Sedación paliativa con propofol en una unidad de cuidados paliativos de un hospital de tercer nivel

Abstract

Background and Objectives: The more patients cared for in palliative care, the more complicated situations arise - for example, palliative sedation due to a refractory symptom. Many factors may complicate a difficult sedation because of drug tolerance or interactions and psychological assessment. Resistance to usual sedative medications is frequent in these situations, and other pharmaceuticals like propofol, with limited use in a palliative care unit (PCU), are needed. The main objectives of this study were to research the available literature, and to report various PCU cases in a tertiary hospital where palliative sedation with propofol was needed. Material and methods: A descriptive and retrospective study was performed during 10 months. Sedated patients with propofol were included. Also, two patients who died when induction doses of propofol were administered. Many variables were recorded. The clinical records of patients were also reviewed to elucidate the reason why propofol sedation was needed. Results: Few studies exist examining the use of propofol in palliative care based on case reports or small series of cases. Four patients required sedation with propofol. These patients were younger (average age, 55.5, p = 0.01) and had a longer time between sedation onset and death (average time, 7.5 days, p = 0.05). The main symptoms motivating sedation were multifactorial and emotional suffering. All patients receiving propofol needed high-dose maintenance sedation with other sedative medications, and had responded minimally or not at all to rescue doses in previous hours. Updated guidelines for propofol use in PCUs have been drafted, with recommendations and dosages in case of complicated sedation. Conclusions: - Propofol use is limited in palliative care, usually with good results. Patients where propofol was needed were younger and sedation was longer. There was high emotional suffering in these patients. - There are factors responsible for complicated sedation or limited response to midazolam. Knowledge of these factors might help in providing earlier, more effective sedation. - Guidelines for propofol use in the PCU setting are proposed, recommending low maintenance doses initially. - A more widespread use of propofol as sedative medication in PCUs is recommended when complicated sedation occurs. - Further studies are needed to clarify many aspects of propofol use.