Configuration improvement for micropressure sensor with vibration interference

Micro & nano letters

article

Zhongliang Yu¹  Yulong Zhao¹  Lili Li¹  Bian Tian¹  Rongjun Cheng¹  Cun Li¹ 

[1] State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University

关键词: microsensors;    pressure sensors;    vibration measurement;    interference;    piezoresistive devices;    diaphragms;    stress measurement;    finite element analysis;    convex programming;    micromachining;    silicon;    elemental semiconductors;    vibration interference;    piezoresistive absolute micropressure sensor;    performance factor;    PF;    quantitative index;    acceleration interference;    resonant frequency;    flat diaphragm;    stress distribution;    finite element method;    multivariate fitting;    ANSYS simulation;    surface stress equation;    optimisation;    MATLAB;    convex corner undercutting analysis;    silicon bulk micromachining;    altimetry;    Si;   

DOI  :  10.1049/mnl.2014.0236

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background & Objectives: Caudal epidural block is one of the safe, reliable and effective technique in pediatric patients but single shot caudal epidural block has short duration of analgesia that can be prolonged by addition of adjuvants like opioids, clonidine, neostigmine, ketamine orα2 agonists along with local anesthetic agents. This prospective randomized study was conducted to assess the efficacy of addition of dexmedetomidine (1µg/kg) to caudal 0.25% ropivacaine (1ml/kg) for postoperative analgesia.Methodology: Sixty American Society of Anesthesiologists grade I and II pediatric patients aged 6 months to 6 years were randomly allocated into two groups with 30 patients in each group: Group R (n = 30) received caudal 0.25% ropivacaine 1 ml/kg and normal saline (0.5 ml) while Group RD received caudal 0.25% ropivacaine 1 ml/kg + dexmedetomidine 1 μg/kg (0.5 ml). Postoperative pain (FLACC pain score), duration of analgesia, rescue analgesic requirement, postoperative sedation scores, and hemodynamic changes along with complications were recorded.

【 授权许可】

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