Journal of anesthesia
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Journal of anesthesia · Oct 2011
Backboard insertion in the operating table increases chest compression depth: a manikin study.
The quality of chest compression (CC) is influenced by the surface supporting the patient. The present study compared chest compression depth with and without a rigid backboard on an operating table with a pressure-distributing mattress. We hypothesized that the presence of a backboard would result in an increased depth of chest compression on the operating table with a pressure-distributing mattress. ⋯ Mean chest compression depth increased from 4.9 ± 0.4 to 5.4 ± 0.3 mm (P < 0.0001) when a backboard was present. Mean proportion of compressions >50 mm increased significantly with the presence of a backboard (53.6% ± 32.3%-81.8% ± 15.0%, P < 0.0001). Applying a backboard significantly increased CC depth during cardiopulmonary resuscitation of a manikin model on an operating table with a pressure-distributing mattress.
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Journal of anesthesia · Oct 2011
Randomized Controlled TrialFlurbiprofen axetil enhances analgesic effect of fentanyl associated with increase in β-endorphin levels.
To examine the analgesic effect of preoperative administration of flurbiprofen axetil and that of postoperative administration of a combination of flurbiprofen axetil and fentanyl, as well as perioperative plasma β-endorphin (β-EP) levels in patients undergoing esophagectomy. ⋯ These results show that flurbiprofen axetil enhances the analgesic effect of fentanyl associated with increase in β-EP levels.
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Journal of anesthesia · Oct 2011
Influence of tidal volume for stroke volume variation to predict fluid responsiveness in patients undergoing one-lung ventilation.
We designed this study to determine the predictive value for fluid responsiveness of stroke volume variation (SVV) in patients undergoing one-lung ventilation (OLV), ventilated at different tidal volumes. All patients scheduled for pulmonary lobectomy were randomized into two groups according to their tidal volume [group H: tidal volume 8 ml/kg (n = 36); group L: tidal volume 6 ml/kg (n = 37)]. After starting OLV, volume loading was performed by administration of 500 ml 6% hydroxyethylated starch for 30 min. ⋯ The area under the receiver operating characteristic curve for SVV to discriminate between responders and non-responders was 0.776 in group H and 0.648 in group L. The optimal threshold value of SVV was 10.5% (sensitivity, 85.7%; specificity, 66.7%) in group H and 8% (sensitivity, 69.5%; specificity, 64.3%) in group L. We found that SVV could predict fluid responsiveness in patients undergoing OLV with acceptable levels of sensitivity and specificity only when tidal volume is at least 8 ml/kg.
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Journal of anesthesia · Oct 2011
Fiberoptic-guided tracheal tube placement through the air-Q® Intubating Laryngeal Airway: a performance study in a manikin.
This study characterizes the performance and success rate for fiberoptic-guided tracheal tube placement through the air-Q(®) Intubating Laryngeal Airway (air-Q). ⋯ Fiberoptic-guided tracheal tube placement through the air-Q can be performed in a clinically acceptable period of time with high success by operators skilled in fiberoptic-guided intubation. Tracheal tube dislodgement during air-Q removal remains a potential risk that should be emphasized.