[Use of microstream capnography and alveolar recruitment during off-pump coronary artery bypass grafting].

The aim of the study was to investigate changes in EtCO2 and its correlation with PaCO2, and cardiac function during off-pump coronary artery bypass grafting (OPCAB) and to evaluate whether the recruitment maneuver was effective in improving gas exchange after OPCAB. Twenty adult patients scheduled for elective OPCAB were enrolled in a prospective randomized study. Anesthesia was maintained with midazolam, propofol, and fentanyl. After OPCAB the patients were randomized to a control group receiving conventional ventilation (n=10) or to a RM group (n=10) having ventilation and RM. RM was performed at min 15 after transfer to an ICU, by increasing airway pressure to 40 cm H2O for 40 sec subsequently adjusting PEEP to a level of 2 cm H2O above the lower inflection point of the pressure-volume curve. The measurements included hemodynamics, microstream capnography, respiratory parameters, and blood gasses. The baseline EtCO2 correlated with PaCO2 and cardiac index in both group (r = 0.7 and 0.81, respectively; p < 0.05). In the control group, OPCAB was followed by a rise in PaCO2 and worsening of arterial oxygenation (p < 0.05). After recruitment, EtCO, increased transiently whereas PaO2/FiO2 return to the baseline level. There was a moderate correlation between EtCO2 and PaCO2 before and after RM (r = 0.7 and 0.8, respectively; p < 0.05). The Bland-Altman analysis has shown that the difference between PaCO2 an EtCO2 was 1.9 +/- 11.4 mm Hg (M +/- 2SD). Thus, during OPCAB, EtCO2 measured by microstream capnography cor related well with PaCO2 and cardiac function. The use of RM after OPCAB increases CO2 elimination and improve arterial oxygenation.

[A molecular-and-genetic analysis of species and strain diversity of bifidobacteria in early childhood].

The species and strain composition of bifidobacteria in 29 children both sexes, aged 8 to 16 months, was studied. Species-specific primers and PCR were used to determine to which species the predominant strains of bifidobacteria, isolated from feces by cultural methods, belonged. Bifidobacteria were found in 28 (96.5%) children; their number was 10.2 +/- 0.7 ECU per a gram of the material. B. longum and B. bifidum were frequent (71.4 and 53.5%, respectively). The level of quantitative detection used in the study also allowed revealing of B. catenulatum (17.9%) and B. breve (14.4%). A high titer of B. dentium was found in one case (3.6%). B. adolescentis and B. angulatum were not found in any patient. The average number of species found in one child was 1.7 +/- 0.7. RAPD-PCR and investigation of plasmid profile were used to determine possible belonging of the isolates to different strains. The average number of strains per one sample was 2.3 +/- 1.2. Nine unique plasmid bifidobacterial strains were isolated from 7 children. In 3 children the intestinal tract was found to be colonized by both plasmid and non-plasmid-carrying strains of one bifidobacterial species.

Draft Genome Sequence of Lactobacillus fermentum NB-22.

We announce here a draft genome sequence of Lactobacillus fermentum NB-22, a strain isolated from human vaginal microbiota. The assembled sequence consists of 190 contigs, joined into 137 scaffolds, and the total size is 2.01 Mb.

[Search of promising strains of bifidobacteria and lactobacillus for the development of new biopreparations]. / Poisk perspektivnykh shtammov bifidobakterii i laktobatsill dlia razrabotki novykh biopreparatov.

For the first time the species composition of bifidobacteria and lactobacilli in clinically healthy young children has been studied. As revealed in this study, the dominating species of bifidobacteria are B. longum, B. adolescentis and B. infantis, while the dominating species of lactobacilli are Lactobacillus acidophilus and L. rhamnosus. In 83 isolated cultures of bifidobacteria and 34 isolated species of lactobacilli the activity of acid formation and the antagonistic activity with respect to Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Enterococcus faecalis, Clostridium perfringens have been tested. B. longum strain 58B, B. infantis strain 37B, L. rhamnosus strain 12L and L. acidophilus strain 27L, typical for children of this age group, having good antagonistic activity and pronounced acid-forming properties, have been selected. These strains hold good promise to be used as the basis for the development of a complex probiotic preparation for correcting intestinal microflora in young children.

[Qualitative and quantitative composition of intestinal microflora in healthy young children]. / Izuchenie kachestvennogo i kolichestvennogo sostava mikroflory kishechnika u klinicheski zdorovykh detei v rannem vozraste.

The results of the qualitative and quantitative analysis of the microflora of the large intestine in 45 healthy children aged 6, 8, 10 months and 1 year, living in Moscow, are presented. During the first year of life high concentrations and detection rate of not only bifidobacteria, enterococci, nonpathogenic Escherichia, but also bacteria, commonly regarded as opportunistic were typical. The latter include lecithinase positive Clostridium, citrate assimilating enterobacteria, as well as Escherichia with low biochemical activity and capacity for hemolysin production. In addition, this group also includes coagulase-positive staphylococci. Later on, as these children become older, opportunistic bacteria are partially or completely eliminated under normal conditions. Suggestion is made that the composition of intestinal microflora depends on protective and other systems of the host at different periods of life, as well as on the character of nutrition and the microbial contamination of the environment.