An emergency room patient’s heart rate dropped 30% to 63 beats per minute. What was the patient’s heart rate prior to the drop in beats per minute?

To calculate the patient's heart rate prior to the drop in beats per minute, we can use the following formula:

Original heart rate = (New heart rate) / (1 - Percentage drop).
In this case, the new heart rate is 63 beats per minute and the percentage drop is 30%. Therefore, the original heart rate was:

Original heart rate = 63 / (1 - 0.3) = 90 beats per minute.
Therefore, the patient's heart rate prior to the drop in beats per minute was 90 beats per minute.