1) The study assessed the appropriateness of 174 patient admissions to an internal medicine ward in Portugal using the prospective Appropriateness Evaluation Protocol (AEP). 2) They found that 17.7% of admissions were inappropriate, similar to other studies in the Iberian Peninsula. The most common reason for appropriateness was intravenous therapy. 3) Patients admitted on weekends had significantly longer hospital stays than those admitted on weekdays, possibly due to lack of elective care on weekends.