Postural Hypotension: Recognition and Management for Care Staff

A resident who feels dizzy or unsteady on standing is sometimes dismissed as "just being a bit wobbly," but this can be a sign of postural hypotension — a common, under-recognised condition that is one of the most preventable contributors to falls in care settings. Understanding what it is and how to check for it properly gives care staff a genuinely useful early-warning tool.

What Postural Hypotension Actually Is

Postural (or orthostatic) hypotension is defined clinically as a drop of at least 20 mmHg in systolic blood pressure, or at least 10 mmHg in diastolic pressure, when a person moves from lying or sitting to standing. It happens because the body's normal mechanism for maintaining blood pressure against gravity — constricting blood vessels and increasing heart rate — fails to respond quickly or strongly enough, causing a temporary drop in blood flow to the brain.

It is significantly more common in care home residents than in the general population. Reported prevalence includes around 31% of care home residents, 29% of people living with dementia, 25% of people with Parkinson's disease, 21% of people with diabetes, and 20% of people with hypertension — figures that make it one of the more common, yet frequently missed, contributors to falls risk in this population.

What Causes It

Causes fall broadly into two groups. Neurogenic causes include Parkinson's disease, Lewy Body Dementia, multiple system atrophy, and diabetes-related autonomic nerve damage, where the body's automatic blood pressure regulation is directly impaired. Non-neurogenic causes are often more modifiable and include medication side effects — particularly diuretics, some antidepressants, and vasodilating blood pressure medicines — along with dehydration, blood loss, and underlying heart problems. This overlap with medication is significant: polypharmacy and deprescribing reviews often identify postural hypotension as a reason to reconsider a resident's medication regimen.

How Care Staff Should Check for It

The recognised lying-and-standing blood pressure check involves the resident lying supine for a minimum of five minutes, with blood pressure and heart rate recorded. The resident then stands, and blood pressure is recorded again within the first minute of standing, and again after three minutes. Staff should note the lowest reading obtained and document any symptoms reported — dizziness, blurred vision, or near-fainting — alongside the numbers themselves. A diminished rise in heart rate on standing, despite a significant blood pressure drop, can suggest a neurogenic rather than volume-related cause, which is useful information for the reviewing clinician.

One important safety point for training: up to a third of people with postural hypotension experience no obvious symptoms at all despite a significant blood pressure drop — sometimes called "hypotension unawareness." This means relying on a resident to report feeling dizzy is not a reliable screening method on its own, and this is part of why routine lying/standing checks matter for residents identified as being at higher falls risk, not just those who complain of symptoms.

Practical Management Steps

Non-pharmacological approaches are the recommended first step and are well within a care team's control: encouraging fluid intake of around two litres a day where medically appropriate, raising the head of the bed slightly, encouraging slow, staged positional changes (sitting on the edge of the bed before standing, rather than standing straight up), and considering compression garments where advised by a clinician. Where symptoms persist despite these measures, a medication review is often the next step, since reducing or timing differently a diuretic or blood pressure medicine can resolve symptoms without further intervention. In more persistent cases, medicines such as fludrocortisone or midodrine may be prescribed, but these sit outside what care staff manage directly.

Recording and Escalating Findings

A single lying/standing blood pressure reading is far less useful than a trend recorded consistently over time. Care plans should have a clear place to log each check, including the exact timing of the standing readings and any symptoms reported, so that a GP or district nurse reviewing the resident can see a pattern rather than a single snapshot. Staff should be trained to escalate promptly, rather than simply logging and moving on, whenever a resident has a new or worsening drop in blood pressure on standing, a fall with no other obvious cause, or an episode of confusion that resolves once they sit or lie back down — all of which can point to postural hypotension that has not yet been formally diagnosed.

Frequently Asked Questions

Is postural hypotension the same as low blood pressure generally?
No. A person can have entirely normal blood pressure at rest and still experience a significant, symptomatic drop specifically on standing. It is the change between positions that defines the condition, not a single resting reading.

Should every resident have a lying/standing blood pressure check?
Good practice is to prioritise this for residents aged 65 and over, and those aged 50 to 64 with relevant chronic conditions, particularly on admission and whenever a fall or unexplained dizziness occurs.

Can postural hypotension be cured?
It often can't be entirely eliminated, particularly where the cause is neurogenic, but it can usually be significantly improved through a combination of medication review and the practical, non-drug steps described above.

Recognising postural hypotension properly, rather than treating dizzy spells as an isolated or vague complaint, gives care teams a genuine opportunity to prevent falls before they happen — and it is one of the more straightforward clinical checks care staff can be confidently trained to carry out.