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find Author "邓小燕" 7 results
  • 麻醉苏醒期患者恶心呕吐的观察及护理

    目的观察麻醉苏醒室(PACU)患者恶心呕吐的发生率,及时纠正患者的恶心呕吐。 方法将2012年9月-2013年7月全身麻醉手术后入PACU的18753例患者的恶心呕吐发生率及恶心呕吐处理前后的效果进行回顾性分析。 结果18753例麻醉苏醒期间患者中发生恶心呕吐者60例,发生率0.31%;其中最多的为腹部手术患者,占总发生数中的35.0%;处理后比处理前收缩压和舒张压均有明显改善(P<0.05),恶心呕吐症状明显缓解或消失。 结论对进入PACU的患者应进行全面评估并在PACU期间进行严密观察患者的病情及生命体征变化,及时发现、处理患者的恶心呕吐,保证患者在PACU期间的安全及舒适。

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  • 心血管生物力学:心血管疾病诊疗、预警的医工交叉解决方案

    Release date:2021-02-08 06:54 Export PDF Favorites Scan
  • 神经外科麻醉苏醒室的呼吸道管理和护理体会

    目的探讨神经外科麻醉苏醒室(N-PACU)麻醉苏醒期呼吸道管理及呼吸系统并发症的护理。 方法对2012年1月-2013年5月行颅脑神经外科手术的2 231例患者带气管导管术毕返回N-PACU进行观察记录,对麻醉苏醒期间出现的各种呼吸系统并发症及护理方法进行分析。 结果在麻醉苏醒期出现了124例低氧血症,发生率约为5%,所有患者经积极处理后均安全返回病房,无患者死亡。 结论N-PACU医护人员的谨慎观察和及时处理是保障患者安全渡过麻醉苏醒期的重要保障。

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  • 麻醉苏醒期血流动力学并发症的观察

    目的观察麻醉苏醒室(PACU)患者血流动力学并发症的发生率,及时纠正患者的高血压、低血压及心律失常等。 方法2012年7月-11月对全身麻醉手术后入PACU的8 440例患者资料进行回顾性统计,分析血流动力学并发症的发生率。 结果术后麻醉苏醒期高血压的发生率为4.6%(388/8 440),低血压的发生率为0.3%(22/8 440),心律失常的发生率为1.1%(89/8 440)。 结论对入PACU的患者应进行全面评估并在PACU期间严密观察患者的病情变化,以减少PACU并发症的发生,保证患者在PACU期间的安全复苏。

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  • Primary study on recognition of vascular stiffness based on wavelet scattering neural network

    Cardiovascular disease is the leading cause of death worldwide, accounting for 48.0% of all deaths in Europe and 34.3% in the United States. Studies have shown that arterial stiffness takes precedence over vascular structural changes and is therefore considered to be an independent predictor of many cardiovascular diseases. At the same time, the characteristics of Korotkoff signal is related to vascular compliance. The purpose of this study is to explore the feasibility of detecting vascular stiffness based on the characteristics of Korotkoff signal. First, the Korotkoff signals of normal and stiff vessels were collected and preprocessed. Then the scattering features of Korotkoff signal were extracted by wavelet scattering network. Next, the long short-term memory (LSTM) network was established as a classification model to classify the normal and stiff vessels according to the scattering features. Finally, the performance of the classification model was evaluated by some parameters, such as accuracy, sensitivity, and specificity. In this study, 97 cases of Korotkoff signal were collected, including 47 cases from normal vessels and 50 cases from stiff vessels, which were divided into training set and test set according to the ratio of 8 : 2. The accuracy, sensitivity and specificity of the final classification model was 86.4%, 92.3% and 77.8%, respectively. At present, non-invasive screening method for vascular stiffness is very limited. The results of this study show that the characteristics of Korotkoff signal are affected by vascular compliance, and it is feasible to use the characteristics of Korotkoff signal to detect vascular stiffness. This study might be providing a new idea for non-invasive detection of vascular stiffness.

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  • An optical coherent imaging system for measuring the strain of blood vessels

    We aimed to establish an optical coherence tomography (OCT) system to measure the strain of blood vessels. A general OCT system was constructed firstly and its reliability was confirmed by comparing the OCT imaging of the porcine coronary and the corresponding histological slices. The strain of the porcine coronary was induced by static flow pressure and correlation algorithm was used to calculate the strain field of blood vessels within OCT images. The results suggest that bright-dark stratification of blood vessels displayed in OCT images is consistent with the intima and media layers of histological image. Furthermore, the strain of media layer is greater than that of the intima layer under the same static pressure. The optical coherence imaging system could not only measure the histological structure of the blood vessels, but also qualify the vessel strain under flow pressure.

    Release date:2017-10-23 02:15 Export PDF Favorites Scan
  • Biomechanical research progress on sex differences of abdominal aortic aneurysm

    The phenomenon of sex differences exists in patients who have abdominal aortic aneurysms (AAA). The occurrence rate of AAA is higher in male, while the rates of rupture and postoperative mortality are higher for female. This phenomenon of sex differences would affect the diagnosis, treatment and postoperative rehabilitation for AAA patients. This article reviewed the recent research status of sex differences on AAA, and explored the phenomenon of sex differences from the aspects of threshold determination, biomechanics and mechanobiology. This review points out that the sex differences on AAA could ascribe to the differences of biomechanical environment and biological properties induced by the vascular size, anatomy structure and structure components of abdominal aortic artery. The comprehensive investigations of the sex differences on AAA could help to optimize the diagnosis, treatment and device design, patient care and rehabilitation strategy of AAA based on sex differences phenomenon.

    Release date:2019-02-18 02:31 Export PDF Favorites Scan
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