Antibiotics are used to treat or prevent some types of bacterial infections. They aren't effective against viral infections, such as the common cold or flu. Antibiotics should only be prescribed to treat conditions:
1 A normal adult resting heart beat is between 60-100 heartbeats per minute. 2  Some experienced athletes may see their resting heartrate fall below 60 beats per minute. 3  Tachycardia refers to the heart beating too fast at rest-over 100 beats per minute.
Normal Sinus Rhythm. Description. A normal heart rhythm is called normal sinus rhythm (NSR for short). An NSR will have a heart rate (this is the same as the pulse) between 50 and 100 beats per minute and a normal impulse formation from the SA node (P wave).lso, all the waveforms must be of a normal shape with no ST changes. In children, normal heart rate ranges are much higher. Infants to 1 year have a normal range to 180 beats per minute, 1-3 years to 150 beats per minute, 4-10 years to 130 beats per minute and 110 beats per minute to age 16.