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Biomedical subjects

G Dimov

Publications and source records attributed to G Dimov.

14 recordsLinked to original sources
PubMed2003

[Algorithms for procedures in thoracic trauma].

The study includes 1127 injured with thoracic trauma, 23 percent of them with polytrauma. The worse thoracic trauma were these with formed flail chest with pleural and lung complications, accompanied by severe disfunction in circulation and biomechanics of breathing. The application of minimal surgical procedures like pleural punctures and drainage of pleural cavities with aspiration achieved good results. Thoracotomy was performed on clear indications (unstoppable bleeding, large ruptures of lung parenchyma, suppurative lung haematoma, cardiac tamponade, rupture of major airways, rupture of diaphragm, rupture of oesophagus and coagulated haemothorax). The achieved mortality of 5.9 percent is an excellent index suggesting a choice of treatment.

Adolescent↗
PubMed2003

[Mediastinitis--diagnostics and surgical treament].

During the last 10 years we have treated 23 patients with acute mediastinitis. The patients' age, sex, medical status, causes of the infection, bacteriology, chest X-ray and computed tomography scan findings, surgical intervention, complications, survival, and other clinical parameters were reviewed.

Female↗
PubMed2003

[Uncommon tracheal trauma. Diagnosis and treatment].

The trauma of the trachea and bronchi are extremely rare, in 0.6 to 3 per cent of the patients with chest trauma. Most common are the longitudinal lesions localized in the membranous part. Following are the transversal lesions localized between two cartilaginous rings and in 20 per cent of the cases total circular lesions with dislocation of the two ends are found. A review of the clinical signs, the complications, the diagnosis and the successful operative treatment of a patient with the latter particularly rare traumatic injury of the trachea is presented.

Adult↗
PubMed2003

[Spontaneous esophageal perforation--a case report and review].

The quick diagnosis is decisive for the outcome of the treatment of patients with esophageal perforation because of the serious complications--mediastinitis, empyema and sepsis. These are the main causes for the high mortality of up to 60 per cent of the patients with esophageal perforation. The difficulties for the particular operative tactics rise from the late diagnosis. These are the most problematic moments of the spontaneous esophageal perforation (Boerhaave's syndrome) management. A review of the clinical signs, the complications, the diagnostics and the successful operative treatment on a patient with Boerhaave's syndrome performed on the 10th day after the incident is presented.

Digestive System Surgical Procedures↗
PubMed1997

UN/EDIFACT based medical documentation and messages.

New documentation and messages conforming to the rules of EDIFACT are created and an attempt is made to follow internationally standardised and wordwide available commercial experience. A set of medical documents, aligned with United Nations Layout Key for trade documents is designed. The approach is to develop a set of paper documents and to standardise the data which are filled in these documents. There is a possibility to fill the data directly in medical documents and to print them from the Clinical Information System in our University Hospital.

Bulgaria↗
PubMed1996

Effect of variance of interaction effects of sire and herd on selection for milk and fat yield.

The animal model for genetic evaluations of dairy cattle by the USDA currently includes a term for interaction effects of sire and herd. The relative magnitude of the variance of that effect was established in the 1960s as 14% of the total variance, but recent research has shown that the proportion is 2% or less. This report compared EBV using either the 14% or the actual estimate from 20 samples of records from herds in California, New York, and Pennsylvania. From 6 to 22% of bulls or cows selected for milk and fat yields based on evaluation with 14% of the total variance would not be selected using the sample estimates, depending on selection intensity, region, and whether only first or up to three lactations were used in the evaluations. Nevertheless, the average EBV of the bulls and cows selected based on 14% of the total variance were only slightly less than for those selected on 2%. This pilot research suggests that further study of the national data be done to establish the appropriate proportion of variance from interaction effects of sire and herd to use with national evaluations. Kinds of evaluations of bulls and ages of cows and bulls should be considered.

Animals↗
PubMed1995

Variance of interaction effects of sire and herd for yield traits of Holsteins in California, New York, and Pennsylvania with an animal model.

An animal model with a REML algorithm was used to estimate variances of additive genetic effects and interaction effects of sire and herd. Milk and fat yields were analyzed for first, second, and third lactations of Holsteins from California, New York, and Pennsylvania. Twenty samples of data were used in the study: 10 from California, 4 from New York, and 6 from Pennsylvania. Mean number of lactations per sample was 36,820 from 18,189 cows in 156 herds. Mean fractions of phenotypic variance of interaction effects of sire and herd for milk and fat yields were .015 and .019 for first lactation and .019 and .021 for all (up to three) lactations rather than the .14 used for national genetic evaluations in the US. Mean heritability estimates for milk and fat yields were .26 and .24 for first lactation and .21 and .21 for all lactations in California and .34 and .35 for first lactations and .28 and .29 for all lactations in New York. Sums of variances of permanent environmental and interaction effects of sire and herd were similar to those used for national genetic evaluations in the US. Analysis of another 10 samples from California and 10 samples from New York showed only slightly different fractions of phenotypic variance for milk yield for interaction effects of sire by herd, sire by herd by year, and sire by herd by year by season: .023, .027, and .037 for California and .023, .017, and .023 for New York, respectively.

Animals↗
PubMed1995

Estimates using an animal model of (co)variances for yields of milk, fat, and protein for the first lactation of Holstein cows in California and New York.

First lactation yields of milk, fat, and protein from Holstein cows in New York and California were used to obtain REML estimates of (co)variances for yield traits using a multitrait animal model. Data from each state were split randomly into 10 samples, averaging 5504 cows per sample from California and 5078 from New York. Mean heritability estimates for milk, fat, and protein yields were .30 +/- .02, .31 +/- .01, and .29 +/- .01 for California data and .33 +/- .01, .35 +/- .01, and .30 +/- .01 for New York data. Averages of genetic correlation estimates for California and New York were .63 +/- .01 and .52 +/- .02 between milk and fat, .84 +/- .01 and .83 +/- .01 between milk and protein, and .73 +/- .01 and .68 +/- .01 between fat and protein. Estimates of environmental correlations were larger than estimates of genetic correlations. Mean estimates of phenotypic correlations for California and New York were .75 +/- .01 and .72 +/- .01 between milk and fat, .92 +/- .01 and .91 +/- .01 between milk and protein, and .81 +/- .01 and .79 +/- .01 between fat and protein yields. On average, these estimates agree with those obtained from animal models with limited rounds of iteration for small data files.

Animals↗