Faculty of Medicine

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The role of pre-existing renal dysfunction on in-hospital morbidity and mortality in patients with acute coronary syndrome
(Oxford University Press (OUP), 2024-04)
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Bogevska, I
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Dobjani, A
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Shehu, E
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Taravari, H
Introduction The baseline renal function is an important predictor for the prognosis of patients with acute coronary syndrome (ACS). The aim of our study was to analyse the impact of pre-existing renal failure (RF) and the risk profile of patients with ACS on the development of in-hospital morbidity and mortality. Materials and methods This was a single-center cross-sectional cohort study on 2702 patients with ACS. The main exclusion criterion was pre-existing left ventricular (LV) dysfunction. Demographical and clinical characteristics, biochemical parameters, the anatomical distribution of coronary artery disease, and the final outcomes were analysed according to presence of RF at the moment of the index event. The estimated glomerular filtration rate (eGFR) was calculated by the Modification of Diet in Renal Disease Study Group Equation (MDRD), where patients with eGFR<60 ml/min/1.73 m2 had moderate to severe renal dysfunction. Results 777 (22.3%) out of 2702 patients had eGFR <60 ml/min at the moment of the index event. These patients were predominantly female, 34.1% (333) vs.17.7% (444), p=0.0004,OR 1.921(95%CI 1.701-2.168);older (70.0±9.7vs.60.5±10.7;p <0.000). They had significantly higher values of cardiac troponin (p=0.007), stress glycemia (p=0.000019), glycated hemoglobin (p=0.000012), and WBC (p=0.00001), meaning the extent of myocardial injury was bigger, with a more activated neuro-hormonal and inflammatory response in the conditions of the notably widespread anatomical distribution of CAD. However, patients with significantly reduced eGFR were less likely to be offered coronary angiography and PCI treatment, OR 0.524 (95%CI 0.434–0.632),p <0.000. As expected, anemia predominated in these patients (RBC 4.88±0.75 vs 4.53±0.58, p=0.000001; OR 1.27 (95% CI 1.09-1.48), and Hgb 143.81±16.69 vs 132.03±21.34, p=0.00001). They had a significantly lower level of sodium (p=0.008) and a higher level of potassium (p=0.00003). Interestingly, patients with eGFR <60 ml/min had lower lipoprotein levels. In-hospital mortality rate was 4.2%, however, significantly higher in reduced eGFR group (12% vs 1.9%, OR 6.9 (95% CI 4.9–9.8), p <0.00004). These patients were more likely to develop acute kidney injury [25.7% vs. 1.3%, OR 1.6 (95% CI 1.3-1.9, p = 0.000021)], pulmonary oedema [8% vs. 1.8%, OR 1.12 (95% CI 1.02-1.23, p = 0.000021), and cardiogenic shock [19.5% vs. 2.6%, OR 1.22 (95% CI 1.2-1.4), p = 0.00023]. Independent variables associated with RF were: advanced age, female gender, extracardiac ASCVD, previous CVI, previous RAAS treatment, stress glycemia, triglyceride, cholesterol, LDL-C, Hgb, WBC, and potassium level. Conclusion Patients with reduced eGFR (<60 ml/min) have a very specific risk profile, as identified in our study, and reduced eGFR is a major contributor to the prognosis of ACS, highly responsible for in-hospital morbidity and mortality.
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Left ventricular systolic function in patients with acute coronary syndrome-risk profile
(Oxford University Press (OUP), 2024-04)
Dobjani, A
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Bogevska Naumovska, I
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Shehu, E
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Taravari, H
Introductions and objectives Left ventricular (LV) systolic dysfunction is one of the most important determinants of long-term outcome in acute coronary syndrome (ACS). Aim To determine the impact of the patient’s risk profile on the LV systolic function. Methods A single-center cross-sectional cohort study that included 3093 patients with ACS without pre-existing LV dysfunction. The comparison was performed between patients who did or did not develop a reduction in LV systolic function during the index event (<50%/≥50%), analyzing patients’ demographic, clinical, biochemical data, LV functional data, and anatomical distribution of the coronary artery disease (CAD). Result 1369 patients out of 3093 developed LV systolic dysfunction (44.3%). They were predominantly males 75.1% (1028), p=0.002; older (63.39±11.04 vs 61.21±11.12, p<0.00000); had higher level of cardiac troponin (p=0.00002), higher stress glycemia (9.2±5.3; p=0.0000001), HbA1c (6.9±1.8, p=0.000003), WBC (11.7±4.1, p=0.00001), blood urea nitrogen (BUN) (6.8±3.7, p=0.000003), and creatinine (93.2±45.1 p=0.000167), and had anemia (OR 0.35 (CI 0.29–41, p=0.000012). They had more severe CAD (SINTAX score 16.8±8.4 p=0.000012). Patients with preserved LV systolic function were predominantly females (29.7%, OR 1.1 95% CI 1.0-1.2), p = 0.002), younger (p<0.00000), and severely metabolically burdened (hypothyreosis (2.7%, OR 1.28 95% CI 0.93-1.76, p=0.052), higher levels of triglycerides (2.2±1.7 vs 1.9±1.5, p = 0.001), cholesterol (5.3±1.4 vs 5.2±1.4, p = 0.002), non-HDL-C (4.1±1.5 vs 3.9±1.3, p=0.006), however less likely to have pre-existing DM (OR 0.8 (CI 0.78–0.92), p=0.000094). They were more often NSTEMI [851 (49.4%), p = 0.000012]. Independent variables associated with a reduction in LV function were: advanced age, male gender, previous DM and anemia, stress glycemia, WBC, creatinine, and BUN. Conclusion Patients who developed reduced LV function had a very specific risk profile with bigger neuro-hormonal activation and inflammation, higher degree of myocardial damage, and worse renal function, whereas those with preserved LV systolic function after ACS were younger, predominantly females, more severely metabolically burdened, more often with NSTEMI and without LAD involvement.
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Acute kidney injury in patients with acute coronary syndrome - risk profile
(Oxford University Press (OUP), 2024-04)
Bogevska-Naumovska, I
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Dobjani, A
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Shehu, E
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Taravari, H
Introduction Acute kidney injury (AKI) is a strong predictor of in-hospital adverse outcomes, which is a common complication of acute coronary syndrome (ACS). Aim To analyse the risk profile of patients treated for acute coronary syndrome who develop acute kidney injury. Material and methods This is a single-centre cross-sectional cohort study on 3507 patients with ACS. The main exclusion criteria was left ventricular dysfunction. Demographical and clinical characteristics, biochemical parameters, the anatomical distribution of coronary artery disease (CAD) and the final outcomes were analysed according to RF at the moment of the indexed event. The estimated glomerular filtration rate (eGFR) was calculated by the Modification of Diet in Renal Disease Study Group Equation (MDRD), where patients with eGFR<60ml/min 1.73 m2 had moderate to severe renal dysfunction. Results 74 (2.1%) out of 3507 patients developed acute kidney injury (AKI). Those were predominantly males [62.2% (46), OR 1.55 (95% CI 0.98-2.47), p=0.044], significantly older (68.95±9.9. vs 62.5±11.2; p <0.000001), more often with preexisting HBI (OR 4.72 (95% CI 2.20-10.30, p=0.000070), HTA(OR 1.89 95%CI 1.11-3.23, p=0.020), diabetes(OR 1.88 95%CI 1.18-3.00, p=0.008), cancer(OR 2.92 95%CI 1.15-7.44, p=0.024), anaemia (beta -.104, p=0.000032), while less often were smokers (OR 0.51, 95% CI 0.31-0.83, p=0.006). They had statistically significantly higher values of cardiac troponin (beta .075, p=0.000011), stress glycemia (beta .104, p=0. 0.000019), and WBC (beta .074, p=0.000013), higher BUN (beta .325, p=0.000011), creatinine (beta .268, p=0.000016), and lower eGFR at admission (beta -.211, p=0.000032), lower sodium (beta -.101, p=0.000012), and higher potassium levels (beta .087, p=0.0008). Vice versa, total cholesterol, LDL-C and non-HDL-C (beta -.051, p=0.002, -.049, p=0.003, and -.047, p=0.005 respectively), were lower, the same for Hgb (beta -.107, p=0.000021). It is worth mentioning that 18(11.5%), of AKI patients were not PCI treated. Independent variables associated with AKI were: preexisting renal failure, cancer, and WBC. Outcomes: AKI carried a significantly higher in-hospital mortality rate (4.2% in general population, and 21.1% of all deaths were AKI patients, OR 23.01 (95% CI 14.04-47.03, p=0.00002)]. It was significantly associated with the development of pulmonary oedema (OR 17.94, 95% CI 9.67-33.26, p=0.000012), cardiogenic shock (OR 21.59, 95% CI 12.79-36.47, p=0.00006), any type of dysrhythmia (OR 1.83, 95%CI 1.53-2.18, p=0.0001), and any type of bleeding complications (OR 1.61, 95%CI 1.14-2.27, p=0.007). Conclusion AKI is a relatively rare complication in ACS patients, however, it is associated with significant in-hospital morbidity and mortality. Patients with pre-existing renal failure, and cancer, as well as patients who developed more pronounced inflammatory reactions, were more prone to AKI.
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А rare case of left ventricular hypertrophy and non-compaction cardiomyopathy in an adult: diagnostic approach
(Macedonian Society of Cardiology, 2021-03)
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Zafirovska, P
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Risteski, D
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Left ventricular non-compaction cardiomyopathy (LVNC) is a rare form of primary genetic cardiomyopathy which is characterized by prominent trabeculations and intertrabecular recesses that communicate with the cavity of the left ventricle. The prevalence is between 0.014%-1.3% in the general population. LVNC is associated with different genetic mutations and may have a genetic overlap with the phenotype of other cardiomyopathies, including hypertrophic cardiomyopathy (HCM). In this case report we present a 26-year-old female patient presenting to emergency room with bradycardia and syncope. The transthoracic echocardiography revealed hypertrophy and trabeculations with prominent recesses of the left ventricle. Cardiovascular magnetic resonance imaging (MRI) was performed to confirm the diagnosis of LVNC. The genetic analysis showed mutation of PRKAG2 gene indicating hypertrophic cardiomyopathy with conduction disturbance. In the last years, LVCN and HCM are diagnosed more frequently due to improvements in imaging methods. Although there are many diagnostic tools including contrast ventriculography, CT and MRI, echocardiography is the main imaging method used for diagnostic evaluation of LVNC and HCM. Key words: left ventricular non-compaction cardiomyopathy, hypertrophic cardiomyopathy, echocardiography, cardiovascular magnetic resonance imaging
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Case Report: Secondary Hypertension Associated with Aortic Coarctation in a 21-year-old Female Patient
(2022)
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Zafirovska, P
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Lazarevska, M
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Milev, I
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Grueva, E
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Sağ Atriyal Yerleşimli Kardiyak Lipom
(2004)
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Andova, V
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Kirilmaz, A
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Effect of nephrology referral on the initiation of haemodyalisis and mortality in ESRD patients
(Macedonian Academy of Sciences and Arts, 2007-12)
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Polenakovic, M
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Gelev, S
Late nephrology referral of patients with chronic kidney disease (CKD) has been suggested as increasing mortality after the initiation of dialysis. The aim of this study was to assess the impact of nephrology referral on the initiation of haemodyalisis (HD) and mortality during HD treatment in end-stage renal disease (ESRD) patients who have died in our institution over a five-year period. We studied data from all 117 patients on HD treatment in our institution who died (after 90 days of HD treatment) in the period between 01.01. 2002 and 31.12. 2006. Early (ER) and late referral (LR) were defined by the time of follow-up by a nephrologist greater than or less than 6 months, respectively, before the initiation of haemodialysis. Out of a total of 117 patients, 37.6% (44 patients) started HD in the ER group and 62.4% (73 patients) in the LR group. At the start of HD, LR patients were older, had a higher proportion of temporary catheters and had a significantly lower levels of haemoglobin and diuresis. Creatinine clearance was less in the LR (7.67 +/- 3.86 ml/min/1.73 m2) vs. the ER group (8.70 +/- 3.62 ml/min/1.73 m2), but not significantly different. Cardiovascular disease (CVD), defined by a history of myocardial infarction, cerebral vascular disease, peripheral arteriopathy, and/or heart failure, was also significantly more common among LR patients compared to ER (56%; 27%, p = 0.002). During the haemodyalisis treatment, the LR group had significantly lower levels of haemoglobin and haematocrit. CVD accounted for about 64% of deaths observed in the LR group. According to echocardiography data, there were no significant differences in the left ventricular mass index (LVMI) between the LR and ER groups at the time of dialysis initiation, but during haemodialysis treatment the LR group had significantly greater LVMI than the ER group (232,96 +/- 92,48 g/m2 vs.184,09 +/- 51,74 g/m2; p = 0,031). The time until death in months during dialysis treatment was significantly different between the LR and ER group, (69.51 +/- 64.03 vs.113.27 +/- 89.03, p = 0.0025). LR patients experienced a greater degree of anaemia and a high prevalence of CVD at the time of dialysis initiation. Our data suggest that the anaemia, CV damage and progression of left ventricular hypertrophy (LVH) in the LR patients during haemodialysis treatment are associated with poor survival on haemodialysis.
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CORONARY ARTERY BYPASS GRAFTING PORTENDS DECREASED RIGHT VENTRICULAR FUNCTION
(Macedonian Association od Anatomists, 2020-07-03)
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Sokarovski, M
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Lazovski, N
Decreased right ventricular (RV) function is a frequently observed phenomenon after coronary artery bypass grafting (CABG) that often implicated poor long term prognosis. The aim of this study was to assess the existence of RV dysfunction 4 to 6 months after CABG using echocardiographic Assessment of tricuspid annular plane systolic motion (TAPSE) and RV free wall longitudinal strain (RVFWS) using speckle tracking. During the period from October 2017 to October 2018, forty-seven consecutive patients undergoing CABG were enrolled in this prospective study. 2D transthoracic echocardiography was performed within one week before CABG as well as 4 to 6 months after surgery. All measurements were made by a single experienced investigator.4-6 months after CABG right atrial (RA)and RV dimensions were significantly increased although the mean value stayed in reference margins. TAPSE was significantly reduced (p=0.0001) as well as RVFWS (p=0.015) which showed fewer negative results implicating decrement in RV function after surgery. Patients with abnormal postoperative RVFWS had insignificantly larger preoperative end-diastolic and end-systolic volume index as well as worse left ventricular (LV)function manifested with lower LV ejection fraction (LVEF), lower systolic volume index (SVI) and more positive LV global longitudinal strain.We could not find any significant difference among preoperative values of RA and RV dimension as well as TAPSE and PAPs between patients with normal vs. abnormal postoperative RVFWS. Our study showed depressed RV function 4-6 months after CABG. We suggest that RV free wall strain could be obtained and should be applied along with other conventional markers in the assessment of RV function after CABG.
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Changes of left ventricular systolic function in patients undergoing coronary artery bypass grafting
(Scientific Foundation SPIROSKI, 2019)
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Sokarovski M
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Ristevski P
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AIM: This prospective study was designed to evaluate the changes in left ventricular (LV) systolic function after coronary artery bypass grafting (CABG) in patients with both normal and abnormal pre-operative systolic function. METHODS: During the period from October 2017 to October 2018, forty-seven consecutive patients undergoing CABG were enrolled in this prospective study. Transthoracic echocardiography was performed within 1 week before CABG as well as 4 to 6 months after surgery. All measurements were made by a single experienced investigator. RESULTS: While the mean LV ejection fraction (LVEF) showed neither improvement nor significant reduction in the whole group of patients following CABG (from 54.21 􏰪 15.36 to 53.66 􏰪 11.56%, p = 0.677), significant improvement in LVEF was detected in the subgroup of patients with pre-operative LV dysfunction (from 40.05 􏰪 8.65 to 45.85 􏰪 9.04%, p = 0.008). On the other hand, there was a significant decline in LEFT in the subgroup of patients with normal pre-operative LEFT (from 64.70 􏰪 9.72 to 59.44 􏰪 9.75%, p = 0.008). As for the other parameters of systolic function, significant decrease in LV end-diastolic volume index (LVEDVI) (p = 0.001), LV end-systolic volume index (LVESVI) (p = 0.0001), wall motion score index (WMSI) (p = 0.013) and LVmass index in male patients (p = 0.011) was shown only in patients with decreased LVEF after CABG. Patients with improved postoperative LVEF (53.2% of all patients) had significantly lower baseline LVEF (p = 0.0001), higher LVESVI (0.009) and higher WMSI (p = 0.006) vs patients with worsened postoperative LVEF (38.3% of all patients). Postoperative improvement of LVEF was correlated with stabile angina, lack of preoperative myocardial infarction and smoking, higher baseline WMSI, higher LV internal diameters and indexed volumes in diastole and systole and lower baseline LVEF. In stepwise linear regression analysis the value of baseline LVEF appeared as independent predictor of improved LVEF after CABG (B = 0,836%; 95% CI 0.655-1.017; p = 0.0001). CONCLUSION: Our study showed that LVEF, internal baseline diameters and indexed volumes of LV in diastole and systole are important determinants of postoperative change in LVEF. In patients with preoperative depressed myocardial function, there is an improvement in systolic function, whereas in patients with preserved preoperative myocardial function, the decline in postoperative LVEF was detected.

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