A claims analysis showed that ever receiving a sedative and the proportion of days receiving it can move differently.
Two measures of exposure
The study included 22,677 ventilated older adults across 267 Korean ICUs. Midazolam was the most commonly recorded medicine. With longer ventilation, the proportion of patients receiving several medication classes increased, while the percentages of person-days exposed decreased.
Why the denominator matters
More patients ever exposed does not necessarily mean treatment occurred on a larger share of their ICU days. Neither measure reconstructs infusion depth or individual clinical response. Claims lacked the full clinical severity context needed to judge appropriateness and safety. The historical benzodiazepine trend therefore should not be interpreted as proof of improved outcomes or a recommended dose. For reviewing prolonged ventilation, distinguish any use, duration, daily dose, and cumulative exposure before comparing treatment burden across patients.
Source paper
Original analysis of the supplied journal article, identified as PMC6661704.