NEW ORLEANS – Neil M. Resnick, MD, has devoted more than 30 years of his career to refining the diagnosis and management of geriatric urinary incontinence. He has found it to be a deeply rewarding area of his medical practice. And he wants primary care physicians to share the joy.

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Once you get the hang of it, you’re going to love it,” he promised at the annual meeting of the American College of Physicians.

“There is so much you have to offer, and it’s going to make you one happy, fulfilled, non–burned-out physician,” added Dr. Resnick, professor of medicine and chief of the division of geriatric medicine at the University of Pittsburgh.

He insisted that geriatric urinary incontinence belongs squarely in the province of primary care physicians, not just urologic surgeons. That’s because the condition is typically caused or exacerbated by medical diseases and drugs.

“These are things for which we are the experts, because they are conditions outside the bladder that our surgical colleagues aren’t always expert in,” the internist emphasized.

The seven reversible causes of geriatric urinary incontinence, which are categorized as transient urinary incontinence, can easily be remembered by busy primary care practitioners with the aid of a mnemonic of Dr. Resnick’s own devising: DIAPERS. It stands for Delirium, Infection, Atrophic urethritis/vaginitis, Pharmaceuticals, Excess urine output, Restricted mobility, and Stool impaction.

“Treatable causes of urinary incontinence are much more common in older people than in the young,” Dr. Resnick said. “If you just pay attention to these, and you can’t even spell ‘bladder,’ you can cure one-third of older patients. It’s pretty dramatic. And it improves the incontinence in all of the people in whom it’s still persistent, and that means improved responsiveness to further treatment addressing the urinary tract, improvement of other problems related to the incontinence, better quality of life, and it just makes patients better overall. This is really the joy and glory of geriatrics.”

He emphasized that urinary incontinence is never normal, no matter how advanced the patient’s age. The basic geriatric principle is that aging reduces resilience. Bladder sensation and contractility decrease with age. The prostate enlarges. Sphincter strength and urethral length decrease in older women. Involuntary bladder contractions occur in half of all elderly individuals. Nocturnal urine excretion increases. Postvoid urine volume creeps up to 50-100 mL. These are normal changes, but they predispose to tipping over into urinary incontinence in the setting of any additional challenges created by DIAPERS.

The scope of the problem

More than one-third of elderly individuals experience urinary incontinence with daily to weekly frequency. The associated morbidity includes cellulitis, perineal rashes, pressure ulcers, falls, fractures, anxiety, depression, and sexual dysfunction. The economic cost of geriatric urinary incontinence is believed to exceed that of coronary artery bypass surgery and renal dialysis combined.

“The morbidity is huge and the costs are astonishing,” the geriatrician declared.

Fewer than one-fifth and perhaps as few as one-tenth of affected patients actually require surgery.

Less than 20% of elderly patients with urinary incontinence volunteer that information to their primary care physician because of the stigma involved. So, it’s important to ask about it, he noted.

The lowdown on DIAPERS

Delirium. “The last thing you want to do is refer a patient with urinary incontinence and delirium to a urologist for cystoscopy or urodynamic testing,” according to Dr. Resnick. “It misses the point: The problem is their brain is not working. If you address the causes of delirium, once the delirium subsides, the incontinence will abate.” However, addressing the cause of the acute confusional state can be challenging, he conceded, because delirium can result from virtually any drug or disease anywhere in the body.
Infection. Acute urinary tract infection (UTI) is the cause of about only 3% of geriatric urinary incontinence. But when present, it’s simple enough to diagnosis and treat. Far more common is asymptomatic bacteriuria, which is present in about 20% of elderly men and 40% of elderly women but does not cause incontinence.
“The key symptom is dysuria: If the patient [with bacteriuria] has new-onset urinary incontinence or worsened urinary incontinence that’s happened for only the last couple days, that’s an acute UTI that needs to be treated,” Dr. Resnick advised. “Other than that, don’t treat. All you’ll do is select for more virulent organisms, so when the patient does get an acute UTI, it’s tougher to treat.”
Atrophic vaginitis/urethritis. A common condition when endogenous estrogen goes down. It is characterized by vaginal and urethral erosions and tissue friability. When an affected woman urinates, the acid urine gains exposure to the underlying subendothelial tissue, causing inflammation and irritation that prevent the urethra from closing properly. This condition, frequently mistaken for a UTI, responds well to low-dose topical estrogen in the form of either an easily implantable ring that lasts for 3 months or a topical estrogen cream applied once daily, after establishing the absence of breast or uterine cancer.
“It takes weeks to months for this condition to remit,” he said. “So, if they’re doing cream, they do it every day for a month. Then every month, they pull back by one day. Eventually, they get to the point where they can be maintained with once- or twice-weekly application.”
Pharmaceuticals. The list of potential offenders is lengthy. Dr. Resnick focused on six types of medications that are most often linked to increased risk of geriatric urinary incontinence. Those six include long-acting sedative hypnotics, including diazepam (Valium); loop diuretics; and anticholinergic agents, including sedating antihistamines, antipsychotics, tricyclic antidepressants, and tiotropium bromide (Spiriva).
They also include adrenergic agents, with alpha-adrenergic blockers causing or contributing to urinary incontinence in women and alpha-adrenergic agonists – present in a vast number of OTC cold, sleep, and cough medications – being responsible for problems in men; drugs causing fluid accumulation, including the dihydropyridine calcium channel blockers, NSAIDs, some Parkinson’s agents, and gabapentin/pregabalin; and ACE inhibitors because of their side effect of cough.
“The most common problem drugs in my practice are calcium channel blockers and gabapentin or pregabalin,” according to the geriatrician.
Excess urine output. Older people have smaller bladders. Dr. Resnick loathes the popular advice to drink 8 glasses of water per day. Every time that so-called health tip appears in the mass media, he sees a flurry of patients with new-onset geriatric urinary incontinence. Other causes of excess urine output include alcohol, caffeine, metabolic disorders including hyperglycemia, and peripheral edema attributable to heart failure or venous insufficiency.
Restricted mobility. This often results from overlooked correctable conditions that bedevil older people, including poorly fitting shoes, calluses, bunions, and deformed toenails, as well as readily treatable disorders including depression, orthostatic or postprandial hypotension, and arthritis pain.
Stool impaction. “The clinical key is new onset of double incontinence associated with bladder distension. One gloved finger will disimpact and cure both,” Dr. Resnick said.
In patients whose urinary incontinence persists after systematic attention to the DIAPERS details, there are only four possible mechanisms, according to Dr. Resnick: an overactive detrusor or stress incontinence, which can be categorized as storage problems, or an underactive detrusor or a urethral obstruction, which can be considered emptying problems.

Dr. Resnick reported having no financial conflicts of interest regarding his presentation.

bjancin@mdedge.com

Takashi Shiga, MD, MPH

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