show that carotid ultrasound examination has sufficient sensitivity and specificity in the detection of patients with high risk of significant CAD and it is an argument for broader use of CCA ultrasound for the evaluation of patients who are considered for coronary angiography. Besides, we are going to improve algorithm of patients selection for coronary angiography, so, our limited material and human resources and efforts will be directed towards the treatment of patients i.e. net clinical benefit will be improved.

BACKGROUND there is no epidemiological estimation of the incidence and prevalence of CDin the adult population in Bosnia and Herzegovina(B&H), nor there are reports about the clinical presentation of CDin patients in B&H. AIM to assess the epidemiological and clinical characteristics of CDin the adult population in Tuzla Canton in northeast of Bosnia and Herzegovina. METHODS we retrospectively analyzed all hospital records of both adult inpatients and outpatients evaluated in University Clinical Center Tuzla, with suspected CD and residing in Tuzla Canton of B&H between 1.1.2007 and 31.12.2009. RESULTS during the 3-year period we registered 42 cases of celiac disease (CD) with 31/42 (73.8%) of female and 11/42 (26.2%) of male patients - male to female ratio 1 to 2.82. The average annual crude incidence of CD during the observed period was 2.55/105 population (%95 CI=1.74-3.36). The average crude incidence in men was 1.51/105 and 4.08/105 in women. The average annual standardized incidence during the time period 2007-2009 was 1.89/105 (%95 CI=1.32-2.56). The sum prevalence during the study period was 7.66/105 population. Prevalence among men was 4.53/105 and 12.23/105 among women. CONCLUSIONS The incidence of CD in our region is demonstrating a steep rise and apparently low prevalence in our region is merely a result of poor availability of diagnostics in previous years.

UNLABELLED The number of patients undergoing coronary artery bypass grafting (coronary artery bypass grafting-CABG) older than 70 years is increasing. Cardiac surgeons are investigate applicability of alternative and less invasive methods such as surgery without the use of cardiopulmonary bypass (CPB). The aim of this study was to compare the peri- and postoperative results of CABG in elderly patients operated with and without CPB. PATIENTS AND METHODS The study included subjects older than 70 years, who underwent coronary bypass surgery at the BH Heart Center Tuzla in the period from August 2008 to August 2010, divided into two groups. Group A consisted of 50 patients operated without CPB, group B 50 patients operated with CPB, adjusted by sex, left ventricular ejection fraction values, EuroSCORE, and the number of bypass grafts was made. RESULTS In the group treated without the use CPB there were significantly lower values of the time-duration of mechanical ventilation, length of stay in the Intensive Care Unit (ICU), the amount of postoperative bleeding and blood recovered, the length of hospital stay, levels of serum creatinine, C-reactive protein and creatine kinase MB fraction. CONCLUSION CABG without the use of CPB has a number of advantages over the method with CPB in elderly patients, which is evident from the lower values of renal and inflammatory parameters and markers of myocardial lesion, less time spent on a ventilator, shorter length of stay in the ICU and total hospitalization time, less postoperative bleeding and blood transfusion.

INTRODUCTION Despite the fact that the transperitoneal approach (TP) is most widely accepted approach to the aortic surgery because it is simple, fast, and provides good exposure of the abdominal cavity and vascular structures, lately have been increasingly advocated as an alternative retroperitoneal (RP) approach in order to avoid entering peritoneal sac, achieving lower physiological trauma and faster establishment of gastrointestinal function. OBJECTIVE The aim of this study was to compare the basic peri and postoperative results of TP and RP approaches in the surgical treatment of AIOD. PATIENTS AND METHODS The study included 114 patients with aortoiliac occlusive disease (AIOD) that underwent surgical treatment at the Department of Vascular Surgery, Clinical Center University of Sarajevo from January 2010 until December 2012 year. In view of the surgical technique used subjects were divided into two groups. Group A consisted of 57 patients on who had been used RP approach, and group B 57 subjects with TP used approach. RESULTS In patients from group A were observed significantly lower values: the length of operation (201.66 +/- 43.9 minute vs. 267.36 +/- 47.57 min, p < 0.001), amount of postoperative drainage (56.14 +/- 55.5 ml versus 130.71 +/- 92.34 ml, p < 0.001), length of stay in the intensive care unit (ICU) (1.10 +/- 0.36 days versus 2.46 +/- 1.25 days, p < 0.001), time required for the restoration of gastrointestinal motility (4.38 +/- 5.59 versus 1.05 days +/- 1.19 days, p < 0.001), length of hospitalization (9.26 +/- 1, 95 +/- 11 days versus 1.96 days, p < 0.001), costs of hospitalization (2394.98 +/- BAM 346.67 versus 2933.72 +/- 428.10 BAM, p < 0.001). Analysis of the incidence of postoperative complications (8 vs. 7 complication complications, p > 0.05) and mortality (3 versus 3, p > 0.05) showed no statistically significant difference between the analyzed groups. CONCLUSION RP approach in vascular reconstructive surgery in AIOD offers better postoperative results when compared to TP approach.

Jehovah's witnesses (JW) belong to a religious group refusing to accept blood transfusion Surgical treatment remains a challenge in this subset of patients. From 1945, JW introduced a ban on accepting blood transfusions, even in life-threatening situations while autologous blood must also be refused if it is predeposited-thus excluding preoperative autodonation. However, autologous blood is acceptable if it is not separated from the patients' circulation at any time. The invasive nature of coronary artery bypass grafting (CABG), the associated decrease of body temperature and the use of cardiopulmonary bypass (CPB) are major reasons for increased blood loss and high incidence for blood transfusions during and after this procedures. Allogenic blood transfusions are often given and considered necessary in such operations, in spite of increased mortality, morbidity and major adverse outcomes resulting from transfusion. Reduction in the use of blood products should therefore be a general desire for every patient due to the associated risk factors. The evolution of less invasive cardiac surgical approaches, such as CABG without CPB (OPCAB) may contribute to a further reduction of blood transfusion and although these minimally invasive techniques may benefit every patient, they might be particularly valuable for JW. In this report, we present our initial experience in JW patient undergoing OPCAB and the way to use patient blood management for improved surgical outcome in such patient.