The Second Round of a Population-Based Seroprevalence Study of Anti-SARS-CoV-2 Antibodies and COVID-19 Vaccination Assessment in the Republika Srpska, Bosnia and Herzegovina.

Introduction: The aim of the study was to assess the seroprevalence of SARS-CoV-2 in the Republika Srpska, Bosnia and Herzegovina, after five waves of COVID-19 and 1 year after introduction of vaccination to better understand the true extent of the COVID-19 pandemic in the population of the Republika Srpska and role of vaccination in achieving herd immunity.

Methods: The population-based study was conducted from December 2021 to February 2022 in a group of 4463 individuals in the Republika Srpska. Total anti-SARS-CoV-2 antibodies were determined in serum specimens using the Wantai total antibody ELISA assay.

The comparison of SARS-CoV-2 antibody levels in medical personnel induced by different types of vaccines compared to the natural infection.

Introduction: During the last two and a half years, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has spread around the world. Most of the SARS-CoV-2 vaccines are designed to produce anti-SARS-CoV-2 immunoglobulin G (IgG) against the viral S-glycoprotein. The aim of this study was to measure the anti-S antibody titres among the medical personnel who had been fully vaccinated with different types of vaccines, and to compare them with those who were COVID-19 convalescents.

[Uretero-iliac artery fistula: endovascular treatment. Complications of prolonged use of double J endoprosthesis].

The authors report a case of fistula between the external iliac artery and the left ureter, in a patient with a double J stent for several years to treat iatrogenic ureteric stenosis. The diagnosis was suggested by the patient's history and the presence of bright haematuria from the left ureteric meatus. Interventional radiology established the positive diagnosis and allowed treatment by placement of a covered prosthesis in the external iliac artery.

[Transhepatic fine needle cholangiography. Retrospective study of 60 patients].

The purpose of this study was to present the retrospective results of 60 percutaneous transhepatic cholangiograms performed with a Chiba needle between 1978 and 1980 in a general radiology department. The puncture technique is now well established and the use of the Chiba needle considerably diminished the risk of local complications. The incidence of local complications is 5%.

[Value of cineradiography in the study of Budd-Chiari syndrome. Value of various angiographic technics. Apropos of 8 cases].

Eight cases of surgically proven Budd Chiari disease, have been explored pre- operatively by cine-angiography. This procedure is very safe and simple, and allows a dynamic study of the intra- and extra-hepatic pathways. The authors are reviewing the different modalities of radiologic evaluation of Budd-Chiari disease, including inferior vena cava phlebography, opacification of supra-hepatics veins, and coeliac arteriography.

[Angioplasty of the arteries of the extremities. Early and mid-term results (up to 3 years) in 492 cases].

Results of iliac, femoral and/or iliac artery percutaneous transluminal angioplasty (P.T.A.

[Mediastinal bronchogenic cysts in adults. Cardiovascular symptomatology (author's transl)].

The authors describe seven patients operated upon for mediastinal bronchogenic cysts and emphasize the problems of differential diagnosis from cardiac and vascular affections: enlarged left auricle and aneurysm of the thoracic aorta. They review the published literature on atypical bronchogenic cysts with cardiac or vascular symptoms, and the diagnostic problems they raise in adults.

[Concomitant Prinzmetal angina and coronary angina. Angiographic study in 13 patients (author's transl)].

Is coronary spasm the explanation for the paroxysmal myocardial ischaemia of Prinzmetal angina? Although considered adventurous two or three years ago, this hypothesis has been supported by the publication of approximately 15 cases in which the cause and effect relationship seemed to be proven by spasm seen on coronary arteriography at the same time as a typical attack. The authors report 13 cases of this type (the first of which was published in 1972). Spasm occurred in a normal coronary system in 3 cases, whilst in 2 cases there were only non-stenotic plaques of atheroma.

[Value of phosphohexose isomerase (PHI) determination in myocardial infarct].

The biochemical diagnosis of myocardial infarction is based mainly on the enzyme levels of glutamino-oxalic transaminase (SGOT), lactic dehydrogenase (LDH), and creatine-phosphokinase (CPK). The authors have compared the level of phospho-hexo-isomerase (PHI) with the levels of the three other enzymes mentioned above in 20 cases of recent myocardial necrosis. From their study it appears that PHI activity follows essentially the same pattern as that of CPK, and has no particular advantage; indeed, it is limited by its later appearance and its lower maximum level compared with CPK.