The most common cause of obstruction is a urethral plug, which consists of mineral crystals (e.g., struvite, calcium oxalate), white blood cells, red blood cells, protein (mucus), and epithelial cells.5 The underlying cause
of urethral plugs is unknown; however, plugs have been linked to struvite crystalluria — suggesting that diet may play a role — and idiopathic cystitis.6 Other causes of urethral obstruction include urethral edema and spasm associated with lower urinary tract inflammation and pain.7 Uroliths, neoplasms, and urethral strictures can also lead to urethral obstruction; however, they are reported less frequently than other causes.5
Not exact matches
This can be caused by urinary stones or
urethral plugs, which are made
of a soft substance that contains mucus / protein, minerals and cell material.
The term FLUTD or feline lower urinary tract disease is a term that refers to a number
of conditions that affect the urinary tract and urethra such as cystitis, urolithiasis (urinary stones),
urethral obstruction (blockage),
urethral plugs or cancer.
This is done by placing a urinary catheter through the
urethral opening and either through the obstruction itself, or using pulses
of flushing solution to move the
plug back into the bladder where it can be dissolved.
If you see blood in your cat's urine, it is most probably a sign
of FLUTD, bladder stones or a
urethral plug — not an infection.
Urethral plugs can cause death in a matter
of hours.
Obstruction
of the urethra with a conglomeration
of inflammatory debris, crystals sloughed bladder tissue, and blood known as a
urethral plug
This is sometimes a «
plug»
of debris (crystals, blood, etc.) and it is sometimes a
urethral spasm.
Special diets that change the pH
of the urine may be prescribed to keep a
urethral plug from reforming.
This involves shortening and widening the urethra to allow
urethral plugs and other potentially obstructing materials to be eliminated without travelling through the narrowed portion
of the urethra in the penis.
In some cases, a cystotomy may not be necessary if the obstruction can be relieved by passing a catheter, especially if it is caused by soft
plugs of crystals and mucus or
urethral spasms.
Urinary tract infections, urinary stones or crystals,
urethral plugs, cancer, and other disorders can affect the lower urinary tract
of the cat.
Analysis
of 451,891 canine uroliths, feline uroliths, and feline
urethral plugs from 1981 to 2007: perspectives from the Minnesota Urolith Center.
The most common causes
of urinary obstructions in male cats are due to urinary tract stones or
urethral mucus
plugs.
Urethral Blockage: Crystallization
of minerals in the bladder
plug up the urethra leading to blockage
of urinary outflow.