Bladder Distension: Is Your Urine Volume Normal?

The issue of the bladder bulging in the lower abdomen when feeling the urge to urinate?

Hello, doctor.
I am the person who asked question #109368 and I have some additional questions.
During the ultrasound, the doctor mentioned that my bladder was very distended, almost reaching my navel, and that it is rare to see such a distended bladder while the patient remains so calm.
The doctor asked how many times I go to the bathroom each day and how much water I drink.
I typically urinate about three times a day and consume around 2500 to 3000 ml of fluids, including water.
He mentioned that this frequency is somewhat low and suggested that I measure my urine output.
However, since I do not have any residual urine or other symptoms, he believes it should be fine.
When I measured my urine output, it reached about 1000 ml.
I found online that the normal bladder capacity for a person is around 400 to 600 ml, and I am a bit concerned whether there is something abnormal with my bladder.

Zhi Zhi, 20~29 year old female. Ask Date: 2016/07/29

Dr. Xu Peiqi reply Family Medicine

Hello, a single urine output of up to 1000ml without discomfort is indeed different from what is typical, but if you do not experience pain, difficulty urinating, and ultrasound examinations of the bladder and kidneys show no significant abnormalities, there is actually no need for concern.
However, if possible, it is advisable to go to the restroom at regular intervals rather than waiting until you feel the urge to urinate, as this can help avoid the awkwardness of a visibly distended abdomen when the bladder is full.
There are no two identical individuals in the world, and what is considered a "normal range" is merely a statistical result based on the majority.
Therefore, if you do not experience discomfort and have not identified any pathological abnormalities (such as tumors or urinary reflux), there is no need to fixate on whether you fall within the "normal range." Thank you for your inquiry.

Reply Date: 2016/07/29

More Info

Understanding bladder distension and urine volume is crucial for assessing urinary health. Your situation raises several important points regarding bladder capacity, urinary frequency, and potential underlying conditions.

First, let's clarify what constitutes normal bladder function. The average adult bladder can hold approximately 400 to 600 milliliters (ml) of urine comfortably. However, the sensation of needing to urinate typically occurs when the bladder fills to about 200 to 300 ml. Your report of being able to void 1000 ml at once is significantly above the average capacity, which may indicate bladder distension or hyperdistension. This can occur due to various factors, including bladder dysfunction, urinary retention, or even behavioral patterns such as habitual holding of urine.

In your case, the ultrasound findings indicating that your bladder was "very large" and nearly reaching your navel suggest that your bladder is capable of holding more urine than typical. This could be a result of chronic urinary retention, where the bladder does not empty completely during urination, leading to an accumulation of urine over time. It is essential to note that while your bladder can hold a large volume, this does not necessarily mean it is functioning optimally. Chronic distension can lead to bladder muscle weakening, decreased elasticity, and potential complications such as urinary tract infections or bladder damage.

Your reported urinary frequency of three times a day, despite a high fluid intake of 2500 to 3000 ml, is indeed concerning. Normally, adults should urinate about six to eight times a day, depending on fluid intake. The fact that you are urinating infrequently despite high fluid consumption may suggest that your bladder is not emptying effectively. This could be due to a variety of reasons, including bladder outlet obstruction, neurological issues affecting bladder control, or even behavioral factors such as anxiety about urinating in public, which you have mentioned in previous discussions.

It is also important to consider the quality of your urine. You mentioned that your urine is often pale or diluted, which can be a result of high fluid intake. However, if your urine is consistently clear and you are experiencing infrequent urination, it could indicate that your body is not processing fluids effectively. This could be a sign of an underlying condition, such as diabetes insipidus or other metabolic disorders, which can affect urine concentration.

Given your situation, it is advisable to keep a detailed record of your fluid intake, urine output, and any associated symptoms. This information can be invaluable for your healthcare provider in determining the underlying cause of your bladder distension and urinary patterns. Additionally, you may want to discuss the possibility of further diagnostic tests, such as urodynamics, which can assess how well your bladder and urethra are functioning.

In conclusion, while your bladder's ability to hold a large volume of urine may not be immediately alarming, it does warrant further investigation to ensure that there are no underlying issues affecting your urinary health. Regular follow-ups with your urologist and possibly a nephrologist may be beneficial in managing your symptoms and ensuring optimal bladder function.

Similar Q&A

Understanding Urinary Incontinence: Seeking Solutions for Persistent Symptoms

Hello Doctor: If I weren't at my wit's end, I wouldn't be saying so much... (1) At the end of February, I experienced some urinary leakage. One night, I performed Kegel exercises about five or six times, holding each for 15 seconds. A day or two later, the muscles ...

Dr. Du Shixi reply Urology
Hello: Your condition does not seem to require urodynamic studies, as the results are very likely to show no significant findings. Please maintain a regular lifestyle, drink water evenly, and engage in moderate exercise. If you are taking medications from other specialties, pleas...

Is My Bladder Capacity Normal? Understanding Urinary Health Concerns

Hello, doctor. I am 158 cm tall and weigh 47 kg, which makes me petite and slim. Every time I drink water, I feel the urge to urinate shortly after. I read online that the typical urine volume is about 250-300 cc, but the maximum I can hold before needing to relieve myself is aro...

Dr. Xu Wencang reply Urology
If the bladder capacity is smaller, it may be necessary to record the daily status for three days. Then, visit the outpatient clinic for a physician's evaluation.

Understanding Unusual Urination Patterns: Possible Causes and Concerns

Hello Doctor, recently I have noticed that my urine output is quite substantial, but I do not experience any bladder distension or pain. This is also the case for my first urination in the morning. I have been keeping a simple record of my fluid intake and urination over the past...

Dr. Li Xinyi reply Urology
Typically, the bladder begins to signal the need to urinate when it contains over 200 cc of urine, and one should not wait until it reaches over 600 cc to relieve themselves and then check for any reactions. There have been cases where patients have a habit of holding their urine...

Understanding Urinary Issues: Frequency, Capacity, and Discomfort Explained

Hello, doctor. Recently, I've been experiencing discomfort while urinating, with frequent urination at first. However, it has improved a lot. I've noticed that my urine volume has decreased. I've been keeping track, and each time I feel the urge to urinate, I only ...

Dr. Xu Weikai reply Urology
Hello, a urine output of 200-300cc is considered normal. Generally, most people will feel the initial urge to urinate at around 100-150cc, and a strong urge at approximately 250-300cc. When the bladder fills beyond 400cc, it becomes nearly unbearable. However, a few individuals c...