Two-year morbidity and mortality in elderly patients with syncope.

BACKGROUND: syncope is a common cause of hospitalisation in the elderly. However, morbidity and mortality in elderly patients with syncope is not well established. METHODS: two-hundred and forty-two patients older than 65 years consecutively referred to the participating centres for evaluation of transient loss of consciousness were enrolled in a multicentre 2-year longitudinal observational study. Mortality and syncope recurrences were recorded and multidimensionally evaluated at 6, 12, 18 and 24 months. FINDINGS: at 24 months, total mortality was 17.2% and syncope recurrence was 32.5%. Cardiac syncope was more frequent in deceased than in survivor patients (21.7 versus 12.3%; P = 0.03), whereas neuro-mediated (62.1 versus 66.2%; P = 0.357) and unexplained syncope (10.8 versus 11.8%; P = 0.397) did not differ between the two groups. Drug-induced and/or multifactorial syncope was less frequent in patients with syncope recurrence (5.7 versus 10.7%; P = 0.02). Kaplan-Meyer curves indicated that mortality and syncope recurrence increased significantly with age (P = 0.006 and P = 0.008, respectively). At multivariate analysis, mortality was significantly predicted by age and comorbidity (hazard ratios: 1.17 and 1.39, and 95% confidence interval 1.01-1.37 and 1.01-1.93, respectively), and syncope recurrence by age and disability (hazard ratio: 1.13 and 1.04, 95% confidence interval 1.01-1.25 and 1.04-2.25, respectively). Depression increased from baseline to the end of follow-up (from 28.3 to 41.4%; P = 0.001). CONCLUSIONS: in our patients, mortality was related to increasing age and comorbidity, whereas recurrence was related to increasing age and disability. Cardiac syncope was more frequent in deceased than in survivor patients, and syncope recurrence was high despite a low incidence of unexplained syncope.

Early and late outcome of treated patients referred for syncope to emergency department: the EGSYS 2 follow-up study.

AIMS: We evaluated the early (1 month) and late (2 years) death rate and syncopal relapses of patients referred for syncope to 11 general hospitals emergency departments. Patients were enrolled in the Evaluation of Guidelines in SYncope Study 2 (EGSYS 2) study. The guidelines of the European Society of Cardiology were strictly followed in the management of patients. METHODS AND RESULTS: Out of the 465 patients enrolled in the EGSYS 2 study, 398 (86%) underwent a complete follow-up. We excluded 18 patients with non-syncopal attacks. Among the remaining 380 patients, death of any cause occurred in 35 (9.2%). The mean follow-up was 614 +/- 73 days. Six deaths (17% of total) occurred during the first month of follow-up. Patients who died were older, had a higher incidence of structural heart disease and/or abnormal ECG, had injuries related to syncope and higher EGSYS score. Syncope recurred in 63 (16.5%) patients. Syncopal relapses occurred in only one patient during the first month of follow-up. The incidence of syncopal recurrences was unrelated to the mechanism of syncope. No clinical differences were found between patients with or without syncopal recurrence and in patients with EGSYS score < or >or=3. CONCLUSION: A peak of cardiovascular mortality but not of syncopal recurrences was observed in patients attending to the emergency department for syncope within the first month. Late unfavourable outcomes were caused by associated cardiovascular diseases rather than by the mechanism of syncope. The causes of syncope did not determine the recurrence rate.

Prospective multicentre systematic guideline-based management of patients referred to the Syncope Units of general hospitals.

AIMS: Although an organizational model for syncope management facilities was proposed in the 2004 guidelines of the European Society of Cardiology (ESC), its implementation in clinical practice and its effectiveness are largely unknown. METHODS AND RESULTS: This prospective study enrolled 941 consecutive patients referred to the Syncope Units of nine general hospitals from 15 March 2008 to 15 September 2008. A median of 15 patients per month were examined in each unit, but the five older units had a two-fold higher volume of activity than the four newer ones (instituted <1 year before): 23 vs. 12, P = 0.02. These figures give an estimated volume of 163 and 60 patients per 100,000 inhabitants per year, respectively. Referrals: 60% from out-of-hospital services, 11% immediate and 13% delayed referrals from the Emergency Department, and 16% hospitalized patients. A diagnosis was established on initial evaluation in 191 (21%) patients and early by means of 2.9 +/- 1.6 tests in 541 (61%) patients. A likely reflex cause was established in 67%, orthostatic hypotension in 4%, cardiac in 6% and non-syncopal in 5% of the cases. The cause of syncope remained unexplained in 159 (18%) patients, despite a mean of 3.5 +/- 1.8 tests per patient. These latter patients were older, more frequently had structural heart disease or electrocardiographic abnormalities, unpredictable onset of syncope due to the lack of prodromes, and higher OESIL and EGSIS risk scores than the other groups of patients. The mean costs of diagnostic evaluation was 209 euro per outpatient and 1073 euro per inpatient. The median cost of hospital stay was 2990 euro per patient. CONCLUSION: We documented the current practice of syncope management in specialized facilities that have adopted the management model proposed by the ESC. The results are useful for those who wish to replicate this model in other hospitals. Syncope remains unexplained during in-hospital evaluation in more complex cases at higher risk.

Neuroautonomic evaluation of patients with unexplained syncope: incidence of complex neurally mediated diagnoses in the elderly.

BACKGROUND: The incidence of syncope increases in individuals over the age of 70 years, but data about this condition in the elderly are limited. Little is known about tilt testing (TT), carotid sinus massage (CSM), or supine and upright blood pressure measurement related to age or about patients with complex diagnoses, for example, those with a double diagnosis, ie, positivity in two of these three tests. METHODS: A total of 873 consecutive patients of mean age 66.5±18 years underwent TT, CSM, and blood pressure measurement in the supine and upright positions according to the European Society of Cardiology guidelines on syncope.1 Neuroautonomic evaluation was performed if the first-line evaluation (clinical history, physical examination, electrocardiogram) was suggestive of neurally mediated syncope, or if the first-line evaluation was suggestive of cardiac syncope but this diagnosis was excluded after specific diagnostic tests according to European Society of Cardiology guidelines on syncope, or if certain or suspected diagnostic criteria were not present after the first-line evaluation. RESULTS: A diagnosis was reached in 64.3% of cases. TT was diagnostic in 50.4% of cases, CSM was diagnostic in 11.8% of cases, and orthostatic hypotension was present in 19.9% of cases. Predictors of a positive tilt test were prodromal symptoms and typical situational syncope. Increased age and a pathologic electrocardiogram were predictors of carotid sinus syndrome. Varicose veins and alpha-receptor blockers, nitrates, and benzodiazepines were associated with orthostatic hypotension. Twenty-three percent of the patients had a complex diagnosis. The most frequent association was between vasovagal syncope and orthostatic hypotension (15.8%); 42.9% of patients aged 80 years or older had a complex diagnosis, for which age was the strongest predictor. CONCLUSION: Neuroautonomic evaluation is useful in older patients with unexplained syncope after the initial evaluation. A complex neurally mediated diagnosis is frequent in older people. Our results suggest that complete neuroautonomic evaluation should be done particularly in older patients.

Role of early symptoms in assessment of syncope in elderly people: results from the Italian group for the study of syncope in the elderly.

OBJECTIVES: To assess the ability of specific early symptoms to predict cardiac and noncardiac syncope in elderly people. DESIGN: Multicenter cross-sectional observational study. SETTING: Inpatient geriatric acute care departments and outpatient clinics. PARTICIPANTS: Two hundred forty-two patients with syncope (mean age 79+/-8) consecutively referred for evaluation of transient loss of consciousness to any of six clinical centers participating in the Italian Group for the Study of Syncope in the Elderly (GIS Study). MEASUREMENTS: All patients were assessed according to European Society of Cardiology Syncope guidelines and interviewed about symptoms and signs present before syncope. RESULTS: One hundred seventy-four of 242 patients (75.4%) had noncardiac syncope, and 34 (14.7%) had cardiac syncope; 165 patients (71.1%) related symptoms before the loss of consciousness. When elderly patients with syncope were stratified for the presence and absence of symptoms, noncardiac syncope showed the highest prevalence of symptoms (75.3%, P<.01). Awareness of being about to faint, sweating, blurred vision, and nausea are more prevalent in noncardiac syncope. Dyspnea is more prevalent in cardiac syncope. All symptoms except awareness of being about to faint and weakness had good specificity, but sensitivity was low for all symptoms considered. Multivariate regression analysis adjusted for sex and age indicated that nausea (relative risk (RR)=3.7, 95% confidence interval (CI)=1.26-11.2), blurred vision (RR=3.5, 95% CI=1.34-9.59), and sweating (RR=2.8, 95% CI=.21-6.89) were predictive of noncardiac syncope. Dyspnea (RR=5.5, 95% CI=1.0-30.2) was the only symptom predictive of cardiac syncope. CONCLUSION: The data show that symptoms such as nausea, blurred vision, and sweating are predictive of noncardiac syncope, whereas only dyspnea is predictive of cardiac syncope in elderly people.

[Evaluation of "complex syncope: what are the indications for second-level investigations?]. / Inquadramento della sincope "difficile": quali sono le indicazioni agli esami di secondo livello?

Syncope is a common symptom accounting for 1.1% of all admissions to the emergency department in Italy. Diagnostic and therapeutic management of patients with syncope may be complex and with a major impact on health expenditure. A standardized approach to syncope may reduce diagnostic tests, hospitalizations and health costs. After the initial "gold standard" evaluation, which includes history, physical examination, orthostatic hypotension test and ECG, several diagnostic pathways can be followed. It has been shown that a correct initial evaluation and a thorough knowledge of syncope can reduce needless testing and increase diagnostic yield, optimizing resource management. In this review we aim to underscore the key points of the management of patients with syncope and the main indications for specific second-level examinations, such as those for neuroautonomic evaluation (tilt table test, carotid sinus massage) and implantable loop recorder. The role of Syncope Units in the management of patients with temporary loss of consciousness is also described.