Video-based teleconsultations in pharmaceutical care – A systematic review

BackgroundIn recent years, telemedicine has gained increasing importance in the delivery of pharmaceutical care. The use of video technologies for remote communication between different parties offers the potential to meet the future challenges which arise from the increase in elderly and chronically ill patients. However, the influence of these technologies on patient-related outcomes in pharmaceutical care is not yet sufficiently known.MethodIn December 2018 a systematic literature search was conducted in the databases Medline, Cochrane Library and PubPharm. Randomized controlled trials were considered, which investigate real-time video conferencing between pharmacists on the one hand and patients or other healthcare providers on the other hand. The influence on patient related outcomes compared to standard care was assessed. The bias potential was evaluated using the Cochrane Risk-of-Bias instrument. A total of 4 randomized controlled trials could be included.ResultsThe studies describe partly complex intervention settings with adults and adolescents suffering from asthma, chronic renal failure, HIV infection, hyperlipidemia, hypertension and/or diabetes. None of the studies considers the interprofessional communication of pharmacists with other service providers. No influence on clinical or psychological endpoints was found. In some cases, an increase in adherence and correct medication use is evident. Healthcare utilization is not influenced. In all studies there is an increased risk of systematic bias.DiscussionTeleconsultations with pharmacists can rather be used to ensure the general provision of pharmaceutical care than to improve patient-related outcomes. Further studies are necessary to fully depict the influence of telemedical interventions in pharmaceutical care.     

A comparison of volume clamp method-based continuous noninvasive cardiac output (CNCO) measurement versus intermittent pulmonary artery thermodilution in postoperative cardiothoracic surgery patients

The CNAP technology (CNSystems Medizintechnik AG, Graz, Austria) allows continuous noninvasive arterial pressure waveform recording based on the volume clamp method and estimation of cardiac output (CO) by pulse contour analysis. We compared CNAP-derived CO measurements (CNCO) with intermittent invasive CO measurements (pulmonary artery catheter; PAC-CO) in postoperative cardiothoracic surgery patients. In 51 intensive care unit patients after cardiothoracic surgery, we measured PAC-CO (criterion standard) and CNCO at three different time points. We conducted two separate comparative analyses: (1) CNCO auto-calibrated to biometric patient data (CNCO_bio) versus PAC-CO and (2) CNCO calibrated to the first simultaneously measured PAC-CO value (CNCO_cal) versus PAC-CO. The agreement between the two methods was statistically assessed by Bland–Altman analysis and the percentage error. In a subgroup of patients, a passive leg raising maneuver was performed for clinical indications and we present the changes in PAC-CO and CNCO in four-quadrant plots (exclusion zone 0.5 L/min) in order to evaluate the trending ability of CNCO. The mean difference between CNCO_bio and PAC-CO was +0.5 L/min (standard deviation?±?1.3 L/min; 95% limits of agreement ?1.9 to +3.0 L/min). The percentage error was 49%. The concordance rate was 100%. For CNCOcal, the mean difference was ?0.3 L/min (±0.5 L/min; ?1.2 to +0.7 L/min) with a percentage error of 19%. In this clinical study in cardiothoracic surgery patients, CNCO_cal showed good agreement when compared with PAC-CO. For CNCO_bio, we observed a higher percentage error and good trending ability (concordance rate 100%).