Background and Purpose: Investigations of the larynxes in thyrty infants during the first year of life of both sexes, randomized trial, were performed by morphological and histologic analysis. Morphometric parameters of the larynx as: length (anterolateral parameter), width (transverse parameter) and thickness (anteroposterior parameter) were determined. These parameters determine the size and shape of the larynx. The repciprocal relation parameters which determinate size of the larynx in infants and the body length are in high correlation. Therefore, the equation for calculating the size of the larynx out of the body heght was founded. Histologic characteristics of the laryngeal cartilage are constant. They indicate evident changes, that are the basis for approximate determination of a child’s age. Materials and Methods: The organs of the infants were taken from pathoanatomical autopsies. None had changes in the respiratory system. The major methods of the investigatio were anatomical macrodissection, morphological and histologic analysis and statistics. Results: The average body length in infants was 540 ± 20 mm (54 ± 2cm) and the average larynx length was 11.9± 0.3 mm. There was a correlation between these parameters p ‹ 0.01 (r = 0.75). The average value of the width of the larynx in infants was 17.7 ± 0.5 mm. The width of the larynx was in correlation with the body length p ‹ 0.01 (r = 0.79). The average value of the thickness of the larynx was 12.6 ± 0.4 mm. This parameter was correlated with the body length p < 0.01 (r = 0.82). Histological analyses results of our investigation, cartilage of the larynx in infants, show that hyalin structure is the result of age changes. Conclusion: Quantitative anatomical knowledge on the larynx in the pediatric population are necessary for the clinical orientation, particularly for choosing a suitable endotracheal tube. Size of the larynx in prematures, neonates and small children, constantly follows the external body dimensions, particularly the body height, that is confirmed by the correlation factor in its highest value. They indicate evident changes, that are the basis for approximate determination of a child’s age. Hyalin structure is in correlation to the children’s age.

Summary This research involved 50 patients processed in PZU, »Medicom« Zenica, by the method of MRI-angiography when performing MR of the neck. The way of ramification of the a. carotis externae, that is described in classical anatomy textbooks, where its branches separate as individual branches, is found in 76,6% to 81%, according to the data from the literature available. These data are confirmed by our researches, where presence of this ramification type was found in 84% of the total number of technically accurate MRI angiograms (91 angiogram). In 16% of cases, the branches of a. carotis externae originate as common trunks, or have unusual place of origin (a. carotis communis). A. thyroidea superior in 1,09% originates as common trunk with a. lingualis, but in three cases (3,33%) it originates as common trunk with a. lingualis.

Background and Purpose: In this study surface electromyography (sEMG) was used as stand alone acquisition tool in order to emphasize possibilities of sEMG utilization as a screening tool for ergonomic purposes. We presented comparison for task completion variations based on processed sEMG data, where sEMG was used as muscular activity screening tool with the objective to offer decision in the most convenient task variation. In this context, muscular activity screening used in this paper was based primarily on muscular activity index and its transformations, where such data were correlated with electrical energy induced by activated muscle groups. Material and Methods: Analysis of two different approaches to the fixed medical table and upper trunk alignment with table surface as the final target is performed for this purpose. Surface EMG signals were recorded using an eight-channel fiber optic TELEMG system (BTS S.p.a.) sampling at a frequency of 1000 Hz for selected muscles of right body side alone, in order to maximize muscular activity overview. If set otherwise (for both body sides), 8 available channel electrodes reduced the number of monitored muscle groups to 4 for each body side, causing decreased comparability and objectivity of muscular activity screening. Results and Conclusion: Finally, after benchmarking task routines, Model 2 as routine approach was less demanding than Model 1, muscular activity index as equivalent to energy or work done over time in the monitored muscles was suitable for the purpose of muscular activity estimation, but should be expressed with consideration of muscular activity duration as muscle energy expenditure per time unit. Despite its imperfections, sEMG may be exploited as stand alone and as complement to other available acquisition and analysis tools.