Tunisie Medicale最新文献

Introduction: Urinary tract infection is the leading cause of nosocomial infection worldwide. It is a factor in the progression of chronic kidney disease.

Aim: To determine the epidemiological, clinical, microbiological, therapeutic and evolving profile of patients with chronic kidney disease and urinary tract infection.

Methods: This was a retrospective, descriptive study lasting 5 years, from January 2014 to december 2018 in chronic kidney disease with urinary tract infection.

Results: Fifty-one patients (7.15%) were retained with a mean age of 53.03 years and a sex ratio of 0.55. Chronic kidney disease was in end-stage in 45.1% (n=23). Cystitis was found in 49.02% (n=25) and gram-negative bacilli were found in 74.50% (n=38), predominantly Escherichia coli (54.90%). Third generation of cephalosporins and fluoroquinolones were frequently prescribed as probabilistic antibiotics. Resistance to beta-lactam antibiotics was 50% for Escherichia coli. Factors influencing severe infection were: advanced age, male gender, urinary lithiasis, multiple antibiotic resistance and non-enterobacterial germs.

Conclusion: Urinary tract infection in chronic kidney disease were frequent and particularly severe.

Aim: The study aimed to compare long-term vaccine-induced humoral immunity following different vaccines regimens.

Methods: Anti-S-RBD total antibody levels were measured in blood samples of 167 participants nearly 6 months post-vaccination. Participants had received one; two or four doses of Pfizer vaccine or who received a third dose of mRNA vaccine (Pfizer) and primed with mRNA (Pfizer/Moderna), adenoviral (AstraZeneca/Jonson & Jonson) or inactivated (CoronaVac/Sinopharm) vaccine.

Results: Among all vaccination regimens, fourth dose of Pfizer achieved the highest S-RBD antibody titers. Nevertheless, the third dose of mRNA vaccine primed with adenoviral vaccine achieved the lowest titers of S-RBD antibody. Notably, the group that received a third dose of mRNA primed with two doses of mRNA vaccine exhibited higher S-RBD antibody compared to groups inoculated with a third dose of mRNA and primed with inactivated or adenovirus vaccine.

Conclusion: Our data showed the superiority of three mRNA vaccinations compared to third heterologous vaccine (inactivated of adenoviral) including mRNA as booster in terms of humoral immunogenicity. Our findings supporting the use of additional booster shot from a more potent vaccine type such as mRNA vaccines. Nevertheless, due to the limited number of subjects, it is difficult to extrapolate the results of our study to the whole of Tunisian population. Future studies should investigate a larger cohort and other potential correlates of protection, such as cellular immunity and how it is affected by different vaccination schemes after long-term post-vaccination.

Introduction: In response to the important influx of critically ill patients as well as resources limitation, simulation would be a tool ensuring the continuum of medical training.

Aim: To assess the impact of simulation training on both education and performance related to protocol development during COVID-19 pandemic, in critical care.

Methods: This scoping review was written in accordance with the PRISMA Guideline. Data sources and studies were identified by searching "MEDLINE", "Cochrane library" databases and "Clinical trial.gov". Study inclusion adhered to the PICO criteria: Population, Intervention, Comparison, and Outcomes. The Kirkpatrick Model, is a tool for evaluating the level of impact of training results according to four levels Results: The search algorithm yielded sixteen articles of which eight were meeting criteria for inclusion and finally seven were available. The number of participants ranged from 12 to 108 with a median of 61 (IQR: 8-76). The length of intervention ranged from 12 min to three hours with a median of 38 min (IQR: 12-135). Studies reported that incorporating simulation yields a more pronounced impact compared to theoretical and clinical training alone in enhancing knowledge and confidence. Regarding the role of simulation in protocol development, results have shown that in the pre-test, all the participants failed donning and doffing Personal Protective Equipment (PPE), the mean cognitive load was high (7.43±0.9 points) and the performance was low (2.5±0.8) while in the post-test, 100% of participants were successful in donning the PPE, the mean of the cognitive load decreased (4.1±1.4 points), and the performance substantially increased (7.9±1.1). In addition, five studies showed behavioral changes after training and thus the simulation reached Kirkpatrick level three.

Conclusion: Results supported the impact of simulation, in critical care, as an effective method to enhance knowledge and confidence, and to improve protocol development during pandemics such as COVID-19.

Tuberculous meningitis, a severe form of tuberculosis caused by Mycobacterium tuberculosis (BK), remains a major public health challenge worldwide. In addition to the complex mechanisms of the innate and adaptive immune response against Mycobacterium tuberculosis, there is a crucial genetic dimension to consider. Individuals with specific genetic variations may have altered immune responses that make them more susceptible to this form of tuberculosis. Genetic mutations in genes encoding surface receptors, adaptor proteins, kinases, transcription factors, nucleic receptors and other molecules involved in cellular interactions and molecular mechanisms have been associated with susceptibility to TB. Understanding the molecular mechanisms of immune interactions in host response to Mycobacterium tuberculosis is crucial to understanding the genetic dimension in susceptibility to tuberculosis, particularly its dreaded form of tuberculous meningitis. The aim of this update is to explore in details the key interactions between the main players in innate and adaptive immunity during infection with Mycobacterium tuberculosis, with particular emphasis on the genetic factors associated with susceptibility to tuberculosis, especially its dreaded form of tuberculous meningitis.

Background: dermatophytoses are a current fungal infection, caused by keratinophilic fungi (dermatophytes) able to invade the nails, hair and skin of humans and animals.

Aim: the aim of this study was to establish the epidemiological and mycological profile of dermatophytes isolated in the parasitology-mycology laboratory of the Mohammed VI University Hospital in Oujda.

Methods: this is a 48-month retrospective study from January 2019 to December 2022.The study includes samples taken or sent to our parasitology-mycology laboratory for mycological study. A direct examination and culture were performed on each biological specimen. Species identification was based on macroscopic and microscopic colony criteria.

Results: in the present report we reviewed 950 mycological samples. Dermatophytes were isolated in 505 (53.15%) cases. The most common infections were tinea unguium (n=353; 69.90%), followed by tinea corporis (n=123; 5.74%) and tinea capitis (n=29; 5.98%). Trichophyton rubrum was the most frequently incriminated species.

Conclusion: dermatophytes are the most frequent mycoses in humans. They are generally benign and often develop in a chronic and frequently recurrent pattern. Mycological examination is essential. It confirms the fungal origin and isolates the species responsible, in order to identify the source of contamination and implement an appropriate treatment.

Introduction: Endocarditis associated with medical care is a rare and serious entity. The risk of occurrence is increased in hemodialysis patients due to the immunosuppression and the multiplicity of vascular accesses of different kinds. The mode of revelation can be variable given the diversity of symptoms it causes. Herein, we describe the case of endocarditis associated with medical care in a patient with renal failure who presents with neurological symptoms.

Observation: A 38-year-old patient with a history of kidney disease in the hemodialysis stage presented to the emergency room with altered neurological status in the context of fever. The patient's condition requires airway control, sedation, and vasopressor medication. Brain imaging revealed Fisher 4 subarachnoid hemorrhage with brain turgor. Transthoracic and transesophageal cardiac ultrasound exploration revealed infective mitro-aortic endocarditis with trigonal abscess fistulized in the left ventricle and destruction of the aortic valve with massive regurgitation. The additional imaging in a second step did not highlight any images of mycotic aneurysm. The indication for early surgery was not approved given the hemodynamic instability and the poor intracerebral hemodynamics demonstrated by transcranial doppler ultrasound. The initial outcome under antibiotic treatment and renal replacement was favorable. But the subsequent course was fatal due to septic shock with multiple organ failure.

Conclusion: The diagnosis of infective endocarditis should always be considered in hemodialysis patients presenting in a septic state with signs of systemic involvement. It is a source of mortality in these debilitated patients.

Introduction: According to the World Health Organization, Microscopy is the gold standard for diagnosing malaria. However, the performance of this examination depends on the experience of the microscopist and the level of parasitemia. Thus, molecular biology detection of malaria could be an alternative technique.

Aim: evaluate the contribution of molecular biology in detecting imported malaria.

Methods: This was a descriptive, prospective study, including all students, from the Monastir region, and foreigners, from countries endemic to malaria. The study period was from September 2020 to April 2021. Each subject was screened for malaria by three methods: direct microscopic detection of Plasmodium, detection of plasmodial antigens, and detection of plasmodial DNA by nested PCR.

Results: Among the 127 subjects screened, only one had a positive microscopic examination for Plasmodium falciparum. Among the 126 subjects with a negative microscopic examination, twelve students had a positive nested PCR result, i.e. 9.5%. Molecular sequencing allowed the identification of ten isolates of Plasmodium falciparum, one Plasmodium malariae and one Plasmodium ovale. Our study showed that the results of nested PCR agreed with those of microscopy in 90.6% of cases.

Conclusion: Nested PCR seems more sensitive for the detection of low parasitemias. Hence the importance of including molecular biology as a malaria screening tool to ensure better detection of imported cases.

Introduction: Sarcopenia is a clinical condition defined as low skeletal muscle mass and function. It has been identified and described as a geriatric syndrome, but it may arise in individuals with obesity at any age.

Aim: screen for sarcopenia in obese adults and identify the nutritional, clinical and biological risk factors associated with the development of sarcopenic obesity (SO+).

Methods: Descriptive cross-sectional study, including 53 obese patients. Screening for sarcopenia has been established according to pathological thresholds proposed by the European Society for Clinical Nutrition and Metabolism (ESPEN) and the European Association for the Study of Obesity (EASO).

Results: Mean age was 44.34±13.51 years. Prevalence of Sarcopenia was 7.5% (SO+). The average intakes of calorie, lipids and saturated fatty acids were higher in SO+. A statistically significant relationship was found between low skeletal muscle mass (SMM/W) and the average intake of vitamin PP (p=0.014) and vitamin B9 (p=0.009). Mean BMI (45.86 kg/m² for SO+ versus 39.29 kg/m² for SO-; p=0.03) and mean visceral fat (16.55 l for SO+, versus 10.93 l for SO-; p=0.043) were significantly higher in SO+. A statistically significant relationship was found between insulin resistance and low (SMM/W), as attested by mean insulinemia (28.81 µIU/mL for low SMM/W, versus 14.48 µIU/mL for normal SMM/W; p=0.004) and HOMA index (7.94 for low SMM/W, versus 3.49 for normal SMM/W; p=0.002), which were higher in cases of low (SMM/W).

Conclusion: We recommend promoting a balanced, low-energy-density diet to improve insulin sensibility and thus reduce the risk of sarcopenia. Regular physical activity is also strongly recommended.

Introduction: there is a lack of research evaluating the impact of therapeutic switching from human insulin to analogues, particularly in paediatric populations from low- and middle-income countries.

Aim: The study aimed to retrospectively assess the effectiveness and safety of transitioning from human insulin to insulin analogs in Tunisian children with diabetes.

Methods: This retrospective descriptive study included children with type 1 diabetes who changed their insulin therapy protocol after at least one year of treatment with human insulin. Clinical, therapeutic, and glycaemic homeostasis parameters were assessed following the transition from human insulin (NPH + rapid-acting insulin) to the Basal-Bolus insulin analog- protocol.

Results: The study included 60 patients. Following the switch, all patients showed a significant reduction in mean fasting blood glucose levels (11.11 mmol/l vs. 8.62 mmol/l; p=0.024). Glycated haemoglobin A1C levels decreased notably in children who adhered to their diet (from 9.93% to 8.38%; p=0.06) and/or engaged in regular physical activity (from 10.40% to 8.61%; p=0.043). The average number of hypoglycemic events per year decreased from 4.03 events/year to 2.36 events/year (p=0.006), along with a decrease in the rate of patients hospitalized for acid-ketotic decompensation (from 27% to 10%; p=0.001). Financial constraints led to 82% of patients reusing microfine needles ≥2 times per day, and 12% were compelled to revert to the initial insulin therapy protocol due to a lack of access to self-financed microfine needles or discontinued social coverage.

Conclusions: Although insulin analogues offer clear benefits, their use poses challenges as a therapeutic choice for children with diabetes in low- to middle-income countries. These challenges hinder the achievement of optimal glycemic control goals.

Introduction: Facial gunshot wounds have devastating functional and aesthetic consequences for the patient. If associated with penetrating craniocerebral injuries, the prognosis is rather compromised even with appropriate medical and surgical treatment. Chop-off injuries with penetrating wounds constitute a challenging situation for the facial reconstructive surgeon in facial trauma.

Observation: This case involved a 49-year-old man who sustained an accidental facial shot from a pellet gun. Radiological and clinical investigations revealed complex ballistic trauma to the maxillofacial region, with projectiles reaching the base of the skull. One of the projectiles migrated via the carotid canal towards a cerebral artery, leading to obstruction of the artery with cerebral infarction. An autopsy was performed which evaluated that the shooting distance was compatible with a long distance, causing the dispersion of lead grains with the absence of a wad inside the trauma site.

Conclusion: In some cases of facial gunshot wounds, despite a complex and extensive lesion assessment, death may occur due to a neurological complication rather than sustaining hemodynamic shock, depending on the trajectory of the projectiles.