[On evaluating occupational fitness in railway workers with ventricular arrhythmias after coronary arteries stenting].

The authors studied prospects of work capacity preserving after coronary stenting in IHD and cardiac arrhythmias. Examination covered 158 railway workers underwent complete endovascular revascularization of myocardium for coronary stenosis; all of them had ventricular arrhythmias before coronary surgery. Findings are that in long-term period (in 16 months in average) after coronary stenting, grade I and III ventricular extrasystoles disappeared in 77.8 and 54.5% of cases respectively, but only in 11.9% of grade IV ventricular extrasystoles cases. Ventricular extrasystoles remained unchanged in 44.3% of cases. Reliable relationships were seen between unchanged grade IV ventricular extrasystoles and body weight index (OR = 5.49, 95% CI: 0.87-34.67), general cholesterol level (OR = 1.69; 95% CI: 1.06-2.69), low density lipoproteins (OR = 1.66; 95% CI: 1.00-2.76) and left ventricular ejection function lower 45% (OR = 1.61; 95% CI: 1.14-2.27), exertion ventricular extrasystoles before myocardium revascularization (OR = 3.1; 95% CI: 1.78-5.41). That necessitates correction of the mentioned risk factors of cardiac arrhythmias for restored work capacity.

[Structure of allostatic load in railway workers].

The authors studied allostatic load in railway workers, as an indicator of stress effect. Analysis covered biomarkers that form allostatic load index, and their ratio for variable allostatic load index levels. Moderate allostatic load appeared to prevail in the examinees group. Findings are that systolic and diastolic blood pressure, general cholesterol and hemoglobin make major contribution into allostatic load index. Comparison covered models of allostatic load index calculation for variable biomarkers sets.

[Occupational deafness in workers of locomotive crew and its association with risk factors].

The authors studied relationship between occupational neurosensory deafness and risk factors in locomotive crew workers. Examination covered 173 locomotive crew workers divided into 2 groups: group 1--with occupational neurosensory deafness (n = 85) and group 2--without occupational neurosensory deafness (n = 88). Study covered occupational factors and calculated effective dose connected to length of service for exposure assessment. Complex clinical and laboratory study was performed. For signs structure analysis, principal components method and chances ratio were used. Occupational neurosensory deafness appeared to be reliably connected with length of service, arterial hypertension, dyslipidemia--with OR equals 5.7 (95% CI: 2.98-11.00), 1.88 (95% CI: 1.03-3.43) and 2.79 (95% CI: 1.5-5.18) respectively. That necessitates correction of hypertension and dyslipidemia.