Biomedical subjects
Publications and source records attributed to D Stamenković.
A 46- year old patient without previous history of general anaesthesia was admitted for urgent Hartman's procedure. The suspected tumor of sigmoid colon caused the obstructive ileus with extreme abdominal distension and threatened colon perforation. After induction of anaesthesia and adequate muscle relaxation it appeared that endotrh ileus because of possible regurgitation and aspiration.
We report case of 50-year-old female with mediastinitis due to tonsillitis. Mediastinitis was diagnosed after five days according to clinical signs, radiological examination and computerized tomography scan. The patient underwent mediastinal drainage through a cervical incision and bilateral thoracic drainage because of bilateral pleural empyema. Initial broad-spectrum antibiotic therapy was replaced with imipenem, amicacin and vancomycin after the bacteriological investigation revealed susceptibility to isolated acinetobacter spp, staphylococcus spp coagulase-negative, enterococcus and staphylococcus. After 46 days of hospitalization patient went home.
This case report discribes the treatment of 67-year-old Jehovah's Witness with severe anemia and gastrointestinal haemorrhage from gastric leiomyoma and peptic ulcer. Minimal invasive surgery with meticulous hemostasis, controlled hypotension, hyperoxic normovolemia and normotermia were main principles. Minimal blood samples for necessary laboratory parameters and noninvasive onitoring were ways to decrease iatrogenic blood loss. The operative and postoperative period were uneventful and well tolerated. The patient was discharged home after eighteen days and well in follow up period.
The eversional stripping and esophageal mucosal stripping methods as standard procedures in the preserving esophageal surgery are presented in this paper. These procedures have indication limit and results are excellent in selected risk dependent group of patients. This review describes technique, indications and advantages of these techniques in comparision with conventional finger esophageal dissection.
Mediastinitis is serious, life-threating infection. Desceding necrotizing mediastinitis is a form of mediastinitis with mortality rate of 40%. It develops as a complication of odontogenic and deep cervical infection. Early diagnosis and therapy are the most important issues. Computed tomographic scan is suggested if odontogenic infection is complicated with dyspnea. Mediastinitis is usually polymicrobial infection. Transcervical mediastinal drainage and intravenous antibiotic therapy are suggested. In some [figure: see text] cases aggressive mediastinal drainage by thoracotomy approach is performed.
The effects of intraoperative epidural administration of ketamine added to bupivacaine were compared with fentanyl added to bupivacaine in patients undergoing total gastrectomy. Prospective, randomized, double blind study was designed to compare: group F: 20 patients (pts) receiving 20 ml of 0.125% bupivacaine and 50 ug of fentanyl and group K: 20 pts in whom 20 ml of 0.125% bupivacaine was combined with 50 mg of ketamine. Pts received an epidural injection through peridural catheter introduced through either T7-8 or T8-9 interspinous space. Non invasive arterial blood pressure, heart rate and ECG were recorded every 5 mins. We measured supplementary fentanyl requirement, ephedrine consumption, first postoperative complain on pain, tracheal extubation time. The groups were comparable with regard to patients characteristics, operation and anaesthesia related factors. There were no difference between groups in mean intraoperative fentanyl requirements (F vs. K = 118.5 (122.5) ug vs. 122.5(122.5)ug) (p n > 0.05), in the duration of epidural pain relief (F vs. K = 393.72 (98.75)min vs.403.63 (111.41)min, in the tracheal extubation time (F vs.K = 52.31 (50.4) vs.46.75 (48.35) min), postoperative sedation score (F vs.K = 1.26 (0.73) vs.1.11 (0.32)) (p > 0.05). Significantly higher systolic blood pressure was measured in group K comparing with group F in 20, 75, 105, 120, 150 min (p > 0.05). Statistically significant more ephedrine was applied in F group (F vs.K = 0.88(1.76)ml vs.0.05(0.23)ml) (p > 0.05). There were no statistically significant differences between groups in heart rate during the operation. None of the pts complained of bad dreams or awakeness during operation. Both fentanyl and ketamine added to bupivacaine and given as a bolus provided good intraoperative analgesia in combination with general anaesthesia, minimal sensorimotor disturbance and early tracheal extubation. In our study fentanyl added to bupivacaine caused higher incidence of hypotension than ketamine added to bupivacaine.
Modern understanding of the retention mechanism of partial denture assumes that the path of insertion and the path of displacement of denture form a definite angle. The denture is possible to insert in a given direction only after forming guide planes which, in the same time, possible take part in retention of denture. The aim of this work was to test the hypothesis that the preparation of guide planes and bending of models in the surveyor brings, the rigid parts of framework to increase the ability of denture to be kept on supporting tissue. The research was performed on the frameworks of denture which were of same design and models with and without preparation guide planes. Total of 60 framework removings from the vertical direction were made under the different conditions of the measurement, using universal electronic machines.
When the guide planes are formed on the proximal surfaces of abutment teeth the part of enamel is removed. Thickness of enamel and inclination of tooth are the factors that limit the possible tooth reduction. In this report anatomical and histological characteristics of proximal surfaces of the abutment teeth are analysed. Thickness of the enamel has been measured using the optical microscope for 280 prepared teeth. Measurements were performed on four zones of tooth's proximal surfaces, on the different distances from the top of enamel edge. Undercut of 420 proximal surfaces of tooth have been determined by micro-analyser with accuracy of 0.05 mm. By comparing the mean values of enamel thickness, in occlusal thirds, and undercut of proximal surfaces, it is possible to conclude that the formed guide plane remains in the enamel even after the removing of all natural undercuts.
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The following hypothesis was made: different conditions of preparation and heat treatment of refractory mold change its physical and mechanical characteristics which is of great importance for the precision of casting of Co, Cr, Mo alloys. To prove this hypothesis measurements of setting time, setting and thermal expansion and transverse strength were performed regarding the relationship between the powder and the liquid of investment. The research was carried out on "Politerm C", "Rema Exakt" and "Widerit" investments. The obtained results proved the hypothesis that different conditions during the preparation of refractory mold had a certain influence on the quality of casting of Co, Cr, Mo alloys. The domestic investment was approximately of the same quality as the tested investments of foreign origin.
The article "Partial denture designing and preparation of master model for duplication in surveyor" is the last of four articles from a series which deals with application of surveyor in designing partial denture. The aim of this article is to describe partial denture designed as "step by step method". The operation with the surveyor, which supposes obligatory analysis of stady casts in order to prepare the supporting tissues, determination of the optimal part of denture insertion and finding of 2 heights of contour, gives this concept a biological character. Such designed partial dentures meet the prophylaxis requirements and have desired retention; they are comfortable and look well. As the suggested concept of partial denture design in surveyor represents the present achievements, in the conclusion of this paper its obligatory application is suggested.
The widely accepted method in partially edentulous treatment plan is the analysis of study cast. In our practice, however, various excuses are enumerated in order to avoid this method. The aim of this paper is to describe stages of the analysis of study cast in surveyor and to emphasize advantages of this therapy. Study cast analysis enables a real view of occlusion, morphological characteristics of abutment teeth and presents information about possible metal framework design. The conclusion of this paper is that the analysis of study cast could be an obligatory stage in preparing a patient partially edentulous treatment.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.