A <span>wireless gigabit alliance (WiGig) is widely known for higher bandwidth which operates at 60GHz unlicensed spectrum for super-fast data speed over short distances for millimeter-wave band application. This study offers an efficient, compact microstrip patch antenna for WiGig with a lesser return loss -50.45 dB (60 GHz). The gain and directivity of the proposed antenna are 13.01 dB and 13.42 dBi. It provides higher efficiency of around 91%. The proposed antenna also covers another mm-wave band that is at 95 GHz. The U.S. military uses electromagnetic radiation of 95 GHz as a non-lethal weapon. So, the anticipated antenna can be used for a miniaturized active denial system. The proposed antenna has a good gain, directivity, and efficiency for the multigigabits/s data rate. The aforesaid properties imply that it can be used for wireless personal area networks (WPAN) and wireless local area network (WLAN) and fifth-generation (5G) applications too.</span>

To evaluate the analgesic efficacy of different doses of sufentanil combined with flurbiprofen axetil in children undergoing innominate osteotomy. Ninety children scheduled for elective innominate osteotomy under general anesthesia were enrolled and randomly divided into 3 groups. All the children received 1mg/kg flurbiprofen axetil intravenously before skin incision for pre-emptive analgesia. Patient Controlled Intravenous Analgesia (PCIA) was started at the end of the operation with the following composition: Sufentanil 1.5 g/kg and ondansetron 0.1 mg/kg in 0.9% NS 100ml (Group N1) sufentanil 2.0 g/kg and ondansetron 0.1 mg/kg in 0.9% NS 100ml (Group N2) and sufentanil 2.5 g/kg and ondansetron 0.1 mg/kg in 0.9% NS 100ml (Group N3). FLACC scores and Ramsay sedation scores were recorded at 2, 4 ,8 ,12 ,24 and 36h after the operation;the PCA button press number and side effects were observed and recorded. FLACC scores in group N1 were higher than group N2 and N3 (p<0.05).Ramsay scores in group N1 were lower than group N2 and N3 (p<0.05).There were no significant differences in FLACC scores and Ramsay scores between group N1 and N2 (p> 0.05).The incidence of side effects was significantly higher in group N3 compared with group N1 and N2 (p<0.05). Combined with 1mg/kg flurbiprofen axetil for preemptive analgesia , PCIA with sufentanil 2.0 g/kg and ondansetron 0.1 mg/kg in 0.9% NS 100ml may be an effective postoperative analgesia solution for children undergoing innominate osteotomy ,with less side effects. JCMCTA 2016 ; 27 (2) : 77 - 80

Biliary stones that are seen in the Asian population are very different from those seen in the west. It is frequent to see multiple, large, and impacted stones and a hugely dilated Common Bile Duct (CBD). Many of these patients have been managed by open cholecystectomy, even after the advent of Laparoscopic Cholecystectomy (LC) because these large stones pose significant challenges for extraction by endoscopic retrograde cholangio-pancreatography. This study represents an experience of managing intra and extra hepatic bile ducts using a laparoscopic approach. A retrospective data analysis was done during the period of November 2010-April 2015 and correspondingly 85 patients with documented intra and extra hepatic biliary stones were treated laparoscopically at Qilu Hospital under Shandong University, School of Medicine. There were 23 men and 62 women patients with age ranging from 23 to 76 years. The mean diameter of the CBD was 12mm. The number of stones extracted varied from 1 to 35 and the size of the extracted stones from 0.3X0.3X0.3 to 4X3.5X3.5 mm. The average duration of surgery was 170 min. There were 7 conversions to open procedures and 24 patients (29%) had nonfatal postoperative complications. Four patients had retained stones (4.7%). Though patients presented with multiple and impacted CBD stones, laparoscopy presents a unique approach for a minimally invasive procedure with its benefits in the form of laparoscopic intra and extra hepatic bile ducts exploration.   JCMCTA 2015 ; 26 (2) : 53 - 61

The cystic dilatation of the biliary tract is a rare disease and uncertain origin. It is recognized more frequently in children; however, its incidence comes increasing in adults, representing 20% of the cases. The aims of this study to demonstrate our experience with choledochal cyst and to evaluate morbimortality rates, discuss the aetiopathogenesis, presentation, management, and outcome with review of the literature. A retrospective study and review of the records of all the patients above 15 years, who underwent therapeutic intervention of choledochal cyst in Qillu Hospital of Jinan, China, was carried out. Ten cases of choledochal cyst were found, 8 female, with mean age 31 years. These included 8 cases of Todani type I and one case each of type II and type III. The predominant symptoms were abdominal pain and jaundice. Abdominal mass and past history of cholangitis and pancreatitis were seen in 2 patients. Investigations included ultrasound in 8 patients, CT in 7, ERCP in 3, and MRCP in 5. Surgical intervention included complete excision of the cyst with hepaticojejunostomy and cholecystectomy (Type I) excision of the diverticulum (Type II) and ERCP sphincterotomy (Type III). Malignancy was not seen in any patients. The long-term postoperative complications included cholangitis in two patients. Biliary tract cystic dilatation is a rare disease. However, its incidence is increasing in the adult population; so, it must be thought as differential diagnosis when facing obstructive jaundice.   JCMCTA 2015 ; 26 (2) : 67 - 72