Excessive sodium: High urinary levels of sodium result in increased levels of calcium. Certain defects in the kidney tubules transport system, which cause imbalances in sodium and phosphate, can lead to high calcium levels in the urine. A diet high in salt can also produce this effect.
Some of the common causes of Decreased cardiac output may include: 1  Mitral regurgitation. 2  Azotemia. 3  Hypotension. Cardiac tamponade.  Restrictive 1  cardiomyopathy. more causes...Â».
Problems with this electrical conduction system can cause an arrhythmia. Arrhythmias can cause the heart to pump less effectively because the coordination of the heart muscle becomes uncoordinated. Certain arrhythmias increase your risk of other medical problems like stroke or blood clots. In an arrhythmia, abnormal electrical signals through the heart muscle may cause the heart to beat too fast, too slow, or in an irregular manner. In any of these situations, the heart may not be able to pump an adequate amount of blood to the body with each beat.