ABC | Volume 110, Nº4, April 2018

Original Article Silva et al Postural hypotension: spectral analysis Arq Bras Cardiol. 2018; 110(4):303-311 This is an open-access article distributed under the terms of the Creative Commons Attribution License 29. Rahman F, Pechnik S, Gross D, Sewell L, GoldsteinDS. Low frequency power of heart rate variability reflects baroreflex function, not cardiac sympathetic innervations. Clin Auton Res. 2011;21(3):133-41. doi: 10.1007/s10286- 010-0098-y. 30. Joseph A, Wanono R, Flamant M, Vidal-Petiot E. Orthostatic hypotension: a review. Nephrol Ther. 2017 Apr;13 Suppl 1:S55-S67. doi: 10.1016/j. nephro.2017.01.003. 31. Gangavati A, Hajjar I, Quach L, Jones RN, Kiely DK, Gagnon P, et al. Hypertension, orthostatic hypotension, and the risk of falls in a community- dwelling elderly population: the maintenance of balance, independent living, intellect, and zest in the elderly of Boston Study. J Am Geriatr Soc. 2011;59(3):383-9. doi: 10.1111/j.1532-5415.2011.03317.x. Erratum in: J AmGeriatr Soc. 2011;59(5):960. 32. Valbusa F, Labat C, Salvi P, Vivian ME, Hanon O, Benetos A; PARTAGE investigators. Orthostatic hypotension in very old individuals living in nursing homes: the PARTAGE study. J Hypertens. 2012;30(1):53-60. doi: 10.1097/ HJH.0b013e32834d3d73. 33. Poon O, Braun U. High prevalence of orthostatic hypotension and its correlation with potentially causative medications among elderly veterans. J Clin Pharm Ther. 2005;30(2):173-8. doi: 10.1111/j.1365- 2710.2005.00629.x. 34. Kamaruzzaman S, Watt H, Carson C, Ebrahim S. The association between orthostatic hypotension and medication use in the British Women’s Heart and Health Study. Age Ageing. 2010;39(1):51-6. doi: 10.1093/ageing/afp192. 35. O’Connell MD, Savva GM, Fan CW, Kenny RA. Orthostatic hypotension, orthostatic intolerance and frailty: the Irish Longitudinal Study on Aging- TILDA. Arch Gerontol Geriatr. 2015;60(3):507-13. doi: 10.1016/j. archger.2015.01.008. 36. Ramsay SE, Arianayagam DS, Whincup PH, Lennon LT, Cryer J, Papacosta AO, et al. Cardiovascular risk profile and frailty in a population-based study of older British men. Heart. 2015; 101(8):616-22. doi: 10.1136/ heartjnl-2014-306472. 311

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