Background: Myringoplasty is one of the surgical techniques for the management of chronic suppurative otitis media with permanent perforation of tympanic membrane. It is defined as simple surgical repair of tympanic membrane perforation without doing ossicular reconstruction.
Objective: To determine the success rate of myringoplasty and to examine whether the hearing improvement is a potential indication for surgery.
Materials and Methods: This study was conducted in the Department of Otorhinolaryngology and Head and Neck Surgery, Shaheed Suhrawardy Medical College Hospital from January 2017 to December 2017 and 100 patients who underwent myringoplasty in this period were analyzed. A total of 100 patients with dry central tympanic membrane perforations of various sizes were included in this study.
Results: Myringoplasty was performed in total of 100 patients. Male were (45%) and females were (55%). Twenty one (7%) of them belonged to age group of 10-20 years, 31 (31%) were in the age range of 21-33 years, 38(38%) were the age range 31-40 years while 24 (24%) aged between 41-50 years with mean age of 26.32 ±S.D 9.59 years. Overall success rate of graft uptake was noted in 88 (88%) out of 100 cases.
Conclusion: Myringoplasty is a safe surgical procedure in achieving intact tympanic membrane and to improve the hearing loss. Therefore, underlay technique being technically simple should be preferred, but the ultimate decision about the technique to be employed depends on the surgeons preference and the site of perforation.
J Shaheed Suhrawardy Med Coll, December 2018, Vol.10(2); 99-102
Introduction: The seronegative arthritis is a heterogeneous group of inflammatory rheumatic diseases with predominant involvement of axial, peripheral joints and enthesitis. All of these have some distinct as well as some overlapping features, characteristic peripheral asymmetrical lower limb involvement and a negative rheumatoid factor. Involvement of joints is usually oligoarticular but rarely polyarthritis may be present. Diagnosis is usually made from clinical features rather than investigations.
Objective: To evaluate the seronegative arthritis clinicopathologically by collecting and analyzing the relevant informations.
Materials and Methods: A descriptive cross-sectional prospective study was conducted at Combined Military Hospital, Chittagong from November 2015 to October 2016. A total 74 patients of suspected seronegative arthritis were included. Detail socio-demographic data were collected from the informant and recorded in structured case report form. Clinical examination and relevant investigations were done meticulously to confirm the aetiology of seronegative arthritis.
Results: Maximum number of patients was in the 3rd to 4th decade (62.1%), mean age of the patient was 37.4±8.7 and 38.7±8.1 years in male and female respectively. Malefemale ratio was 2.65:1. Symmetrical sacroiliitis was found in 15(20.2%) patients, asymmetrical sacroiliitis in 36(48.6%) and in 23(31.2%) cases sacroiliac joint was not involved. Common aetiology for seronegative arthritis showed that, reactive arthritis recognized in majority of patients 29 (39.1%) and second most common cause was seronegative rheumatoid arthritis in 23(31%) patients.
Conclusion: The Seronegative arthritis is a social, economical and health-care burden. Patients who develop 66 JAFMC Bangladesh. Vol 12, No 2 (December) 2016 arthritis have high disability, discomfort and loss of quality of life. Seronegative arthritis is an interesting group of related conditions with overlapping features and genetic and familial association. That may alert the primary care physician to attain possible diagnosis of spondyloarthritis and to consider a rheumatological opinion.
Journal of Armed Forces Medical College Bangladesh Vol.12(2) 2016: 66-70
This paper work involves bunch experiments to investigate the effect of contact time, pH, and adsorbent dose on the extent of adsorption by bio-composites. Adsorption capacity of Chromium (VI) onto chitosan coated with banana and areca fiber was investigated in a batch system by considering the effects of various parameters like contact time, initial concentration, pH and adsorbent dose. The chitosan and fibers (banana and areca) were then cross-linked with glutaraldehyde to remove chromium [Cr (VI)] from water via static adsorption. It was found that optimum chromium absorption capacity of chitosan was assessed at pH of 2.5 to 4.5 and contact time of 30 to 180 minutes for raw banana and areca fiber and for chitosan treated banana & areca fiber. Though optimum adsorption of chromium of chitosan was measured 34.17 ppm (85.42%) from a 100 ml solution containing 40 parts per million (ppm) of Cr (VI) at 120 minutes, pH of 3.0 and 120 milligram (mg) adsorbent dose size, use of composite will be more favorable in the point of environmental concern as well as low cost because chitosan preparation is comparatively costly then banana and areca fiber. On the other hand, untreated banana and areca fiber optimum adsorption of chromium measured 3.65 ppm (9.1%) at 180 min and, pH of 4.5 and 140 mg adsorbent dose size and 3.76 ppm (9.4%) at 180 min, pH of 4.5 and 160 mg adsorbent dose size respectively. In case of chitosan treated banana fiber, it was observed that adsorption was increased from 17.664 to 30.057 (75.14%). On the other hand, for areca fiber with chitosan, it was observed that adsorption was increased from 21.664 to 30.156 (75.39%) ppm. The Langmuir and Freundlich adsorption models were used for the mathematical description of the adsorption of chromium ion onto composites and it was found that the Langmuir adsorption isotherm was more fitted models which mean that a monolayer adsorption surface was created. After analyzing from IBM SPSS 25 software, we got the standard deviation value of adsorbed Cr by raw chitosan, untreated banana and areca of pH test results were 9.399, 1.072, 0.728 ppm, time test results were 2.163, 0.859, 0.896 ppm and adsorbent dose test results were 6.588, 0.966, 1.211 ppm correspondingly. The standard deviation results of pH, time and amount of treated banana fiber test results were 1.831, 2.693 and 5.469 ppm congruently. On the other hand, the standard deviation results of pH, time and amount of treated areca fiber test results were 3.293, 2.673 and 4.152 ppm individually. Fourier transform infrared (FT-IR) spectroscopy analysis indicated that both amino and hydroxyl groups of chitosan, banana and areca fiber were engaged in the adsorption.
Small arms shooting practices and competitions are routine activities in the military domain. The shooting group or bullet group analysis serves as a metric for the precision of a weapon, the shooter's accuracy, and consistency, and as a method for improving or refining one's shooting abilities. This analysis mechanism, however, is either manual or semi-automatic, employing image processing-based algorithms such as template matching, histogram equalization, white balancing, median and gaussian altering, peak detection, and image subtraction in an indoor setting, which is incapable of adapting to environmental conditions such as humidity, temperature, ambient light, wind speed, and rain, among others. Recent advancements in artificial intelligence or deep learning techniques explored ways to facilitate automation in various sectors. In this paper, we have used such deep learning approaches to automize the shooting system in real-time within a military domain and achieved success in resolving the traditional image processing drawbacks. Our proposed methodology has two phases. The first phase uses Mask R-CNN a conceptually simple, flexible, and general framework for object instance segmentation to extract the target region from the environment, and in the second phase, we fed the output segmented target of the first phase to ResNet-50 a convolutional neural network architecture to detect the bullet holes. Several experiments have been conducted on real-time datasets and the results show 0.87 of average precision using mask R-CNN to segment the target and ResNet-50 give 0.80 to detect bullet holes.
Polymyositis is a rare rheumatologic disorder. Exact cause is unknown but autoimmunity, genetic and environmental factors like infection and drugs may be responsible. It may be a primary autoimmune disease, associated with other autoimmune diseases or underlying malignancy. There is two-way relationship between polymyositis and malignancy. Patients with polymyositis and dermatomyositis has increased chance of various malignancies. On the other hand polymyositis and dermatomyositis may be a paraneoplastic manifestation of some malignancies like carcinoma lung, ovary, breast, pancreas, colon, lymphoma, MDS and myeloproliferative disorders. We have diagnosed a case of polymyositis in a patient of Myelofibrosis (MF). The patient presented with inflammatory myopathy affecting proximal muscles of the limbs, neck muscles, laryngeal and pharyngeal muscles. Muscle enzymes were markedly elevated, EMG and MRI were in favour of inflammatory myopathy. Muscle biopsy showed inflammatory infiltrates in muscles mostly by T- cells with myonecrosis, degeneration and regeneration without vasculopathy and perivascular change. Primary polymyositis and other autoimmune diseases were excluded by absence of relevant autoantibodies. So he was diagnosed as a case of paraneoplastic polymyositis.
Journal of Armed Forces Medical College Bangladesh Vol.15 (1) 2019: 116-118
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