Why do so few doctors warn anaesthetic can send you PSYCHOTIC?

It’s worryingly common in older patients – as Richard knows to his terrifying cost

FEELING disorientated for a while after coming round from an operation is to be expected. But nothing could have prepared Richard Lindley for the psychosis he endured for months after routine eye surgery. The former BBC Panorama and ITN journalist, 82, had been admitted to the Royal London Hospital in July for a minor procedure to correct a drooping eyelid.

But according to his wife, the broadcaster Carole Stone, he came out of the operating theatre a completely different man.

‘He didn’t know who I was, where he was or what was going on,’ she says.

And Richard adds: ‘I didn’t recognise my home and I was having vivid hallucinations of water pouring down the stairs and men in spiked hats. It was terrifying – and no one seemed to have a clue why this was happening.’

By September, Richard was showing signs of acute paranoia.

Carole says: ‘I’d find him frozen in fear of a savage attack – he kept saying there were two Caroles, and argued that we should part as he was married to the “other Carole”. ’

Richard’s doctors seemed baffled, but when an MRI scan came back normal, a medical friend suggested it could be a shockingly common but little-known complication called post-operative delirium.

The condition is often marked by memory disturbances, confusion and hallucinations.

In 2014, the suicide of British jewellery designer Sandra d’Auriol, 53, who jumped from the roof of a Beverly Hills clinic after coming round from a facelift, was attributed to the phenomenon.

And in rare cases, the psychosis can become permanent. Symptoms tend to appear in the first days following an operation and can become more extreme in the evenings.

Post-operative delirium is thought to be triggered by a combination of the anaesthetic drugs given before and during an operation and drugs administered afterwards; pre-existing conditions such as dementia; medications already taken; and also how ‘stressful’ the operation is to the body. The risk – and severity – also increases with age.

Studies show that although only four per cent of over-80s who have cataract surgery might suffer from delirium, the risk rises to 36 per cent in the same age group after vascular surgery. This increased risk is believed to be related to what extent the body is disturbed by the trauma of the operation.

A study at the Johns Hopkins Hospital in the US found that post-operative delirium affected 39 per cent of older patients who’d had deep sedation and 34 per cent of those who’d had light sedation.

Anna Crossley, professional lead for acute, emergency and critical care at the Royal College of Nursing, says post-surgical infection can increase risk, as can depression and drug and alcohol abuse in younger patients.

Stopping or changing a person’s medications can also make delirium more likely.

Richard had been asked to stop taking his blood-pressure medication for two weeks before his operation, to try to reduce the risk of bleeding during the procedure.

Another trigger can be low oxygen levels after a procedure which might be caused by a pre-existing lung or heart conditions. It is also more likely to strike older people who already have some form of cognitive impairment. An increasing number of hospital trusts now screen older patients before operations to identify those who may suffer this complication.

Guidelines at Guy’s and St Thomas’ Hospital in London state that post-operative delirium is preventable in one third of cases, and can be shortened if medics take simple steps – studies show that seeing a partner or close relative quickly after coming round reduces the chances of delirium setting in.

At Guy’s and St Thomas’, doctors aim for anyone at risk to be assessed within hours of an operation for changes in behaviour such as disorganised thinking, illusions, paranoia and sleep disturbances.

Some patients with severe and prolonged symptoms may be given medication, but Richard has found that advice from his consultant psychiatrist to stick to a regular routine has led to improvements in his condition.

His doctors say there is a good chance he will return to his former self in time. ‘I’m very hopeful,’ says Carole, ‘but I just wish we had known about this at the time because it would have saved us a lot of worry.’