Student-led intervention to inNOvate hand hygiene practice in Auckland Region's medical students (the No HHARMS study)

BACKGROUND

Hand hygiene is important in reducing healthcare-associated infections. The World Health Organization has defined 'five moments' when hand hygiene compliance is required. During 2013, New Zealand national data showed poor compliance with these moments by medical students.

AIM

To improve medical students' compliance with the five moments.

METHODS

In this prospective student-led quality improvement initiative, student investigators developed, implemented and evaluated a multi-modal intervention comprising a three-month social media campaign, a competition and an entertaining educational video. Data on individual patient-medical student interactions were collected covertly by observers at baseline and at one week, six weeks and three months after initiation of the intervention.

RESULTS

During the campaign, compliance improved in moment 2, but not significantly in moments 1, 3, 4 or 5. Statistical analysis of amalgamated data was limited by non-independent data points-a consideration apparently not always addressed in previous studies.

CONCLUSIONS

The initiative produced improvements in compliance by medical students with one hand hygiene moment. Statistical analysis of amalgamated data for all five moments should allow for the non-independence of each occasion in which clinicians interact with a patient. More work is needed to ensure excellent hand hygiene practices of future doctors.

Reducing harm from falls

Serious adverse event reporting from district health boards (DHBs) brought in-hospital falls to the attention of the Health Quality & Safety Commission (the Commission) when it was incepted in 2010. In 2012, responding to the large numbers reported, the Commission began planning for a three-year programme to reduce harm from falls, initially to run 2013-2015. In this article we discuss the serious consequences of falls, and the challenges and practical considerations involved in reducing the risk of falling and the rate of falls. We explore the Commission's choice of an adaptive approach in its programme, and show how a targeted measurement framework and national action has led to a nationwide statistically significant reduction in fractured neck of femur (hip fracture) and associated costs resulting from in-hospital falls, from a median of 12 per 100,000 admissions to eight per 100,000 admissions, sustained as at June 2016 for six quarters. This reduction reflects nationwide implementation of two key care processes: 1.) the percentage of patients 75 and over provided with an assessment of their risk of falling upon admission to hospital has risen from 77% in the first quarter of 2013 to 91% nationally in June 2016, 2.) the percentage of those with identified risk who were provided with an individualised care plan that addressed those risks has risen from 77% of older patients in the first quarter of 2013 to 95% nationally in June 2016. (These results are also reflected in a 14% decrease to 30 June 2016 in numbers of falls reported by DHBs as serious adverse events). Finally, we give a call to arms to the disparate health practitioners and services across all settings for individualised responses to prevent falls one patient at a time, and for leadership responses that promote an integrated approach to falls in older people.

Improved compliance with the World Health Organization Surgical Safety Checklist is associated with reduced surgical specimen labelling errors

AIMS

A new approach to administering the surgical safety checklist (SSC) at our institution using wall-mounted charts for each SSC domain coupled with migrated leadership among operating room (OR) sub-teams, led to improved compliance with the Sign Out domain. Since surgical specimens are reviewed at Sign Out, we aimed to quantify any related change in surgical specimen labelling errors.

METHODS

Prospectively maintained error logs for surgical specimens sent to pathology were examined for the six months before and after introduction of the new SSC administration paradigm. We recorded errors made in the labelling or completion of the specimen pot and on the specimen laboratory request form. Total error rates were calculated from the number of errors divided by total number of specimens. Rates from the two periods were compared using a chi square test.

RESULTS

There were 19 errors in 4,760 specimens (rate 3.99/1,000) and eight errors in 5,065 specimens (rate 1.58/1,000) before and after the change in SSC administration paradigm (P=0.0225).

CONCLUSIONS

Improved compliance with administering the Sign Out domain of the SSC can reduce surgical specimen errors. This finding provides further evidence that OR teams should optimise compliance with the SSC.

Assessing the similarity of mental models of operating room team members and implications for patient safety: a prospective, replicated study

BACKGROUND

Patient safety depends on effective teamwork. The similarity of team members' mental models - or their shared understanding-regarding clinical tasks is likely to influence the effectiveness of teamwork. Mental models have not been measured in the complex, high-acuity environment of the operating room (OR), where professionals of different backgrounds must work together to achieve the best surgical outcome for each patient. Therefore, we aimed to explore the similarity of mental models of task sequence and of responsibility for task within multidisciplinary OR teams.

METHODS

We developed a computer-based card sorting tool (Momento) to capture the information on mental models in 20 six-person surgical teams, each comprised of three subteams (anaesthesia, surgery, and nursing) for two simulated laparotomies. Team members sorted 20 cards depicting key tasks according to when in the procedure each task should be performed, and which subteam was primarily responsible for each task. Within each OR team and subteam, we conducted pairwise comparisons of scores to arrive at mean similarity scores for each task.

RESULTS

Mean similarity score for task sequence was 87 % (range 57-97 %). Mean score for responsibility for task was 70 % (range = 38-100 %), but for half of the tasks was only 51 % (range = 38-69 %). Participants believed their own subteam was primarily responsible for approximately half the tasks in each procedure.

CONCLUSIONS

We found differences in the mental models of some OR team members about responsibility for and order of certain tasks in an emergency laparotomy. Momento is a tool that could help elucidate and better align the mental models of OR team members about surgical procedures and thereby improve teamwork and outcomes for patients.

Improved scores for observed teamwork in the clinical environment following a multidisciplinary operating room simulation intervention

AIMS

We ran a Multidisciplinary Operating Room Simulation (MORSim) course for 20 complete general surgical teams from two large metropolitan hospitals. Our goal was to improve teamwork and communication in the operating room (OR). We hypothesised that scores for teamwork and communication in the OR would improve back in the workplace following MORSim. We used an extended Behavioural Marker Risk Index (BMRI) to measure teamwork and communication, because a relationship has previously been documented between BMRI scores and surgical patient outcomes.

METHODS

Trained observers scored general surgical teams in the OR at the two study hospitals before and after MORSim, using the BMRI.

RESULTS

Analysis of BMRI scores for the 224 general surgical cases before and 213 cases after MORSim showed BMRI scores improved by more than 20% (0.41 v 0.32, p<0.001). Previous research suggests that this improved teamwork score would translate into a clinically important reduction in complications and mortality in surgical patients.

CONCLUSIONS

We demonstrated an improvement in scores for teamwork and communication in general surgical ORs following our intervention. These results support the use of simulation-based multidisciplinary team training for OR staff to promote better teamwork and communication, and potentially improve outcomes for general surgical patients.

Refining Target-Controlled Infusion: An Assessment of Pharmacodynamic Target-Controlled Infusion of Propofol and Remifentanil Using a Response Surface Model of Their Combined Effects on Bispectral Index

BACKGROUND

Propofol and remifentanil are commonly combined for total IV anesthesia. The pharmacokinetics (PK), pharmacodynamics (PD), and drug interactions of the combination are well understood, but the use of a combined PK and PD model to control target-controlled infusion pumps has not been investigated. In this study, we prospectively tested the accuracy of a PD target-controlled infusion algorithm for propofol and remifentanil using a response surface model of their combined effects on Bispectral Index (BIS).

METHODS

Effect-site, target-controlled infusions of propofol and remifentanil were given using an algorithm based on standard PK models linked to a PD response surface model of their combined effects on BIS. The combination of a targeted BIS value and adjustable ratio of propofol to remifentanil was used to adjust infusion rates. The standard model performance measures of median performance error (bias) and median absolute performance error (inaccuracy), expressed as percentages, were used to assess accuracy of the infusions in a convenience sample of 50 adult patients undergoing surgery with general anesthesia. The influence of age and weight on the performance of the model was also assessed.

RESULTS

Patients had a mean (range) age of 48 (19-73) years, weight of 80 (45-169) kg, and body mass index of 28 (19-45) kg/m. The overall model had a bias of 8% (SD 24%) and inaccuracy of 25% (SD 13%). Performance was least accurate during the early induction phase of anesthesia. There was no significant bias in BIS predictions with increasing age (P = 0.44) or weight (P = 0.56).

CONCLUSIONS

The algorithm performed adequately in a clinical setting. The algorithm could be further refined, and assessment of its accuracy and utility in comparison to current clinical practice for giving IV anesthesia is warranted.

Deviation from accepted drug administration guidelines during anaesthesia in twenty highly realistic simulated cases

Deviations from accepted practice guidelines and protocols are poorly understood, yet some deviations are likely to be deliberate and carry potential for patient harm. Anaesthetic teams practice in a complex work environment and anaesthetists are unusual in that they both prescribe and administer the drugs they use, allowing scope for idiosyncratic practise. We aimed to better understand the intentions underlying deviation from accepted guidelines during drug administration in simulated cases. An observer recorded events that may have increased the risk of patient harm ('Events of Interest' [EOIs]) during 20 highly realistic simulated anaesthetic cases. In semi-structured interviews, details of EOIs were confirmed with participating anaesthetic teams, and intentions and reasoning underlying the confirmed deviations were discussed. Confirmed details of EOIs were tabulated and we undertook qualitative analysis of interview transcripts. Twenty-four EOIs (69% of 35 recorded) were judged by participants to carry potential for patient harm, and 12 (34%) were judged to be deviations from accepted guidelines (including one drug administration error). Underlying reasons for deviations included a strong sense of clinical autonomy, poor clinical relevance and a lack of evidence for guidelines, ingrained habits learnt in early training, and the influence of peers. Guidelines are important in clinical practice, yet self-identified deviation from accepted guidelines was common in our results, and all but one of these events was judged to carry potential for patient harm. A better understanding of the reasons underlying deviation from accepted guidelines is essential to the design of more effective guidelines and to achieving compliance.

The effects of the general anaesthetic isoflurane on the honey bee (Apis mellifera) circadian clock

General anaesthesia administered during the day has previously been shown to phase shift the honey bee clock. We describe a phase response curve for honey bees (n=105) to six hour isoflurane anaesthesia. The honey bee isoflurane PRC is "weak" with a delay portion (maximum shift of -1.88 hours, circadian time 0 - 3) but no advance zone. The isoflurane-induced shifts observed here are in direct opposition to those of light. Furthermore, concurrent administration of light and isoflurane abolishes the shifts that occur with isoflurane alone. Light may thus provide a means of reducing isoflurane-induced phase shifts.

Paperless anesthesia: uses and abuses of these data

Demonstrably accurate records facilitate clinical decision making, improve patient safety, provide better defense against frivolous lawsuits, and enable better medical policy decisions. Anesthesia Information Management Systems (AIMS) have the potential to improve on the accuracy and reliability of handwritten records. Interfaces with electronic recording systems within the hospital or wider community allow correlation of anesthesia relevant data with biochemistry laboratory results, billing sections, radiological units, pharmacy, earlier patient records, and other systems. Electronic storage of large and accurate datasets has lent itself to quality assurance, enhancement of patient safety, research, cost containment, scheduling, anesthesia training initiatives, and has even stimulated organizational change. The time for record making may be increased by AIMS, but in some cases has been reduced. The question of impact on vigilance is not entirely settled, but substantial negative effects seem to be unlikely. The usefulness of these large databases depends on the accuracy of data and they may be incorrect or incomplete. Consequent biases are threats to the validity of research results. Data mining of biomedical databases makes it easier for individuals with political, social, or economic agendas to generate misleading research findings for the purpose of manipulating public opinion and swaying policymakers. There remains a fear that accessibility of data may have undesirable regulatory or legal consequences. Increasing regulation of treatment options during the perioperative period through regulated policies could reduce autonomy for clinicians. These fears are as yet unsubstantiated.

A behaviourally anchored rating scale for evaluating the use of the WHO surgical safety checklist: development and initial evaluation of the WHOBARS

BACKGROUND

Realising the full potential of the WHO Surgical Safety Checklist (SSC) to reduce perioperative harm requires the constructive engagement of all operating room (OR) team members during its administration. To facilitate research on SSC implementation, a valid and reliable instrument is needed for measuring OR team behaviours during its administration. We developed a behaviourally anchored rating scale (BARS) for this purpose.

METHODS

We used a modified Delphi process, involving 16 subject matter experts, to compile a BARS with behavioural domains applicable to all three phases of the SSC. We evaluated the instrument in 80 adult OR cases and 30 simulated cases using two medical student raters and seven expert raters, respectively. Intraclass correlation coefficients were calculated to assess inter-rater reliability. Internal consistency and instrument discrimination were explored. Sample size estimates for potential study designs using the instrument were calculated.

RESULTS

The Delphi process resulted in a BARS instrument (the WHOBARS) with five behavioural domains. Intraclass correlation coefficients calculated from the OR cases exceeded 0.80 for 80% of the instrument's domains across the SSC phases. The WHOBARS showed high internal consistency across the three phases of the SSC and ability to discriminate among surgical cases in both clinical and simulated settings. Fewer than 20 cases per group would be required to show a difference of 1 point between groups in studies of the SSC, where α=0.05 and β=0.8.

CONCLUSION

We have developed a generic instrument for comprehensively rating the administration of the SSC and informing initiatives to realise its full potential. We have provided data supporting its capacity for discrimination, internal consistency and inter-rater reliability. Further psychometric evaluation is warranted.

Reducing perioperative harm in New Zealand: the WHO Surgical Safety Checklist, briefings and debriefings, and venous thrombembolism prophylaxis

New Zealand appears to have a relatively high rate of perioperative adverse events. The Health Quality & Safety Commission's Safe Surgery NZ programme was introduced to address the rates of perioperative harm in New Zealand by promoting proper and effective use of the World Health Organization (WHO) Surgical Safety Checklist, and by encouraging use of operating room (OR) team briefings and debriefings. Venous thromboembolism prophylaxis is a key part of the checklist as deployed in New Zealand ORs, but it remains underused or variably used as well. Communication and teamwork are critical to improving patient safety and efficiency in the OR, and these interventions have demonstrated effectiveness in building and melding effective teams.

Medical Students and informed consent: A consensus statement prepared by the Faculties of Medical and Health Science of the Universities of Auckland and Otago, Chief Medical Officers of District Health Boards, New Zealand Medical Students' Association and the Medical Council of New Zealand

To develop a national consensus statement to promote a pragmatic, appropriate and unified approach to seeking consent for medical student involvement in patient care. A modified Delphi technique was used to develop the consensus statement involving stakeholders. Feedback from consultation and each stakeholder helped to shape the final consensus statement. The consensus statement is a nationally-agreed statement concerning medical student involvement in patient care, which will be useful for medical students, health care professionals and patients.

A new surgical site infection improvement programme for New Zealand: early progress

Two to five percent of those who have an inpatient surgical procedure will experience a surgical site infection (SSI). The Health Quality & Safety Commission has instituted New Zealand's first national Surgical Site Infection Improvement Programme (the SSII Programme), delivered jointly by Auckland and Canterbury District Health Boards. Through a combined package of surveillance and improvement interventions the SSII Programme aims to reduce the incidence of SSIs in New Zealand hospitals, beginning initially with hip and knee arthroplasties. Within one year of the programme starting there has been a significant nationwide improvement in the timing of surgical antimicrobial prophylaxis (p<0.0001), and the administration of the correct dose (p<0.0001). National compliance with an alcohol-based skin preparation remains high at > 95 %. In this paper we describe the purpose, background, structure and rationale of the programme and provide results to date.

The measurement of New Zealand health care

The effective and economical measurement of the quality and safety of health and disability services in New Zealand is of signal importance. The Health Quality and Safety Commission has overseen the introduction of an architecture of interacting measures. These include quality and safety indicators, or QSIs, which are whole-system measures; quality and safety markers, or QSMs, which are targeted measures of quality and safety interventions comprising process and outcome measures in sets; and the New Zealand Atlas of Healthcare Variation, which illustrates the differences in the health care received in different regions and by different groups of patients within New Zealand.