title: Predictive value of non-invasive hemodynamic measurement by means of impedance cardiography in hypertensive subjects older than 50 years of age.
abstract: The prognostic value of impedance cardiography (ICG; cardiac index [CI] and systemic vascular resistance index [SVRI] were measured) was assessed in this retrospective cohort study. A total of 1151 hypertensive outpatients >50 years with a baseline ICG were included. After median follow-up of 3.9 years, for the composite endpoint of cardiovascular events and stroke, adjusted HR for each 500 ml/min/m(2) CI increase was 0.85 (CI95% 0.73-0.9, p = 0.039), and for each 500 dynes s cm(-5) SVRI increase was 1.11 (CI95% 1.01-1.23, p = 0.046), whereas adjusted HR for all-cause mortality was not significant. ICG adds prognostic value to conventional risk factors in hypertensive patients.
authors.affiliation: Hypertension Section, Internal Medicine Department, Hospital Italiano de Buenos Aires , Buenos Aires , Argentina and.
authors.forename: Marcelo A
authors.initials: MA
authors.lastname: Rada
authors.forename: Paula E
authors.initials: PE
authors.lastname: Cuffaro
authors.forename: Carlos R
authors.initials: CR
authors.lastname: Galarza
authors.forename: Jessica
authors.initials: J
authors.lastname: Barochiner
authors.forename: Jose
authors.initials: J
authors.lastname: Alfie
authors.forename: Maria L
authors.initials: ML
authors.lastname: Posadas Martinez
authors.forename: Diego H
authors.initials: DH
authors.lastname: Giunta
authors.forename: Margarita S
authors.initials: MS
authors.lastname: Morales
authors.forename: Lucas S
authors.initials: LS
authors.lastname: Aparicio
authors.forename: Gabriel D
authors.initials: GD
authors.lastname: Waisman
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002307:Cardiography, Impedance / Q000379:methods; D005260:Female; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D006973:Hypertension / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011379:Prognosis; D012189:Retrospective Studies; D020521:Stroke / Q000175:diagnosis*
keywords: Cardiovascular morbidity; hypertension; impedance cardiography; mortality; prognosis