Design and simulation-based performance evaluation of a miniaturised implantable antenna for biomedical applications

Micro & nano letters

article

Tajwar Abrar Aleef¹  Yeman Brhane Hagos¹  Vu Hoang Minh¹  Saed Khawaldeh¹  Usama Pervaiz¹ 

[1] University of Burgundy;University of Cassino;University of Girona

关键词: prosthetics;    biomedical telemetry;    microstrip antennas;    flexible electronics;    fats;    skin;    encapsulation;    microwave antennas;    bending;    encapsulation;    size 9.45 mum;    bending;    specific absorption rate;    radiation pattern;    return loss;    operating resonant frequency;    performance parameters;    CST Microwave Studio;    skin layer;    fat;    three-layer human tissue model;    simulation environment;    tiny antenna dimension;    operation band;    rectangular implantable flexible patch antenna;    state-of-the-art design;    RF telemetry;    implantable medical devices;    external device;    living body;    transmission link;    biomedical telemetry;    biomedical applications;    miniaturised implantable antenna;    simulation-based performance evaluation;   

DOI  :  10.1049/mnl.2017.0272

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Objective: To compare the effects of general and spinal anesthesia in patients undergoing elective Cesarean section in terms of neonatal outcome.Study design: Randomized control trial.Setting: This study was conducted in the department of anesthesiology, surgical intensive care and pain management nd department of Gynecology and Obstetrics, Peoples Medical College Hospital Nawabshah.Duration of study: June 2009 to December 2009. Subjects and methods: Patients in this study were admitted through obstetric OPD for lower segment Cesarean section. Patients were selected by simple random envelop draw method. Sample size were 160 patients, they divided in to two equal groups. Group A (N=80) patients underwent spinal anesthesia and Group B patients underwent general anesthesia. Immediately after delivery of the neonate, umbilical artery blood sample was taken for assessment of blood pH. Apgar score was assessed at 01 and 05 minutes and recorded on proforma. Anesthesia was labeledas effective i-e satisfactory if the Apgar score was 7 and above and blood pH 7.2 and above. Results: An Apgar score >7 was observed at 01 and 05 minutes in 78(97.5%) and 80 (100%) neonates respectively in group A while it was 60(75%) and 74 (92.5%) in group B neonates. Apgar score>7 was observed in signi cantly more neonates in group A as compare to group B (p =0.028). Average Apgar score at 01 and 05 minutes was also signi cantly higher in group A than group B; 8.04±0.82 vs 7.10±0.92 (p=0.0001) and 9.89±0.32 vs 9.34±1.07 respectively (p=0.0001).Umbilical artery blood pH>7.2 was observed signi cantly high in group A93.8% as compared to group B 83.8% (p=0.045). Also average pH was signi cantly high in group A than group B e.g. 7.38±0.15 vs 7.21±0.16 (p=0.017).Objective: To compare the effects of general and spinal anesthesia in patients undergoing elective Cesarean section in terms of neonatal outcome.Study design: Randomized control trial.Setting: This study was conducted in the department of anesthesiology, surgical intensive care and pain management and department of Gynecology and Obstetrics, Peoples Medical College Hospital Nawabshah. Duration of study: June 2009 to December 2009. Subjects and methods: Patients in this study were admitted through obstetric OPD for lower segment Cesarean section. Patients were selected by simple random envelop draw method. Sample size were 160 patients, they divided in to two equal groups. Group A (N=80) patients underwent spinal anesthesia and Group B patients underwent general anesthesia. Immediately after delivery of the neonate, umbilical artery blood sample was taken for assessment of blood pH. Apgar score was assessed at 01 and 05 minutes and recorded on proforma. Anesthesia was labeled as effective i-e satisfactory if the Apgar score was 7 and above and blood pH 7.2 and above. Results: An Apgar score >7 was observed at 01 and 05 minutes in 78(97.5%) and 80 (100%) neonates respectivelyin group A while it was 60(75%) and 74 (92.5%) in group B neonates. Apgar score>7 was observed in signi cantly more neonates in group A as compare to group B (p =0.028). Average Apgar score at 01 and 05 minutes was also signi cantly higher in group A than group B; 8.04±0.82 vs 7.10±0.92 (p=0.0001) and 9.89±0.32 vs 9.34±1.07 respectively (p=0.0001).Umbilical artery blood pH>7.2 was observed signi cantly high in group A93.8% as compared to group B 83.8% (p=0.045). Also average pH was signi cantly high in group A than group B e.g. 7.38±0.15vs 7.21±0.16 (p=0.017). Conclusion: Spinal anesthesia is associated with better neonatal out come as compared to general anesthesia inelective Cesarean sections Conclusion: Spinal anesthesia is associated with better neonatal out come as compared to general anesthesia inelective Cesarean sections.

【 授权许可】

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