Results. Creatinine and creatinine clearance tests measure creatinine levels in your blood and urine. These tests give information about how well your kidneys are working. The creatinine clearance value is found from the amounts of creatinine in the urine and blood and from the amount of urine you pass in 24 hours.
This can control or prevent episodes of rapid heartbeat. ... The ventricles also beat rapidly, but not as rapidly as the atria, as not all the ... Reducing stress, as intense stress and anger can cause heart rhythm problems; Using over-the ... with caution, as some cold and cough medications contain stimulants that may trigger a rapid heartbeat. ... Atrial flutter is a type of abnormal fast beating ( arrhythmia ) in the atria. ...
This is another type of fast heartbeat. It's caused by there being an extra pathway through a part of the heart called the AV node. It can cause heart palpitations, fainting, or heart failure. In some cases, you can stop it simply by breathing in and bearing down. Some drugs can also stop this heart rhythm.ecause the heart is beating too fast, it can't fill up with enough blood. This can be a serious arrhythmia -- especially in people with heart disease -- and it may be linked to other symptoms. Ventricular fibrillation. This happens when the heart's lower chambers quiver and can't contract or pump blood to the body.