Suicide in anaesthetists: a systematic review

Evidence suggests that healthcare professionals are at an increased risk of dying by suicide, with anaesthetists at particularly high risk. However, much of the data on which this is based are historical. With a focus on the epidemiology and methods used, we conducted a systematic review of evidence regarding suicide and suicidal behaviour among anaesthetists to provide a more contemporary summary. The systematic review process was adapted from a previous similar study in veterinary surgeons and was consistent with recommended guidance. We identified 54 articles published in or after 1990 that had anaesthetist-specific data and met the inclusion criteria. Seven of these reported epidemiological data, of which four were published after 2000. Although none of the more recent studies reported standardised mortality rates specific to suicide in anaesthetists, the proportion of anaesthetists dying by suicide was increased with respect to comparator groups, which is consistent with previous findings. Eleven studies that included information on suicidal behaviour reported suicidal ideation in 3.2-25% of individuals (six studies) and suicide attempts in 0.5-2% (four studies). Studies reporting methods of suicide highlighted the use of anaesthetic drugs, particularly propofol, supporting the suggestion that the increased risk of suicide in anaesthetists may be related to the availability of the means. We discuss our findings in relation to other recently published data and guidance concerning mental health problems in anaesthetists.

Audio/visual recording of doctors in hospitals: Guideline from the Association of Anaesthetists

Guidelines are presented that summarise the legal position regarding the audio/visual recording of doctors and others in hospitals. In general, there are few, if any, legal grounds for refusing a request by patients to record procedures and/or discussions with clinicians, although some staff may feel uncomfortable being recorded. Trusts and others are advised to draw up local policies and ensure staff and patients are adequately informed.

An analysis of citations of publications in anaesthesia journals

Which journals cite work published in anaesthetic journals is of potential interest to authors, editors and publishers. We analysed citations made in 2017-2018 for articles, reviews, editorials and letters published by 12 anaesthetic journals in 2016, using the Web of Science™ citation index platform. We analysed 12,544 citations made for 3518 items. Citations were most often made by specialist anaesthesia journals and critical care journals, and occurred most commonly in articles, followed by reviews, editorials and letters. The median (IQR [range]) number of citations made per item was 3.3 (2.6-4.1 [1.6-5.1]). The median (IQR [range]) number of journals that cited the 12 source journals was 302 (236-449 [139-671]). The median (IQR [range]) proportion of citations made by the same journal that published the items (i.e. 'self-citations') was 15% (11-17% [5-32%]). There were 1305/1932 (68%) citations made by North American journals for items published in North American journals and 1712/2063 (83%) citations made by European journals for items published in European journals, p < 0.0001. Our analysis may inform authors, editors and publishers where to submit work, what editorial policy to pursue and what journal strategy to follow, respectively.

Attitudes of postnatal women and maternity staff towards audio recording of consent discussions

Audio recording consent discussions, and giving a copy of the recording to the patient to keep, might improve the consent process and reduce the risk of misunderstandings, complaints or medicolegal claims. However, there may be concerns over confidentiality and how being recorded could affect the consent discussion. We ascertained the views of 50 postnatal women and 100 maternity staff (25 anaesthetists, 25 obstetricians and 50 midwives) on making audio recordings of consent discussions. There was a wide range of opinions, with women and staff similarly supportive of audio recording overall, but the women were more supportive of recording than the staff when asked if they were against it, or whether they would support recording the discussion if the patient requested it; and less concerned than the staff regarding the potential disadvantages of audio recording. There were no significant differences in the views between anaesthetists, obstetricians and midwives.

The Effect of Timing of Pc.6 Acupuncture on Post-Operative Vomiting following Major Gynaecological Surgery

We have studied whether the antiemetic effect of PC.6 (Neiguan) acupuncture at the wrist in preventing post-operative nausea and vomiting is affected by the timing of its administration in fifty patients undergoing major gynaecological surgery. Patients were randomly assigned to receive PC.6 acupuncture either five minutes before induction of anaesthesia (Group 1), five minutes after induction of anaesthesia (Group 2) or when awake in the recovery room post-operatively (Group 3). There were no significant differences in emetic sequelae amongst the three groups, with respective incidences of vomiting of 29%, 24% and 25% within the first 6 hours post-operatively. In order to have an 80% power of detecting a difference between groups of the magnitude found, over 3600 patients would need to be studied. We conclude that general anaesthesia does not affect the antiemetic action of PC.6 acupuncture.

Ethical considerations in the uptake of influenza vaccination by healthcare workers

OBJECTIVES

The World Health Organization (WHO) recommends annual seasonal influenza vaccination of healthcare workers (HCWs). Under the current voluntary scheme in England, uptake of vaccine in this group remains well below the 75% target. A mandatory scheme may improve rates, but raises the ethical issue of imposed vaccination. However, the existing voluntary scheme could also potentially infringe autonomy if those not wanting to join feel pressured or coerced into vaccination. The aim of this study was to explore HCW views and experiences with the current influenza vaccination programme.

STUDY DESIGN

Questionnaire survey.

METHODS

Between March 2015 and April 2016, a total of 140 questionnaires were completed across seven HCW groups, with the demographic, vaccination and opinion data statistically analysed using the chi-squared test, Kruskal-Wallis test and Mann-Whitney U-test as appropriate.

RESULTS

No staff group met the national influenza vaccination target of 75% and vaccination rates varied between HCW groups. All groups reported some degree of external pressure to be vaccinated and there were mixed views on the concept of mandatory vaccination, with a lack of certainty over the vaccine's efficacy and/or a lack of information the most common reasons for not supporting it.

CONCLUSION

The current voluntary influenza vaccination scheme has a number of flaws. Improvements in the quality and availability of information provided to employees may help Trusts increase vaccination rates, or achieve acceptance of any proposed mandatory programme.

Strength of commonly used spinal needles: the ability to deform and resist deformation

We investigated the strength of commonly used spinal needles in relation to the amount of deformation, and registered forces during standardised testing. We investigated differences between manufacturers for the same length and gauge of Luer and non-Luer needles, and examined the effect of the internal stylet in terms of needle strength. A specialised rig was designed to perform the testing in both the horizontal and axial plane, reflecting common industrial tests and clinical use. Needles from four commonly used manufacturers were used (Vygon, Becton Dickinson, B Braun, and Pajunk). Needles of 25 G and 27 G were tested in 90-mm and 120-mm lengths. We found significant differences in terms of the size of final deformation and 'toughness'/resistance to deformation between needles of different brands. There were also significant differences between horizontal tests conducted as an industry standard and our own axial test. This may have bearing on clinical use in terms of the incidence of bending and breakage. The presence of the internal stylet resulted in significantly greater toughness in many needles, but had little effect on the degree of deformation. Comparison of Luer and non-Luer needles of the same brand and size showed few significant differences in strength. This result is reassuring, given the imminent change from Luer to non-Luer needles that is to occur in the UK.

AAGBI: Consent for anaesthesia 2017: Association of Anaesthetists of Great Britain and Ireland

Previous guidelines on consent for anaesthesia were issued by the Association of Anaesthetists of Great Britain and Ireland in 1999 and revised in 2006. The following guidelines have been produced in response to the changing ethical and legal background against which anaesthetists, and also intensivists and pain specialists, currently work, while retaining the key principles of respect for patients' autonomy and the need to provide adequate information. The main points of difference between the relevant legal frameworks in England and Wales and Scotland, Northern Ireland and the Republic of Ireland are also highlighted.

Medical studies with 'no material ethical issues' - an unhelpful, confusing and potentially unethical suggestion

Both the recent 'Warner' review of the UK research ethics committee (REC) system and the subsequent consultation document produced by the Central Office for Research Ethics Committees (COREC) emphasize the need to distinguish 'research' from what might be termed 'non-research'. This is to be determined through a process of filtering or 'triage', the intention being that RECs will avoid considering proposals with 'no material ethical issues'. In this paper we argue that trying to distinguish 'true' research from other projects is counterproductive, misleading and potentially unethical. Our case is built around three assertions: (1) the distinction between research and non-research is imprecise; (2) both medical research and non-research can generate similar ethical issues; and (3) projects should be judged according to what they involve, not how they are labelled.

Calculating the probability of random sampling for continuous variables in submitted or published randomised controlled trials

In a previous paper, one of the authors (JBC) used a chi-squared method to analyse the means (SD) of baseline variables, such as height or weight, from randomised controlled trials by Fujii et al., concluding that the probabilities that the reported distributions arose by chance were infinitesimally small. Subsequent testing of that chi-squared method, using simulation, suggested that the method was incorrect. This paper corrects the chi-squared method and tests its performance and the performance of Monte Carlo simulations and ANOVA to analyse the probability of random sampling. The corrected chi-squared method and ANOVA method became inaccurate when applied to means that were reported imprecisely. Monte Carlo simulations confirmed that baseline data from 158 randomised controlled trials by Fujii et al. were different to those from 329 trials published by other authors and that the distribution of Fujii et al.'s data were different to the expected distribution, both p < 10(-16) . The number of Fujii randomised controlled trials with unlikely distributions was less with Monte Carlo simulation than with the 2012 chi-squared method: 102 vs 117 trials with p < 0.05; 60 vs 86 for p < 0.01; 30 vs 56 for p < 0.001; and 12 vs 24 for p < 0.00001, respectively. The Monte Carlo analysis nevertheless confirmed the original conclusion that the distribution of the data presented by Fujii et al. was extremely unlikely to have arisen from observed data. The Monte Carlo analysis may be an appropriate screening tool to check for non-random (i.e. unreliable) data in randomised controlled trials submitted to journals.

Efficacy of cardiopulmonary resuscitation in the supine position with manual displacement of the uterus vs lateral tilt using a firm wedge: a manikin study

Prevention of aortocaval compression is essential for effective cardiopulmonary resuscitation in late pregnancy. This can be achieved by either lateral maternal tilt or lateral uterine displacement. Results from a previous manikin study show that a firm foam-rubber wedge allowed successful chest compressions whilst providing stable and reliable lateral tilt. However, it did not investigate resuscitation in the supine position with manual uterine displacement. The aim of this study was to compare the effectiveness of chest compressions in a manikin in the supine position vs lateral tilt using a foam-rubber wedge, both on the floor and on a typical patient bed. Overall, we found that compressions were easier to perform in the supine position (p = 0.007 (bed) and 0.048 (floor)), and with greater stability in the supine position on the floor (p = 0.011). The effectiveness of chest compressions was similar in both the supine/uterine displacement and the lateral tilt positions, suggesting that either method may be suitable for CPR.

Pregnant women's views on informed consent for research in labour

BACKGROUND

Studies of the optimal treatment of accidental dural puncture occurring during epidural insertion in labour are difficult for practical reasons and because of the ethical issues around seeking consent. In a recent study of accidental dural puncture, participants were assigned to one of two treatment groups and only informed about the study and consent sought, after treatment. We sought the views of parturients on the timing of consent for such a study.

METHODS

After ethical approval and written consent, 100 nulliparous women in the third trimester of pregnancy completed a structured, facilitated questionnaire, rating the acceptability of the consent process occurring: (i) in antenatal clinic; (ii) after the epidural was requested in labour; (iii) after the accidental dural puncture had occurred but before treatment; (iv) after the allocated treatment; or (v) without consent (waived consent). Results were analysed with the Friedman and Wilcoxon signed-rank tests.

RESULTS

Antenatal consent was considered the most acceptable option, whilst consent on request for epidural analgesia and after accidental dural puncture were least acceptable. Consent after treatment and waived consent were rated in-between these extremes. There was a statistically significant difference between these three groups (P<0.0001). There was a wide range of opinions on each option presented.

CONCLUSIONS

Antenatal consent was the preferred option but if this is not possible and the need for the research is strong, consent for the use of women's data after intervention, or waived consent, is acceptable to many women. It is important to seek the views of the participants themselves before planning research with difficult ethical aspects.

Reference ranges for thromboelastography (TEG(®) ) and traditional coagulation tests in term parturients undergoing caesarean section under spinal anaesthesia*

There has been little published work defining 'normal' thromboelastography (TEG(®) ) values in healthy parturients, and few large studies defining reference ranges for traditional coagulation tests in this patient group. Our aim was to establish peri-operative reference ranges for TEG and for standard laboratory coagulation tests in our pregnant population. Fifty healthy term parturients presenting for elective caesarean section under spinal anaesthesia had blood samples taken pre-operatively, on arrival in the recovery room and, in a subset of 33 women, 4 h after routine thromboprophylaxis with enoxaparin 40 mg. All three samples had TEG analysis, the first and second having standard laboratory coagulation tests in addition. Reference ranges for our pregnant population were established, demonstrating a hypercoagulable state in term parturients and a significant effect of enoxaparin. The standard coagulation reference ranges were within 98% of the local non-pregnant ranges. These reference ranges provide a useful comparator for peri-operative TEG and routine coagulation analysis in term parturients.