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Biomedical subjects

S Stefanov

Publications and source records attributed to S Stefanov.

18 recordsLinked to original sources
PubMed2004

[Surgical treatment of chronical pulmonary abscesses--contemporary treatment].

Between Jan 1991 and Dec 2000 a total of 67 patients were operated on for chronic primary pulmonary abscesses. They were 57 men and 10 women with mean age of 46.2 (range, 12 to 72) years. The indications for surgery was mainly "delayed closure" following medical therapy and percutaneous tube drainage (3), as well as a massive hemoptysis in 4 cases. CT scanning and brochoscopy were performed in all patients. The majority of them had multiple isolates (51/67) of both aerobic and anaerobic (predominantly Bacteroides sp., Fusobacterium sp., and Peptococci) organisms. The following operations were carried out: lobectomy (52) including 8 decortications, bilobectomy (5), pneumonectomy (4) including two pleuro pneumonectomy, polysegmentectomy (4) and segmental resection (2). The 30-day hospital mortality rate was 1.49% (1 patient died following rethoracotomy for bronchial stump fistula with empyema and polyorganic insufficiency). Major postoperative complications were 6 (8.9%) and included 3 pleural empyema (additional drainage), two rethoracotomy for intrapleural bleeding and one residual pleural cavity, treated by thoracoplasty. Minor postoperative complications (atelectasis, wound infection and prolonged air-leakage) were observed in 9 patients (13.4%). The long-term results (following-up ranged from 6 to 112 weeks) are considered very good. In conclusion, surgery is indicated for patients with significant hemoptysis, suspected malignancy and those with "late healing" abscesses with acceptable postoperative results, although the rate of major postoperative complications remains relatively high.

Adolescent↗
PubMed1991

[The diagnostic value of echography in hepatic echinococcosis].

The ultrasound method of examination led to revolutionary changes in the diagnosis of liver echinococcosis [correction of Echinococcus]. The ultrasound image of this disease, which is common in the region, is presented. The ultrasound method is compared with other diagnostic methods and its importance is pointed out. The ultrasound method of examination is a reliable means for the diagnosis of liver echinococcosis [correction of Echinococcus].

Adolescent↗
PubMed1987

[Hospital and prehospital mortality from acute myocardial infarct during 1982-1984].

The hospital and pre-hospital lethality is discussed for the period 1982-1984 according to the materials of the Clinic of cardiology and the necropsy protocols of the chairs of forensic medicine and pathological anatomy. The role of the risk factors, age and sex for hospital lethality during all three years is given consideration. Hospital lethality was reduced during the last (1984), the relative share of the deceased of cardiogenic shock was decreased. Almost identically high level of pre-hospital lethality persisted during all three years, bringing up the problem of the effectiveness of the primary prophylaxis of ischemic heart disease and improved work at the level of regional and workshop physicians and emergency medical aid.

Age Factors↗
PubMed1976

[Possibilities for information processing and operations simplification in multidimensional tasks of morphokinetic synthesis].

The authors propose an iterative method for separating classes of objects by reduction of multidimentional space of sings, which describe objects by twodimentional space of two integral processings of the differences between sings. For this purpose the differences are evaluated by three steps rating: positive difference, negative difference and no difference. The proposed iterative algorhythm allows by finite and a small number of procedures to remove indeterminace which in the general case is contained in the so defined on the work integral processings. The application of the algorhythm does not require a special mathematical training. Represantation of the objects by integral characteristics is made in twodimentional space. In the paper the report the authors give a generalization for the case of M-steps rating for evaluation of the differences between the signs of the objects.

Information Theory↗
PubMedDate not supplied

The Bulgarian version of the Childhood Health Assessment Questionnaire (CHAQ) and the Child Health Questionnaire (CHQ).

We report herein the results of the cross-cultural adaptation and validation into the Bulgarian language of the parent's version of two health related quality of life instruments. The Childhood Health Assessment Questionnaire (CHAQ) is a disease specific health instrument that measures functional ability in daily living activities in children with juvenile idiopathic arthritis (JIA). The Child Health Questionnaire (CHQ) is a generic health instrument designed to capture the physical and psychosocial well-being of children independently from the underlying disease. The Bulgarian CHAQ CHQ were fully validated with 1 forward and 1 backward translations. 137 subjects were enrolled: 77 patients with JIA (36% systemic onset, 30% polyarticular onset, 4% extended oligoarticular subtype, and 30% persistent oligoarticular subtype) and 60 healthy children. The CHAQ clinically discriminated between healthy subjects and JIA patients, with the polyarticular and extended oligoarticular subtypes having a higher degree of disability, pain, and a lower overall well-being when compared to their healthy peers. Also the CHQ clinically discriminated between healthy subjects and JIA patients, with the polyarticular onset and extended oligoarticular subtypes having a lower physical and psychosocial well-being when compared to their healthy peers. In conclusion the Bulgarian version of the CHAQ-CHQ is a reliable, and valid tool for the functional, physical and psychosocial assessment of children with JIA.

Adolescent↗