A prospective study on the user-friendliness of four anaesthesia workstations.

BACKGROUND AND OBJECTIVES: Unlike for intensive care unit and home mechanical ventilators, no study has evaluated the user-friendliness of the recently introduced new anaesthesia workstations. METHODS: We performed a prospective study to evaluate the user-friendliness of four anaesthesia workstations, which were categorized into two groups: first-generation (Kion) and second-generation (Avance, Felix and Primus). Twenty users (12 nurse-anaesthetists and 8 anaesthesiologists) from three different anaesthesia departments at the same univeristy hospital participated in the study. The user-friendliness scale evaluated 10 criteria, including two design and monitoring criteria, four maintenance criteria and four ventilation use criteria. Each criterion was evaluated from 0 (poor) to 10 (excellent). RESULTS: The mean score obtained for the first-generation workstation was lower than those obtained for the three second-generation workstations (P < 0.05). No significant differences in the overall user-friendliness score was observed for the three second-generation workstations. The first-generation workstation obtained a significantly lower score than the three second-generation workstations for the design criteria (P < 0.01). For the screen criteria, the highest score was obtained by Felix, which has the largest screen and associated characters. For the main maintenance criteria, Kion and Felix obtained the lowest scores. No significant differences between the four anaesthesia workstations were found for only three of the user-friendliness criteria (self-test, alarms and settings). CONCLUSIONS: Anaesthesia machines have benefited from considerable advances in design and technology. This novel user-friendliness scale revealed that the most recent workstations were more appreciated by users than the first-generation of anaesthesia workstations. This user-friendliness scale may help the anaesthetic staff to 'consensually' choose the future workstation for their anaesthesia department.

[Phoning study about postoperative practice and application of non-invasive ventilation]. / Enquête téléphonique sur la pratique postopératoire de la ventilation non invasive et ses modalités d'application.

OBJECTIVES: Incidence and management of positive pressure non-invasive ventilation (NIV) in intensive care unit (ICU) in the postoperative period. STUDY DESIGN: Phoning study performed on September 2001 in 60 ICU of south of France (public: 47, private: 13, medical: 11, surgical: 20, medical-surgical: 29), which were randomized from a national list. RESULTS: NIV was used currently on 55% and casually on 35% of the units. Ten percent of ICU, which never use NIV, were surgical on 83% with a lower number of bed (7 +/- 3 vs. 12 +/- 5). The most often humidification device used was a Heat and Moisture Exchanger (HME) (52%), a Heated Humidifier (HH) (26%), either (4%) and none device (19%). ICU that never used a humidification device used a home ventilator in 30%. Ventilators used were more often heavy ICU ventilators (80%) with a facial mask (89%). NIV was performed exclusively by physicians in 15% of cases and in collaboration after the first application in 71% of cases. Sixty-nine % of intensivists used NIV as a first choice for the treatment of acute postoperative respiratory failure and 54% of intensivists for the treatment of postoperative atelectasis. CONCLUSION: Use of NIV increases in ICU, particularly in surgical units. Practices are different between ICU. An HME is the most frequently humidification device used.

[Causes of early mortality after liver transplantation: a twenty-years single centre experience]. / Mortalité trois mois après transplantation hépatique : étude monocentrique sur une période de vingt ans.

OBJECTIVE: To define the causes of mortality of patients who died within the first three months after a liver transplantation. TYPE OF STUDY: Retrospective, observational, and single centre study. PATIENTS AND METHODS: Between March 1989 and July 2010, all patients who died within three months after a liver transplantation were included. Demographic characteristics, preoperative and peroperative data, donor characteristics, postoperative complications and causes of mortality were collected. RESULTS: Among the 788 performed liver transplantations, 76 patients died in intensive care unit (11%). The main indications of liver transplantation were alcoholic cirrhosis (30%), hepatitis C (28%), hepatocarcinoma (15%), primitive or secondary biliary cirrhosis (10%). Fifty percent of the patients were categorized as Child C. The main causes of death were non-function or dysfunction with retransplantation contra-indication graft (18%), sepsis (18%), neurological complications (12%), hemorrhagic shock (13%), (9%), multiorgan failures (5%), cardiac complications (6%). CONCLUSION: In this study, the main causes of mortality were infectious, neurological and hemorrhagic. These results emphasize the necessity for better control of sepsis, haemorrhage and immunosupressors.

Patient-controlled epidural analgesia after abdominal surgery: ropivacaine versus bupivacaine.

UNLABELLED: In this randomized, double-blinded study we sought to assess the analgesic efficacy of ropivacaine and bupivacaine in combination with sufentanil and the efficacy of ropivacaine alone after major abdominal surgery. Sixty patients undergoing major abdominal surgery received standardized general anesthesia combined with epidural thoracic analgesia. They were allocated to one of three groups: the BS group received postoperative patient-controlled epidural analgesia with 0.125% bupivacaine plus 0.5 microg/mL sufentanil; the RS group received 0.125% ropivacaine plus 0.5 microg/mL sufentanil; and the R group received 0.2% ropivacaine, with the patient-controlled epidural analgesia device set at bolus 2-3 mL and background infusion 3-5 mL/h. Visual analog scale scores were significantly lower during coughing in the BS group compared with the RS and R groups and in the RS group compared with the R group. The BS group required significantly less local anesthetic (milligrams per day) during the first three postoperative days compared with the RS and R groups, and the RS group, significantly less than the R group. No major side effects were noted in any group. We conclude that, after major abdominal surgery, thoracic epidural analgesia was more effective with bupivacaine than with ropivacaine when these two local anesthetics are used in a mixture with sufentanil. Ropivacaine alone was less effective than ropivacaine in combination with sufentanil. IMPLICATIONS: After major abdominal surgery, thoracic epidural analgesia was more effective with 0.125% bupivacaine than with 0.125% ropivacaine when these two local anesthetics were used in a mixture with 0.5 microg/mL sufentanil. Ropivacaine 0.2% alone was less effective than 0.125% ropivacaine combined with sufentanil.