Sedation and analgesia are important aspects of patient care on the intensive care unit (ICU), yet relatively little information is available on common sedative and analgesic practice. We sought to assess international differences in the prescription of sedative and analgesic drugs in western European ICUs by means of a short, self-administered questionnaire. Six hundred and forty-seven intensive care physicians from 16 western European countries replied to the questionnaire. Midazolam was used as a sedative often or always by 63% of respondents and propofol by 35%. There were considerable international variations, with midazolam being preferred over propofol in France, Germany, the Netherlands, Norway and Austria. For analgesia, the drugs most commonly used were morphine (33%), fentanyl (33%) and sufentanil (24%). Morphine was preferred over fentanyl and sufentanil in Norway, UK and Ireland, Sweden, Switzerland, the Netherlands, and Spain and Portugal. Fentanyl was preferred in France, Germany and Italy. Sufentanil was preferred in Belgium and Luxemburg and in Austria. Multivariate analysis showed that the combination of midazolam with fentanyl was most often used in France; propofol with morphine in Sweden, the UK and Ireland, and Switzerland; midazolam with morphine in Norway; and propofol with sufentanil in Belgium and Luxemburg, Germany and Italy. The use of a sedation scale varied from 72% in the UK and Ireland to 18% in Austria. When used, the most common sedation scale was the Ramsay scale. This study demonstrates substantial international differences in sedative and analgesic practices in western European ICUs.
Development of ionized hypomagnesemia during an ICU stay is associated with a worse prognosis. It is often associated with the use of diuretics and the development of sepsis. Monitoring of ionized magnesium levels may have prognostic, and perhaps therapeutic, implications.
Our study documents a direct relationship between the serum lactate level on ICU admission and not only the risk of death in ICU but also the length of ICU stay. Hyperlactataemic survivors have a longer LOS and non-survivors a shorter LOS than normal lactate survivors and non-survivors, respectively.
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