METs Equation:
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The MET (Metabolic Equivalent of Task) score estimates the energy cost of physical activities and is used to assess a patient's functional capacity before surgery. It helps evaluate cardiovascular risk and perioperative complications.
The calculator uses the MET score equation:
Where:
Explanation: The equation calculates MET score based on the duration of activity, with higher scores indicating better functional capacity.
Details: MET score assessment is crucial for preoperative evaluation, helping to identify patients at increased risk for perioperative cardiovascular events.
Tips: Enter the time in minutes. The value must be valid (time > 0).
Q1: What is a good MET score for surgery?
A: Generally, ≥4 METs is considered acceptable for most surgeries, while <4 METs indicates higher cardiovascular risk.
Q2: How is MET score related to activities?
A: 1 MET is resting energy expenditure. 4 METs ≈ climbing 2 flights of stairs, 10 METs ≈ strenuous sports.
Q3: When should MET score be assessed?
A: During preoperative evaluation, especially for patients with known or suspected cardiovascular disease.
Q4: Are there limitations to MET score assessment?
A: Self-reported activity levels may be inaccurate. Objective testing (stress test) may be needed in some cases.
Q5: Can MET score predict surgical outcomes?
A: Yes, lower MET scores are associated with higher perioperative cardiac events and mortality.