The Use of a Droplet Collar Accessory Attached to a Portable near Infrared Instrument to Identify Methanol Contamination in Whisky.

The aim of this study was to evaluate the ability of a droplet collar accessory attached to a portable near-infrared (NIR) instrument to characterize the artificial contamination of methanol in commercial whisky samples. Unadulterated samples (n = 12) were purchased from local bottle shops where adulterated samples were created by adding methanol (99% pure methanol) at six levels (0.5%, 1%, 2%, 3%, 4% and 5% v/v) to the commercial whisky samples (controls). Samples were analyzed using a drop collar accessory attached to a MicroNIR Onsite instrument (900-1650 nm). Partial least squares (PLS) cross-validation statistics obtained for the prediction of all levels of methanol (from 0 to 5%) addition were considered adequate when the whole adulteration range was used, coefficient of determination in cross-validation (R2cv: 0.95) and standard error in cross of validation (SECV: 0.35% v/v). The cross-validation statistics were R2cv: 0.97, SECV: 0.28% v/v after the 0.5% and 1% v/v methanol addition was removed. These results showed the ability of using a new sample presentation attachment to a portable NIR instrument to analyze the adulteration of whisky with methanol. However, the low levels of methanol adulteration (0.5 and 1%) were not well predicted using the NIR method evaluated.

Evaluation of an Intervention With Nurses for Delirium Detection After Cardiac Surgery.

BACKGROUND: Completion of a delirium detection tool allows rapid management, which alleviates complications. However, these tools are often underused. AIMS: To assess the effect of a knowledge transfer (KT) intervention on the completion of a delirium detection tool by nurses working with cardiac surgery patients. Secondary aims included describing completion rates per work shift, and patient characteristics associated with higher rates. METHODS: In a pre-post study, the intervention included a survey and focus groups to identify barriers to use of a delirium detection tool (Intensive Care Delirium Screening Checklist [ICDSC]). Nurses' suggestions for a KT activity and its implementation were also included. Using chi-square analysis and medical charts from 242 patients, we compared the pre- and postintervention rates of completion of the ICDSC. RESULTS: The majority of nurses who completed the survey (n = 30) felt they had the knowledge, skills, and intention to complete the ICDSC. During the focus groups (n = 4), a need for information on delirium symptoms and its management was raised as a barrier. This barrier was addressed with the selected KT activity (clinical capsule and aide-memoire handed out to nurses [n = 24]). Across all work shifts, the completion rate was similar pre- and postintervention. Overall, the completion rate was lower during the day shift than the night and evening shifts. A higher rate was associated with the first three postoperative days, and longer hospital and intensive care unit stays. LINKING EVIDENCE TO ACTION: A tailored intervention based on preidentified barriers and facilitators, using the Determinants of Implementation Behavior Questionnaire, and in collaboration with participants, has the potential to promote evidence-based practice.