1. Schwab F, Dubey A, Gamez L, et al. Adult scoliosis: prevalence, SF-36, and nutritional parameters in an elderly volunteer population. Spine (Phila Pa 1976) 2005;30:1082–5.
2. Glassman SD, Hamill CL, Bridwell KH, Schwab FJ, Dimar JR, Lowe TG. The impact of perioperative complications on clinical outcome in adult deformity surgery. Spine (Phila Pa 1976) 2007;32:2764–70.
3. Acosta FL Jr, McClendon J Jr, O’Shaughnessy BA, et al. Morbidity and mortality after spinal deformity surgery in patients 75 years and older: complications and predictive factors. J Neurosurg Spine 2011;15:667–74.
4. Smith JS, Shaffrey CI, Glassman SD, et al. Risk-benefit assessment of surgery for adult scoliosis: an analysis based on patient age. Spine (Phila Pa 1976) 2011;36:817–24.
5. Yagi M, Michikawa T, Hosogane N, et al. Risk, recovery, and clinical impact of neurological complications in adult spinal deformity surgery. Spine (Phila Pa 1976) 2019;44:1364–70.
7. Jain A, Hassanzadeh H, Puvanesarajah V, et al. Incidence of perioperative medical complications and mortality among elderly patients undergoing surgery for spinal deformity: analysis of 3519 patients. J Neurosurg Spine 2017;27:534–9.
8. Freeman R, Abuzinadah AR, Gibbons C, Jones P, Miglis MG, Sinn DI. Orthostatic hypotension: JACC state-of-the-art review. J Am Coll Cardiol 2018;72:1294–309.
9. Feldstein C, Weder AB. Orthostatic hypotension: a common, serious and underrecognized problem in hospitalized patients. J Am Soc Hypertens 2012;6:27–39.
13. McKinley WO, Tewksbury MA, Godbout CJ. Comparison of medical complications following nontraumatic and traumatic spinal cord injury. J Spinal Cord Med 2002;25:88–93.
15. Faghri PD, Yount JP, Pesce WJ, Seetharama S, Votto JJ. Circulatory hypokinesis and functional electric stimulation during standing in persons with spinal cord injury. Arch Phys Med Rehabil 2001;82:1587–95.
17. Stjernberg L, Blumberg H, Wallin BG. Sympathetic activity in man after spinal cord injury: outflow to muscle below the lesion. Brain 1986;109(Pt 4): 695–715.
20. Rutan GH, Hermanson B, Bild DE, Kittner SJ, LaBaw F, Tell GS. Orthostatic hypotension in older adults: the Cardiovascular Health Study. CHS Collaborative Research Group. Hypertension 1992;19(6 Pt 1): 508–19.
22. Pavy-Le Traon A, Piedvache A, Perez-Lloret S, et al. New insights into orthostatic hypotension in multiple system atrophy: a European multicentre cohort study. J Neurol Neurosurg Psychiatry 2016;87:554–61.
23. Klanbut S, Phattanarudee S, Wongwiwatthananukit S, Suthisisang C, Bhidayasiri R. Symptomatic orthostatic hypotension in Parkinson’s disease patients: prevalence, associated factors and its impact on balance confidence. J Neurol Sci 2018;385:168–74.
24. Matinolli M, Korpelainen JT, Korpelainen R, Sotaniemi KA, Myllyla VV. Orthostatic hypotension, balance and falls in Parkinson’s disease. Mov Disord 2009;24:745–51.
25. Lanni SM, Tillinghast J, Silver HM. Hemodynamic changes and baroreflex gain in the supine hypotensive syndrome. Am J Obstet Gynecol 2002;187:1636–41.
27. Fujii Y, Ishizaki Y, Kino M, Taniuchi S, Kobayashi Y, Kaneko K. Two types of orthostatic dysregulation assessed by diameter of inferior vena cava. Pediatr Int 2011;53:162–7.
28. Ishizaki Y, Fukuoka H, Ishizaki T, et al. Measurement of inferior vena cava diameter for evaluation of venous return in subjects on day 10 of a bed-rest experiment. J Appl Physiol (1985) 2004;96:2179–86.