After a trial without catheter how much urine does there have to be in your bladder for you to be recatheterised bladder scan?

Answer 1

Usually guidelines vary as to how much urine there has to be within the bladder. This amount can be assessed either by a bladder scanner or by inserting a catheter, draining the urine, and removing it or keeping it there if the amount is over the limit stipulated by the guidelines available. The amount of urine (residual urine) is between 150mls (least amount found in the literature and 250mls. Obviously, the amount alone is not a good indication. The number of previous voiding episodes and the amount voided in each, together with age and thickness of the bladder wall are things to be considered. For example, is one has passed an average of 150mls of urine per void on 3 or 4 occasions, a residual on scan of 150mls will not warrant catheterisation since most likely that will be voided in the next void. What I mean is that there is no cut off point and the picture is different for every patient seen.

Answer 2

The specific amount of urine required to consider recatheterization after a trial without a catheter can vary depending on individual factors and medical guidelines. Generally, if there is a significant amount of residual urine in the bladder, typically above 200 mL, it may indicate the need for recatheterization. However, the decision should be made by a healthcare professional based on the patient's clinical condition and medical history.