Hypertension and frailty in older adults.

The association between hypertension and frailty syndrome in older adults remains unclear. There is scarce information about the prevalence of hypertension among frail elderly patients or on its relationship with frailty. Up to one quarter of frail elderly patients present without comorbidity or disability, yet frailty is a leading cause of death.

Electrocardiographic findings in chronic hemodialysis patients.

Introduction: Cardiovascular disease is the leading cause of mortality among patients on dialysis. When considering all causes of death, about 30% are classified as cardiac arrest, death of unknown cause or cardiac arrhythmia. The increasing time of ventricular depolarization and repolarization, measured non-invasively by measuring the QT interval on the electrocardiogram at rest, has emerged as a predictor of complex ventricular arrhythmias, a major cause of sudden cardiac death.