Nehmo sergheye 2009-05-17 01:20:58
For a normal (I suppose this may vary with age) 210 lb (95 kg) male,
what’s the typical volume of urine disposed of at one time? In other
words, if you feel your bladder is full, and you urinate, how much
should be there?
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Derek f 2009-05-17 01:21:01
I have been surprised by the authoritative answer from urologists that
normal capacity/urinination is 500ml. The bladder can of course stretch with
retention to five times that amount.
Nehmo sergheye 2009-05-17 01:21:04
- Nehmo –
– Derek F –
– Nehmo –
500 ml sounds low. And the five factor sounds high. I couldn’t stretch
that far, that’s for sure.
I haven’t yet found an answer on the web.
(Verbatim content on several different sites.)
Normal Values: 800 to 2000 ml/day (with a normal fluid intake of about
So then a reasonable question would be, How many times a day do men
urinate on average?
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Ed 2009-05-17 01:21:07
Urine volume varies a lot. To find out your own capacity, pee in a
bottle and measure it. It’s that simple. It will vary from hour to
hour, and also from person to person.
My volume is around 250 mL, but usually I discharge less than that,
around 150 mL during the day and a bit more at night. I’ve had acute
retention and the volume then (after a couple of agonizing hours in
emergency) was around 1100 mL. At that volume I was getting pretty
ugly bladder spasms, and bleeding was happening from the bladder
The number of times you have to get up at night depends on the
effective bladder volume and on how much urine is produced during your
normal sleep period. For me, I typically make 400-500 mL per night. So
I need to get up twice usually. Sometimes (couple times a month) my
body makes 800-900 mL per night, and consequently I make many trips at
night, and under those circumstances peeing can be slow and stressful.
They say the body makes about 1 mL urine per minute, as a rough
average. During the day I need to pee once every 2-3 hours, so that
kind of figures.
There have been periods when I peed only 50 mL or so, and then I
visited the john every hour.
Consuming salty food slows urine production. Caffeine they say does
And that is my take on the physics and chemistry of peeing.
Chockman 2009-05-17 01:21:10
The Encylopedia of Nursing and Allied Care says…
“The normal bladder should not begin contractions during filling and
should initially expand without resistance. A feeling of fullness occurs
with a volume of 100-200 ml. Adult bladder capacity varies dependent on
gender. Normal adult female bladder capacity ranges between 250 to 550
ml, and normal adult male capacity ranges from 350 to 750 ml.”
Chockman 2009-05-17 01:21:13
Take a look at the following reference…
Matthew emme 2009-05-17 01:21:16
Those numbers are probably about right. Much depends on the person. Most
people feel very full at about 500cc and have a first sensation around that
150cc range. When you do testing of bladder function in the office often
the volumes are lower because you fill the bladder quicker.
Derek f 2009-05-17 01:21:20
I have always felt that filling up before bladder function tests must give a
result different from the persons normal bladder activity. A urologist
compared it to a guy drinking three pints of beer. He will not need to go to
the toilet for some time but when he does and passes 500 ml he will find
that he has to go again several times in a short period of time.
Juan moreira 2009-05-17 01:21:23
Ed, you describe almost my own symptoms. And my doctor says that I am long
due for surgery. Can you please, tell us more about your own prognostics and
treatments? Should I listen to my doctor and apply for surgery, or keep
waiting as I do?
Mombu 2009-05-17 01:21:26
Go for the surgery now. Over the last few years it has become “minor”
surgery, although no surgery is really minor. Laser surgery involves
almost no bleeding and recovery varies but after a few days you can
resume normal activities. Another argument is that repeated bladder
stretching is not good. Get it done now and odds are you will wonder
why you waited so long.
Juan moreira 2009-05-17 01:21:30
Your advice is sensible; my doctor thinks the same. But, on the other hand,
I also read technical stuff (although I am not a doctor), and after
evaluation, I decided to try Avodart + Doxasozin, according to:
I’ve been taking this for three months, and the results, if any, will be
seen after 6 months. In any case, the article says that in many cases
surgery can be posponed for many years.
I’d like to read more comments.
Vince puma 2009-05-17 01:21:33
I second Fred’s suggestion to get the surgery and get relief, but I also
emphasize his caution to remember that no surgery is really “minor.” As you
can read in several posts here, for some (including me), the surgery was
more “minor” than it was for others–for some, it was “major.”
“Some men see things as they are and say ‘Why?’
I dream of things that never were and say ‘Why not?'”
–George Bernard Shaw
Ed 2009-05-17 06:07:33
I’ve had BPH for around 7 years. Started with almost no symptoms
except that I was not able to pee (at all) when the bladder was
over-full. The symptoms gradually got worse, especially during 2004,
when I had things like 2-day episodes of needing to pee every hour,
acute retention during the night (from over-full bladder), and up 45
minutes at a time at night trying to void.
In early 2005 my prostate was determined to be about 150 mL by
ultrasound. A PVP or especially a TURP would be very risky at that
My uro put me on Flomax and Proscar in early March ’05. Symptoms have
improved quite a bit. He implies that if meds are working, then
surgery may be unnecessary. Suits me.
From reading this group, it seems that most people who have surgery
are quite satisfied with the results, but some have little change in
symptoms or are disappointed, and once in a while you have one who has
had very bad results and is bitter. You can’t undo surgery, but drug
therapy can be reversed. So for now, it’s drugs for me. Side reactions
so far are minor.
Sorry to "jump in the car here", but what surgical procedure are we talking about here? (just out of curiosity)--- thanx
Derek f 2009-05-17 06:07:49
Try this and the Laserscope link http://tinyurl.com/83onz
PVP. Wow--interesting. Sounds gnarly. thanx
Jon d 2009-05-17 06:08:40
What does the surgery do to you?
Jon d 2009-05-17 10:50:35
Jeeze those are high figures when I compare myself. I get a sense of urgency at 400 ml or below and I need to go. 500 ml would be a triumph for me but it is not a volume I ever recall having measured. The weird thing is that there is a lot of psychological imput to the sense of urgency. I can drink half a glass of water and, if I am almost ready to go, I will feel I really have to go. This drinking-water urgency would probably pass if I waited long enough - but I have never waited long enough!
Lee m. 2009-05-17 10:50:41
There is absolutely a psychological connection. I will typically feel the urge to go with 200ml or so but if I get distracted and forget about it, I may last another hour or two before I go. I am on Ditropan and that has helped but not to the extent I'd like.
Jon d 2009-05-17 15:37:52
On Mon 04 Jul 2005 21:49:09, Chockman wrote:
Interesting article. It says:
“A feeling of fullness occurs with a volume of 100-200 ml”
but this figure seems rather on the low side to me.
For completeness I should say that it goes on like this:
“Normal adult female bladder capacity ranges between 250 to 550
ml, and normal adult male capacity ranges from 350 to 750 ml”.
Jeff 2009-05-17 15:37:56
I think a feeling of fullness means that one feels that (s)he has to pee. I
would think that the normal bladder capacity range would be from like 250 –
750 ml (female) and maybe 350 to 1000 ml male. There are times I have peed
for what seems like 2 minutes, so I think my capacity is higher than 1000
ml. However, what time of day, how fast I am making urine, when the next
coffee break is, whether or not I have to p***, how much stool is in my
r*****, how much caffeine I drank that day and other factors affect my
bladder capacity and my feeling that I have to pee.