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Reconciliation of weekly methotrexate for non-oncologic use: results from a prospective cohort

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European Statement

Clinical Pharmacy Services

Author(s)

Adrian Viudez-Martinez, Ana Ramirez-Lopez, Javier Lopez-Nieto, Geronima Riera, Eduardo Climent-Grana

Why was it done?

Medication errors harm at least 1.5 million people every year. According to the Institute for Safe Medication Practice (ISMP), ongoing errors with oral methotrexate (MTX) for non-oncologic use suggest that more needs to be done to reduce the risk of patient harm, especially considering its potentially severe side effects.

What was done?

Identification and prevention of MTX-related medication errors for non-oncologic use by medication reconciliation at hospital admission. Analysis of errors’ type prevalence were also performed.

How was it done?

Design: prospective cohort performed in a tertiary hospital from September 2021 to April 2023.
Inclusion criteria: Inpatients with weekly methotrexate for non-oncologic use.
Intervention applied: medication reconciliation comparing inpatient’s e-prescription, clinical record, outpatient medication history and pharmacist-driven interview.
Data analysed: demographic data (age, sex, admission cause) treatment-related data (indication, methotrexate and folic acid posology, administration route, day of the week).

What has been achieved?

Out of 79 admission episodes (53.1 % men, median age: 72 years (range: 18-96 years), 63 (80% )were urgent.
Most patients had been prescribed methotrexate for rheumatoid arthritis (n=56), but also for polyarthritis (n=9), psoriatic arthritis (n=8), pulmonary sarcoidosis (n=2), pemphigus (n=1), spondylarthritis (n=1) and Still syndrome (n=1).
Methotrexate doses’ frequency were: 15 mg (28.9%), 10 mg (27.6%), 20 mg (11.9%), 7.5 mg (9.2%), 25 mg (7.9%), 12.5 mg (6.6%), 17.5 mg (5.3%) and 5 mg (2.6%).
Medication errors were identified and prevented in 38 out of the 77 episodes recorded (49.4%). There were classified as follows: dose (38.5%), day (17.9%), dose and day (17.9%), dose and administration route (10.3%), omission (10.3%), administration route (2.6%) and lack of indication (2.6%).
Folic acid doses’ frequency was: 10 mg the day after MTX (47%), 5 mg the day after MTX (28%), 5 mg daily except the same day as MTX (17%), 15 mg the day after MTX (8%).

Medication errors were identified and prevented in 51 out of the 77 episodes recorded (66.2%). There were classified as follows: omission (38.8%), day (33.3%), day and dose (16.7%), dose (9.3%) and drug (1.9%).

What next?

Performing medication reconciliation in every admission, measuring its potential benefits using validated tools for clinical pharmacists’ intervention assessment, such as the CLEO tool, which can, ultimately, serve as preamble to objectively measure the pharmacists’ impact in healthcare efficiency and patients’ safety.

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