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The paper presents the distribution and habitat conditions of Riccietum fluitantis Slavnić 1956 (Lemnetea minoris class) in oxbow lakes of south-western Poland. During research done in 2000–2018, 11 localities of this community were found. The main threats to Riccietum fluitantis in oxbow lakes in south-western Poland are changes in water levels and physicochemical properties. Problems associated with distinguishing Riccietum fluitantis are discussed. [ABSTRACT FROM AUTHOR]

Atropa belladonna L. is a rare and threatened plant in Silesia Province. The paper lists its stations and gives information about their conservation status. Atropa belladonna is known from about 60 stations here, 24 of which were confirmed after 2010. [ABSTRACT FROM AUTHOR]

The paper contains information about 99 species and one variety of mosses from the Beskid Sądecki range, of which 36 species (e.g. Anomodon attenuatus, Neckera pennata, Zygodon rupestris) are protected by law and 10 (e.g. Neckera besseri, Syntrichia virescens, Tomentypnum nitens) are threatened in Poland. Eleven species (Aloina rigida, Bryum rubens, Cirriphyllum crassinervium, Eucladium verticillatum, Fissidens rufulus, Guembelia longirostris, Schistidium lancifolium, Schistidium papillosum, Sphagnum russowii, Thamnobryum neckeroides, Tortula modica) are first records for this region. [ABSTRACT FROM AUTHOR]

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The paper presents information about new stations of six interesting bryophytes newly found in Silesia Province: Hypnum heseleri (species new for Poland), Moerckia hibernica, Octodiceras fontanum, Riccia rhenana, Trematodon ambiguus and Weissia squarrosa. Their current distribution in Poland is briefly discussed. [ABSTRACT FROM AUTHOR]

The paper lists the localities of Arctostaphylos uva-ursi (L.) Spreng in Silesian Voivodeship, with comments on their conservation status. Arctostaphylos uva-ursi is a rare and threatened species in Silesian Voivodeship. It was known from 69 stations but 90% of them are no longer extant. [ABSTRACT FROM AUTHOR]

Microbryum davallianum (Sm.) R.H.Zander is a moss growing in the lowland of Poland. The number of its localities is estimated at over 70, the vast majority of them from the 19th century and the first half of the 20th century. Recently, Rusińska & Górski (2012) gave several stations of this species from the vicinity of Poznań, revising the available herbarium materials and presenting its occurrence in the country. It is unknown what factors are behind the rarity of M. davallianum in Poland. The current situation of this moss indicates that it should be considered an endangered species, mainly due to the significant decrease in the number of its stations. The paper describes a new station discovered on 27 June 2018 in Białobrzegi near Zamość in the Lublin Upland (50°45'24'N, 23°8'50'E, leg. R. Krawczyk, LBL, SOSN). The plant inhabited the periodically flooded and plowed margins of a mid-field depression, profusely producing sporophytes. [ABSTRACT FROM AUTHOR]

Pediatric open heart surgery is associated with the usage of cardiopulmonary bypass. The circuit is primed with blood products because of risk of excessive hemodilution. The aim of the study was to prove the safety of open heart surgery on cardiopulmonary bypass without the use of blood products in the pediatric group. In this study, 78 patients with atrial septal defect (ASD type II) were enrolled and underwent elective atrial septal defect repair between the years of 1999 and 2003. The group I included 37 children aged from 3 to 16 years (8.79 +/- 4.45) who weighed from 13 to 68.8 kg (29.93 +/- 15.00). In this group, the transfusion of blood products during the surgery and postoperative course was avoided. Blood products were used in a control group (group II 4.1 patients) both during and after surgery. Children from this population ranged in age from 2.5 to 17 years (8.41+/- 4.18) and weighed from 11.5 to 59.7 kg (26.99 +/-12.95). For statistical analysis the t-Student test and U Mann Whitney test were used. The length of stay in the intensive care unit (1.18 +/- 0.47 vs 1.20 +/- 0.61 days) and total hospital stay (8.91 +/- 3.05 vs 10.05 +/- 4.28 days) did not differ statistically between the groups. Values of haematocrit and hemoglobin levels were statistically lower in group I during the postoperative course compared to the control group (intraoperative Hct: 19.43 +/- 4.93 vs 23.37 +/- 4.68%, p < 0.001), but these levels did not correlate with the occurrence of hypoxic, neurologic or coagulation complications. Directly after the surgery, group I had significantly higher platelet and leucocyte counts compared to the control group. There were no differences between the confronted populations in regard to postoperative bleeding (4.61 +/- 2.24 vs 4.76 +/- 1.75 ml/kg). The avoidance of using blood products in pediatric patients during open heart surgery with cardiopulmonary bypass is found to be safe, is not correlated with an increased surgical risk, and does not result in a prolonged hospital stay.