Windows might tell you that you can't open it, or in the worst case, you might encounter a SCU file related error message. Before you can open a SCU file, you'll need to figure out what kind of file the SCU file extension refers to. Tip: Incorrect SCU file association errors can be a symptom of other underlying issues within your Windows operating system.
Relevance. Rating Newest Oldest. Best Answer: sinus bradycardia means slow heart rate sinus arrythmia means heart is not beating in the normal rythym but the heart beat is still starting in the right place. Many people live wiht this for their whole lives and never even know they have it. Stress less. Source(s): experience.
Rating Newest Oldest. Best Answer: Normal sinus rhythm only means that the rhythm is normal. There could many abnormalities other than that of rhythm, like for example, left ventricular hypertrophy in a person with high blood pressure.But you have to verify the report generated by a computer by getting it read by a physician.Source(s):ower than 60 is brady sinus rhythm and faster than 100 is tachy sinus rhythm. The abnormalities can be numerous things for a prolonged P R interval, blocks, abnormal T shapes, to elevations in T waves, and many more things.