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This occurs when there is absolute or incomplete emptying of the bladder of urine.
- acute urinary retention - an acute cessation of urinary flow which may occur in otherwise normal individuals, especially males, postoperatively.
- chronic urinary retention - asymptomatic, the result of chronic incomplete bladder emptying; noted as an enlarged bladder on abdominal examination.
Patients with chronic urinary retention may develop acute-on-chronic retention. This may be precipitated by factors such as urinary tract infection or constipation. It causes absolute cessation of urinary flow.
Last reviewed 01/2018