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Anatomist || Aspiring Embryologist Body Science || Health Awareness and Medical Literacy NOT A CLINICAL CONSULTANT

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How a Foley catheter stays in place, and why the balloon must be deflated before removal. The retention balloon is what anchors a Foley catheter in the bladder. When inflated, it is much wider than the urethra, so pulling on the catheter forces that bulge through the bladder neck and urethra. This can cause pain, bleeding, tearing of the urethral lining, and later scarring or stricture. Deflating the balloon first returns the catheter to a smooth tube of uniform width, so it slides out easily and gently without damaging tissue.

How a Foley catheter stays in place, and why the balloon must be deflated before removal. The retention balloon is what anchors a Foley catheter in the bladder. When inflated, it is much wider than the urethra, so pulling on the catheter forces that bulge through the bladder neck and urethra. This can cause pain, bleeding, tearing of the urethral lining, and later scarring or stricture. Deflating the balloon first returns the catheter to a smooth tube of uniform width, so it slides out easily and gently without damaging tissue.

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