Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Nov 2017
Comparative StudyEnd-tidal control vs. manually controlled minimal-flow anesthesia: a prospective comparative trial.
To ensure safe general anesthesia, manually controlled anesthesia requires constant monitoring and numerous manual adjustments of the gas dosage, especially for low- and minimal-flow anesthesia. Oxygen flow-rate and administration of volatile anesthetics can also be controlled automatically by anesthesia machines using the end-tidal control technique, which ensures constant end-tidal concentrations of oxygen and anesthetic gas via feedback and continuous adjustment mechanisms. We investigated the hypothesis that end-tidal control is superior to manually controlled minimal-flow anesthesia (0.5 l/min). ⋯ End-tidal control is a superior technique for setting and maintaining oxygen and anesthetic gas concentrations in a stable and rapid manner compared with manual control. Consequently, end-tidal control can effectively support the anesthetist.
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Acta Anaesthesiol Scand · Nov 2017
Randomized Controlled TrialUltrasound-guided regional blockade for lipoma excision: a new approach to an old technique.
Local anesthesia for lipoma excision can be feasible with anesthetic injection in the fascial plane between the lipoma and the surrounding soft tissues under real-time ultrasonography [ultrasound- guided lipoma plane (ULP) block]. The advantage of targeting a single anesthetic injection plane under ultrasound guidance may allow for technically easier block placement and long-term analgesic effects. ⋯ Ultrasound-guided lipoma plane blockade reduces the number of needle passes required to complete the block and provides less procedure pain and longer pain relief compared with the traditional block in patients undergoing lipoma excision.
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Acta Anaesthesiol Scand · Nov 2017
Validation of subjective rating scales for assessment of surgical workspace during laparoscopy.
Recently, studies have focused on how to optimize laparoscopic surgical workspace by changes in intra-abdominal pressure, level of muscle relaxation or body position, typically evaluated by surgeons using subjective rating scales. We aimed to validate two rating scales by having surgeons assess surgical workspace in video sequences recorded during laparoscopic surgery. ⋯ In conclusion, both scales showed excellent intra-rater and fair inter-rater reliability for assessing surgical workspace in laparoscopy. The 5-point surgical rating scale had all categories employed by all surgeons.