医患通平台在经皮冠状动脉介入治疗术后患者中的应用

目的:探讨医患通平台对经皮冠状动脉介入治疗(PCI)术后患者进行护理的临床效应。方法:选取54例冠心病行PCI治疗术后患者,随机分为对照组和试验组,各27例。对照组采用常规护理,试验组在对照组的基础上采用医患通平台进行护理干预,比较两组患者血压、血脂、血糖的控制情况,主要不良心脏事件(MACE)的发生情况,并采用汉密尔顿焦虑量表(HAMA)及汉密尔顿抑郁量表(HAMD)对两组患者进行心理状况调查。结果:实施干预后,试验组血压、血脂、血糖的控制率优于对照组(P0.05),MACE的发生率低于对照组(P0.05);两组患者两组干预前HAMA、HAMD评分比较无明显差异(P0.05),干预后试验组患者HAMA评分、HAMD评分有所下降,与干预前及对照组比较差异显著(P0.01),对照组干预前后无变化(P0.05)。结论:医患通平台能有效地让PCI术后患者对危险因素进行控制,降低MACE的发生,改善患者的负性情绪,是较好的健康教育方式。     

Population dynamics of the Late Devonian conodont Alternognathus calibrated in days

Abstract

Alternognathus is a cavusgnathid conodont believed to be a relative and possible ancestor of the Siphonodella lineage, which is of crucial importance to the biostratigraphy of the Devonian–Carboniferous transition, as well as the Early Carboniferous Clydagnathus, with the most completely known soft tissue anatomy among conodonts. Specimens of Alternognathus from the Kowala quarry in central Poland have their basal cavities lacking any mineralised basal body tissue, exposing rhythmic growth increments of probably daily nature. This enables calibration of ontogeny and population dynamics of Alternognathus in absolute time units and to estimate the correspondence between data derived from isolated oral apparatus elements and the animal body size. The peak of mortality, probably resulting from predation, occurred at 18–28 days of the Alternognathus oral apparatus element secretion and the inferred whole animal length of about 1.6–2.9 cm. Based on analogy with present-day fish, the actual beginning of individual life presumably preceded the initiation of the mineral tissue secretion for about 8 days. This makes the dominant life cycle close to the lunar month length and suggests analogy to cyclic mortality of modern tropical organisms due to full moon light influence on their daily vertical migration.     

Ordovician radiolaria and conodonts from the peri-Gondwanan Karatau-Naryn microplate (Sarydzhaz, eastern Kyrgyzstan)

Cambrian-Ordovician sedimentary sequences crop out extensively in the area surrounding the Sarydzhaz River, a remote mountainous region situated in the eastern part of Kyrgyzstan. These sequences, composed essentially of fine siliciclastic lithologies, were deposited on a passive margin of the peri-Gondwanan Karatau-Naryn microplate. Palaeontological constraints for the age of these sequences are rare. Recent efforts of geological mapping in the area discovered reasonably well-preserved radiolarian and conodont faunas. The occurrence of conodonts was mentioned previously, but no taxonomic details were ever reported. Two conodont assemblages are identified from the Oldzhobai Formation; the first is dominated by Paracordylodus gracilis, which can be correlated with the upper Tremadocian to lower Floian; the second assemblage is more diverse and characterized by Prioniodus elegans, suggesting a mid Floian age. This is the first discovery of Ordovician Radiolaria from Kyrgyzstan. In spite of its rather moderately good to poor preservation, the fauna is interesting in many respects, especially due to the presence of a new radiolarian species (Inanigutta (?) kyrgyza nov. sp.). The latter is easily identifiable by the distinctive pore pattern of its cortical shell and has therefore the potential to become in the future a biostratigraphic marker species.     

Resolving Terreneuvian stratigraphy in subtidal–intertidal carbonates: palaeontological and chemostratigraphical evidence from the Turukhansk Uplift,Siberian Platform

Both diverse assemblages of small skeletal fossils and a representative chemostratigraphical record make the Siberian Platform widely regarded as one of the key regions for the reconstruction of global biotic and abiotic events in the late Ediacaran and early Cambrian. However, the wide distribution of intertidal–subtidal facies in the Ediacaran–Cambrian transitional strata of the central and southwestern Siberian Platform (Turukhansk–Irkutsk–Olekma facies region) produces a dramatic depletion of the palaeontological record and considerably limits their age‐calibration and long‐distance correlation. We report new lithological, palaeontological and carbonate carbon‐isotope data for the Ediacaran–Cambrian sections of the Turukhansk Uplift (northwestern Siberian Platform, western facies region). These data provide a robust framework for the chemostratigraphical correlation of the western facies region with sections of the transitional and eastern regions of the Siberian Platform and further confirms a depositional hiatus at the base of the Tommotian Stage in the stratotype section (Aldan River, SE Siberia). The carbon‐isotope curve from the Turukhansk Uplift sections correlates positively with the most chemostratigraphically representative Ediacaran–Cambrian sections (Siberia, Morocco, South China). It records major carbon‐isotope oscillations globally recognized in the lower Cambrian, enabling localization of the Fortunian and Cambrian Stage 2 boundaries in the Platonovskaya Formation. Although there is extreme paucity and poor preservation of the small skeletal fossils in the western facies region, we report individual Barskovia, Blastulospongia and chancelloriid sclerites from the Platonovskaya Formation. A combination of palaeontological and chemostratigraphical data suggests the base of P. antiqua Assemblage Zone is located in the middle Platonovskaya Formation. The earliest spiral gastropods probably occurred at ~541 Ma, as demonstrated by the discovery of a specimen of Barskovia near the base of the large negative excursion in the lower Platonovskaya Formation, correlated with the BACE negative carbon‐isotope peak in the sections of the Yangtze Platform.     

Correlating the global Cambrian–Ordovician boundary: Precise comparison of the Xiaoyangqiao section,Dayangcha, North China with the Green Point GSSP section,Newfoundland, Canada

The Cambrian–Ordovician boundary interval exposed at the Xiaoyangqiao section, North China is presented. The distribution of stratigraphically important fossils in the Xiaoyangqiao section revealed several nearly coeval graptolite, conodont, trilobite, and acritarch bioevents in the uppermost Cambrian–lowermost Ordovician carbonate-siliciclastic sedimentary sequence. The precise correlation to the Green Point GSSP section, western Newfoundland, Canada allows for the identification of the corresponding GSSP level in the Xiaoyangqiao section. The combined data from the Xiaoyangqiao section and the Green Point GSSP section provide a series of events that all can be applied as proxies for identification of the Cambrian–Ordovician boundary horizon outside the GSSP. Based on this, the Xiaoyangqiao section, Dayangcha, is here strongly recommended as a candidate for an Auxiliary Boundary Stratigraphic Section and Point section (ASSP) for the base of the Ordovician System, because it provides one of the best and most complete Cambrian–Ordovician transitions in the world and because the first planktic graptolites are from the Xiaoyangqiao section.     

The biological affinity of Amsassia: new evidence from the Ordovician of North China

Amsassia shaanxiensis sp. nov. occurs in the Middle Ordovician part of the Jinghe Formation in Yongshou and the lower part of the Upper Ordovician Beiguoshan Formation in Longxian, Shaanxi Province, north‐central China. In addition to module increase by bipartite longitudinal fission, which is also known in other species of Amsassia, tripartite and rare quadripartite fission are recognized in A. shaanxiensis. All species previously assigned to Lichenaria from the Middle to Upper Ordovician of Shaanxi probably belong to Amsassia. Therefore, Amsassia, rather than the tabulate coral Lichenaria, should be credited as an important contributor to reef‐building in this area. Reports of Lichenaria from elsewhere in the North China Platform require confirmation in the light of the present study. Some morphological characteristics of Amsassia are comparable to those of tabulate corals, tetradiids and chaetetid sponges. Consequently, various authors have assigned Amsassia to the Lichenariida, Tetradiida (now Prismostylales; florideophycean rhodophyte algae) and Chaetetida. Other important characters, however, seem to exclude Amsassia from those taxonomic groups. The phacelocerioid organization of modules having separate walls would not be expected in sponges. The basic symmetry of individuals may have been radial, unlike the tetramerous symmetry of tetradiids. Module increase by longitudinal fission, involving infoldings of the wall, is fundamentally different from modes of increase in corals, tetradiids and chaetetids. The skeleton was probably aragonitic, whereas that of tabulates was calcitic. The affinity of Amsassia remains unresolved, but it is unlikely to have been a coral, tetradiid or sponge. Perhaps, like the tetradiids, Amsassia was an alga.     

AnOistodus venustus-like conodont species from the Middle Ordovician of Baltoscandia

Ordovician conodont specimens resemblingOistodus venustus Stauffer, 1935 have been reported from many areas. There is increasing evidence, however, that several lineages with homeomorphic conodont elements have erroneously been referred to one and the same species. I have investigated Baltoscandian conodont elements of this kind in order to find out about their origins and phylogenetic relationships with morphologically comparable elements from other areas. A natural grouping of finds from the Middle and lower Upper Ordovician of Baltoscandia is here described as belonging to a new species of a new genus,Venoistodus balticus n. gen., n. sp. The new species probably evolved paedomorphically fromDrepanoistodus forceps (Lindström, 1955) in the Early Ordovician.     

New conodont species from the Kasimovian Stage (Upper Carboniferous) of Moscow and Moscow Basin

Three new conodont species, Streptognathodus neverovensis, S. isakovae, and Idiognathodus mestsherensis, which are widespread in the Kasimovian Stage of central Russia, are described.     

蒙古南戈壁泥盆纪(埃姆斯期-艾菲尔期)牙形刺

在蒙古南戈壁地区丘隆组(Chuluun Formation)和查干卡勒噶组(Tsagaankhaalga Formation)发现的牙形刺证明丘隆组的时代为晚埃姆斯期,查干卡勒噶组的时代为早艾菲尔期,与以前大化石所确定的时代一致。但艾菲尔阶的底界暂时还无法准确确定,蒙古南戈壁地区艾菲尔阶牙形刺动物群与同期北美的牙形刺动物群相似．但也包含一些地方性分子,蒙古海相艾菲尔期的沉积可能不完整。本文描述了2个命名新种．Caudicriodus delicatus sp. nov. , C. paraculicellus sp. nov. ,一个未命名新种,Caudicriodus sp. nov. A和一个新亚种,Cuadicriodus angustus cauda subsp, nov.。