[Long-term therapy with propofol has no impact on microcirculation in medical intensive care patients]
Christian Jung1, Christoph Rödiger, Alexander Lauten
1Klinik für Innere Medizin I (Kardiologie, Angiologie, Pneumologie und Intensivmedizin), Universitätsklinik der Friedrich-Schiller-Universität Jena, Erlanger Allee 101, 07747, Jena, Germany. christian.jung@med.uni-jena.de
Background:
Microcirculation has become a major focus of research in critical care medicine due to its growing clinical relevance detecting changes in organ perfusion at an early stage. A negative impact of propofol infusion on microcirculation during short-term anesthesia was described recently. The influence of long-term sedation with propofol on microflow of critical care patients is still unclear.
Patients And Methods:
Microflow was analyzed using sidestream darkfield microscopy of sublingual mucosa in 28 patients of whom eleven received continuous infusion of propofol. According to current guidelines, microflow was recorded digitally. Quantitative analysis was performed offline in a semiquantitative way (0: no flow; 1: intermittent flow; 2: sluggish flow; 3: continuous flow).
Results:
Good microflow rates were detected in sublingual vessels (10-100 microm) in hemodynamically stable, medical intensive care patients. In the majority of cases, continuous flow profiles were recorded. There was no difference in flow rates between patients with and without propofol therapy.
Conclusion:
In hemodynamically stable intensive care patients, long-term therapy with propofol did not affect sublingual microflow in this small cohort. However, intensive care physicians should keep such possible interactions in mind avoiding administration of these substances in patients with manifested shock. The effects of propofol in hemodynamically impaired patients should be evaluated in further studies.
Insights
Long-term propofol sedation did not impact microcirculation in stable intensive care patients. Further studies are needed to evaluate effects in hemodynamically impaired patients and potential interactions in shock.
Area of Science:
- Critical care medicine
- Hemodynamics
- Microcirculation research
Background:
- Microcirculation monitoring is crucial for early detection of organ perfusion changes in critical care.
- Recent studies suggest short-term propofol anesthesia may negatively affect microcirculation.
- The impact of long-term propofol sedation on microflow in intensive care patients remains unclear.
Purpose of the Study:
- To investigate the influence of long-term propofol sedation on sublingual microcirculation in critical care patients.
- To determine if continuous propofol infusion affects microflow parameters in hemodynamically stable patients.
Main Methods:
- Sublingual microcirculation was assessed using sidestream darkfield microscopy in 28 intensive care patients.
- Microflow was digitally recorded and semiquantitatively analyzed (0-3 scale).
- Eleven patients received continuous propofol infusion; flow rates were compared between groups.
Main Results:
- Hemodynamically stable intensive care patients generally exhibited good microflow rates with continuous flow profiles.
- No significant difference in sublingual microflow was observed between patients receiving propofol and those who did not.
- The study included a small cohort, with 11 patients on continuous propofol infusion.
Conclusions:
- Long-term propofol therapy did not appear to affect sublingual microflow in this cohort of hemodynamically stable intensive care patients.
- Clinicians should remain aware of potential propofol interactions, especially in patients with shock.
- Further research is recommended to explore propofol's effects in hemodynamically compromised patients.
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