0106: Hyponatremia and outcomes in patients admitted for acute heart failure

PurposeThe aims of this study is to characterize hyponatremic hospitalized patients with HF and to clarify the relations between hyponatremia and outcomes during hospitalization and at 6 months.MethodsThis is a retrospective study of 234 patients admitted in the cardiology department of Fattouma Bourguiba Monastir hospital between January 2010 and March 2011.Hyponatremia was defined as a blood value of sodium < 135mmol/l.ResultsThe mean serum sodium concentration is 138±5mmol / l. Hyponatremia (Na + <135mmol / l) was noted in 63 (26.9%) patients.Hospital mortality was 7.3% (N = 17). Cardiovascular origin was observed in 58.8% of cases. This mortality was significantly higher in patients with hyponatremia, 15.87%, compared to 4.09%, in those with normonatremia (p=0.004). After their outputs, 39 patients (19.69%) required at least one rehospitalization during the first 6 months of follow-up. The 6-month mortality was 11, 5%. The rate of readmission and mortality at 6 months was higher in patients who had hyponatremia; respectively 32.07% vs 13.41%, p =0.002 and 21.42% vs 7.78%, p =0.005.ConclusionIn our study, the presence of hyponatremia in patients hospitalized for acute heart failure is predictive of hospital mortality, readmission and mortality at 6 months

Risk profile and in-hospital prognosis in elderly patients presenting for acute ST-elevation myocardial infarction in the Tunisian context

Objectives: Little is known about the risk profile and in-hospital prognosis of elderly patients presenting for ST-elevation myocardial infarction (STEMI) in Tunisia. We sought to determine in-hospital prognosis of elderly patients with STEMI in a Tunisian center. Methods: The study was carried out on a retrospective registry enrolling 1403 patients presenting with STEMI in a Tunisian center between January 1998 and January 2013. Patients ≥75 years old were considered elderly. Risk factors and in-hospital prognosis were compared between elderly and younger patients, and then predictive factors of in-hospital death were determined in elderly patients. Results: Out of the overall population, 211 (15%) were part of the elderly group. Compared to younger patients, elderly patients were more likely to have arterial hypertension but less likely to be smokers and obese. Thrombolysis was significantly less utilized in the elderly group (22.3% vs. 36.6% in the younger group, p < 0.001), whereas the use primary percutaneous coronary intervention was comparable between the two sub-groups (24.2% vs. 28.8%, p = 0.17). The incidence of in-hospital complications was higher in the elderly group, and so was the in-hospital mortality rate (14.2% vs. 8.1%, p = 0.005). Heart failure on-admission, renal failure on-admission, and inotropic agents use were independently associated to in-hospital death in the elderly group. Conclusions: In the Tunisian context, elderly patients presenting with STEMI have higher prevalence of risk factors and a worse in-hospital course in comparison to younger patients. Clinical presentation on-admission has a strong impact on in-hospital prognosis

Prognostic value of hyperglycemia on-admission in diabetic versus non-diabetic patients presenting with ST-elevation myocardial infarction in Tunisia

Background: Hyperglycemia on-admission is a powerful predictor of adverse events in patients presenting for ST-elevation myocardial infarction (STEMI). Aim: In this study, we sought to determine the prognostic value of hyperglycemia on-admission in Tunisian patients presenting with STEMI according to their diabetic status. Methods: Patients presenting to our center between January 1998 and September 2014 were enrolled. Hyperglycemia was defined as a glucose level ≥11 mmol/L. In-hospital prognosis was studied in diabetic and non-diabetic patients. The predictive value for mortality of glycemia level on-admission was assessed by mean of the area under receiver operating characteristic (ROC) curve calculation. Results: A total of 1289 patients were included. Mean age was 60.39 ± 12.8 years and 977 (77.3%) patients were male. Prevalence of diabetes mellitus was 70.2% and 15.2% in patients presenting with and without hyperglycemia, respectively (p < 0.001). In univariate analysis, hyperglycemia was associated to in-hospital death in diabetic (OR: 8.85, 95% CI: 2.11–37.12, p < 0.001) and non-diabetic patients (OR: 2.57, 95% CI: 1.39–4.74, p = 0.002). In multivariate analysis, hyperglycemia was independently predictive of in-hospital death in diabetic patients (OR: 9.6, 95% CI: 2.18–42.22, p = 0.003) but not in non-diabetic patients (OR: 1.93, 95% CI: 0.97–3.86, p = 0.06). Area under ROC curve of glycemia as a predictor of in-hospital death was 0.792 in diabetic and 0.676 in non-diabetic patients. Conclusion: In patients presenting with STEMI, hyperglycemia was associated to hospital death in diabetic and non-diabetic patients in univariate analysis. In multivariate analysis, hyperglycemia was independently associated to in-hospital death in diabetic but not in non-diabetic patients. Keywords: Hyperglycemia, Diabetes mellitus, ST-elevation myocardial infarction, Mortalit

Design and Rationale of the National Tunisian Registry of Heart Failure (NATURE-HF): Protocol for a Multicenter Registry Study

BackgroundThe 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). ObjectiveThe aim of this study was to analyze, follow, and evaluate patients with HF in a large nation-wide multicenter trial. MethodsA 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. ResultsAt 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. ConclusionsThe 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 RegistrationClinicalTrials.gov NCT03262675; https://clinicaltrials.gov/ct2/show/NCT03262675 International Registered Report Identifier (IRRID)DERR1-10.2196/1226