Final answer:
A pulse rate of 125 bpm is documented as tachycardia, which is a condition characterized by an abnormally high resting heart rate exceeding the normal adult range of 60-100 bpm.
Step-by-step explanation:
When a nurse records a client's pulse rate as being 125 beats per minute (bpm), this rate is documented in the medical records as tachycardia. Tachycardia is the condition where the resting heart rate is above the normal range of 60 to 100 bpm for adults. It is important to note that tachycardia is not considered normal for a resting patient and may indicate an underlying medical condition or a response to certain stimuli such as extreme stress or physical activity.