Chronic indwelling catheter usage in the elderly

General rule: catheters should be avoided in the management of incontinence unless specific indications are present. Indwelling catheterisation remains substantially overused in acute hospitals.

Three types of catheterisation: external (condom) — for intractable incontinence in a physically dependent man without retention; intermittent straight catheterisation — 2–4 times daily, keeping bladder volume below 400 mL, clean (not necessarily sterile) technique at home; and chronic indwelling catheterisation.

Indications for a chronic indwelling catheter (memorise this list):

Urinary retention that is causing persistent overflow incontinence, symptomatic infection or renal dysfunction, and cannot be corrected surgically or medically, and cannot practically be managed with intermittent catheterisation

Skin wounds, pressure ulcers or irritation being contaminated by incontinent urine

Care of terminally ill or severely impaired patients for whom bed and clothing changes are uncomfortable or disruptive

Patient preference where toileting or changing causes excessive discomfort

Complications: chronic bacteriuria (universal), symptomatic UTI and urosepsis, bladder and renal stones, periurethral and prostatic abscess, urethral trauma, erosion and fistula, catheter blockage and bypassing, pyelonephritis, and — with long-term use — bladder carcinoma. Catheters also promote immobility, falls (tethering), delirium and loss of dignity.

Key principles of catheter care — part 1 (system): maintain a sterile closed gravity-drainage system; avoid breaking the closed system; use clean technique when emptying or changing bags and wash hands between patients; secure the catheter to the upper thigh or lower abdomen to prevent perineal contamination and urethral traction injury.

Key principles — part 2 (hygiene and mechanics): avoid frequent or vigorous cleaning of the catheter entry site — washing with soapy water once a day is sufficient; do not routinely irrigate; if bypassing occurs without obstruction, consider bladder spasm and treat with a bladder relaxant; if blockage is frequent, increase fluid intake and acidify the urine with dilute acetic acid irrigation.

Key principles — part 3 (antibiotics and cultures): do not use routine prophylactic or suppressive urinary antiseptics or antimicrobials; do not perform surveillance cultures, because all chronically catheterised patients have bacteriuria which is often polymicrobial and changes frequently; and do not treat infection unless the patient develops symptoms.

Interpreting symptoms: symptoms in catheterised older patients are non-specific (fever, delirium, functional decline); other sources of infection must be carefully excluded before attributing them to the urinary tract.

When to investigate further: a patient with frequent symptomatic UTIs should have genitourinary evaluation to exclude stones, periurethral or prostatic abscess, and chronic pyelonephritis.

Alternatives to prefer: accessible toilets and toilet substitutes, scheduled toileting, intermittent catheterisation, external catheters in selected men, and highly absorbent launderable or disposable pads — these carry less morbidity and lower overall cost than an indwelling catheter.

SHEA/IDSA/APIC/AHA/Joint Commission CAUTI Compendium, 2022 Update (published 2023) makes avoidance of unnecessary catheters and prompt removal essential practices, with nurse-driven removal protocols, automatic stop-orders and daily necessity review; it also formalises urine-culture stewardship to stop reflex culturing of catheterised patients.

The same document addresses routine catheter replacement for catheters in place beyond 30 days — scheduled change is a standard-of-care question rather than an infection-prevention intervention, and catheters should not be changed reflexively to "treat" bacteriuria.

IDSA guidance continues to advise against screening for or treating asymptomatic bacteriuria in catheterised older adults; antibiotic use in this setting drives resistance without benefit — a particularly pressing issue given ICMR AMR surveillance data on carbapenem-resistant Enterobacterales in Indian hospitals.

Four indications, in one line: retention that cannot be fixed otherwise · contaminated wounds or pressure ulcers · terminal or severely impaired care comfort · patient preference where toileting is intolerable.

Three "do nots" that earn marks: do not irrigate routinely · do not send surveillance cultures · do not give prophylactic antibiotics.

Numbers: intermittent catheterisation 2–4 times daily, bladder volume <400 mL; catheters in place >30 days raise the replacement question; entry-site washing once daily.

Convenience is never an indication — for catheters, condom drainage, pads or garments.

Catheters are for specific indications, never for convenience.

Every chronically catheterised patient has bacteriuria — do not culture or treat it unless symptomatic.

Maintain a closed sterile drainage system and secure the catheter to prevent traction injury.

No routine irrigation, no routine prophylactic antibiotics, no surveillance cultures.

Bypassing without obstruction suggests bladder spasm.

Long-term catheterisation risks stones, abscess and bladder cancer.

Frequent symptomatic UTIs warrant genitourinary evaluation for stones or abscess.