Most babies are born around the 40th week of pregnancy. When a pregnancy continues past the 42d week, the placenta, which supplies the fetus with oxygen and nutrients, ages and becomes less efficient. ''The baby can have problems with its oxygen or food supply,'' Dr. Witter said. ''It may lose weight in utero and there may be fetal distress in labor.
Straining the first urine specimen of the morning is important, because a stone may pass into your bladder during the night. Look carefully at the strainer for a kidney stone. It may look like a grain of sand or a small piece of gravel.Any stone you find should be kept dry-do not put it in fluid or urine. kidney stone analysis is done to: 1  Find the chemical makeup of a kidney stone. 2  Guide treatment for a kidney stone. 3  Give information on how to prevent more kidney stones from forming.
You will probably be asked to strain your urine at home to look for stones. Your health care provider will tell you how to do this. Any stones you find can be sent to a medical lab to be examined. You will need to see your health care provider for a follow-up appointment in the weeks after your lithotripsy. You may have a nephrostomy drainage tube and will need to take care of it.