British journal of anaesthesia
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Review Meta Analysis
Incidence of postoperative death and acute kidney injury associated with i.v. 6% hydroxyethyl starch use: systematic review and meta-analysis.
Use of 6% HES solutions in surgical patients is not associated with either harm or benefit in terms of mortality, renal replacement or kidney injury.
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Comparative Study
Enhanced antinociceptive efficacy of epidural compared with i.v. methadone in a rat model of thermal nociception.
The properties of methadone suggest a potential advantage for epidural over i.v. administration for pain relief, but little supportive evidence exists. ⋯ Epidural administration of methadone in rats resulted in systemic exposure similar to that after i.v. administration, but improved thermal antinociceptive efficacy, and reduced supraspinal undesired effects. The findings suggest the presence of local effect at the spinal cord level, in addition to the systemic effect produced by epidural methadone.
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Superimposed high-frequency jet ventilation (SHFJV) has proved to be safe and effective in clinical practice. However, it is unclear which frequency range optimizes ventilation and gas exchange. The aim of this study was to systematically compare high-frequency jet ventilation (HFJV) with HFJV by assessing chest wall volume variations (ΔEEV(CW)) and gas exchange in relation to variable high frequency. ⋯ In a porcine model, SHFJV was more effective in increasing end-expiratory volume than single-frequency HFJV, but both modes may provide adequate ventilation in the absence of airway obstruction and respiratory disease, except for HFJV at frequencies ≥300 min(-1).