Sue Kinn

BACKGROUND: Fasting before general anaesthesia aims to reduce the volume and acidity of stomach contents during surgery, thus reducing the risk of regurgitation/aspiration. Recent guidelines have recommended a shift in fasting policy from the standard 'nil by mouth from midnight' approach to more relaxed policies which permit a period of restricted fluid intake up to a few hours before surgery. The evidence underpinning these guidelines however, was scattered across a range of journals, in a variety of languages, used a variety of outcome measures and methodologies to evaluate fasting regimens that differed in duration and the type and volume of intake permitted during a restricted fasting period. Practice has been slow to change. OBJECTIVES: To systematically review the effect of different preoperative fasting regimens (duration, type and volume of permitted intake) on perioperative complications and patient wellbeing (including aspiration, regurgitation and related morbidity, thirst, hunger, pain, nausea, vomiting, anxiety) in different adult populations. SEARCH STRATEGY: Electronic databases, conference proceedings and reference lists from relevant articles were searched for studies of preoperative fasting in August 2003 and experts in the area were consulted. SELECTION CRITERIA: Randomised controlled trials which compared the effect on postoperative complications of different preoperative fasting regimens on adults were included. DATA COLLECTION AND ANALYSIS: Details of the eligible studies were independently extracted by two reviewers and where relevant information was unavailable from the text attempts were made to contact the authors. MAIN RESULTS: Thirty eight randomised controlled comparisons (made within 22 trials) were identified. Most were based on 'healthy' adult participants who were not considered to be at increased risk of regurgitation or aspiration during anaesthesia. Few trials reported the incidence of aspiration/regurgitation or related morbidity but relied on indirect measures of patient safety i.e. intra-operative gastric volume and pH. There was no evidence that the volume or pH of participants' gastric contents differed significantly depending on whether the groups were permitted a shortened preoperative fluid fast or continued a standard fast. Fluids evaluated included water, coffee, fruit juice, clear fluids and other drinks (e.g. isotonic drink, carbohydrate drink). Participants given a drink of water preoperatively were found to have a significantly lower volume of gastric contents than the groups that followed a standard fasting regimen. This difference was modest and clinically insignificant. There was no indication that the volume of fluid permitted during the preoperative period (i.e. low or high) resulted in a difference in outcomes from those participants that followed a standard fast. Few trials specifically investigated the preoperative fasting regimen for patient populations considered to be at increased risk during anaesthesia of regurgitation/aspiration and related morbidity. REVIEWER'S CONCLUSIONS: There was no evidence to suggest a shortened fluid fast results in an increased risk of aspiration, regurgitation or related morbidity compared with the standard 'nil by mouth from midnight' fasting policy. Permitting patients to drink water preoperatively resulted in significantly lower gastric volumes. Clinicians should be encouraged to appraise this evidence for themselves and when necessary adjust any remaining standard fasting policies (nil-by-mouth from midnight) for patients that are not considered 'at-risk' during anaesthesia.

BACKGROUND: Children, like adults, are required to fast before general anaesthesia with the aim of reducing the volume and acidity of their stomach contents. It is thought that fasting reduces the risk of regurgitation and aspiration of gastric contents during surgery. Recent developments have encouraged a shift from the standard 'nil-by-mouth-from-midnight' fasting policy to more relaxed regimens. Practice has been slow to change due to questions relating to the duration of a total fast, the type and amount of intake permitted. OBJECTIVES: To systematically assess the effects of different fasting regimens (duration, type and volume of permitted intake) and the impact on perioperative complications and patient well being (aspiration, regurgitation, related morbidity, thirst, hunger, pain, comfort, behaviour, nausea and vomiting) in children. SEARCH STRATEGY: We searched Cochrane Wounds Group Specialised Register (searched 25/6/09), the Cochrane Central Register of Controlled Trials (The Cochrane Library, Issue 2 2009), Ovid MEDLINE (1950 to June Week 2 2009), Ovid EMBASE (1980 to 2009 Week 25), EBSCO CINAHL (1982 to June Week 3 2009), the National Research Register, relevant conference proceedings and article reference lists and contacted experts. SELECTION CRITERIA: Randomised and quasi randomised controlled trials of preoperative fasting regimens for children were identified. DATA COLLECTION AND ANALYSIS: Data extraction and trial quality assessment was conducted independently by three authors. Trial authors were contacted for additional information including adverse events. MAIN RESULTS: This first update of the review identified two additional eligible studies, bringing the total number of included studies to 25 (forty seven randomised controlled comparisons involving 2543 children considered to be at normal risk of regurgitation or aspiration during anaesthesia). Only one incidence of aspiration and regurgitation was reported.Children permitted fluids up to 120 minutes preoperatively were not found to experience higher gastric volumes or lower gastric pH values than those who fasted. The children permitted fluids were less thirsty and hungry, better behaved and more comfortable than those who fasted.Clear fluids preoperatively did not result in a clinically important difference in children's gastric volume or pH. Evidence relating to the preoperative intake of milk was sparse. The volume of fluid permitted during the preoperative period did not appear to impact on children's intraoperative gastric volume or pH contents. AUTHORS' CONCLUSIONS: There is no evidence that children who are denied oral fluids for more than six hours preoperatively benefit in terms of intraoperative gastric volume and pH compared with children permitted unlimited fluids up to two hours preoperatively. Children permitted fluids have a more comfortable preoperative experience in terms of thirst and hunger. This evidence applies only to children who are considered to be at normal risk of aspiration/regurgitation during anaesthesia.

BACKGROUND: Emergency Nurse Practitioners (ENP) are increasingly managing minor injuries in Accident and Emergency departments across the United Kingdom. This study aimed to develop methods and tools that could be used to measure the quality of ENP-led care. These tools were then tested in a randomized controlled trial. METHODS: A convenience sample of 199 eligible patients, over 16 years old, and with specific minor injuries was randomized either to ENP-led care (n = 99) or Senior House Officer (SHO)-led care (n = 100) and were diagnosed, treated, referred or discharged by this lead clinician. Following treatment, patients were asked to complete a patient satisfaction questionnaire related to the consultation. Clinical documentation was assessed using a 'Documentation Audit Tool'. A follow-up questionnaire was sent to all patients at 1 month. Return visits to the department and missed injuries were monitored. RESULTS: Patients were satisfied with the level of care from both ENPs and SHOs. However, they reported that ENPs were easier to talk to (P = 0.009); gave them information on accident and illness prevention (P = 0.001); and gave them enough information on their injury (P = 0.007). Overall they were more satisfied with the treatment provided by ENPs than with that from SHOs (P < 0.001). ENPs' clinical documentation was of higher quality than SHOs (P < 0.001). No differences were found in recovery times, level of symptoms, time off work or unplanned follow-up between groups. Missed injuries were the same for both groups (n = 1 in each group). CONCLUSION: The study was sufficiently large to demonstrate higher levels of patient satisfaction and clinical documentation quality with ENP-led than SHO-led care. A larger study involving 769 patients in each arm would be required to detect a 2% difference in missed injury rates. The methods and tools used in this trial could be used in Accident and Emergency departments to measure the quality of ENP-led care.

BACKGROUND: Nurturing critical thinking skills in the classroom is considered an important educational activity. It is believed that critical thinking skills are transferable and that they can be applied in practice when appraising, evaluating and implementing research. That more nurses than ever before have been judged academically knowledgeable in research has not guaranteed the transfer of such knowledge to practice. AIM OF THE PAPER: This paper discusses some of the reasons for the failure to narrow the gap between research and practice. In particular we argue that, if nurses are encouraged to develop creative and generative thinking alongside their critical thinking skills, then the art of nursing will have fuller representation in education, research and practice. DISCUSSION: The successful development of critical thinking skills for academic purposes does not necessarily mean that these skills are used in practice in relation either to research or clinical decision-making. This suggests that the transferability of critical thinking skills is less than straightforward. Indeed, there has been little narrowing of the research-practice gap since students started to learn critical thinking for academic purposes. However, we propose that thinking skills can be encouraged in the context of practice and that regular educational events, such as journal clubs, can contribute to developing critical thinking in the practice environment. CONCLUSIONS: The research-practice gap will reduce only if research becomes part of practitioners' ideology, which includes the art and science of nursing. Critical and creative thinking are prerequisites to narrowing the disjuncture between research and practice, and we suggest that educators and practitioners explore structured ways of meeting together to appraise literature as a possible means of making use of their thinking and knowledge in clinical practice.

BACKGROUND: Involving patients in the determination of their care is increasingly important, and health-care professionals worldwide have recognized a need for clinical outcome measures and interventions that facilitate patient-centred care delivery in a range of settings. AIM: A mixed-methods review was conducted, which aimed to identify stroke-specific patient-centred outcome measures and patient-centred interventions. SEARCH STRATEGY: Databases searched included MEDLINE and PsycINFO; search strings were based on MeSH terms and keywords associated with the terms 'stroke' and 'patient-centred'. DATA EXTRACTION AND ANALYSIS: Descriptive statistics were used to report quantitative data; thematic analysis was also performed in the included studies. MAIN RESULTS: Three patient-centred outcome measures (Subjective Index of Physical and Social Outcomes, Stroke Impact Scale, Communication Outcome after Stroke scale) and four interventions were identified. Key elements of intervention design included delivery in people's own homes, involvement of families and tailoring to individual needs and priorities. Thematic analysis enabled description of three broad themes: meaningfulness and relevance, quality, and communication, which informed the development of a definition of patient-centred care specific to the specialty of stroke. CONCLUSIONS: It is important for health-care professionals to ensure that their practice is relevant to patients and families. The review identified three stroke-specific patient-centred outcome measures, key elements of patient-centred interventions, and informed the development of a definition of patient-centred care. These review-derived outputs represent a useful starting point for health-care professionals, whatever their specialty, who are working to reconcile tensions between priorities of health-care professionals and those of patients and their families, to ensure delivery of patient-centred care.