Classification of Diabetic Retinopathy by Deep Learning

Diabetic retinopathy (DR), which is a leading cause of adult blindness, primarily affects individuals with diabetes. The manual diagnosis of DR, with the assistance of an ophthalmologist, has proven to be a time-consuming and challenging process. Late detection of DR is a significant factor contributing to the progression of the disease. To address this issue, the present study utilizes deep learning (DL) and transfer learning algorithms to analyze different stages of DR and precisely detect the condition. Using a large dataset comprising approximately 60,000 images, this study employs ResNet-101, DenseNet121, InceptionResNetV2, and EfficientNetB0 DL models to automatically assess the progression of DR. Images of patients’ eyes are inputted into the models, and the DL architectures are adapted to extract relevant features from the eye images. The study’s findings demonstrate that DenseNet121 outperforms ResNet-101, InceptionResNetV2, and EfficientNetB0 in accurately classifying the five stages of DR. The accuracy of the models was 97%, 96%, 95%, and 94%, respectively. These results underscore the effectiveness of DL in achieving an accurate and comprehensive classification of retinitis pigmentosa. By enabling accurate and timely diagnosis of DR, the application of DL techniques significantly contributes to the field of ophthalmology, facilitating improved treatment decisions for patients

Burden of non-communicable diseases in Tunisia, 1990-2017: results from the global burden of disease study

Introduction: non-communicable diseases (NCDs) are the leading cause of mortality and disability worldwide especially in developing countries such as Tunisia. We aimed to describe the national burden of non-communicable diseases in 2017 and to analyze disability-adjusted life year trends from 1990 to 2017 in Tunisia by cause and gender. Methods: we used Joinpoint regression analysis to assess trends of the age standardized disability-adjusted life year rate from 1990 to 2017 and to determine average annual percentage change. Results: non-communicable diseases accounted for 87.7% of total disability-adjusted life year in Tunisia in 2017. The five leading causes of this rate in Tunisia in 2017 were cardiovascular diseases, musculoskeletal disorders, neoplasms, mental disorders and neurological disorders. The trend of disability-adjusted life year rate of non-communicable diseases decreased significantly from 23403.2 per 100.000 (95% CI: 20830.2-26285.8) in 1990 to 18454.6 (95% CI: 15611.3-21555.4) in 2017, with a change of -0.9%; p=0.00. The decrease of the age standardized disability-adjusted life year rate concerned mainly cardiovascular diseases and neoplasms secondly. This decrease was more important in female (change=-1.1, p=0.00) in comparison to males (change=-0.7, p=0.00). On the other hand, the increase of the standardized disability-adjusted life year rate was related to musculoskeletal disorders, diabetes, kidney disorders and substance use disorders with a significant annual percentage change of 0.1%, 0.2% and 1.3% (p=0.00) respectively. Conclusion: the implementation of the national strategy is the key solution to mitigate the impact of non-communicable diseases in Tunisia

Patients’ experiences and satisfaction with health care in the Salah Azaiez Institute of Cancer in Tunisia in 2020

Measurement of patient-centered care is a key step to ensure quality of care improvement. The aims of this study were to evaluate the experience of hospitalized patients of Salah Azaiez Institute (SAI) of Cancer of Tunisia in 2020 and to analyze factors associated to the global satisfaction. It was a cross-sectional study. The used questionnaire was derived from the Picker patient questionnaire. Factors associated to the global satisfaction were assessed using Chi-squared and Fisher’s exact tests. The present study concerned 200 inpatients of the SAI. The Cronbach’s α of the patient experience test (PPE-15) was of 0.82 indicating a good internal consistency. According to results of this study, only 38.5% of the patients were satisfied with their hospitalization. Perception of the quality of the received treatment was good to excellent for 57.0%. Regarding the global organization, 56.5% of the patients found it intermediate and 21.5% perceived it as bad. The highest scores among patient experience dimensions concerned the coordination of healthcare, the respect for patient preference and the physical comfort. However, lowest scores were attributed to the involvement of family and friends, the information and patient education and the emotional support. Unlike socio-demographic factors, patient experience and its dimensions was strongly associated to the global satisfaction. Further studies are recommended to explore patient experience dimensions and other determinants of patient satisfaction in Tunisia. Experience Framework This article is associated with the Policy & Measurement lens of The Beryl Institute Experience Framework. (https://www.theberylinstitute.org/ExperienceFramework). Access other PXJ articles related to this lens. Access other resources related to this lens

Antibiotherapy management in respiratory infections in ambulatory in Tunisia

Acute respiratory tract infections are the commonest acute conditions managed in general practice and the main causes of antibiotic use. In Tunisia, the rates of antibiotic prescriptions remain high in general practice. In order to assess antibiotics prescribing practices of 23 general practitioners when facing an ENT or a respiratory tract infection, we conducted an observational study from February 1st, 2014 to November 25th, 2014. The study involved 374 patients, 45.6 mean age of years, among them 193 men (51.6%) and 174 (51.9%) with comorbidities. Tonsillitis, acute maxillary sinusitis and acute bronchitis are the main diagnosis, accounting for over 90% of ENT and respiratory tract infection. The diagnosis of these infections was based on clinical criteria, additional tests were prescribed for only 75 patients (20%). An antibiotic was prescribed for 360 patients (96.2%). β-lactams were the main prescribed class of antibiotics (58.3%). The antibiotic treatment was considered as inappropriate in 42.5% of prescriptions. The main causes were the prescription of amoxicillin-clavulanic acid during tonsillitis, non-antipneumococcal fluoroquinolones, when streptococci or streptococcus pneumoniae are presumed to be responsible for infection (tonsillitis, acute maxillary sinusitis, pneumonia), and unnecessary combination of antibiotics. A concomitant treatment was prescribed for 365 patients (97.6%). The most prescribed drugs were antipyretics (71.4%), corticosteroids (44.7%) and mucolytic (30.2%). The outcome was favorable in 333 cases (89%) and unfavorable in 26 cases (7.1%). The total average cost of an infectious episode was 79.776 ± 36.988 TND (45 ± 20 USD)., with a minimum and maximum values respectively 19.5 and 315.5 TND (35 to 558 USD). This study highlights the frequency of antibiotics prescription (96.2%) during supposed viral infections such as acute bronchitis, tonsillitis or when antibiotic prescription has to be debatable such as in acute otitis media, sinusitis maxillary or exacerbations of COPD. The over-use of antibiotics is an important concern in many countries of the region leading to emergence of bacterial resistance. National guidelines should be developed in order to promote rational use of antibiotics

Predictive factors of morbidity after surgical treatment of hepatic hydatid cyst

Introduction Surgery remains the basic treatment of hepatic hydatid cyst (HHC). However, it is associated with significant morbidity. The aim of our study was to evaluate mortality and morbidity of surgery of the HHC and to highlight the risk factors. Methods A retrospective study was conducted from January 1, 1996 to December 31, 2006. 391 patients hospitalized for HHC and operated in the Department of General Surgery “A” of the Rabta Hospital in Tunis, Tunisia. Results The overall mortality rate was 0.7% while the overall morbidity rate was 20.4%. About 16.6% suffered from specific complications, while 3.8% suffered from non-specific complications. Predictors of morbidity in a univariate analysis included cysts larger than 9 cm, dome cysts, cysts with bilious contents, type II, III, IV or V on ultrasound classification, fissured cysts and intrabiliary rupture of hepatic hydatid cyst. The multivariate study consisted of independent predictors of disease at the site of the liver dome, the cysto-biliary fistula and intrabiliary rupture of hepatic hydatid cyst Conclusion The hepatic hydatid cyst of the dome and the existence of preoperative complications in particular intrabiliary rupture of hepatic hydatid cyst are the main factors of morbidity. A better understanding of these factors allows the surgeon to choose the appropiate surgical technique that is associated with less morbidity.Pan African Medical Journal 2012; 13:2

Premature mortality attributable to smoking among Tunisian men in 2009

INTRODUCTION: Tobacco smoking is a significant public health threat in the world, a risk factor for many diseases, and has been increasing in prevalence in many developing countries. In this study, we aimed to estimate the burden of premature deaths attributable to smoking among Tunisian men aged 35-69 years in 2009. METHODS: The number of deaths attributable to smoking was estimated using the population attributable risk fraction method. Smoking prevalence was obtained from a nationally representative survey. Causes of death were obtained from the registry of the National Public Health Institute. Relative risks were taken from the American Cancer Society Prevention Study (CPS-II). RESULTS: Total estimated premature deaths attributable to smoking among men in Tunisia were 2601 (95% CI: 2268-2877), accounting for 25% (95% CI: 23.3-26.6) of total male adult mortality. Cancer, cardiovascular and respiratory diseases were the major causes of premature deaths attributable to smoking with 1272 (95% CI: 1188-1329), 966 (95% CI: 779-1133) and 364 (300-415) deaths, respectively. CONCLUSIONS: Tobacco smoking is highly relevant and is related to substantial premature mortality in Tunisia, around double that estimated for the region as a whole. This also has not decreased over the past 20 years. Urgent actions are needed to reduce this pandemic