Prevalence and predictors of Sleep Apnea in Atrial Fibrillation patients.

BACKGROUND: Obstructive Sleep Apnea Syndrome (OSAS) is a common but often under diagnosed condition that constitutes a real public health problem. The prevalence of OSAS in atrial fibrillation (AF) patients ranges from 32 to 85% according to recent studies. AIM: To determine the prevalence and severity of OSAS in a population followed for non-valvular AF (NVAF), and to identify OSAS's predictive factors in this population. METHODS: A cross-sectional study was conducted, including successive patients followed for NVAF. Patients with a known history of OSAS were not included. All patients had a clinical screening for symptoms suggestive of OSAS and underwent an ambulatory sleep study. RESULTS: We included 100 patients in this study. OSAS was detected in 90% of NVAF patients. The average apnea-hypopnea index (AHI) was 21.6 ± 13.6 e/h. OSAS was mild in 32%, moderate in 27% and severe in 31% of cases. Clinical characteristics were comparable between patients with and without OSAS. The multivariate analytical study concluded that independent predictive factors of OSAS in AF patients were an age greater than 61 years (p=0.029), AF duration more than 2 years (p=0.04) and snoring (p=0.01). CONCLUSIONS: OSAS was diagnosed in 90% of NVAF patients. Thus, a systematic screening for OSAS in AF patients may be a relevant approach given its high prevalence in this population and its therapeutic implications. Snoring, age greater than 61 years, and AF duration more than 2 years were independently associated with OSAS in our study.

Script concordance test as a sanctionnal evaluation in cardiology.

INTRODUCTION: Sanctioning evaluation in cardiology is carried out using multiple choice questions, short-answer questions, clinical cases and editorial questions. However, these methods do not assess clinical reasoning in a context of uncertainty in contrast with script concordance tests (SCT). AIM: To compare the scores obtained by the students in the 3rd year of medicine with the SCT versus the sanctioning test of cardiology and to study the correlation between these two evaluation methods. METHODS: This is a prospective study including 31 3rd year students who completed their cardiology clerckship in the Cardiology Department of the HabibThameur Hospital during the first half of 2016. We compared the scores obtained in the 13 SCT test (39 items) with those of the cardiology normative test. RESULTS: Students 'mean score at SCT was significantly lower than that of experts (66.6 ± 10.2 vs 86 ± 6.7%, p <0.0001). The mean score obtained by students at the SCT was significantly higher than that of the cardiology sanctioning test (p <0.001). Cronbach alpha coefficient was 0.71. There was no correlation between the two tests (r = 0.329; p= 0.07). CONCLUSION: The evaluation of our students by the SCT showed mean score statistically higher than the questions of a classic test, without correlation between them. This should encourage us to incorporate SCT into our assessment methods to promote clinical reasoning.

[Myocardial infarction revealed by ischemic stroke]. / Infarctus du myocarde révélé par un accident vasculaire cérébral.

Ischemic cerebral infarction associated with myocardial infarction is yet a real diagnosis challenge. If during the acute myocardial phase the mechanism is mostly embolic, at long-term, the mechanism is not clearant and other causes should be searched. We report a 50 year old man with ischaemic stroke with strong evidence of myocardial infarction in the late phase with wall-motion abnormality and mural clot revealed by echocardiography and Q waves. Atrial fibrillation was suspected and no other abnormalities could be found. The diagnosis of cardio-embolic ischaemic stroke could not be made with certainly.