The last decade has seen a rapid increase in the use of visual information leading to storage and accessibility problems. To improve human access, there must be effective and precise retrieval algorithm for the user to search, browse and interact with these collections in real time. In this paper we propose a trace transform based content based image retrieval algorithm (TTB-CBIR). The proposed algorithm applies trace transform which is robust to affine transform for feature extraction. Similarity measure is done using hamming distance. The TTB-CBIR algorithm is tested on corel database of images. The proposed algorithm shows optimum performance in terms of memory utilization and retrieval time.

Background and Aims: Gabapentin and pregabalin, by decreasing noxious stimulus induced excitatory neurotransmitter release at central nervous system, may attenuate central sensitization and eventually decrease development of postoperative pain. We evaluated preemptive analgesic efficacy of single dose of oral gabapentin 600 mg and pregabalin 75mg for postoperative pain in patients undergoing lower limb orthopedic surgery under spinal anesthesia. Material and methods: A prospective, randomized, double blind study was conducted on 70 patients aged between 18 to 60 years with ASA grade 1 and 2 posted for lower limb surgeries under spinal anaesthesia. Patients were allocated into Group A and Group B receiving oral gabapentin(600mg) and oral pregabalin (75mg) respectively 1.5 hours before surgery. Primary objective was assessing duration and quality of analgesia by Visual Analogue Scale (VAS) score at 2,4,6,8,10,12,16,20 and 24 hours.Secondary objective was to assess total dose of rescue analgesic in first 24 hours, perioperative hemodynamic change and various side effects. Statistical Analysis used: Categorical data was compared using Chi- square test. Quantitative parametric data was analysed using unpaired student t-test. P value < 0.05 was considered statistically significant. Results: Mean duration of analgesia in Group A (10.53 ± 2.686 hours) was longer than Group B (7.943±3.199hr) (P = 0.0006).Mean number of analgesic dosesrequired in first 24 hourswere less in Group A (1.429 ± 0.5021) ascompared to Group B (1.771±0.6897) (P = 0.0202).All patients remained hemodynamically stable with no significant side effects noted in either group. Conclusion: We conclude that preemptive analgesic efficacy of oral gabapentin 600mg is better in comparison to oral pregabalin 75 mg for patients posted for lower limb orthopedic surgeries under spinal anesthesia.

Background and Aims:Pain and PONV (postoperative nausea and vomiting) are common complaints in the period following surgery. A multimodal approach targeting the reduction of postoperative pain with an opioid-sparing analgesic along with an antiemetic medication would minimize opioid consumption and its associated side effects. We evaluated the efficacy of methylprednisolone 125 mg IV taken along with oral 120 mg etoricoxib on postoperative pain and PONV in patients undergoing laparoscopic surgeries Material and methods:A prospective, randomized, double-blind study was conducted on 70 patients aged between 18 and 60 years with ASA grade 1 and 2 posted for elective laparoscopic surgeries. The test group was given a combination of methylprednisolone 125mgIV (given just before induction)& etoricoxib120mg oral (given 1 hr before surgery). (Group A, n=35) while control group received normal saline IV and a placebo per oral(Group B, n=35). Duration and quality of analgesia was assessed by visual analogue scale (VAS) score at 2,4,6,8,10,12,16,20 and 24hr as primary objective. Total dose of rescue analgesic(injection Fentanyl 50 mcg) in first 24 hours, peri-operative hemodynamic change and post op nausea vomiting (PONV) were observed as secondary objective. Result:Demographic profiles were comparable. Duration of postoperative analgesia was significantly prolonged(p<0.05) in Group A(7.57±1.04hrs) as compared to Group B(3.05±0.5hrs). Group A showed a significant reduction in postoperative fentanyl consumption in the form of rescue analgesic(p<0.05). Group A also showed significant reduction in the incidence of PONV(p<0.05). Conclusion:We conclude that single-dose administration of methylprednisolone IV along with oral etoricoxib has better analgesic efficacy in comparison to placebo for patients undergoing laparoscopic surgeries.