Novel Foraminal Expansion Technique

The technique we describe was developed for cervical foraminal stenosis for cases in which a keyhole foraminotomy would not be effective. Many cervical stenosis cases are so severe that keyhole foraminotomy is not successful. However, the technique outlined in this study provides adequate enlargement of an entire cervical foraminal diameter. This study reports on a novel foraminal expansion technique. Linear drilling was performed in the middle of the facet joint. A small bone graft was placed between the divided lateral masses after distraction. A lateral mass stabilization was performed with screws and rods following the expansion procedure. A cervical foramen was linearly drilled medially to laterally, then expanded with small bone grafts, and a lateral mass instrumentation was added with surgery. The patient was well after the surgery. The novel foraminal expansion is an effective surgical method for severe foraminal stenosis

Sex difference and intra-operative tidal volume: Insights from the LAS VEGAS study

BACKGROUND: One key element of lung-protective ventilation is the use of a low tidal volume (VT). A sex difference in use of low tidal volume ventilation (LTVV) has been described in critically ill ICU patients.OBJECTIVES: The aim of this study was to determine whether a sex difference in use of LTVV also exists in operating room patients, and if present what factors drive this difference.DESIGN, PATIENTS AND SETTING: This is a posthoc analysis of LAS VEGAS, a 1-week worldwide observational study in adults requiring intra-operative ventilation during general anaesthesia for surgery in 146 hospitals in 29 countries.MAIN OUTCOME MEASURES: Women and men were compared with respect to use of LTVV, defined as VT of 8 ml kg-1 or less predicted bodyweight (PBW). A VT was deemed 'default' if the set VT was a round number. A mediation analysis assessed which factors may explain the sex difference in use of LTVV during intra-operative ventilation.RESULTS: This analysis includes 9864 patients, of whom 5425 (55%) were women. A default VT was often set, both in women and men; mode VT was 500 ml. Median [IQR] VT was higher in women than in men (8.6 [7.7 to 9.6] vs. 7.6 [6.8 to 8.4] ml kg-1 PBW, P < 0.001). Compared with men, women were twice as likely not to receive LTVV [68.8 vs. 36.0%; relative risk ratio 2.1 (95% CI 1.9 to 2.1), P < 0.001]. In the mediation analysis, patients' height and actual body weight (ABW) explained 81 and 18% of the sex difference in use of LTVV, respectively; it was not explained by the use of a default VT.CONCLUSION: In this worldwide cohort of patients receiving intra-operative ventilation during general anaesthesia for surgery, women received a higher VT than men during intra-operative ventilation. The risk for a female not to receive LTVV during surgery was double that of males. Height and ABW were the two mediators of the sex difference in use of LTVV.TRIAL REGISTRATION: The study was registered at Clinicaltrials.gov, NCT01601223

New concepts of the management of one-lung ventilation

Purpose of revie

Anaesthesia for thymectomy in adult and juvenile myasthenic patients

Purpose of reviewMyasthenia gravis, a chronic disease of the neuromuscular junction, is associated with an interaction with neuromuscular blocking agents (NMBAs). As thymectomy is often the method of choice for its treatment, anaesthetic management requires meticulous preoperative evaluation, careful monitoring, and adequate dose titration. The frequency of video-assisted thoracoscopic extended thymectomy (VATET) is also increasing, making the use of NMBA obligatory. The number of cases of the juvenile form has also increased over years; airway management in juvenile one-lung ventilation is another challenge.Recent findingsSugammadex appears to be a safe choice to avoid prolonged action of NMBA also in patients with myasthenia gravis, although this information has to be confirmed in further series. The number of VATETs is increasing so that the experience with sugammadex will also increase in time. In non-VATET operations, use of NMBA should and can be avoided as much as possible. New scoring systems are defined to predict a postoperative myasthenic crisis. For VATET in juvenile cases, blockers can be a good option for the airway management.SummaryAnaesthetic management of thymectomy in myasthenia gravis requires experience concerning different approaches. Sugammadex should be considered as a possible further step toward postoperative safety