A 45-year-old woman presents to the emergency department with acute substernal chest pain. The initial EKG shows nonspecific ST-segment changes, and a troponin level is ordered. The physician documents the vital signs and physical examination findings but fails to record the time of symptom onset, which is critical for interpreting troponin results and determining eligibility for reperfusion therapy. During a subsequent morbidity and mortality review, this omission is identified as a systems-level failure. The institution implements a mandatory checklist for all acute coronary syndrome evaluations that includes fields for symptom onset time, EKG findings, and serial troponin sampling intervals. Which of the following best describes the quality improvement principle being applied by this intervention?

1. A)Reducing diagnostic uncertainty by ordering additional biomarkers
2. B)Decreasing operational costs through streamlined documentation requirements
3. C)Improving patient satisfaction by reducing time spent in the emergency department
4. D)Reducing process variation through standardization and protocol adherenceGABARITO
5. E)Increasing physician autonomy by eliminating mandatory documentation standards