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Biomedical subjects

R Ilić

Publications and source records attributed to R Ilić.

At least 19 recordsLinked to original sources
PubMed2006

Utilization of municipal solid waste bottom ash and recycled aggregate in concrete.

In the combustion process of municipal solid waste (MSW), bottom ash (BA) represents the major portion of the solid residue. Since BA is composed of oxides, especially SiO(2) and CaO, the feasibility of its application in concrete as a substitute for cement was tested. It was found that at the age of 28 days, the flexural and compressive strengths of the binder linearly decrease at the rate of 0.03 and 0.02 MPa per wt% of BA in the binder, respectively. According to the results it may be recommended to replace up to 15 wt% of cement by BA and to use such binder where a low strength of concrete elements is required. Furthermore, the aggregate used for low strength concrete need not be of a very good quality. Therefore, gravel aggregate was partially replaced by recycled aggregate (RA). Consistency measured by slump was significantly reduced (>50%) when BA or/and RA were introduced into the mixture. However, concrete density and compressive strength were not affected and were approximately 2300 kg/m(3) and approximately 40 MPa, respectively.

Calcium Compounds↗
PubMed1996

Enteroaggregative Escherichia coli associated with an outbreak of diarrhoea in a neonatal nursery ward.

Over a 9-day period in February 1995, 16 newborn babies (age range 2-11 days) and 3 infants (24, 47 and 180 days of age) in a neonatal nursery ward developed diarrhoea accompanied by pyrexia and weight loss. Known enteropathogens were not detected in their stools but Escherichia coli displaying aggregative adherence to HEp-2 cells (enteroaggregative E. coli) were found in 12 (63%) ill infants and in none of 5 well neonates (P = 0.02). The illness lasted 3-9 days (mean 5.2) in 16 babies, whereas in 3 neonates it showed a protracted course of 18-20 days. The source of infection and the mode of transmission remained unclear. The outbreak isolates manifested properties common in this new group of diarrhoeagenic E. coli: mannose-resistant haemagglutination, haemolysis on blood agar, and clump formation in liquid culture medium. They belonged to the O4 E. coli serogroup and expressed multiple antibiotic resistance.

Bacterial Adhesion↗
PubMed1975

Drainage of the subretinal fluid and injection of saline solution into the vitreous body.

In a group of 250 cases operated upon for retinal detachment, drainage of the subretinal fluid was carried out in 96%. Since in 54 cases, i.e. 22%, a large quantity of subretinal fluid was evacuated, saline solution was injected into the vitreous. The following complications due to drainage were noted: intraocular haemorrhages (16%), incarceration of the retina (1%) and temporary iridocyclitis (2%). None of these complications prevented reattachment. In 54 cases in which injection of saline solution into the vitreous was carried out, we have noted: temporary occlusion of the central retinal artery (5 cases), temporary cloudiness in the vitreous body (2 cases) and traumatic cataract (1 case). The injection of saline solution into the vitreous was well tolerated. Although the complications due to drainage are rather numerous (intraocular infection and haemorrhages, incarceration of retina, secondary retinal hole, glial proliferation in the vitreous, dehiscence at the place of drainage), these complications rarely occur if the drainage is carried out in a proper manner. Despite the fact that drainage and injection of saline solution into the vitreous do not cause more severe complications, however, we consider that the method of avoiding drainage and internal tamponage, whenever it is possible, represents a fully justified trend.

Drainage↗
PubMedDate not supplied

[Coronarography in the diagnosis of left atrial thrombosis].

Thrombosis of left atrium is frequent in the patients with mitral defect. Systemic embolism that generates by separated thrombus parts is a possible complication during the disease. Echocardiography is routinely used in the diagnosis of left atrial thrombosis. On the basis of angiographic experience, we have set the hypothesis: coronary angiography has a great sensitivity, but small specificity in the diagnosis of left atrial thrombosis. The presence of thrombus in left atrium was analyzed in 60 operated patients with mitral valve disease. During the surgery, thrombus was found in 13, and not found in 47 patients. Coronary angiography was preoperatively performed in all patients. In 9 out of 13 patients with intraoperatively observed left atrial thrombus, thrombus was also found by angiography. In 47 patients thrombus was found neither intraoperatively, and in 45 nor by angiography. The sensitivity of angiography in the diagnosis of left atrial thrombosis is 69%, specificity is 97%, and the accuracy is 90%. Positive index of anticipation is 81%, and negative index of anticipation is 91%.

Coronary Angiography↗
PubMedDate not supplied

[Successful surgical treatment of a massive pulmonary embolism in the organized thromboembolic phase].

A patient, male, aged 36, clinically presented as an unstable angina pectoris following myocardial infarction, who came from general hospital of Banja Luka for further examination is presented. According to the medical report, he was treated for acute myocardial infarction in 1994 at Banja Luka's general hospital, when he was resusciated due to of cardiac arrest. The anginous pain was still present regardless of prescribed therapy. Following the clinical examination at the Military Medical Academy we have established a diagnosis of thromboembolism of the main pulmonary artery with a high pressure in the right ventricle. He underwent surgery under the extracorporeal circulation, when an organized old thrombus the main pulmonary artery and partially in arterial branches. The main pulmonary artery was almost completely obliterated. Thrombectomy was done. Following the operation, the patient was in a good condition and the repeated echocardiographic examinations showed no signs of recurrent thrombosis while the pressure in the right ventricle was significantly decreased. Afterwards, he was treated by heparine and oral anticoagulants and then by antiagregants. This case is very instructive because the massive pulmonary thromboembolism which was wrongly recognized and treated as an acute myocardial infarction.

Adult↗
PubMedDate not supplied

[Successful surgical removal of a cardiac myxoma from the left ventricular outflow tract].

The precondition for successful, exclusively surgical treatment in the extracorporeal circulation, is the precise diagnosis of heart myxoma, particularly in rare locations such as the left ventricle. We present a case of myxoma in the outflow tract of the left ventricle as the exceptionally rare location, successfully diagnosed and surgically treated at the Clinic for Cardiac and Thoracic Surgery of the Military Medical Academy. A female patient, aged 46 years, was sent from another hospital with misdiagnosis of idiopathic hypertrophic subaortic stenosis. The patient was successfully operated after transthoracic and transesophageal echocardiography as the main diagnostic procedures. Myxoma that completely obstructed the aortic opening if pulled, was completely removed through aortic valve in the extracorporeal circulation. Its pedicle was arising from the ventricular side of the great mitral cusp. Postoperative course was uneventful and the patient was released from the hospital on the tenth postoperative day.

Echocardiography↗
PubMedDate not supplied

[Acute renal insufficiency in patients after surgical treatment of dissecting aortic aneurysm].

The retrospective analysis was performed of 26 patients (5 women and 21 men), mean age of 47.04 years, surgically treated for aortic dissecting aneurysm (ADA) at the Clinic of Cardiosurgery of the M.M.A. in the period 1988-1990. In the postoperative course acute renal insufficiency (ARI) has developed in 13 (50%) patients: of milder form in 5 (38.4%), medium in 6 (46.1%) and advanced form in 2 (15.3%) patients. The most common precipitating factor in development of ARI has been arterial hypotension (92.3%). In all patients including the patients treated by hemodialysis, it has come to complete recovery of renal function.

Acute Kidney Injury↗
PubMedDate not supplied

[Immediate results of surgical treatment of intracardiac myxomas in 45 patients].

Between 1961 and 1992, 45 patients with intracardiac myxomas localised in the left ventricle--40 (89%) and in the right ventricle--5 (11%) were operated on. There were 27 women and 18 men, aged 15-63, mean age, 46.5 years. Three patients were asymptomatic while in other dominated different degree of malfunction of the corresponding atrioventricular valve, mainly with dominant symptoms and signs of stenosis. In 5 patients (11%) myxoma of the left atrium was in question together with systemic embolization. The diagnosis was established both by invasive and noninvasive methods and the method of choice, very reliable and easy, has proved to be echocardiography. All patients were operated on with the use of the total cardiopulmonary bypass and induced heart arrest. The histologic verification of all excised myxomas was performed. Three early deaths occurred (6.6%), while in other patients no postoperative complications developed. It has been concluded that echocardiography is very safe diagnostic procedure and results of surgical treatment are very good.

Adolescent↗
PubMedDate not supplied

[Infections of the sternum after cardiac surgery].

Methods of treatment of suppurative mediastinitis in cardiosurgical operations applied at the clinic are analysed. These methods are: debridment with closure of the sternum with irrigation of the substernal space, debridment with bandage of open wound and healing per secundam, debridment with bandage of open wound and its closure by myocutaneous layers. It has been concluded that these infections are very complex etiopathogenetically because of which it is very important to know all relevant risk factors aiming to prevent development of this complication in cardiosurgical operations. Its early recognition is necessary.

Adult↗