External validation of a clinical pharmacy intervention in geriatric inpatients: a controlled study.

Background Clinical pharmacist interventions have been shown to improve drug use in older adults. Study findings are seldom externally validated however. Objective First, to validate a minimized iteration of a previously tested intervention of clinical pharmacists in a non-academic setting with limited staffing resources. Second, to compare the potentially inappropriate medication (PIM) reduction to two previous controlled interventional studies. Methods A controlled study was performed at geriatric wards. The control group received usual care. The intervention group was exposed to a clinical pharmacist led medication review, based on the use of the RASP list, (the Rationalization of Home Medication by an Adjusted STOPP list in Older Patients). Drug use on admission and at discharge were evaluated, including the number of RASP-identified potentially inappropriate medications (PIMs). The PIM reduction was compared to two previous controlled study findings using a linear mixed model. Results Drug use declined during hospital stay, without differences between control (n = 29) and intervention group (n = 32). Antidepressants and hypnotic drugs were discontinued more frequently in IG patients. More PIMs were reduced in the intervention patients (control vs. intervention: 1.0 vs. 3.0, p < 0.001). Across three controlled studies, a robust reduction of 1.56 PIMs (95% confidence interval 1.10-2.02, p < 0.001) was observed in favor of the CP interventions. Conclusion The minimal CP intervention resulted in fewer RASP PIMs. No net reduction of drug use was observed, yet fewer antidepressants and hypnotic drugs were used. The RASP PIM reduction was comparable to previous investigations.

Combined Use of the Rationalization of Home Medication by an Adjusted STOPP in Older Patients (RASP) List and a Pharmacist-Led Medication Review in Very Old Inpatients: Impact on Quality of Prescribing and Clinical Outcome.

BACKGROUND: Polypharmacy and potentially inappropriate drugs have been associated with negative outcomes in older adults which might be reduced by pharmacist interventions. OBJECTIVES: Our objective was to evaluate the effect of a pharmacist intervention, consisting of the application of the Rationalization of home medication by an Adjusted STOPP in older Patients (RASP) list and a pharmacist-led medication review on polypharmacy, the quality of prescribing, and clinical outcome in geriatric inpatients. METHODS: A monocentric, prospective controlled trial was undertaken at the geriatric wards of a large university hospital. Pharmacists applied the RASP list to the drugs reconciled on admission and additionally performed an expert-based medication review, upon which recommendations were provided to the treating physicians. The primary outcome was the composite endpoint of drug discontinuation and dose reduction of drugs taken on admission. Secondary outcomes included RASP-identified potentially inappropriate medications (PIMs), the number of Emergency Department (ED) visits and quality of life (QOL) registered up to 3 months after discharge. RESULTS: On average, patients (n = 172) took 10 drugs on admission and were 84.5 years (standard deviation 4.8) of age. More drugs were discontinued or reduced in dose in the intervention group {control vs.intervention:median (interquartile range [IQR]) 3 (2-5) vs. 5 (3-7); p < 0.001}. More PIMs were discontinued in the intervention group, leading to less PIM at discharge [control vs.intervention:median (IQR) 2 (1-3) vs. 0.5 (0-1); p < 0.001]. No signal of harm was seen, and a significant improvement of QOL and less ED visits without hospitalization were observed. CONCLUSIONS: The combined intervention safely reduced drug use in very old inpatients and outperformed usual geriatric care. An increased QOL was seen, as well as a trend towards less ED visits. ClinicalTrials.gov Identifier: NCT01513265.

A venlafaxine and mirtazapine-induced serotonin syndrome confirmed by de- and re-challenge.

CASE DESCRIPTION: A 85 year old woman with a history of severe depression treated with mirtazapine and venlafaxine was admitted to the hospital twice after progressive deterioration of her general condition evolving to unconsciousness. Clinicians diagnosed a metabolic encephalopathy caused by a urinary tract infection which was treated appropriately. Although mirtazapine was stopped during the first hospitalization, the patient's general practitioner restarted mirtazapine four days before readmission. During rehospitalization, she developed extreme restlessness, hyperreflexia and an increased tone in the lower limbs. She was hypertensive and tachycardic. Excessive sweating, elevated creatine kinase levels and bilateral mydriasis were noticed. Urinary analysis showed positive levels of mirtazapine and venlafaxine and both drugs were withdrawn. Symptoms resolved within 48 h after discontinuation of her antidepressants. Conclusion To our knowledge, this is the first case of the serotonin syndrome confirmed by a positive challenge, de-challenge and re-challenge.