The correlation between intraoperative temperature and postoperative neurological prognosis in aortic arch surgery: a single-center retrospective cohort study / 中华胸心血管外科杂志

Objective:To explore the correlation between intraoperative cooling temperature and postoperative neurological prognosis in aortic arch surgery.Methods:We observed and collected data from 118 patients who underwent open arch replacement surgery by a single surgeon with mild-to-moderate hypothermic circulatory arrest, from January 2017 to December 2020, in Beijing Anzhen Hospital. According to the bladder temperature during the circulation arrest, 118 patients were divided into 3 groups: T1 group[n=39, (25.58±0.64)℃]; T2 group[n=39, (28.21±0.77)℃]; T3 group[n=40, (30.95±0.97)℃]. Clinical data and operative data were analyzed to assess difference between these 3 groups. Analyze the risk factors of postoperative neurological complications, and explore further the correlation between intraoperative core temperature and postoperative neurological prognosis.Results:Among the 118 patients, the average operation, cardiopulmonary bypass (CPB), block, circulatory arrest, and selective cerebral perfusion (SCP) time were 6.64 h, 188.5 min, 104.19 min, 23.93 min, 28.81 min, respectively. The in-hospital death occurred in 8 patients(6.78%), and permanent neurological dysfunction (PND) in 13 patients(11.02%), transient neurological dysfunction (TND) in 25 patients(21.19%). There was no significant difference in the deaths among the three groups. The incidence of TND and PND in the T3 group was significantly reduced ( P=0.042; P=0.045). In addition, the volume of drainage during the first 24 h and the incidence of re-exploration for bleeding had a relatively obvious decreasing trend ( P=0.005; P=0.012). Through multiple regression analysis, under the adjusted model, the core temperature was independently correlated with the incidence of postoperative PND ( OR=0.51; 95% CI: 0.27-0.97; P=0.0389); in group comparison, the relatively higher core temperature was an independent protective factor for postoperative PND ( OR=0.04; 95% CI: 0.00-0.91; P=0.0434). Conclusion:Our research had preliminary proved that in the open arch replacement surgery, mild hypothermia can reduce the incidence of some complications of deep hypothermia, at the same time improve the prognosis of the neurological prognosis, reduce the incidence of postoperative PND.

Baixa fricção do sistema autoligado associado ao uso estratégico dos stops / Self-ligating system low friction associated with the strategic use of the stops

O uso dos braquetes autoligados tem sido cada vez mais difundido entre os ortodontistas de todo o mundo por apresentar muitas vantagens, como baixa fricção e níveis baixos de forças. O presente trabalho descreveu o tratamento ortodôntico de um paciente de 17 anos e um mês de idade, com apinhamento superior e inferior, e desvio de linha média dentária, cujos resultados demonstraram a efetividade do tratamento realizado com o sistema autoligado, otimizado por meio do uso estratégico dos stops.

The use of self-ligating brackets has been increasingly widespread among orthodontists from around the world by presenting many advantages such as low friction and low levels of forces. This paper describes the orthodontic treatment of a patient of 17 years and 1 month old, with upper and lower crowding and dental midline deviation, which results demonstrate the effectiveness of the treatment with the selfligating system, optimized by the strategic use of the stops.

Relationship between Trace Elements and Asthenia TCM Syndromes in Embryonic Development Stops / 中国中医药信息杂志

Objective To study the relationship between the asthenia TCM syndromes in embryonic development stops and the level of zinc, iron, copper, magnesium, phosphorus, calcium in serum, and provide thoughts for assisting reproduction and preventing miscarriage. Methods Totally 100 patients of embryonic development stops were selected randomly (6-10 weeks gestation) to be the investigated group, with other 100 cases of live fetus as the control group. The contents of trace elements in serum were detected with atomic absorption spectrometry. Results The levels of trace elements in embryonic development stops patients were generally lower than the control group. The serum iron in patients with spleen deficiency syndrome, and serum zinc and iron in patients with kidney deficiency syndrome were significant lower (P<0.05). Conclusion The contents of trace elements in serum have relationships with asthenia TCM syndromes in embryonic development stops. It should be paid attention to supplementing trace elements during the gestation period. For patients with deficiency of kidney and spleen, the supplement of zinc and iron should be given greater prominence.

Glottal stops of patients with cleft palate:A preliminary acoustic study / 实用口腔医学杂志

Objective:To observe the acoustic characteristics of glottal stops produced by patients with cleft palate.Methods:Twenty boys with cleft palate who were judged to be glottal-stop-producers and 20 normal peers were included. In their own way, all the children were asked to produce following sounds: /iu/ /pai/ /t′u/, /s/ /k′/ /p′u/ /t′u/, /tA/ /ku/ and /i/ /k′u/ /ti/ /suan/. Then the speech spectroanalysis and the comparison were performed by one investigator.Results:The acoustic characteristics of glottal stops changed a lot when they substitute or accompany with different oral stops, which included the emergence of spikes, changes of voice onset time, the formant transitions and spetroanalysis of spikes. Conclusion:The acoustic changes of glottal stops are complicated. Every single aspects of acoustic analysis should be considered in the identification of the acoustic characteristics.