Final answer:
The minimum number of METs indicating good functional capacity and no need for preoperative testing is usually considered to be 4 METs.
Step-by-step explanation:
The minimum number of METs indicating good functional capacity and no need for preoperative testing is usually considered to be 4 METs. METs, or metabolic equivalents, are a measure of the energy expenditure during physical activity. One MET represents the resting metabolic rate, which is about 3.5 milliliters of oxygen consumed per kilogram of body weight per minute.
For individuals with good functional capacity, such as those who are physically fit and have no significant underlying health conditions, achieving 4 METs or more on an exercise stress test is generally considered a positive outcome. It suggests that the individual can tolerate moderate physical activity and does not require further cardiac assessment before surgery.
However, it's important to note that the specific criteria for preoperative testing may vary depending on the individual, their medical history, and the type of surgery being considered. The decision to perform preoperative testing is ultimately made by the healthcare provider in consultation with the patient.