Answer:
Yes it is safer.
Step-by-step explanation:
It will be safer to calculate all the measurement in SI or us contemporary for the doctor and patient. All the medicines and exercise should be decided according to the measurements.
The weight of the patient should be measured in in a proper unit which could be analyzed by the doctor in an easy way. Also the conversion of weight from kilogram to lbs. or from pounds to kilogram should be done carefully as it could alter the result and his treatment.