218 results found
Medical tests
… Many people have irregular heartbeats ( arrhythmias ) from time to time. What this means depends on the type of pattern they … how long they last, and whether they occur at the same time you have symptoms. Because arrhythmias can come and go, …
Medical tests
Medical tests
Medical tests
… NREM and REM alternate through these stages about 4 to 6 times during a night's sleep. A change in this cycle may … This test measures to see if you can stay awake during a time when you are normally awake. If your doctor thinks that … and when you are awake. It helps your doctor learn what times during the day you are active and what times you are …
Medical tests
Medical tests
Medical tests
Medical tests
… urine. In the blood, amylase levels rise for only a short time. In the urine, amylase may remain high for several … your bladder, but don't save this urine. Write down the time that you urinated to mark the start of your 24-hour … for the 24 hours. Empty your bladder for the final time at or just before the end of the 24-hour period. Add …
Medical tests
… seconds. All kits tell you to wait a specific amount of time before reading the results. When to test Most home … skipping any of them. If a step in the test needs to be timed, use a clock. Do not guess at the timing. How It Is … kit to kit. Be sure to read the result at the appropriate time indicated in the instructions for accurate results. If …
Medical tests
… at how urine is made and flows out of the kidneys. Sometimes a doctor will do multiple scans at one time (for example, a triple renal study). Different … or pockets of infection ( abscesses ). The amount of time it takes for the tracer to move through the kidney, …
