Clinical pharmacy in onco-hematology and bone marrow transplant: A valuable contribution to improving patient safety.

Introduction: It is known that clinical pharmacists intercept prescribing errors and contribute to patient safety in several medical specialties. The aim of this study was to identify, quantify and classify prescribing errors and pharmacist interventions carried out in onco-hematology and bone marrow transplant inpatient units.
Methods: This was a prospective and quantitative study, conducted from February 2018 to July 2018 in onco-hematology and bone marrow transplant inpatient units of a tertiary teaching hospital in Brazil. A pharmacist detected prescribing errors and performed interventions. The type and incidence of prescribing errors, error severity, type of pharmacist interventions, potential impact of interventions in patient care, and intervention acceptance rates were evaluated.
Results: A total of 1172 prescriptions were evaluated, 9% of them contained errors (total of 135 errors), and the most common error was related to prescribing the wrong dose (31.8%). Wrong dose and omission of drug were the two most frequent errors in onco-hematology, while wrong dose followed by inappropriate dilution were the most frequent in bone marrow transplantation. The pharmacist performed 135 interventions and the most common intervention was related to the treatment regimen (41.5%). Serious errors and very significant pharmacist interventions were the most frequent in both inpatient units. The acceptance rate of pharmacist interventions was high (90%).
Conclusions: Clinical pharmacy improves patient safety and quality of care in onco-hematology and bone marrow transplant inpatient units.