Conventional hemodynamic resuscitation may fail to optimize tissue perfusion: An observational study on the effects of dobutamine, enoximone, and norepinephrine in patients with acute myocardial infarction complicated by cardiogenic shock

Aim: To investigate the effects of inotropic agents on parameters of tissue perfusion in patients with cardiogenic shock. Methods and Results: Thirty patients with cardiogenic shock were included. Patients received dobutamine, enoximone, or norepinephrine. We performed hemodynamic measurements at baseline and after titration of the inotropic agent until cardiac index (CI) ≥2.5 L.min-1.m-2 or mixed-venous oxygen saturation (SvO 2) ≥70% (dobutamine or enoximone), and mean arterial pressure (MAP) ≥70 mmHg (norepinephrine). As parameters of tissue perfusion, we measured central-peripheral temperature gradient (delta-T) and sublingual perfused capillary density (PCD). All patients reached predefined therapeutic targets. The inotropes did not significantly change delta-T. Dobutamine did not change PCD. Enoximone increased PCD (9.1 [8.9-10.2] vs. 11.4 [8.4-13.9] mm.mm-2; p10.3 mm.mm-2; mortality 72% vs. 17%, p = 0.003). Conclusion: This study demonstrates the effects of commonly used inotropic agents on parameters of tissue perfusion in patients with cardiogenic shock. Despite hemodynamic optimization, tissue perfusion was not sufficiently restored in most patients. In these patients, mortality was high. Interventions directed at improving microcirculation may eventually help bridging the gap between improved hemodynamics and dismal patient outcome in cardiogenic shock

Clinically relevant potential drug-drug interactions in intensive care patients: A large retrospective observational multicenter study

Purpose: Potential drug-drug interactions (pDDIs) may harm patients admitted to the Intensive Care Unit (ICU). Due to the patient's critical condition and continuous monitoring on the ICU, not all pDDIs are clinically relevant. Clinical decision support systems (CDSSs) warning for irrelevant pDDIs could result in alert fatigue and overlooking important signals. Therefore, our aim was to describe the frequency of clinically relevant pDDIs (crpDDIs) to enable tailoring of CDSSs to the ICU setting. Materials & methods: In this multicenter retrospective observational study, we used medication administration data to identify pDDIs in ICU admissions from 13 ICUs. Clinical relevance was based on a Delphi study in which intensivists and hospital pharmacists assessed the clinical relevance of pDDIs for the ICU setting. Results: The mean number of pDDIs per 1000 medication administrations was 70.1, dropping to 31.0 when considering only crpDDIs. Of 103,871 ICU patients, 38% was exposed to a crpDDI. The most frequently occurring crpDDIs involve QT-prolonging agents, digoxin, or NSAIDs. Conclusions: Considering clinical relevance of pDDIs in the ICU setting is important, as only half of the detected pDDIs were crpDDIs. Therefore, tailoring CDSSs to the ICU may reduce alert fatigue and improve medication safety in ICU patients

The impact of critical illness on perceived health-related quality of life during ICU treatment, hospital stay, and after hospital discharge: A long-term follow-up study

Background: The time course of changes in health-related quality of life (HRQOL) following discharge from the ICU and during a general ward stay has not been studied. We therefore studied the immediate impact of critical illness on HRQOL and its recovery over time. Methods: In a prospective study, all patients admitted to the ICU for > 48 h who ultimately survived to follow-up at 6 months were included. The Medical Outcomes Study 36-item short form was used to measure HRQOL before ICU admission, at discharge from the ICU and hospital, and at 3 and 6 months following discharge from the ICU and hospital. An age-matched healthy Dutch population was used as a reference. Results: Of the 451 included patients, 252 could be evaluated at 6 months (40 were lost to follow-up, and 159 died). Pre-ICU admission HRQOL in survivors was significantly worse compared to the healthy population. Patients who died between ICU admission and long-term follow-up had significantly worse HRQOL in all dimensions already at ICU admission when compared to the long-term survivors. HRQOL decreased in all dimensions (p < 0.001) during ICU stay followed by a rapid improvement during hospital stay, gradually improving to near pre-ICU admission HRQOL at 6 months following ICU discharge. Physical functioning (PF), general health (GH), and social functioning (SF) remained significantly lower than pre-ICU admission values. Compared to the healthy Dutch population, ICU survivors had significantly lower HRQOL 6 months following ICU discharge (except for the bodily pain score). Conclusions: A sharp multidimensional decline in HRQOL occurs during ICU admission where recovery already starts following ICU discharge to the general ward. Recovery is incomplete for PF, GH, and SF when compared to baseline values and the healthy population