Investigating the application value of propofol combined with sufentanil and dexmedetomidine in cosmetic anesthesia

Objective:To investigate the effects of propofol combined wit h s u f e n t a n i l a n d dexmedetomidine in cosmetic anesthesia.Methods:The clinical data of 40 plastic surgery patients admitted to the hospital from June to November 2019 were retrospectively analyzed.According to the different anesthesia methods during surgery,they were divided into control group(propofol combined with sufentanil and normal saline,20 cases)and was compared with the observation group(propofol combined with sufentanil and dexmedetomidine,20 cases).The anesthetic effect,total dosage of propofol,spontaneous breathing recovery time,and adverse reactions were compared between the two groups.Results:The total dosage of propofol in the observation group was less than that in the control group,and the spontaneous breathing recovery time was shorter than that in the control group.The difference was statistically significant(P<0.05).There was no significant difference in the anesthetic effect and adverse reaction rate between the two groups(P>0.05).Conclusion:The application of propofol in combination with sufentanil and dexmedetomidine in cosmetic anesthesia can reduce the dosage of propofol,speed up the anesthesia recovery,and have better anesthetic effect and safety.

Comparison of the Effect of Combined Cardiovascular Dexmedetomidine and Propofol in Minimally Invasive axillary Odor Surgery with Tumescent Anesthesia

Objective:The effects of combined dexmedetomidine hydrochloride and propofol in minimally invasive axillary odor surgery with tumescent anesthesia.Methods:A total of 46 patients underwent minimally invasive axillary odor surgery by tumescent anesthesia received in the hospital from May 2017 to January 2019 were divided into observation group(23 cases)and control group(23 cases)according to the random number table method.The control group used propofol,and the observation group underwent minimally invasive axillary odor combined with dexmedetomidine hydrochloride by tumescent anesthesia.The changes of arterial blood pressure(MAP),heart rate(HR)and postoperative complications before and after anesthesia were compared and analyzed between the two groups.Results:After anesthesia,MAP and HR in both groups were lower than before anesthesia,and the observation group was lower than the control group,the difference was statistically significant(P<0.05).Compared with the control group,the postoperative complications were less in the observation group,but the difference was not statistically significant(P>0.05).Conclusion:Compared with the use of propofol,the effect of dexmedetomidine hydrochloride combined with minimally invasive axillary odor surgery by tumescent anesthesia is more obvious,and the postoperative recovery is faster with fewer complications.

Using Wikipedia as an External Knowledge Source for Supporting Contextual Disambiguation

Every term has a meaning but there are terms which have multiple meanings. Identifying the correct meaning of a term in a specific context is the goal of Word Sense Disambiguation (WSD) applications. Identifying the correct sense of a term given a limited context is even harder. This research aims at solving the problem of identifying the correct sense of a term given only one term as its context. The main focus of this research is on using Wikipedia as the external knowledge source to decipher the true meaning of each term using a single term as the context. We experimented with the semantically rich Wikipedia senses and hyperlinks for context disambiguation. We also analyzed the effect of sense filtering on context extraction and found it quite effective for contextual disambiguation. Results have shown that disambiguation with filtering works quite well on manually disambiguated dataset with the performance accuracy of 86%.

Clinical Application of Minimally Invasive Surgery in Pain and Complications after Spinal Trauma

Objective:To study and evaluate the incidence of pain and complications in patients with spinal trauma after minimally invasive treatment.Methods:The research period was selected from January 2018 to December 2020,and 40 patients with spinal trauma were selected.According to the random number table scheme,they were divided into the study group and the control group.The treatment scheme of the control group was traditional surgery,and the treatment scheme of the study group was minimally invasive surgery.The indicators of the two groups were compared and analyzed.Results:Compared with the two groups of surgery and postoperative recovery related indicators,the study group had more advantages(P<0.05);Compared two groups of postoperative NRS score,VAS score and the incidence of complications,the study group had more advantages(P<0.05).Conclusion:Minimally invasive treatment of spinal trauma has significant clinical effect,which can effectively relieve postoperative pain and reduce the incidence of various complications.

Metamorphic evolution of the East Tethys tectonic domain and its tectonic implications

The China Central Orogenic System(CCOS),extending in an east-west direction in the middle part of China,is composed of the Early Paleozoic Altyn-North Qilian-North Qaidam-East Kunlun-North Qinling-North Tongbai orogens in the west and the Late Paleozoic to Early Mesozoic South Tongbai-Hong'an-Dabie-Sulu orogens in the east.They were produced by oceanic subduction and continental subduction/collision during the closure of the Proto-Tethys and the Paleo-Tethys oceans,respectively.Different types of metamorphic rocks with various ages are extensively exposed in these orogens,and they were produced at different geothermal gradients in different stages during the tectonic evolution of convergent continental margins,making them ideal targets to reconstruct the spatiotemporal evolution of the Eastern Tethys tectonic domain.In this article,an integrated study of metamorphic temperature(T)-pressure(P)-time(t)records is presented for metamorphic rocks along the CCOS,aiming to ascertain the change of metamorphic T/P ratios in both time and space,and then shed light on the tectonic evolution of the East Tethys tectonic domain in association with the thermal state change of convergent continental margins.The results indicate that despite the difference in metamorphic ages,metamorphic rocks in different orogens show a common trend with clockwise P-T-t paths.With respect to plate convergence for subduction and collision,regional metamorphism is categorized into three stages:(1)an early convergent stage,corresponding to low T/P Alpine-type blueschist-to eclogite-facies high-P to ultrahigh-P metamorphism;(2)a later convergent stage,corresponding to the medium T/P Barrovian-type medium-P amphibolite to high-P granulite-facies metamorphism;and(3)a post-convergent stage,corresponding to the high T/P Buchan-type lowP amphibolite to MP granulite-facies metamorphism.Nonetheless,a few metamorphic rocks only record a two-sage metamorphic evolution,with an early Barrovian-type high-P granulite-facies metamorphism and a late Buchan-type low-P granulitefacies metamorphic overprinting.In modern convergent plate margins,Alpine-type metamorphism mainly occurs in the stages of oceanic subduction and continental collision,Barrovian-type metamorphism takes pace in both stages of crustal thickening during continental hard collision and slab exhumation when continental subduction zones have evolved from compressional to extensional regimes,and Buchan-type metamorphism occurs in intracontinental rifting stage after the plate convergence.Therefore,the tectonic evolution of convergent continental margins can be reconstructed by combining metamorphic T/P ratios with their corresponding metamorphic facies series and metamorphic timing of metamorphic rocks.Based on the reported metamorphic rocks of different types and ages along the CCOS,it appears that the continental subduction/collision occurred at 500–490 Ma in the Altyn-North Qinling-North Tongbai orogens but 450–430 Ma in the North Qaidam-East Kunlun orogens,and the intracontinental rifting occurred at 460–450 Ma in the Altyn-North Qinling-North Tongbai orogens but 410–400 Ma in the North Qaidam-East Kunlun orogens,respectively,in the western Proto-Tethys domain.For the eastern Paleo-Tethys domain,in contrast,the continental subduction/collision occurred at 250–220 Ma and post-collisional intracontinental rifting occurred at 140–120 Ma.Furthermore,metamorphic evolution from low T/P ratios in the subduction/collision stage to high T/P ratios in the intracontinental rifting stage needs 40–60 Myr in the Proto-Tethys domain but about 110 Myr in the Paleo-Tethys domain.For the two different orogenic domains,therefore,the convergent continental margins underwent a common tectonic evolution from warm collision/cold subduction to hot rifting,which starts from continental subduction/collision characterized by the formation of medium-P amphibolite to high-P granulite facies series or high-P to ultrahigh-P eclogite facies series in compressional regimes,through exhumation of the deeply subducted crustal rocks,and terminates with intracontinental rifting featured by highT to ultrahigh-T granulite facies series in extensional regimes.

A multi-objective antidisturbance robust filter for SINS/GPS navigation systems

Purpose-A full-order multi-objective anti-disturbance robust filter for SINS/GPS navigation systems with multiple disturbances is designed.Generally,the unmodeled dynamics,the external environmental disturbance and the inertial apparatus random drift may exist simultaneously in an integrated navigation system,which can be classified into three type of disturbances,that is,the Gaussian noise,the norm bounded noise and the time correlated noise.In most classical studies,the disturbances in integrated navigation systems are classified as Gaussian noises or norm bounded noises,where the Kalman filtering or robust filtering can be employed,respectively.While it is not true actually,such assumptions may lead to conservative results.The paper aims to discuss these issues.Design/methodology/approach-The Gaussian noises,the norm bounded noises and the time correlated noises in the integrated navigation system are considered simultaneously in this contribution.As a result,the time correlated noises are augmented as a part of system state of the integrated navigation system error model,the relative integrated navigation problem can be transformed into a full-order multi-objective robust filter design problem for systems with Gaussian noises and norm bounded disturbances.Certainly,the errors of the time correlated noises are estimated and compensated for high precision navigation purpose.Sufficient conditions for the existence of the proposed filter are presented in terms of linear matrix inequalities(LMIs)such that the system stability is guaranteed and the disturbance attenuation performance is achieved.Findings-Simulations for SINS/GPS integrated navigation system given show that the proposed full-order multi-objective anti-disturbance filter,has stronger robustness and better precision when multiple disturbances exist,that is,the present algorithm not only can suppression the effect of white noises and norm bounded disturbance but also can estimate and compensate the modeled disturbance.Originality/value-The proposed algorithm has stronger anti-disturbance ability for integrated navigation with multiple disturbances.In fact,there exist multiple disturbances in integrated navigation system,so the proposed scheme has important significance in applications.