Objective: Based on the medical information system HMISS 7 level review in our hospital

explore its application in improving the informationization of pharmacy intravenous admixture services (PIVAS) closed-loop management model. Methods: The application of the information system created by HIMSS 7 level in PIVAS was observed

and the transformation effect was evaluated by comparing the results of relevant indicators of PIVAS management in all aspects before and after the information system upgrade. Results: After the modification of PIVAS information system

the qualified rate of prescriptions increased from 98.14% to 98.96%; the time of pre-prescription review was reduced from 4

821.56±31.42 s to 2

464.22±48.26 s; the internal error rate decreased from 0.314‰ to 0.175‰; the average packing time of 1 batch and 4 batches of finished liquid decreased from (1

920.54±24.16) s and (1

026.13±40.31) s to (1

141.46±38.70) s and (546.22±35.28) s; the ward nurse satisfaction increased from 93.61% to 97.56%. Conclusion: The construction of PIVAS information system under HIMSS 7 evaluation standard can effectively implement closed-loop management of work processes

improve work efficiency

reduce medication errorsand medical satisfaction of ward.