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Percutaneous mitral commissurotomy (PMC) is the alternative treatment of choice for mitral stenosis (MS). Its immediate and medium term results are comparable to those of surgical commissurotomy, however in the long term there is a risk of restenosis. The purpose of this study is to determine the factors predicting restenosis after PMC. Three hundred and twenty-two patients (66% women), average age: 35 ± 13 years (9–75 years) having a tight MS and treated by PMC with Inoué balloon. The anatomic aspect of the mitral apparatus before PMC has been studied according to the criteria of the Wilkins score with a concomitant study of the state of mitral commissures. The primary success of PMC is defined as follows: mitral area (MA) post-PMC >1,5 cm2 and gain in MA > 25% and mitral regurgitation (MR) ≤ grade 2. Mitral restenosis is defined as a MA < 1,5 cm2 and/or loss > 50% of initial gain in MA. The rate of primary success of PMC was 86% and mean MA post PMC was 1,82 ± 0,33 cm2 compared to MA pre-PMC of 1 ± 0,18 cm2 (P < 0.0001). Opening of two commissures has been observed in 74% of patients. After an average period of 62 ± 32 months, only 12% of patients had a dyspnea stage III-IV of NYHA, MA was 1,64 ± 0.3 cm2 (P < 0.001) and mitral restenosis happened in 47 patients (20%) after a period of 60,48 ± 27 months (22–124 months). The independent predictors of mitral restenosis after a successful PMC were: previous surgical commisurotomy, Wilkins score > 8, MA after PMC < 1,8 cm2 and absence of bicommissural opening post PMC. A favorable anatomy of mitral apparatus and the optimisation of immediate result of PMC are the guaranty for the maintain of good result in the long term. [ABSTRACT FROM AUTHOR]

Concrete pipes represent the backbone of the municipal storm and wastewater collection systems of Ontario, Canada. Industry and academia partnered on a research effort that aimed at developing new precast-concrete pipe products that provide added value to the final user in comparison with existing products. This paper describes a full-scale experimental evaluation of the design, manufacturing, and performance aspects of a "cellular" concrete pipe, a precast concrete pipe in which multiple continuous conduits were incorporated within its wall. Two fully-instrumented prototype segments of the proposed cellular concrete pipe were manufactured using standard dry-cast manufacturing procedures. The pipe segments were subjected to a D-load test to evaluate their structural performance. The observed structural performance was found to be comparable to solid-wall specimens, particularly when a four-conduit configuration was used. Of the six materials used as conduits, PVC and aluminum were found to perform the best. The presence of the conduits appears to delay the on-set of major cracks, thus increasing the D-load value. [ABSTRACT FROM AUTHOR]

The precast concrete pipe industry is in continuous pursuit to add value to its products to strengthen its market competitiveness against other pipe products. The research reported in this paper aimed at developing a new class of precast concrete pipes that will provide added value to the final user in comparison with existing products. The technology developed by the authors consists of lenses of a porous material that are used to create "conduits" within the wall of a precast concrete pipe, which are continuous across adjacent segments. These conduits can accommodate telecommunication lines (i.e., fibre optics) and other small diameter utilities. The concrete pipe provides protection for the smaller conduits while conserving underground right-of-way space. This paper describes the results of an extensive numerical study undertaken to evaluate the technical viability of the proposed conduit system. [ABSTRACT FROM AUTHOR]

The usefulness of the electrical resistivity method for characterization of contaminated sites has been studied in many ways. The most commonly used device is a cone penetrometer that utilizes two or four electrodes to measure electrical resistivity (or conductivity) during a cone penetration test (CPT) along a vertical or horizontal alignment. This paper introduces a new miniature resistivity probe (MRP) that can potentially be deployed from a sampling platform to detect contaminant plumes prior to collecting soil samples. Following bench-scale tests aimed at quantifying the sensitivity of the MRP to various operating and environmental parameters, the response of the MRP in sandy soil containing various concentrations of four heavy metals (Cu, Zn, Pb and Ni) and two hydrocarbons (phenol and gasoline) is evaluated. The test data revealed that the MRP has the potential to serve as an indexing tool for rapidly delineating contaminant plumes where heavy metals are present. The results for hydrocarbons were less conclusive, ranging from moderate ability to differentiate contaminated and non-contaminated soils for phenol to poor differentiation ability for gasoline. [ABSTRACT FROM AUTHOR]

Several studies have suggested a circadian and septadian pattern of incidence of sudden cardiac death with a morning peak and a Monday peak. To analyze the circadian and septadian pattern of occurrence of sudden cardiac death in the eight northern Tunisian governorates. We prospectively collected epidemiological and autopsy data of sudden cardiac death victims occurring in the northern region of Tunisia between January 2013 and December 2019. The population included 1834 men (79.6%) and 468 women (20.4%) with a mean age of 56.5 ± 14 years. Smoking (53.9%) was the most prevalent cardiovascular risk factor. One-fifth (20.9%) of victims had known heart disease, and 3% had a family history of sudden death. ischemic heart disease was the leading cause of sudden death (46.8% of cases). One- fourth (25.7%) of autopsies were negative. Analysis of the circadian pattern of occurrence of sudden cardiac death identified a peak (36.1%, p < 0.001) between midnight and 6 am. This nocturnal excess mortality was significant (p < 0.001) and independent of sex (34.1 % in men and 43.8 % in women) and cause of death (39.3 % of cases of sudden ischemic death and 33.3 % of cases of nonischemic death). Moreover, there was a significant septadian variability in the occurrence of sudden death (p : 0.0015), with a peak on Friday (15.8 %, p : 0.042). This study showed a peak of sudden death between midnight and 6 am, and on Fridays, confirming the modification of the classic circadian and septadian pattern of sudden death occurrence. These results may help optimize the deployment of emergency mobile teams and structures during the most vulnerable periods. [ABSTRACT FROM AUTHOR]

La mort subite d'origine cardiaque demeure un problème majeur de santé publique. Certaines études épidémiologiques suggèrent une différence entre les deux sexes en termes de cause et des circonstances du décès. L'objectif de ce travail était d'étudier la différence entre les deux sexes et les spécificités féminines dans la mort subite en termes d'incidence, de cause et de circonstances de survenue. c'est une étude prospective et autopsique, portant sur les victimes de mort subite d'origine cardiaque survenues dans la région du nord de la Tunisie entre janvier 2013 et décembre 2019. Nous avons recueilli les données cliniques, anatomiques, les circonstances du décès, ainsi que la symptomatologie accusée par la victime au cours des 24 dernières heures précédant la mort. Une analyse de la variation circadienne, hebdomadaire et mensuelle des décès à été également effectuée. La population étudiée comprenait 1834 hommes et 468 femmes avec un âge moyen comparable (56,3 ± 13,8 ans chez les hommes et de 57,2 ± 15,8 ans chez les femmes p : 0,26). Les facteurs de risque cardiovasculaire traditionnels et une dyspnée isolée précédant le décès étaient plus fréquemment constatés chez les femmes (15,6 % versus 8,1 %, p < 0,001). Par ailleurs, le décès était survenu plus fréquemment à domicile chez les femmes et dans un lieu publique ou en milieu du travail chez les hommes. Les cardiopathies ischémiques étaient les causes de décès les plus fréquentes chez les hommes et une autopsie blanche avec un cœur structurellement normal à l'examen était plus fréquente chez les femmes (34 % versus 23,6 %, p < 0,001). Un excès de mortalité nocturne chez les femmes a été enregistré entre minuit et 6 heures du matin (43,8 % contre 34,1 % chez les hommes, p < 0,001), en revanche la distribution hebdomadaire et mensuelle des décès était comparable avec en particulier un pic de mortalité hivernale enregistré dans les deux sexes. Il existe une spécificité féminine dans le domaine de la mort subite, avec une mortalité coronarienne moins importante et un taux d'autopsie blanche plus élevé chez cette population. Le décès survenait plus fréquemment à domicile avec une surmortalité nocturne par rapport aux hommes. Sudden cardiac death is a major public health problem. Epidemiological and clinical differences according to gender have been described in sudden cardiac death. The aim of this study was to examine the gender differences between autopsy findings and circumstance of occurrence associated with sudden cardiac death. We prospectively collected epidemiological and autopsy data of victims of sudden cardiac death occurring in the northern governorates of Tunisia between January 2013 and December 2019. Symptoms preceding death, circadian, weekly and seasonal variations of sudden death were also analyzed. The study population included 1834 men and 468 women with a mean age of 56.5 ± 14.2 years. All cardiovascular risk factors except smoking were significantly more frequent among women but ischemic heart disease was the most common cause of death in men (51.3 %, versus 28 %, P < 0.001). Women were more likely to have a negative macroscopic autopsy than men (34 % versus 23.6 %, P < 0.001). Chest pain preceding sudden death was more frequent in male (24 % versus 13.2 %, P < 0.001). In contrast, women were more likely to have dyspnea (8.1 % versus 15.6 %, P < 0.001). Sudden death in women occurred indoors more often than in men (63.9 % versus 54.5 %, P < 0.001) and also more often during night (midnight to 6 am). We also recorded an excess cardiac mortality in winter in both sexes. Women had considerably more cardiovascular risk factors and more commonly negative macroscopic autopsy. Death occurred indoors and during night more often than in men. [ABSTRACT FROM AUTHOR]

Introduction: Children undergoing long-term hemodialysis (HD) face a reduction in life expectancy mostly due to cardiovascular mortality. Effects of HD on cardiac function have not been fully elucidated in pediatric population., Aim: This study aimed to assess HD session impact on cardiac function in pediatric patients using conventional and strain echocardiography., Methods: We performed a prospective, comparative study of echocardiographic parameters before and after single HD session in a chronic HD pediatric population. We enrolled between the 1st and 30th September 2023, all consecutive patients with end-stage renal disease (ESRD) aged up to 18 years old on maintenance HD three times weekly for at least three months. All patients underwent conventional and left ventricular (LV) longitudinal strain echocardiography in a window of 30-60 minutes before and after HD., Results: 23 patients, 14.8 ± 2.1 years old and 47.8% male, were enrolled. Reductions in body weight and blood pressure were observed after HD, whereas heart rate increased. Significant decrease in LV and left atrial diameters and volumes after HD session were observed. Mitral peak E velocity, as well as average E/e' were significantly lower after HD. Although LV ejection fraction was unchanged, global longitudinal strain for LV was significantly reduced after dialysis (-17.3 ± 3.0% vs. -14.9 ± 2.4%, p=4.10-8)., Conclusion: Patent deterioration in LV systolic function following HD was identified by speckle tracking echocardiography (STE). STE has the potential to unmask early myocardial dysfunction even when there is no evident alteration in conventional systolic function parameters in children with ESRD.

Background: In Tunisia, the number of cardiac implantable electronic devices (CIEDs) is increasing, owing to the increase in patient life expectancy and expanding indications. Despite their life-saving potential and a significant reduction in population morbidity and mortality, their increased numbers have been associated with the development of multiple early and late complications related to vascular access, pockets, leads, or patient characteristics., Objective: The study aims to identify the rate, type, and predictors of complications occurring within the first year after CIED implantation. It also aims to describe the demographic and epidemiological characteristics of a nationwide sample of patients with CIED in Tunisia. Additionally, the study will evaluate the extent to which Tunisian electrophysiologists follow international guidelines for cardiac pacing and sudden cardiac death prevention., Methods: The Tunisian National Study of Cardiac Implantable Electronic Devices (NATURE-CIED) is a national, multicenter, prospectively monitored study that includes consecutive patients who underwent primary CIED implantation, generator replacement, and upgrade procedure. Patients were enrolled between January 18, 2021, and February 18, 2022, at all Tunisian public and private CIED implantation centers that agreed to participate in the study. All enrolled patients entered a 1-year follow-up period, with 4 consecutive visits at 1, 3, 6, and 12 months after CIED implantation. The collected data are recorded electronically on the clinical suite platform (DACIMA Clinical Suite)., Results: The study started on January 18, 2021, and concluded on February 18, 2023. In total, 27 cardiologists actively participated in data collection. Over this period, 1500 patients were enrolled in the study consecutively. The mean age of the patients was 70.1 (SD 15.2) years, with a sex ratio of 1:15. Nine hundred (60%) patients were from the public sector, while 600 (40%) patients were from the private sector. A total of 1298 (86.3%) patients received a conventional pacemaker and 75 (5%) patients received a biventricular pacemaker (CRT-P). Implantable cardioverter defibrillators were implanted in 127 (8.5%) patients. Of these patients, 45 (3%) underwent CRT-D implantation., Conclusions: This study will establish the most extensive contemporary longitudinal cohort of patients undergoing CIED implantation in Tunisia, presenting a significant opportunity for real-world clinical epidemiology. It will address a crucial gap in the management of patients during the perioperative phase and follow-up, enabling the identification of individuals at particularly high risk of complications for optimal care., Trial Registration: ClinicalTrials.gov NCT05361759; https://classic.clinicaltrials.gov/ct2/show/NCT05361759., International Registered Report Identifier (irrid): RR1-10.2196/47525., (©Sonia Chabrak, Abdeddayem Haggui, Emna Allouche, Sana Ouali, Afef Ben Halima, Slim Kacem, Salma Krichen, Sonia Marrakchi, Wafa Fehri, Mohamed Sami Mourali, Zeineb Jabbari, Manel Ben Halima, Elyes Neffati, Aymen  Heraiech, Mehdi Slim, Salem Kachboura, Habib Gamra, Majed Hassine, Sondes Kraiem, Sofien Kammoun, Leila Bezdah, Gouider Jridi, Hatem Bouraoui, Samir Kammoun, Rania Hammami, Rafik Chettaoui, Youssef Ben Ameur, Fares Azaiez, Rami Tlili, Kais Battikh, Hedi Ben Slima, Rim Chrigui, Samia Fazaa, Islem Sanaa, Yassine Ellouz, Mohamed Mosrati, Sami Milouchi, Soumaya Jarmouni, Wacef Ayadi, Malek Akrout, Rabie Razgallah, Wissal Neffati, Meriem Drissa, Selma Charfeddine, Salem Abdessalem, Leila Abid, Lilia Zakhama. Originally published in JMIR Research Protocols (https://www.researchprotocols.org), 08.04.2024.)

Introduction: Several studies have suggested a circadian and septadian pattern of incidence of sudden cardiac death with a morning peak and a Monday peak., Objective: To analyze the circadian and septadian pattern of occurrence of sudden cardiac death in the eight northern Tunisian governorates., Methods: We prospectively collected epidemiological and autopsy data of sudden cardiac death victims occurring in the northern region of Tunisia between January 2013 and December 2019., Results: The population included 1834 men (79.6%) and 468 women (20.4%) with a mean age of 56.5 ± 14 years. Smoking (53.9%) was the most prevalent cardiovascular risk factor. One-fifth (20.9%) of victims had known heart disease, and 3% had a family history of sudden death. ischemic heart disease was the leading cause of sudden death (46.8% of cases). One- fourth (25.7%) of autopsies were negative. Analysis of the circadian pattern of occurrence of sudden cardiac death identified a peak (36.1%, p < 0.001) between midnight and 6 am. This nocturnal excess mortality was significant (p < 0.001) and independent of sex (34.1 % in men and 43.8 % in women) and cause of death (39.3 % of cases of sudden ischemic death and 33.3 % of cases of nonischemic death). Moreover, there was a significant septadian variability in the occurrence of sudden death (p: 0.0015), with a peak on Friday (15.8 %, p: 0.042)., Conclusion: This study showed a peak of sudden death between midnight and 6 am, and on Fridays, confirming the modification of the classic circadian and septadian pattern of sudden death occurrence. These results may help optimize the deployment of emergency mobile teams and structures during the most vulnerable periods., (Copyright © 2023 Elsevier Masson SAS. All rights reserved.)

Background: Left ventricular hypertrophy is the most prevalent cardiac abnormality in hemodialysis patients. The diagnosis of this abnormality is possible by electrocardiogram and/or echocardiography. Our study aimed to assess the prevalence of left ventricular hypertrophy in hemodialysis patients and the accuracy of different electrocardiographic criteria., Methods: This was a cross-sectional retrospective study including 60 hemodialysis patients between 2017 and 2018. A left ventricular mass index higher than 115g/m 2  and 95g/m 2  respectively in men and women defines echocardiographic left ventricular hypertrophy. We assessed left ventricular hypertrophy prevalence, sensitivity, specificity, and area under the receiver-operating characteristics (ROC) curve of fourteen different electrocardiographic criteria for identification of left ventricular hypertrophy., Results: This was a cohort of 60 patients composed of 27 men and 33 women with a mean age 52.6±15,8years. Hypertension was the most common cardiovascular risk factor (82 %). The prevalence of left ventricular hypertrophy at echography was 65 %. Prevalence of left ventricular hypertrophy at electrocardiographic varied across the different criteria ranging from 5 % (R wave in DI) to 32 % (Perugia score). The highest left ventricular hypertrophy prevalence at electrocardiographic was found with the five following criteria: Perugia score (32 %), Peguero-Lo Presti index (28 %), Sokolow-Lyon index, Cornell index, Framingham-adjusted Cornell voltage (17 %). Sensitivity was ranged from 5 % (R in DI, Gubner-Ungerleider index, and product) to 41 % (Perugia score). The specificity of most criteria was ≥90 % except for the Perugia score (85 %). The sensitivity, specificity, postitive and negative productive values and left ventricular hypertrophy prevalence using the five most accurate criteria combined were respectively 48, 90, 70.28, 77.85 and 33 %. Hypertension, duration of HD, arteriovenous fistula, interdialytic weight gain, systolic blood pressure, hemoglobin <9g/dL and hyperparathyroidism were significantly associated with left ventricular hypertrophy., Conclusion: The prevalence of left ventricular hypertrophy detected by echocardiography was high. All electrocardiographic criteria had a low sensibility and a high specificity in the diagnostic of echocardiographic left ventricular hypertrophy. To improve the accuracy of electrocardiographic criteria, it is necessary to combine several electrocardiographic criteria and not often focused on a single classic electrocardiographic index., (Copyright © 2021. Published by Elsevier Masson SAS.)

Spontaneous coronary artery dissection (SCAD) is a non-traumatic non-iatrogenic coronary dissection. It's a frequent cause of acute coronary syndrome (ACS) in women without or with few traditional cardiovascular risk factors. We report an unusual case of multivessel SCAD in a middle-aged woman with successful medical management., (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)

Aim of the Study: The aim of our study was to assess the clinical, electrical, angiographic and therapeutic characteristics of young patients with acute myocardial infarction and to describe the prevalence of in-hospital complications., Patients and Methods: FromJanuary 2014 to May 2017, we retrospectively studied data of patients with acute myocardial infarction younger than 45 years old in the department of cardiology of Charles Nicolle hospital of Tunis., Results: We enrolled 108 patients in the study. The prevalence of myocardial infarction in young patients was 8.5%. The mean age was 39.5 ± 5.5 years with a sex-ratio of 11. The most frequent cardiovascular risk factors were smoking (88%) and dyslipidaemia (51.9%). We reported 75 cases of ST segment elevation myocardial infarction. Primary angioplasty was performed in 41.3% of cases while lytic therapy was administered for the rest of the patients. It was successful in 75% of cases. Among 33 patients who presented with non-ST segment elevation myocardial infarction, percutaneous coronary angioplasty was performed in 60.6% of patients while 15.2% have undergone coronary artery bypass surgery and 24.2% received medical treatment only. In-hospital complications occurred in 39.8% of cases. In-hospital mortality was 1.9 %., Conclusions: Acute myocardial infarction in the young represents a serious health problem. Primary preventive measures aimed at preventing our youth from adopting tobacco use and developing dyslipidemia should be implemented to delay and even to avoid the onset of coronary artery disease., (Copyright © 2021 Elsevier Masson SAS. All rights reserved.)

Background: Hypertension is the leading cause of morbi-mortality in our country. Thus, we conducted this national survey on hypertension to analyze the profile of the Tunisian hypertensive patient and to assess the level of blood pressure control., Methods: Nature HTN is an observational multicentric survey, including hypertensive individuals and consulting their doctors during the period of the study. Blood pressure measurements were conducted during consultation, using a standardized auscultatory or oscillometric sphygmomanometer after at least 15 min of rest. The diagnosis of new hypertension is based on the 2018 ESC/ESH criteria. The primary endpoint of our study was uncontrolled hypertension defined by a systolic blood pressure ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg., Results: Three hundred twenty-one investigators participated in the study. We enrolled 25,890 patients with a female predominance (Sex ratio, 1.21) and an average age of 64.4 ± 12.2 years. Most individuals were treated in the public sector (74%), 39.4% of patients were diabetic, 25.8% were obese, 44.6% were overweight and 14% were smokers. Hypertension was controlled in 51.7% of cases if we consider 140/90 as a BP target, and only in 18.6% if we consider 130/80 as a target. The independent predictors of uncontrolled blood pressure were male sex (OR = 1.09, 95%CI [1.02-1.16]), age > 65 year-old (OR = 1.07, 95% CI[1.01-1.13], diabetes (OR = 1.18, 95% CI [1.11-1.25], Smoking (OR = 1.15, 95% CI [1.05-1.25]), Obesity (OR = 1.14, 95% CI[1.07-1.21]), management in public sector (OR = 1.25, 95% CI [1.16-1.34]), and Heart rate > 80 bpm (OR = 1.59, 95% CI [1.48-1.71]). Contrarily, high educational level (OR = 0.9, 95% CI [0.84-0.97], absence of history of coronary disease (OR = 0.86, 95% CI [0.8-0.93]), salt restriction (OR = 0.48, 95% CI [0.45-0.51]), drug compliance (OR = 0.57, 95% CI[0.52-0.61]), and regular physical activity (OR = 0.77, 95% CI[0.71-0.84]) are strong predictors of blood pressure control., Conclusion: NaTuRe HTN showed that blood pressure control was reached in more than half of the Tunisian people. The control remains low in patients with high cardiovascular profiles and in those treated in the public sector. A national health program based on therapeutic education, regular control and continuous support to the public institutions is needed to decrease the burden of hypertension incidence rate., (© 2022. The Author(s).)

Background: The effects of Ramadan fasting (RF) on cardiometabolic risk factors in patients with stable ischemic heart disease are not well known., Aim: The aim of this study was to evaluate the impact of RF on lipid profile and cardiovascular risk factors in patients with a stable coronary heart disease., Methods: A prospective observational study carried out in the Cardiology department of Charles Nicolle Hospital (Tunisia). Eighty-four patients with a stable ischemic heart disease who intended to fast were enrolled during May 2020. Detailed clinical and biochemical assessments were performed before and after the holy month. Parameters of glycemic control, lipid profile, ultrasensitive C-reactive protein concentration (us-CRP) and homocysteine were performed before- and after- Ramadan (BR and AR, respectively)., Results: Eighty-four patients including 79 males and 5 females, with a mean age of 57±7 years completed the study. Levels of cholesterol, triglycerides, low-density lipoprotein-cholesterol and apoprotein A were significantly improved AR fasting in comparison with their BR values. There was a significant decrease in blood fasting glucose, insulin level, Homeostasis model assessment of insulin resistance index and in us-CRP level., Conclusion: In patients with stable ischemic heart disease, RF may be accompanied by an improvement of lipid profile and glycemic parameters without increase in coronary events., (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)

Background: The coronary artery with an interarterial course CAIAC is the most threatening coronary anomaly, especially if it concerns the left coronary. Percutaneous coronary intervention PCI is scarcely described given its low prevalence and lack of long-term outcome data. Therefore, we assessed through this case series the feasibility and safety of PCI in this population., Methods: This is an observational multicentric study including patients with CAIAC arising from the opposite sinus of Valsalva. The primary endpoints were immediate angiographic success and target lesion revascularization., Results: During the period of the study, we performed 27235 PCI in six Cath labs, 26 procedures concerning abnormal coronaries including 12 with CAIAC. The median age was 57 years extremes: 43-78 with male predominance 1:11. Anomalous coronary artery was Right coronary artery RCA in eight patients, Left main LM in three patients, and left anterior descending LAD in one patient. The stenosis was located in all cases in proximal segments beyond the inter-arterial course proximal LAD, the superior genius of the RCA, or the proximal segment of mid-RCA. Five patients showed slit-like ostium and all have an angle take-off <45° on CT scan. After a median follow-up of 24 months, four subjects presented target lesion revascularization TLR, all were initially treated with either a bare-metal stent or with balloons., Conclusions: PCI of patients with CAIAC is feasible and appears safe. The operator should carefully analyze the angiogram before PCI to choose the appropriate guiding catheter and should be acquainted with the different techniques for improving backup., Competing Interests: Conflicts of interest None., (© 2021 Saudi Heart Association.)

Background: The frequency of heart failure (HF) in Tunisia is on the rise and has now become a public health concern. This is mainly due to an aging Tunisian population (Tunisia has one of the oldest populations in Africa as well as the highest life expectancy in the continent) and an increase in coronary artery disease and hypertension. However, no extensive data are available on demographic characteristics, prognosis, and quality of care of patients with HF in Tunisia (nor in North Africa)., Objective: The aim of this study was to analyze, follow, and evaluate patients with HF in a large nation-wide multicenter trial., Methods: A total of 1700 patients with HF diagnosed by the investigator will be included in the National Tunisian Registry of Heart Failure study (NATURE-HF). Patients must visit the cardiology clinic 1, 3, and 12 months after study inclusion. This follow-up is provided by the investigator. All data are collected via the DACIMA Clinical Suite web interface., Results: At the end of the study, we will note the occurrence of cardiovascular death (sudden death, coronary artery disease, refractory HF, stroke), death from any cause (cardiovascular and noncardiovascular), and the occurrence of a rehospitalization episode for an HF relapse during the follow-up period. Based on these data, we will evaluate the demographic characteristics of the study patients, the characteristics of pathological antecedents, and symptomatic and clinical features of HF. In addition, we will report the paraclinical examination findings such as the laboratory standard parameters and brain natriuretic peptides, electrocardiogram or 24-hour Holter monitoring, echocardiography, and coronarography. We will also provide a description of the therapeutic environment and therapeutic changes that occur during the 1-year follow-up of patients, adverse events following medical treatment and intervention during the 3- and 12-month follow-up, the evaluation of left ventricular ejection fraction during the 3- and 12-month follow-up, the overall rate of rehospitalization over the 1-year follow-up for an HF relapse, and the rate of rehospitalization during the first 3 months after inclusion into the study., Conclusions: The NATURE-HF study will fill a significant gap in the dynamic landscape of HF care and research. It will provide unique and necessary data on the management and outcomes of patients with HF. This study will yield the largest contemporary longitudinal cohort of patients with HF in Tunisia., Trial Registration: ClinicalTrials.gov NCT03262675; https://clinicaltrials.gov/ct2/show/NCT03262675., International Registered Report Identifier (irrid): DERR1-10.2196/12262., (©Leila Abid, Ikram Kammoun, Manel Ben Halima, Salma Charfeddine, Hedi Ben Slima, Meriem Drissa, Khadija Mzoughi, Dorra Mbarek, Leila Riahi, Saoussen Antit, Afef Ben Halima, Wejdene Ouechtati, Emna Allouche, Mehdi Mechri, Chedi Yousfi, Ali Khorchani, Omar Abid, Kais Sammoud, Khaled Ezzaouia, Imen Gtif, Sana Ouali, Feten Triki, Sonia Hamdi, Selim Boudiche, Marwa Chebbi, Mouna Hentati, Amani Farah, Habib Triki, Houda Ghardallou, Haythem Raddaoui, Sofien Zayed, Fares Azaiez, Fadwa Omri, Akram Zouari, Zine Ben Ali, Aymen Najjar, Houssem Thabet, Mouna Chaker, Samar Mohamed, Marwa Chouaieb, Abdelhamid Ben Jemaa, Haythem Tangour, Yassmine Kammoun, Mahmoud Bouhlel, Seifeddine Azaiez, Rim Letaief, Salah Maskhi, Aymen Amri, Hela Naanaa, Raoudha Othmani, Iheb Chahbani, Houcine Zargouni, Syrine Abid, Mokdad Ayari, Ines ben Ameur, Ali Gasmi, Nejeh ben Halima, Habib Haouala, Essia Boughzela, Lilia Zakhama, Soraya ben Youssef, Wided Nasraoui, Mohamed Rachid Boujnah, Nadia Barakett, Sondes Kraiem, Habiba Drissa, Ali Ben Khalfallah, Habib Gamra, Salem Kachboura, Leila Bezdah, Hedi Baccar, Sami Milouchi, Wissem Sdiri, Skander Ben Omrane, Salem Abdesselem, Alifa Kanoun, Karima Hezbri, Faiez Zannad, Alexandre Mebazaa, Samir Kammoun, Mohamed Sami Mourali, Faouzi Addad. Originally published in JMIR Research Protocols (https://www.researchprotocols.org), 27.10.2021.)

Aims: Women's participation is steadily growing in medical schools, but they are still not sufficiently represented in cardiology, particularly in cardiology leadership positions. We present the contemporary distribution of women leaders in cardiology departments in the World Health Organization European region., Methods and Results: Between August and December 2020, we applied purposive sampling to collect data and analyse gender distribution of heads of cardiology department in university/third level hospitals in 23 countries: Austria, Azerbaijan, Belgium, Bosnia-Herzegovina, Croatia, France, Germany, Greece, Italy, North Macedonia, Morocco, Poland, Portugal, Russia, Serbia, Slovakia, Slovenia, Spain, Switzerland, Tunisia, Turkey, Ukraine, and the UK. Age, cardiology subspecialty, and number of scientific publications were recorded for a subgroup of cardiology leaders for whom data were available. A total of 849 cardiology departments were analysed. Women leaders were only 30% (254/849) and were younger than their men counterpart (♀ 52.2 ± 7.7 years old vs. ♂ 58.1 ± 7.6 years old, P = 0.00001). Most women leaders were non-interventional experts (♀ 82% vs. ♂ 46%, P < 0.00001) and had significantly fewer scientific publications than men {♀ 16 [interquartile range (IQR) 2-41] publications vs. ♂ 44 (IQR 9-175) publications, P < 0.00001}., Conclusion: Across the World Health Organization European region, there is a significant gender disparity in cardiology leadership positions. Fostering a diverse and inclusive workplace is a priority to achieve the full potential and leverage the full talents of both women and men., (© The Author(s) 2021. Published by Oxford University Press on behalf of the European Society of Cardiology.)

The NATURE-HF registry was aimed to describe clinical epidemiology and 1-year outcomes of outpatients and inpatients with heart failure (HF). This is a prospective, multicenter, observational survey conducted in Tunisian Cardiology centers. A total of 2040 patients were included in the study. Of these, 1632 (80%) were outpatients with chronic HF (CHF). The mean hospital stay was 8.7 ± 8.2 days. The mortality rate during the initial hospitalization event for AHF was 7.4%. The all-cause 1-year mortality rate was 22.8% among AHF patients and 10.6% among CHF patients. Among CHF patients, the older age, diabetes, anemia, reduced EF, ischemic etiology, residual congestion and the absence of ACEI/ ARBs treatment were independent predictors of 1-year cumulative rates of rehospitalization and mortality. The female sex and the functional status were independent predictors of 1-year all-cause mortality and rehospitalization in AHF patients. This study confirmed that acute HF is still associated with a poor prognosis, while the mid-term outcomes in patients with chronic HF seems to be improved. Some differences across countries may be due to different clinical characteristics and differences in healthcare systems., Competing Interests: The authors have declared that no competing interests exist.

Myocardial perforation is an uncommon but potentially life-threatening complication of pacemaker and implantable cardioverter-defibrillator. Myocardial perforation may be acute, subacute or chronic when it occurs within 24 hours of the device insertion; between 1 day and 30 days; and more than 30 days after implantation. This complication may occur in 1.7%-7% of patients. However, subacute myocardial perforation is rare and affects 0.5%-1.2% of patients. We report the case of an 85-year-old patient with a pacemaker failure 10 days after implantation due to a subacute myocardial perforation caused by an active fixation ventricular lead. Transthoracic echocardiography showed penetration of the ventricular lead through the right ventricular apex into the pericardium without any pericardial effusion. We confirmed myocardial perforation by a CT scan. We referred her to the surgery ward where she was successfully managed., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2021. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: Contemporary registries on atrial fibrillation (AF) are scare in North African countries., Hypothesis: In the context of the epidemiological transition, prevalence of valvular AF in Tunisia has decreased and the quality of management is still suboptimal., Methods: NATURE-AF is a prospective Tunisian registry, involving consecutive patients with AF from March 1, 2017 to May 31, 2017, with a one-year follow-up period. All the patients with an Electrocardiogram-documented AF, confirmed in the year prior to enrolment were eligible. The epidemiological characteristics and outcomes were described., Results: A total of 915 patients were included in this study, with a mean age of 64.3 ± 22 years and a male/female sex ratio of 0.93. Valvular AF was identified in 22.4% of the patients. The mean CHA 2 DS 2 VASC score in nonvalvular AF was 2.4 ± 1.6. Monotherapy with antiplatelet agents was prescribed for 13.8% of the patients. However, 21.7% of the subjects did not receive any antithrombotic agent. Oral anticoagulants were prescribed for half of the patients with a low embolic risk score. In 341 patients, the mean time in therapeutic range was 48.87 ± 28.69%. Amiodarone was the most common antiarrhythmic agent used (52.6%). During a 12-month follow-up period, 15 patients (1.64%) had thromboembolism, 53 patients (5.8%) had major hemorrhage, and 52 patients (5.7%) died., Conclusions: NATURE-AF has provided systematic collection of contemporary data regarding the epidemiological and clinical characteristics as well as the management of AF by cardiologists in Tunisia. Valvular AF is still prevalent and the quality of anticoagulation was suboptimal., (© 2021 The Authors. Clinical Cardiology published by Wiley Periodicals LLC.)

Background: Sudden cardiac death is a major public health problem. Epidemiological and clinical differences according to gender have been described in sudden cardiac death. The aim of this study was to examine the gender differences between autopsy findings and circumstance of occurrence associated with sudden cardiac death., Methods: We prospectively collected epidemiological and autopsy data of victims of sudden cardiac death occurring in the northern governorates of Tunisia between January 2013 and December 2019. Symptoms preceding death, circadian, weekly and seasonal variations of sudden death were also analyzed., Results: The study population included 1834 men and 468 women with a mean age of 56.5±14.2 years. All cardiovascular risk factors except smoking were significantly more frequent among women but ischemic heart disease was the most common cause of death in men (51.3 %, versus 28 %, P<0.001). Women were more likely to have a negative macroscopic autopsy than men (34 % versus 23.6 %, P<0.001). Chest pain preceding sudden death was more frequent in male (24 % versus 13.2 %, P<0.001). In contrast, women were more likely to have dyspnea (8.1 % versus 15.6 %, P<0.001). Sudden death in women occurred indoors more often than in men (63.9 % versus 54.5 %, P<0.001) and also more often during night (midnight to 6 am). We also recorded an excess cardiac mortality in winter in both sexes., Conclusions: Women had considerably more cardiovascular risk factors and more commonly negative macroscopic autopsy. Death occurred indoors and during night more often than in men., (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)

Background: The association between arterial stiffness (AS) and stable coronary artery disease (CAD) has been previously demonstrated. Whether increased arterial stiffness is associated with severe CAD in patients with acute coronary syndrome (ACS) is less explored., Aim: We aim to investigate the relationship between AS parameters and the extent and severity of CAD in patients with ACS., Methods: The study population consisted of 275 patients with ACS. We measured various AS parameters including pulse wave velocity (PWV), augmentation index (AIx), and central pulse pressure (cPP). CAD extent and severity was evaluated by the number of vessels with greater than 70% stenosis., Results: The study population was predominantly men (77, 5%) with an average age of 56, 4±10, 6 years. One hundred and fifteen patients were diabetic and 97 were hypertensive. One hundred fifty patients were admitted for ST elevation myocardial infarction (54, 5%) and 37, 5% for non ST elevation myocardial infarction. Thirty six percent of patients had single vessel disease and 47, 6% of the study population had multivessel disease. At the multivariate analysis, a positive correlation was observed between the number of coronary vessels disease and PWV. PWV (OR=1,272; IC95% [1,090; 1,483]; p=0,002) and cPP (OR=1,071; IC95% [1,024; 1,121]; p=0,003) were also independent predictors of multivessel disease., Conclusion: In patient with ACS, PWV is correlated with the extent of coronary artery disease, as measured by the number of vessels disease. PWV and cPP were also independent predictors of multivessel disease., (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)

Introduction: Patients with ferromagnetic cardiac devices, particularly cardiac implantable electronic devices (CIED) such as pacemakers or implantable cardioverter defibrillators, are often inappropriately deprived of magnetic resonance imaging (MRI) for safety reasons. This consensus document is written by a multidisciplinary working group involving rhythmologists, interventional cardiologists, echocardiographists and radiologists. Its objective is to establish good practice recommendations to optimize the management of patients with cardiac devices requiring MRI examination, while ensuring their safety and facilitating their access to MRI.

Background: Galectin-3 is a new biomarker assumed to reflect fibrogenesis and inflammation. We aimed to investigate the relation of Gal-3 with the severity of coronary artery disease in patients with ST elevation myocardial infarction., Methods: The prospective study enrolled 62 patients with ST elevation myocardial infarction who underwent coronary angiography. The burden of atherosclerosis was assessed by the number of involved vessels, the number of coronary lesions with a stenosis diameter more than 50% and the Gensini score. Gal-3 levels were measured on admission on miniVIDAS (BioMérieux)., Results: The mean age of the patients was 56±11 years old; 93.5% were males. Diabetes, hypertension and hyperlipidemia were respectively 29%, 35.5% and 24.2%. Among patients, 80.6% were active smokers. Mean level of Gal-3was 17±11 ng/ml and didn't differ significantly from the number of involved coronary vessels (p=0.82) and the Gensini score (p=0.4). There was a positive correlation between the number of coronary lesions with a stenosis diameter greater than 50% and Gal-3 (p=0.04)., Conclusion: In patient with ST elevation myocardial infarction we found a positive correlation between the number of coronary stenosis and Gal-3 level.

Introduction: Simulation is a growing pedagogical method in training health professionals. The use of high-fidelity simulators may be associated with significant stress., Objective: to measure self-assessed intensity of stress before and after a planned simulation training session of a third degree atrio-ventricular block  among  medical students., Methods: A sample of 30 students participating in a high-fidelity simulation training course (10 playing the role of team leader and 20 in the role of medical intern) was studied. Stress was evaluated by self-assessment using a numerical scale before and after the session. The peri-traumatic distress inventory was used to measure the level of distress experienced by the participants., Results: The median stress score was 3, 5±2, 4 before and 6, 2±2, 4 after the simulation session (p<0.001). Stress intensity increased significantly after the session in students playing the role of the team leader than those playing the role of medical intern (8, 4±0, 8 versus 5, 2±2, 3 p<0.001).The average score for peri-traumatic distress inventory was also significantly higher in the team leaders (18, 8±10, 4 Vs 9, 2±3, 7 p=0,022)., Conclusion: Simulation-induced stress, as measured by self-assessment, increased significantly after the session and was influenced by the role to be played during the scenario.  Stress should be taken into account before debriefing.

Background: Remote magnetic navigation is an emerging technology for atrial fibrillation (AF) ablation. General anesthesia (GA) has shown to be superior to local anesthesia (LA) for manual AF ablation in terms of catheter stability and lesion formation. We aimed at comparing GA with LA for remote magnetic AF ablation procedures., Methods: All patients eligible for a remote magnetic ablation of AF were included in this study. Ninety patients (70% of the patients were male; age: 60 ± 10 years; CHA2 DS2 -VASC : 1.6 ± 1.2; paroxysmal AF: 60%, persistent AF: 40%), including 45 patients with GA, and 45 patients with LA were enrolled consecutively., Results: There was no significant difference in total procedure time between the two groups (237 ± 50 minutes in the GA group vs 240 ± 61 minutes in the LA group; P = 0.84). Fluoroscopy time was significantly increased in the GA group (14.6 ± 6 minutes vs 11.6 ± 6 minutes, P = 0.018). Ablation time was not different between the two groups (2,320 ± 984 seconds in the GA group vs 2,055 ± 1,023 seconds in the LA group; P = 0.25). After a mean follow-up of 1 year (including repeat procedures), 39/45 patients (86.6%) within the GA group were free from recurrences versus 40/45 patients (88.8%) in the LA group (P = 0.74) without antiarrhythmic drugs., Conclusion: For remote magnetic AF ablation, procedures under LA have similar results to GA in terms of efficacy and safety after 1-year follow-up., (©2014 Wiley Periodicals, Inc.)