1.   Body temperature is higher in the daytime than at night, and urine flow is lower overnight.

2.   In both states, urine flow is high, since the urine remains continuously dilute.

3.   Osmotic diuretics cause in-creased potassium losses, probably primarily because of the increased urine flow accompanying them.

4.   Similarly, adaptation to very high intakes requires several days and ample urine flow.

5.   Thus, it is essential to monitor urine flow, serum tonicity, and body weight during the deprivation.

6.   A surgeon will go in through the urethra and carve out parts of the prostate that are putting pressure on the urethra and restricting urine flow.

7.   But it may interfere with normal urine flow, resulting in an increase in frequency of urination, the need to urinate during the night and urinary tract infections.

8.   His heartbeat, pulse and even urine flow will be monitored for studies of the effect of weightlessness on an aged human body.

9.   Pain medications are given as needed, and urine flow is monitored to make sure the kidneys function properly.

10.   Operations to restore urine flow, however, can easily fail, particularly when performed by less-experienced surgeons.