Reliability of a questionnaire for pharmacological treatment appropriateness in patients with multiple chronic conditions

Validation of the LESS-CHRON criteria: reliability study of a tool for deprescribing in patients with multimorbidity

Objective

The 'LESS-CHRON criteria' (List of Evidence-Based Deprescribing for Chronic Patients criteria) is a newly created tool with 27 criteria to guide deprescribing. It was developed using a Delphi methodology. Each criterion consists of drugs and their indications, conditions under which deprescribing would be considered, a health variable to be monitored after deprescribing and a follow-up period. The aim of our study was to evaluate the reliability of the LESS-CHRON criteria in a population of patients with multimorbidity to determine the possible usefulness of this tool in clinical practice.

Methods

We selected chronic patients with multimorbidity from an internal medicine unit who were older than 80 years old and were alive at the time of the study. To determine interobserver reliability, each professional (internist or hospital pharmacy specialist) applied the questionnaire under the same conditions and with the same resources. To determine intraobserver reliability, each health professional applied the tool at baseline and 2 months later. We measured interobserver and intraobserver reliability using the kappa coefficient. The proportion of overall agreement was also determined.

Results

We obtained a moderate overall kappa (ĸ=0.46, 95% CI 0.36 to 0.55) for interobserver reliability, and good (ĸ=0.65, 95% CI 0.57 to 0.78) and moderate (ĸ=0.59, 95% CI 0.49 to 0.74) values for intraobserver reliability for the internist and pharmacist, respectively. The proportion of overall agreement was very high: 92% (range: 62%-100%) for the interobserver, and 94% (80%-100%) and 93% (63%-100%) for the internist and pharmacist, respectively.

Conclusions

The LESS-CHRON criteria shows early promise as a reliable method to help guide deprescribing in patients with multimorbidity. Further, more complete testing with a larger sample of prescribers is needed.

A multidisciplinary approach for patients with multiple chronic conditions: IMPACTO study

BACKGROUND AND OBJECTIVE

The objective of the study was to evaluate the effects of a multidisciplinary intervention on the outcomes of polypathological patients (PP).

METHODS

A multicenter quasi-experimental pre-post study with a 12-month follow up was performed. In-hospital, at discharge and outpatient clinics patients who met criteria of PP between March 2012 and October 2013 were included. The multidisciplinary approach was defined by 11 interventions performed by general practitioners, internal medicine physicians, team care nurses and hospital pharmacists. The primary outcome was reduction in the number of hospital admissions and days of hospitalization. Secondary outcomes included mortality and the effects of 11 interventions on mortality.

RESULTS

420 patients were included. Mean patient age was 77.3 (SD: 8.90) and average number of PP defining categories was 2.99 (SD: 1.00). Number of hospital admissions and days of hospitalization decreased significantly after intervention: 1.52 (SD: 1.35) versus 0.82 (SD: 1.29), p<0.001, and 13.77 (SD: 15.20) versus 7.21 (SD: 12.90), p<0.001 respectively. 12-month mortality was 37.7%. PP who failed to receive a structured medical visit from the internal medicine physician and educational workshops from the team care nurses had a higher risk of exitus in the next 12 months, HR: 1.68; 95% CI: 1.15-2.46, p=0.007 and HR: 2.86; 95% CI: 1.92-4.27, p<0.001, respectively.

CONCLUSIONS

This multidisciplinary intervention reduced the risk of PP hospital admission and days of hospitalization. Educational workshop programs for PP and their caregivers and structured IM medical visits were associated with improvements of survival.

Excessive polypharmacy and survival in polypathological patients

PURPOSE

The purpose of this study was to determine whether excessive polypharmacy is associated with a higher survival rate in polypathological patients.

PATIENTS AND METHODS

An observational, prospective, and multicenter study was carried out on those polypathological patients admitted to the internal medicine and acute geriatrics departments between March 1 and June 30, 2011. For each patient, data concerning age, sex, comorbidity, Barthel and Lawton-Brody indexes, Pfeiffer's questionnaire, socio-familial Gijon scale, delirium, number of drugs, and number of admissions during the previous year were gathered, and the PROFUND index was calculated. Polypharmacy was defined as the use of ≥ 5 drugs and excessive polypharmacy as the use of ≥ 10. A 1-year long follow-up was carried out. A logistic regression model was performed to analyze the association of variables with excessive polypharmacy and a Cox proportional hazard model to determine the association between polypharmacy and survival.

RESULTS

We included 457 polypathological patients. Mean age was 81.0 (8.8) years and 54.5% were women. The mean number of drugs used was 8.2 (3.4). Excessive polypharmacy was directly associated with heart disease [hazard ratio (HR) 2.33 95% CI 1.40-3.87; p =0.001], respiratory disease [HR 1.87 95% CI 1.13-3.09; p = 0.01], peripheral artery disease/diabetes with retinopathy and/or neuropathy [HR 2.02 95% CI 1.17-3.50; p = 0.01], and the number of admissions during the previous year [HR 1.21 96%CI 1.01-1.44; p = 0.04]. It was inversely associated with delirium [HR 0.48 95% CI 0.25-0.91; p = 0.02]. There were no statistical differences regarding the probability of 1-year survival between patients with no polypharmacy, with simple polypharmacy, and with excessive polypharmacy (0.66, 0.60, and 0.57, respectively, p = 0.12).

CONCLUSIONS

A greater use of drugs may not be harmful but is also not associated with a higher probability of survival in polypathological patients.