Experiencing High Heart Rate. Had COPD And Radiation For Breast Cancer. Taking Metroprolol, But No Help. Suggest?
The metoprolol that you are using for high blood pressure should help reduce the heart. This is one of the uses or side effects of this medication, it slows the heart.
In the normal heart beat there is a specific area of the heart where the 'current' starts off. This 'current' spreads to the other parts of the heart along a specific pathway to cause the heart to beat or contract.
Abnormal rhythms or rates such as your increase in heart rate may be due (1)to the 'current' starting off at any abnormal point (2) increase stimulation at this point for the heart to beat (3) the 'current' travelling along another pathway (4) a block along the normal pathway.
In some persons with COPD, there can be retention of carbon dioxide which can result in an increase in heart rate.
You may need an ECG to look at the rate and rhythm of the heart. The ECG can also let you know if there is any enlargement of any areas, areas with reduced blood supply or areas where there may a blockage in the transmission of the current.
A blood test checking your thyroid and blood count would also be helpful.
High levels of thyroid hormone can result in an increase in heart rate , anemia can also do this.
If these are abnormal then treatment of the specific condition would help.
Anxiety and stress can also result in an increase, it can also occur as a side effect of some medications.
In terms of treatment, it is influence somewhat by the cause but beta blockers are one of the main medications used so your doctor may suggest increasing the dose.
I hope this helps, feel free to ask any other questions