@dalehileman,
dalehileman wrote:
Does a slower hr seriously affect the kidneys
Kidney function is measured by the
glomerular filtration rate, the rate at which each kidney performs its continual processing and cleansing of blood. The normal glomerular filtration rate is about 100 ml/min. If the kidney is damaged so that the glomerular filtration rate is only 5 ml/min or less,
hyperkalemia may result, especially if high-potassium foods are consumed.
The elderly are at particular risk, since many regulatory functions of the body do not work well in this population. Elderly patients who are being treated with certain drugs for high blood pressure, such as spironolactone (Aldactone) and triamterene (Dyazide), must especially be monitored for possible hyperkalemia, as these medications promote the retention of potassium by the kidneys.(Medical Dictionary online edition )
Important points: glomerular filtration rate: the rate at which blood is filtered through a part of the kidney called the glomerulus.
Hyperkalemia: elevated blood levels of the ion potassium ( K ).
With the elderly on blood pressure meds, kidney function may be reduced and the level of potassium (K) may increase to the point that potassium "feedbacks" to slow down the heart rate. That's the beauty of human physiology.
Basically the kidneys play a critical role in regulating heart rate, in part by regulating glomerular filtration rate and the level of potassium in the blood.
Remember, this is just very brief description of what's going on. But I suspect you see the picture from what I've described.