Opioid Medication Errors in Patients Followed by Home Palliative Care Support Teams in the Community of Madrid.

The presence of comorbidities and complex drug regimens makes palliative care patients more susceptible to opioid medication errors. Most of the studies conducted so far have mainly focused on patients admitted to hospitals or hospice facilities. During this study, we examined the frequency of medication errors with opioids and the causes and consequences for patients, followed by home palliative care teams. Errors occurred in 39% of patients ( n  = 378) and 27% of all prescribed opioids ( n  = 708). Of the 148 (39%) patients with error/s in the opioid/s prescribed, in 55% the patient and/or the caregiver were involved in the error; in 26% the health care providers were involved. An association was found between the presence of error in the prescribed opioid and the level of patient education, p = .038, and with the number of days of follow-up, p  < .001. Considering their formulation, the prescribed opioids were associated with medication error, type of error, and cause of the error. The study demonstrated an association between the route of administration and error p  < .004, and type of error p  < .001.