Impact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational study

Abstract Background Pro re nata (PRN) medication is used “as needed” for symptoms such as agitation and insomnia, in addition to regular daily pharmacotherapy of mental disorders. However, there is no high-quality evidence on the effectiveness of psychotropic PRN medications and concerns have been r...

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Main Authors: Yoshitaka Saito, Kyohei Sumida, Hiroyuki Muraoka, Satoru Oishi, Ryutaro Suzuki, Taiyo Nishikawa, Shin Miyake, Yukihiro Tanno, Yuki Tobita, Katsuya Otori, Ken Inada
Format: Article
Language:English
Published: BMC 2025-01-01
Series:BMC Psychiatry
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Online Access:https://doi.org/10.1186/s12888-025-06508-w
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author Yoshitaka Saito
Kyohei Sumida
Hiroyuki Muraoka
Satoru Oishi
Ryutaro Suzuki
Taiyo Nishikawa
Shin Miyake
Yukihiro Tanno
Yuki Tobita
Katsuya Otori
Ken Inada
author_facet Yoshitaka Saito
Kyohei Sumida
Hiroyuki Muraoka
Satoru Oishi
Ryutaro Suzuki
Taiyo Nishikawa
Shin Miyake
Yukihiro Tanno
Yuki Tobita
Katsuya Otori
Ken Inada
author_sort Yoshitaka Saito
collection DOAJ
description Abstract Background Pro re nata (PRN) medication is used “as needed” for symptoms such as agitation and insomnia, in addition to regular daily pharmacotherapy of mental disorders. However, there is no high-quality evidence on the effectiveness of psychotropic PRN medications and concerns have been raised about their potential to contribute to polypharmacy. This study introduced a psychotropic PRN prescription-monitoring programme for psychiatric inpatients with the aim of examining the change before and after the implementation of the programme. Method This study included 389 patients admitted to the psychiatric department between 1 July 2021 and 30 June 2023. The psychotropic PRN prescription-monitoring programme was implemented in July 2022, and the participants were classified into monitoring and non-monitoring groups. Demographic data (age, sex, and diagnosis), regular prescriptions before admission and at discharge, psychotropic PRN prescriptions before admission and at discharge, and the total number of psychotropic PRN prescriptions during hospitalisation were compared between the two groups. Data on psychotropic prescription were collected by psychotropic category. The significance level of 5% was set at 1.67 × 10−3 using the Bonferroni correction for multiple testing. Results The psychotropic PRN prescription ratio at discharge in the monitoring group was 9.3%, which was significantly lower than the 28.1% in the non-monitoring group. The percentage of patients with a PRN prescription during hospitalisation in the monitoring group was 29.8%, which was significantly lower than the 64.5% in the non-monitoring group. In the non-monitoring group, there was no statistically significant difference in the number of psychotropic drugs prescribed regularly before and after admission. However, in the monitoring group, the number of psychotropic drugs in the regular prescriptions at discharge was 1.87 ± 1.24, which was significantly lower than 2.47 ± 1.90 in the regular prescription before admission. Conclusions Our findings suggest that a psychotropic PRN prescription-monitoring programme may contribute to the elimination of polypharmacy, including regular prescriptions. Further research is required to optimise psychotropic PRN prescriptions and reduce polypharmacy.
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spelling doaj-art-178383f15f294fe998940e40a3021f252025-01-19T12:34:22ZengBMCBMC Psychiatry1471-244X2025-01-012511910.1186/s12888-025-06508-wImpact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational studyYoshitaka Saito0Kyohei Sumida1Hiroyuki Muraoka2Satoru Oishi3Ryutaro Suzuki4Taiyo Nishikawa5Shin Miyake6Yukihiro Tanno7Yuki Tobita8Katsuya Otori9Ken Inada10Department of Psychiatry, Kitasato University, School of MedicineDepartment of Pharmacy, Kitasato University HospitalDepartment of Psychiatry, Kitasato University, School of MedicineDepartment of Psychiatry, Kitasato University, School of MedicineDepartment of Psychiatry, Kitasato University Graduate School of Medical SciencesDepartment of Psychiatry, Kitasato University, School of MedicineDepartment of Psychiatry, Kitasato University, School of MedicineDepartment of Psychiatry, Kitasato University, School of MedicineSchool of Pharmacy, Kitasato UniversityDepartment of Pharmacy, Kitasato University HospitalDepartment of Psychiatry, Kitasato University, School of MedicineAbstract Background Pro re nata (PRN) medication is used “as needed” for symptoms such as agitation and insomnia, in addition to regular daily pharmacotherapy of mental disorders. However, there is no high-quality evidence on the effectiveness of psychotropic PRN medications and concerns have been raised about their potential to contribute to polypharmacy. This study introduced a psychotropic PRN prescription-monitoring programme for psychiatric inpatients with the aim of examining the change before and after the implementation of the programme. Method This study included 389 patients admitted to the psychiatric department between 1 July 2021 and 30 June 2023. The psychotropic PRN prescription-monitoring programme was implemented in July 2022, and the participants were classified into monitoring and non-monitoring groups. Demographic data (age, sex, and diagnosis), regular prescriptions before admission and at discharge, psychotropic PRN prescriptions before admission and at discharge, and the total number of psychotropic PRN prescriptions during hospitalisation were compared between the two groups. Data on psychotropic prescription were collected by psychotropic category. The significance level of 5% was set at 1.67 × 10−3 using the Bonferroni correction for multiple testing. Results The psychotropic PRN prescription ratio at discharge in the monitoring group was 9.3%, which was significantly lower than the 28.1% in the non-monitoring group. The percentage of patients with a PRN prescription during hospitalisation in the monitoring group was 29.8%, which was significantly lower than the 64.5% in the non-monitoring group. In the non-monitoring group, there was no statistically significant difference in the number of psychotropic drugs prescribed regularly before and after admission. However, in the monitoring group, the number of psychotropic drugs in the regular prescriptions at discharge was 1.87 ± 1.24, which was significantly lower than 2.47 ± 1.90 in the regular prescription before admission. Conclusions Our findings suggest that a psychotropic PRN prescription-monitoring programme may contribute to the elimination of polypharmacy, including regular prescriptions. Further research is required to optimise psychotropic PRN prescriptions and reduce polypharmacy.https://doi.org/10.1186/s12888-025-06508-wPolypharmacyPrescription drug monitoring programmePro re nataPsychotropic drugs
spellingShingle Yoshitaka Saito
Kyohei Sumida
Hiroyuki Muraoka
Satoru Oishi
Ryutaro Suzuki
Taiyo Nishikawa
Shin Miyake
Yukihiro Tanno
Yuki Tobita
Katsuya Otori
Ken Inada
Impact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational study
BMC Psychiatry
Polypharmacy
Prescription drug monitoring programme
Pro re nata
Psychotropic drugs
title Impact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational study
title_full Impact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational study
title_fullStr Impact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational study
title_full_unstemmed Impact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational study
title_short Impact of psychotropic pro re nata prescription-monitoring programme on prescriptions for inpatients with psychiatric disorders: a retrospective observational study
title_sort impact of psychotropic pro re nata prescription monitoring programme on prescriptions for inpatients with psychiatric disorders a retrospective observational study
topic Polypharmacy
Prescription drug monitoring programme
Pro re nata
Psychotropic drugs
url https://doi.org/10.1186/s12888-025-06508-w
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