The pathway from an over-tight antihypertensive dose to a fractured hip runs through orthostatic hypotension. What it is, and what a facility should be watching.
The route from a blood pressure prescription to a broken hip is short, well described, and almost never written in a fall report.
The pathway
- A dose is set to a target that suits a younger patient.
- Standing produces a drop in blood pressure the body no longer compensates for quickly — orthostatic hypotension.
- Dizziness, unsteadiness, sometimes syncope, in the seconds after standing.
- A fall — typically getting out of bed at night, or up from a chair.
- A fracture or a head injury, and the morbidity and mortality that follow it, none of which has anything to do with blood pressure.
What orthostatic hypotension is, precisely
A drop of at least 20 mmHg systolic or 10 mmHg diastolic within three minutes of standing. It affects roughly one in five community-dwelling older adults, and medications are the leading contributing factor. It is measurable in a corridor with a cuff and a chair, and it is measured far less often than it is discussed.
The drugs the criteria single out
The AGS Beers Criteria and STOPP/START version 3 (2023) both single out centrally acting antihypertensives and alpha-blockers as not recommended for routine treatment of hypertension in older adults. That is not a fringe position; it is expert consensus in the standard geriatric prescribing tools.
What a facility should be doing
- Measuring lying and standing pressures on residents who have fallen, and on residents whose medication changed.
- Recording the time of falls. A cluster at night, or within an hour of a morning dose, is the finding.
- Reading fall reports as medication data. A fall report that names the hallway and not the drug list has answered the wrong question.
- Doing the environmental work too — lighting, flooring, clutter, bed height, night supervision. The fall prevention items.
The measurement side
Orthostatic drop and autonomic function are clinical measurements, not facility observations, which is where the pairing with Measura sits. The Measura pairing.
Do not stop or reduce a blood pressure medication on your own. Abrupt withdrawal can cause rebound hypertension. This is a conversation with the prescriber, with the fall history in hand.
The evidence on orthostatic hypotension
A 2020 systematic review and meta-analysis pooled 20 community studies (24,967 people aged 60 and over) and six long-term-care studies (2,694 residents). Pooled prevalence was 22.2% in community-dwelling older people (95% CI 17 to 28) and 23.9% in long-term care settings (95% CI 18.2 to 30.1) — roughly one resident in four.
A 2024 systematic review of 184 studies, which informed the World Falls Guidelines, found orthostatic hypotension associated with falls at an unadjusted odds ratio of 1.39 (95% CI 1.18 to 1.64) over a 12-month reporting interval — smaller than stroke (1.90) or peripheral arterial disease (1.82), and still substantial across a whole building.
On mortality, be careful with the number
A meta-analysis of 13 prospective studies and 121,913 patients found orthostatic hypotension associated with all-cause death at RR 1.50 (95% CI 1.24 to 1.81), incident coronary heart disease RR 1.41, heart failure RR 2.25 and stroke RR 1.64. In the subgroup aged 65 and over the mortality association was not statistically significant — 1.26 (95% CI 0.99 to 1.62). The headline figure is therefore not the one to quote at a nursing-home population, and it is not quoted here.
Antihypertensive intensity and serious fall injury
A competing-risk analysis of 4,961 community-living adults over 70 with hypertension found adjusted hazard ratios for serious fall injury of 1.40 (95% CI 1.03 to 1.90) with moderate-intensity antihypertensive treatment and 1.28 (95% CI 0.91 to 1.80) with high-intensity treatment, compared with non-users. Among the 503 participants who had already had a fall injury the hazard ratios rose to 2.17 (0.98 to 4.80) and 2.31 (1.01 to 5.29). A previous fall is the signal that changes the calculation.
References
- Saedon NI, Tan MP, Frith J 2020. The prevalence of orthostatic hypotension: a systematic review and meta-analysis. Journals of Gerontology Series A 75(1):117-122. [systematic review and meta-analysis] · PMID 30169579 · doi:10.1093/gerona/gly188
- Bourke R, et al. 2024. Cardiovascular disorders and falls among older adults: a systematic review and meta-analysis. Journals of Gerontology Series A 79(2). [systematic review and meta-analysis, 184 studies] · PMID 37738307 · doi:10.1093/gerona/glad221
- Ricci F, et al. 2015. Cardiovascular morbidity and mortality related to orthostatic hypotension: a meta-analysis of prospective observational studies. European Heart Journal 36(25):1609-17. [meta-analysis, 121,913 patients] · PMID 25852216 · doi:10.1093/eurheartj/ehv093
- Tinetti ME, et al. 2014. Antihypertensive medications and serious fall injuries in a nationally representative sample of older adults. JAMA Internal Medicine 174(4):588-95. [competing-risk cohort, 4,961 adults over 70] · PMID 24567036 · doi:10.1001/jamainternmed.2013.14764