Medicine Units: Standard and Nonstandard

What is the unit of measurement for force in medicine using standard units?o

What is the unit of measurement for energy in medicine using nonstandard units?

What is an example of a repetitive measurement in medicine?

What is an example of a non-repetitive measurement in medicine?

Why is accuracy of measurement important in medicine?

What is a common reason for measurement error in medicine?

What should be the percentage of error in measurement in medicine?

What is the importance of having devices of reliable makes in medicine?

Standard units in medicine are measured in the same units as in other fields, e.g. force in newton, work in joule, and power in watts.
Nonstandard units in medicine are special units used to measure specific quantities, e.g. pressure in mmHg or cmHg, and energy in kilocalorie (Kcal) or calorie (Cal).

Repetitive measurements are quantities that occur at a regular frequency, e.g. pulse rate (70/min), breathing rate (16/min for men, 20/min for women), and frequencies of electrical signals from the brain.
Nonrepetitive quantities are movements or functions that do not occur at a regular frequency, e.g. kidney function, food digestion, nerve signals, and eye movement.

Measurements in medicine must be highly accurate, with a low percentage of error, to avoid risky diagnosis or treatment.
Measurement errors can occur due to:
- Instrumental errors: device or technical errors.
- Psychological reasons: blood pressure and pulse rate can be affected by psychological factors during measurement.