Improving Timely Surgical Antibiotic Prophylaxis Redosing Administration Using Computerized Record Prompts

Current Antimicrobial Use in Horses Undergoing Exploratory Celiotomy: A Survey of Board-Certified Equine Specialists

In the past decade, there has been a considerable increase in the recognition of antimicrobial resistance in equine practice. The objective of this study was to survey the current clinical use of antimicrobials for a commonly performed surgical procedure (exploratory celiotomy) with the goal of understanding how recent literature and changes in microbial resistance patterns may have impacted antimicrobial selection practices. An electronic survey was distributed to veterinary professionals within the American College of Veterinary Internal Medicine (ACVIM) and the American College of Veterinary Surgery (ACVS). A total of 113 completed surveys were returned. Practitioners reported antimicrobials were most frequently given 30-60 min preoperatively (63.1%). Two antimicrobial classes were typically administered (95.5%), with gentamicin (98.2%) and potassium penicillin (74.3%) being the most common. Antimicrobials were typically not re-dosed intraoperatively (78.6%). Factors that affected overall treatment length postoperatively included resection (81.4%), bloodwork (75.2%), enterotomy (74.3%), fever (85.0%), incisional complications (76.1%), and thrombophlebitis (67.3%). The most common duration of antimicrobial use was 1-3 d for non-strangulating lesions (54.4% of cases) and inflammatory conditions such as enteritis or peritonitis (50.4%), and 3-5 d for strangulating lesions (63.7%). Peri-incisional and intra-abdominal antimicrobials were used by 24.8% and 11.5% of respondents, respectively. In summary, antimicrobial usage patterns were highly variable among practitioners and, at times, not concordant with current literature.

Single-Dose Antibiotic Prophylaxis with Ertapenem Increases Compliance with Recommendations for Surgical Antibiotic Prophylaxis in Elective Colorectal Surgery: A Retrospective, Single-Center Analysis

Background: Compliance with guideline recommendations for surgical antibiotic prophylaxis (SAP) in colorectal surgery, particularly redosing, has been suboptimal at many institutions including ours. This study aimed to evaluate if single-dose antibiotic prophylaxis with ertapenem improves compliance with guideline recommendations for SAP versus multiple-dose antibiotic prophylaxis in elective colorectal surgery. Methods: A retrospective, cohort study of the use of ertapenem compared with standard of care antibiotic agents was performed in adult patients undergoing elective colorectal surgery at an academic medical center between January 2020 and February 2022. The primary outcome was compliance with guideline-recommended SAP for colorectal surgery. The secondary outcome was surgical site infections (SSIs) within 30 days after surgery. Results: A total of 135 patients were included in this study. Fifty-eight patients received single-dose antibiotic prophylaxis with ertapenem and 77 patients received multiple-dose antibiotic prophylaxis. Cefazolin plus metronidazole was the most common multiple-dose regimen (65 of 77). Single-dose antibiotic prophylaxis with ertapenem increased overall SAP compliance (96.6% vs. 64.9%; p < 0.001) as well as compliance with antibiotic administration within the recommended time period before incision (96.6% vs. 84.4%; p = 0.022), compliance with intra-operative antibiotic redosing when warranted (100% vs. 83.1%; p < 0.001), and compliance with guideline-recommended dosing (100% vs. 92.2%; p = 0.037). Surgical site infection rates were not statistically different between the groups (12.1% vs. 19.4%; p = 0.248). Conclusions: Single-dose antibiotic prophylaxis with ertapenem increased compliance with guideline-recommended SAP for elective colorectal surgeries. No statistically significant difference was observed in SSI rates regardless of the antibiotic regimen used.

Utilization of neurosurgical perioperative antimicrobial prophylaxis in a Chinese teaching hospital

Background Audits of antimicrobial prophylaxis is an essential strategy to identify practice gaps in antimicrobial prescribing in healthcare facilities. There is a lack of studies on the costs, quality, and antimicrobial use density of neurosurgical perioperative antimicrobial prophylaxis in China. Objectives Evaluate the appropriateness of perioperative antimicrobial prophylaxis in neurosurgeries and analyze the costs, quality, and antimicrobial use density of neurosurgical perioperative antimicrobial prophylaxis. Setting Beijing Tsinghua Changgung Hospital, a teaching hospital in Beijing. Methods This retrospective study was conducted among 262 neurosurgical patients without infections during 2017. The appropriateness of perioperative antimicrobial prophylaxis was determined based on relevant international and Chinese perioperative antimicrobial prophylaxis guidelines. Main outcome measures Discrepancy rates in perioperative antimicrobial prophylaxis, including indication, choice of antimicrobials, dose, route of administration, time of administration of the first dose, re-dosing, and duration, were analyzed. Results Discrepancies were observed between current practice and relevant guidelines. A total of 51 (32.1%) procedures failed to administer intraoperative re-dosing as needed, and the perioperative antimicrobial prophylaxis duration of 217 (82.8%) procedures was inappropriately prolonged. The choice of antimicrobial agents was optimal in 249 (95%) procedures, and the timing of perioperative antimicrobial prophylaxis was appropriate in all procedures. If perioperative antimicrobial prophylaxis was implemented according to guidelines, the defined daily dose per 100 procedures would decrease from 31.97 to 16.99, and the total cost would reduce from $2000 to $490. Conclusions Effective antimicrobial stewardship is urgently needed to promote the appropriateness of neurosurgical perioperative antimicrobial prophylaxis in China.

Improving the Compliance of Intraoperative Antibiotic Redosing: A Quality Improvement Initiative

Introduction:

At Children’s Hospital and Medical Center in Omaha, Nebraska, the intraoperative antibiotic redosing guidelines and the time frame considered compliant for redosing were unclear. This lack of clarity plus an ill-defined process for ensuring intraoperative antibiotic redosing resulted in a compliance rate of 11%. The organization’s surgical site infection (SSI) rate was 3.19%, above the national benchmark of 1.87%. The primary project goal was to increase intraoperative antibiotic redosing compliance. The secondary project goal was to decrease SSIs.

Methods:

With recommendations from the Infectious Disease Society of America, we developed new organizational redosing guidelines, as well as a new antibiotic-specific reminder alert in the electronic medical record. Implementation of the new guidelines and processes occurred after providing education to the anesthesiologists, surgeons, and circulating nurses. Monthly evaluation of data allowed for quick recognition of oversights followed by the initiation of process updates.

Results:

Data showed that the initial compliance rate for the intraoperative redosing of antibiotics was 11%. Following interventions, compliance has reached and sustained an average of 99%. Survey results show that provider knowledge of the guidelines and process has improved. Though not directly related, the National Surgical Quality Improvement Program observed that the SSI rate decreased from 3.19% in 2014 to 2.3% in 2018.

Conclusions:

This project demonstrates that comprehensive education along with antibiotic-specific electronic medical record alerts significantly increased the compliance of intraoperative antibiotic redosing at Children’s Hospital & Medical Center. Continuous education and monthly updates sustained results for over 40 months.

Investigation of Surgical Site Infections and Bacteria Detected Following Neck Dissection in Patients with Oral Cancer

During dissection for oral cancer, there is a high probability of bacteria indigenous to the oral cavity migrating to the surgical field in the neck due to the opening of new pathways of communication with the oral cavity. The risk of postoperative surgical site infection (SSI) in such patients is high due to malnutrition arising from perioperative eating disorders and dysphagia. Neck infections after neck dissection in oral cancer patients were investigated to elucidate the development of SSIs and their relationship with the results of bacterial culture.A total of 86 patients with oral squamous cell carcinoma who underwent neck dissection between January 2012 and December 2016 were enrolled. Ten factors were selected for investigation: (1) sex; (2) age; (3) primary site; (4) type of dissection; (5) whether or not there was a new pathway of communication between the oral cavity and the neck; (6) operative time; (7) blood loss; (8) number of drainage days; (9) amount of drainage at the time of drain removal; and (10) whether or not there was an SSI. Bacteria isolated from the catheter tip on drain removal were also investigated. Significant differences were observed between patients with and without SSIs (p-0.010) according to the presence of a new pathway of communication between the oral cavity and the neck (p-0.004); operative time (p-0.007); number of drainage days (p-0.029); or the amount of drainage at the time of drain removal. The present results indicate that selecting antibiotics appropriate to each patient and administering perioperative oral care are important in preventing SSIs.

Implementation of a multifaceted program to sustainably improve appropriate intraoperative antibiotic redosing

BACKGROUND

National guidelines recommend intraoperative redosing of prophylactic antibiotics at defined intervals to reduce the risk of surgical site infections. Compliance with these guidelines is poor.

METHODS

A quality improvement project-including education, progress reports, and automated redosing reminders in the anesthesia electronic health record-was implemented at a large university-affiliated hospital to increase rates of intraoperative antibiotic redosing for surgeries lasting more than 4 hours. A retrospective, observational study was then conducted. The primary outcome was the compliance rate with intraoperative antibiotic redosing criteria for all surgeries lasting more than 4 hours in the pre- and post-project period. The effect of the intervention was assessed by an interrupted time-series Poisson regression model.

RESULTS

A total of 13,695 surgical procedures were evaluated. Time-series analysis demonstrated that the project was associated with significant improvement of compliance rates (incidence rate ratio [IRR]: 1.16; P = .002) with no significant change in underlying improvement trend (IRR: 1.00; P = .22).

DISCUSSION

Few peer-reviewed manuscripts describe effective methods to ensure appropriate antibiotic redosing during prolonged surgeries. We demonstrated that a multipronged approach was very effective at producing immediate and sustained improvements in guideline compliance.

CONCLUSIONS

Implementation of a multifaceted intervention improved rates of guideline-concordant redosing of intraoperative prophylactic antibiotics.

Anesthesia information management: clinical decision support

PURPOSE OF REVIEW

Perioperative informatics tools continue to be developed at a rapid pace and offer clinicians the potential to greatly enhance clinical decision making. The goal of this review is to bring the reader updates on perioperative information management and discuss future research directions in the field.

RECENT FINDINGS

Clinical decision support tools become more timely, accurate, and, in some instances, have been shown to improve patient outcomes. When correctly implemented, they are critical tools for optimization of perioperative care.

SUMMARY

Perioperative informaticians continue to test new and innovative ways to enhance the delivery of anesthesia care, improving the safety and efficacy of perioperative management. Future work will continue to refine tools to ensure that perioperative informatics provides clinicians timely and accurate feedback, with demonstrable evidence that a decision support system improves patient outcomes.

Achieving 100 percent compliance to perioperative antibiotic administration: a quality improvement initiative

INTRODUCTION

Timely administration of prophylactic antibiotics within 60 minutes before surgical incision is important for reducing surgical site infections. This quality improvement initiative aimed to work towards achieving 100% compliance with perioperative antibiotic administration.

METHODS

We examined the workflow in our Anaesthesia Information Management System (AIMS) and proposed interventions using cause-and-effect analysis of anonymised anaesthetic records from eligible surgical cases extracted from AIMS. This ultimately led to the implementation of an antibiotic pop-up reminder. The overall process was done in a few small plan-do-study-act cycles involving raising awareness, education and reorganisation of AIMS before implementation of the antibiotic pop-up reminder. Data analysis took place from August 2014 to September 2016. Compliance was defined as documented antibiotic administration within 60 minutes before surgical incision, or as documented reason for omission.

RESULTS

The median monthly compliance rate, for 33,038 cases before and 28,315 cases after the reminder was implemented, increased from 67.0% at baseline to 94.5%. This increase was consistent and sustained for a year despite frequent personnel turnover. Documentation of antibiotic administration also improved from 81.7% to 99.3%, allowing us to identify and address novel problems that were initially not apparent, and resulting in several department recommendations. These included administering antibiotics later for cases with predicted longer-than-expected preparation times and bringing forward antibiotic administration in lower-segment Caesarean sections.

CONCLUSION

The use of information technology and implementation of an antibiotic pop-up reminder on AIMS streamlined our work processes and brought us closer to achieving 100% on-time compliance with perioperative antibiotic administration.

Noncompliance with surgical antimicrobial prophylaxis guidelines: A Jordanian experience in cesarean deliveries

BACKGROUND

Surgical site infections are common, especially in developing countries. Nevertheless, up to 60% of surgical site infections can be prevented with appropriate perioperative care, which includes among other measures using suitable surgical antimicrobial prophylaxis (SAP).

METHODS

After a short interview with patients and retrospective review of medical charts, compliance with 6 SAP parameters was assessed for appropriateness; those parameters are indication, choice, dose, time of administration, intraoperative redosing interval, and duration of prophylaxis in 1,173 operations.

RESULTS

Overall compliance was poor; nevertheless, certain components showed high compliance rates, such as indication and choice of antibiotics. The most frequent error noted was extended administration of prophylactic antibiotics, which was observed in 88.2% of the study population. Emergency operations were associated with a lower risk of noncompliance in administering the correct dose at the correct time (odds ratio, 0.63; 95% confidence interval, 0.47-0.83 and odds ratio, 0.21; 95% confidence interval, 0.14-0.3, respectively). On the other hand, women who underwent an emergency operation were associated with a 6-fold higher risk of receiving prophylactic therapy following surgery.

CONCLUSIONS

The present study demonstrated the existence of a surprisingly low level of overall compliance with the hospital-adapted SAP guidelines. Factors implicated in noncompliance were investigated, and the present results create a starting point to improve the current practice.

Perioperative Information Systems: Opportunities to Improve Delivery of Care and Clinical Outcomes in Cardiac and Vascular Surgery

A variety of existing perioperative informatics tools offer clinicians and researchers the opportunity to improve the delivery of care and clinical outcomes for patients undergoing cardiac and vascular surgery. Many of these tools can be used to improve the reliability of the care delivery process through the application of clinical decision support tools and/or quality improvement methodologies at a number of junctures. In this review, the authors will offer a concise overview of the existing perioperative informatics literature, with a focus on tools considered to be of utility in confronting the unique challenges inherent to cardiac and vascular surgery. The authors also highlight areas that they believe are of interest for future targeted inquiry.

A systematic review of near real-time and point-of-care clinical decision support in anesthesia information management systems

Anesthesia information management systems (AIMS) are sophisticated hardware and software technology solutions that can provide electronic feedback to anesthesia providers. This feedback can be tailored to provide clinical decision support (CDS) to aid clinicians with patient care processes, documentation compliance, and resource utilization. We conducted a systematic review of peer-reviewed articles on near real-time and point-of-care CDS within AIMS using the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols. Studies were identified by searches of the electronic databases Medline and EMBASE. Two reviewers screened studies based on title, abstract, and full text. Studies that were similar in intervention and desired outcome were grouped into CDS categories. Three reviewers graded the evidence within each category. The final analysis included 25 articles on CDS as implemented within AIMS. CDS categories included perioperative antibiotic prophylaxis, post-operative nausea and vomiting prophylaxis, vital sign monitors and alarms, glucose management, blood pressure management, ventilator management, clinical documentation, and resource utilization. Of these categories, the reviewers graded perioperative antibiotic prophylaxis and clinical documentation as having strong evidence per the peer reviewed literature. There is strong evidence for the inclusion of near real-time and point-of-care CDS in AIMS to enhance compliance with perioperative antibiotic prophylaxis and clinical documentation. Additional research is needed in many other areas of AIMS-based CDS.

Review of information technology for surgical patient care

BACKGROUND

Electronic health records (EHRs), computerized provider order entry (CPOE), and patient portals have experienced increased adoption by health care systems. The objective of this study was to review evidence regarding the impact of such health information technologies (HIT) on surgical practice.

MATERIALS AND METHODS

A search of Medline, EMBASE, CINAHL, and the Cochrane Library was performed to identify data-driven, nonsurvey studies about the effects of HIT on surgical care. Domain experts were queried for relevant articles. Two authors independently reviewed abstracts for inclusion criteria and analyzed full text of eligible articles.

RESULTS

A total of 2890 citations were identified. Of them, 32 observational studies and two randomized controlled trials met eligibility criteria. EHR or CPOE improved appropriate antibiotic administration for surgical procedures in 13 comparative observational studies. Five comparative observational studies indicated that electronically generated operative notes had increased accuracy, completeness, and availability in the medical record. The Internet as an information resource about surgical procedures was generally inadequate. Surgical patients and providers demonstrated rapid adoption of patient portals, with increasing proportions of online versus inperson outpatient surgical encounters.

CONCLUSIONS

The overall quality of evidence about the effects of HIT in surgical practice was low. Current data suggest an improvement in appropriate perioperative antibiotic administration and accuracy of operative reports from CPOE and EHR applications. Online consumer health educational resources and patient portals are popular among patients and families, but their impact has not been studied well in surgical populations. With increasing adoption of HIT, further research is needed to optimize the efficacy of such tools in surgical care.

Improving Compliance with Timely Intraoperative Redosing of Antimicrobials in Surgical Prophylaxis

Background.

Appropriate use of antimicrobials for surgical prophylaxis is an important patient safety issue. Antimicrobial levels should be present during the duration of the surgical procedure until incision site closure. For prolonged surgical procedures in which the tissue concentration of the prophylactic antimicrobial may decrease to below the necessary minimum inhibitory concentration, intraoperative redosing of antimicrobials may be crucial

Objective.

To evaluate compliance of appropriate intraoperative antimicrobial surgical prophylaxis using real-time intraoperative antimicrobial dosing reminders at a large teaching hospital.

Methods.

A retrospective review of electronic records (March 2009–October 2012) was performed. Patients were included if they were at least 18 years of age and underwent a procedure requiring antimicrobial surgical prophylaxis. Compliance was determined by comparing 3 time intervals: baseline (March 2009–March 2010); intervention period 1 (IP-1; April 1, 2010–April 30, 2012), and intervention period 2 (IP-2; May 1, 2012–October 31, 2012). Interventions included a hospital-wide standardized protocol comprising an automated intraoperative paging system to notify when antimicrobials should be redosed.

Results.

A total of 7,461 of 75,230 surgical procedures required intraoperative redosing of antimicrobials and were analyzed. Patient mean age (± standard deviation) was 45 ± 19 years, and 62.6% were female. The most common procedures that required prophylaxis were solid organ transplantation, neurosurgical procedures, and orthopedic procedures. Baseline compliance (n = 2,183) was 15.8%; compliance significantly improved to 65.3% during IP-1 (n = 4,486; P < .001). The compliance rate improved to 76.7% during IP-2 (P > .001 compared with no reminder).

Conclusions.

Compliance with redosing of intraoperative antimicrobials was improved with the combined approach of guidelines, education to healthcare providers, and real-time automated paging system.

Alerting thresholds for the prevention of intraoperative awareness with explicit recall: a secondary analysis of the Michigan Awareness Control Study

BACKGROUND

Intraoperative awareness with explicit recall is a potentially devastating complication of surgery that has been attributed to low anaesthetic concentrations in the vast majority of cases. Past studies have proposed the determination of an adequate dose for general anaesthetics that could be used to alert providers of potentially insufficient anaesthesia. However, there have been no systematic analyses of appropriate thresholds to develop population-based alerting algorithms for preventing intraoperative awareness.

OBJECTIVE

To identify a threshold for intraoperative alerting that could be applied for the prevention of awareness with explicit recall.

DESIGN

Secondary analysis of a randomised controlled trial (Michigan Awareness Control Study).

SETTING

Three hospitals at a tertiary care centre in the USA.

PATIENTS

Unselected patients presenting for surgery under general anaesthesia.

INTERVENTIONS

Alerts based on end-tidal anaesthetic concentration or bispectral index values.

MAIN OUTCOME MEASURES

Using case and outcomes data from the primary study, end-tidal anaesthetic concentration and bispectral index values were analysed using Youden's index and c-statistics derived from a receiver operating characteristic curve to determine a specific alerting threshold for the prevention of awareness.

RESULTS

No single population-based threshold that maximises sensitivity and specificity could be identified for the prevention of intraoperative awareness, using either anaesthetic concentration or bispectral index values. The c-statistic for anaesthetic concentration was 0.431 ± 0.046, and 0.491 ± 0.056 for bispectral index values.

CONCLUSION

We could not derive a single population-based alerting threshold for the prevention of intraoperative awareness using either anaesthetic concentration or bispectral index values. These data indicate a need to move towards individualised alerting strategies in the prevention of intraoperative awareness.

TRIAL REGISTRATION

Primary trial registration (Michigan Awareness Control Study) ClinicalTrials.gov identifier: NCT00689091.

Influencing Anesthesia Provider Behavior Using Anesthesia Information Management System Data for Near Real-Time Alerts and Post Hoc Reports

In this review article, we address issues related to using data from anesthesia information management systems (AIMS) to deliver near real-time alerts via AIMS workstation popups and/or alphanumeric pagers and post hoc reports via e-mail. We focus on reports and alerts for influencing the behavior of anesthesia providers (i.e., anesthesiologists, anesthesia residents, and nurse anesthetists). Multiple studies have shown that anesthesia clinical decision support (CDS) improves adherence to protocols and increases financial performance through facilitation of billing, regulatory, and compliance documentation; however, improved clinical outcomes have not been demonstrated. We inform developers and users of feedback systems about the multitude of concerns to consider during development and implementation of CDS to increase its effectiveness and to mitigate its potentially disruptive aspects. We discuss the timing and modalities used to deliver messages, implications of outlier-only versus individualized feedback, the need to consider possible unintended consequences of such feedback, regulations, sustainability, and portability among systems. We discuss statistical issues related to the appropriate evaluation of CDS efficacy. We provide a systematic review of the published literature (indexed in PubMed) of anesthesia CDS and offer 2 case studies of CDS interventions using AIMS data from our own institution illustrating the salient points. Because of the considerable expense and complexity of maintaining near real-time CDS systems, as compared with providing individual reports via e-mail after the fact, we suggest that if the same goal can be accomplished via delayed reporting versus immediate feedback, the former approach is preferable. Nevertheless, some processes require near real-time alerts to produce the desired improvement. Post hoc e-mail reporting from enterprise-wide electronic health record systems is straightforward and can be accomplished using system-independent pathways (e.g., via built-in e-mail support provided by the relational database management system). However, for some of these enterprise-wide systems, near real-time data access, necessary for CDS that generates concurrent alerts, has been challenging to implement.

A Narrative Review of Meaningful Use and Anesthesia Information Management Systems

The US federal government has enacted legislation for a federal incentive program for health care providers and hospitals to implement electronic health records. The primary goal of the Meaningful Use (MU) program is to drive adoption of electronic health records nationwide and set the stage to monitor and guide efforts to improve population health and outcomes. The MU program provides incentives for the adoption and use of electronic health record technology and, in some cases, penalties for hospitals or providers not using the technology. The MU program is administrated by the Department of Health and Human Services and is divided into 3 stages that include specific reporting and compliance metrics. The rationale is that increased use of electronic health records will improve the process of delivering care at the individual level by improving the communication and allow for tracking population health and quality improvement metrics at a national level in the long run. The goal of this narrative review is to describe the MU program as it applies to anesthesiologists in the United States. This narrative review will discuss how anesthesiologists can meet the eligible provider reporting criteria of MU by applying anesthesia information management systems (AIMS) in various contexts in the United States. Subsequently, AIMS will be described in the context of MU criteria. This narrative literature review also will evaluate the evidence supporting the electronic health record technology in the operating room, including AIMS, independent of certification requirements for the electronic health record technology under MU in the United States.

Effect of a cognitive aid on adherence to perioperative assessment and management guidelines for the cardiac evaluation of noncardiac surgical patients

BACKGROUND

The 2007 American College of Cardiologists/American Heart Association Guidelines on Perioperative Cardiac Evaluation and Care for Noncardiac Surgery is the standard for perioperative cardiac evaluation. Recent work has shown that residents and anesthesiologists do not apply these guidelines when tested. This research hypothesized that a decision support tool would improve adherence to this consensus guideline.

METHODS

Anesthesiology residents at four training programs participated in an unblinded, prospective, randomized, cross-over trial in which they completed two tests covering clinical scenarios. One quiz was completed from memory and one with the aid of an electronic decision support tool. Performance was evaluated by overall score (% correct), number of incorrect answers with possibly increased cost or risk of care, and the amount of time required to complete the quizzes both with and without the cognitive aid. The primary outcome was the proportion of correct responses attributable to the use of the decision support tool.

RESULTS

All anesthesiology residents at four institutions were recruited and 111 residents participated. Use of the decision support tool resulted in a 25% improvement in adherence to guidelines compared with memory alone (P < 0.0001), and participants made 77% fewer incorrect responses that would have resulted in increased costs. Use of the tool was associated with a 3.4-min increase in time to complete the test (P < 0.001).

CONCLUSIONS

Use of an electronic decision support tool significantly improved adherence to the guidelines as compared with memory alone. The decision support tool also prevented inappropriate management steps possibly associated with increased healthcare costs.

Reducing wastage of inhalation anesthetics using real-time decision support to notify of excessive fresh gas flow

BACKGROUND

Reduced consumption of inhalation anesthetics can be safely achieved by reducing excess fresh gas flow (FGF). In this study the authors describe the use of a real-time decision support tool to reduce excess FGF to lower, less wasteful levels.

METHOD

The authors applied a decision support tool called the Smart Anesthesia Manager™ (University of Washington, Seattle, WA) that analyzes real-time data from an Anesthesia Information Management System to notify the anesthesia team if FGF exceeds 1 l/min. If sevoflurane consumption reached 2 minimum alveolar concentration-hour under low flow anesthesia (FGF < 2 l/min), a second message was generated to increase FGF to 2 l/min, to comply with Food and Drug Administration guidelines. To evaluate the tool, mean FGF between surgical incision and the end of procedure was compared in four phases: (1) a baseline period before instituting decision rules, (2) Intervention-1 when decision support to reduce FGF was applied, (3) Intervention-2 when the decision rule to reduce flow was deliberately inactivated, and (4) Intervention-3 when decision rules were reactivated.

RESULTS

The mean ± SD FGF reduced from 2.10 ± 1.12 l/min (n = 1,714) during baseline to 1.60 ± 1.01 l/min (n = 2,232) when decision rules were instituted (P < 0.001). When the decision rule to reduce flow was inactivated, mean FGF increased to 1.87 ± 1.15 l/min (n = 1,732) (P < 0.001), with an increasing trend in FGF of 0.1 l/min/month (P = 0.02). On reactivating the decision rules, the mean FGF came down to 1.59 ± 1.02 l/min (n = 1,845). Through the Smart Anesthesia Messenger™ system, the authors saved 9.5 l of sevoflurane, 6.0 l of desflurane, and 0.8 l isoflurane per month, translating to an annual savings of $104,916.

CONCLUSIONS

Real-time notification is an effective way to reduce inhalation agent usage through decreased excess FGFs.

Clinical Decision Support for Perioperative Information Management Systems

Clinical decision support (CDS) systems are being used to optimize the increasingly complex care that our health care system delivers. These systems have become increasingly important in the delivery of perioperative care for patients undergoing cardiac, thoracic, and vascular procedures. The adoption of perioperative information management systems (PIMS) has allowed these technologies to enter the operating room and support the clinical work flow of anesthesiologists and operational processes. Constructing effective CDS systems necessitates an understanding of operative work flow and technical considerations as well as achieving integration with existing information systems. In this review, we describe published examples of CDS for PIMS, including support for cardiopulmonary bypass separation physiological alarms, β-blocker guideline adherence, enhanced revenue capture for arterial line placement, and detection of hemodynamic monitoring gaps. Although these and other areas are amenable to CDS systems, the challenges of latency and data reliability represent fundamental limitations on the potential application of these tools to specific types of clinical issues. Ultimately, we expect that CDS will remain an important tool in our efforts to optimize the quality of care delivered.

Communication latencies of wireless devices suitable for time-critical messaging to anesthesia providers

BACKGROUND

Rapid and reliable methods of text communication to mobile anesthesia care providers are important to patient care and to efficient operating room management. Anesthesia departments are implementing automated methods to send text messages to mobile devices for abnormal vital signs, clinical recommendations, quality of care, and compliance or billing issues. The most time-critical communications determine maximum acceptable latencies. We studied the reliability of several alphanumeric messaging systems to identify an appropriate technology for such use.

METHODS

Latencies between message initiation and delivery to 3 alphanumeric paging devices were measured over weeks. Two devices used Internet pathways outside the hospital's local network with an external paging vendor (SkyTel). The third device used only the internal hospital network (Zetron). Sequential cell phone text page latencies were examined for lag-1 autocorrelation using the runs test, with results binned by hour and by day. Message latencies subsequently were batched in successive 1-week bins for calculation of the mean and 99th percentiles of latencies. We defined acceptance criteria as a mean latency <30 seconds and no more than 1 in 200 pages (0.5%) having a latency longer than 100 seconds. Cell phone texting was used as a positive control to assure that the analysis was appropriate, because such devices have (known) poor reliability during high network activity.

RESULTS

There was substantial correlation among latencies for sequential cell phone text messages when binned by hours (P < 0.0001), but not by days (P = 0.61). The 2 devices using Internet pathways outside the hospital's network demonstrated unacceptable performance, with 1.3% and 33% of latencies exceeding 100 seconds, respectively. The device dependent only on the internal network had a mean latency of 8 seconds, with 100% of 40,200 pages having latencies <100 seconds. The findings suggest that the network used was the deciding factor.

CONCLUSIONS

Developers of anesthesia communication systems need to measure latencies of proposed communication pathways and devices used to deliver urgent messages to mobile users. Similar evaluation is relevant for text pagers used on an ad hoc basis for delivery of time-critical notifications. Testing over a period of hours to days is adequate only for disqualification of a candidate paging system, because acceptable results are not necessarily indicative of long-term performance. Rather, weeks of testing are required, with appropriate batching of pages for analysis.

Infection following operations on the central nervous system: deconstructing the myth of the sterile field

Neurosurgical patients are at a high risk for infectious sequelae following operations. For neurosurgery in particular, the risk of surgical site infection has a unique implication given the proximity of the CSF and the CNS. Patient factors contribute to some degree; for example, cancer and trauma are often associated with impaired nutritional status, known risk factors for infection. Additionally, care-based factors for infection must also be considered, such as the length of surgery, the administration of steroids, and tissue devascularization (such as a craniotomy bone flap). When postoperative infection does occur, attention is commonly focused on potential lapses in surgical “sterility.” Evidence suggests that the surgical field is not free of microorganisms. The authors propose a paradigm shift in the nomenclature of the surgical field from “sterile” to “clean.” Continued efforts aimed at optimizing immune capacity and host defenses to combat potential infection are warranted.

Smart Anesthesia Manager™ (SAM)--a real-time decision support system for anesthesia care during surgery

Anesthesia information management systems (AIMS) are being increasingly used in the operating room to document anesthesia care. We developed a system, Smart Anesthesia Manager™ (SAM) that works in conjunction with an AIMS to provide clinical and billing decision support. SAM interrogates AIMS database in near real time, detects issues related to clinical care, billing and compliance, and material waste. Issues and the steps for their resolution are brought to the attention of the anesthesia provider in real time through "pop-up" messages overlaid on top of AIMS screens or text pages. SAM improved compliance to antibiotic initial dose and redose to 99.3 ± 0.7% and 83.9 ± 3.4% from 88.5 ± 1.4% and 62.5 ± 1.6%, respectively. Beta-blocker protocol compliance increased to 94.6 ± 3.5% from 60.5 ± 8.6%. Inadvertent gaps (>15 min) in blood pressure monitoring were reduced to 34 ± 30 min/1000 cases from 192 ± 58 min/1000 cases. Additional billing charge capture of invasive lines procedures worth $144,732 per year and 1,200 compliant records were achieved with SAM. SAM was also able to reduce wastage of inhalation anesthetic agents worth $120,168 per year.

Development and validation of a novel stratification tool for identifying cancer patients at increased risk of surgical site infection

OBJECTIVE

To identify cancer-specific predictors of postoperative surgical site infection (SSI), and to develop a risk-stratification prognostic tool and compare its performance with traditional measures.

BACKGROUND

The incidence and risk factors for SSI in cancer patients are unknown; current risk-stratification tools are not cancer-specific.

METHODS

A prospective cohort study of patients undergoing elective operations (n = 503) at a tertiary cancer center was conducted. SSI was assessed using postdischarge active surveillance. Multivariate logistic regression analyses were performed to identify predictors of SSI, and β-coefficients were used to create a scoring system. The sum of these was used to create a Risk of Surgical Site Infection in Cancer (RSSIC) score. The RSSIC was validated using bootstrapping techniques, and its discrimination was compared with the National Nosocomial Infection Surveillance (NNIS) risk index.

RESULTS

The 30-day SSI incidence was 24%. Significant predictors of SSI included preoperative chemotherapy (OR = 1.94 [95% CI, 1.16-3.25]), clean-contaminated wounds (OR = 2.1 [95% CI, 1.24-3.55]), operative time ≥2 hours (OR = 1.75 [95% CI, 1.01-3.04]) and ≥4 hours (OR = 2.24 [95% CI, 1.22-4.1]), and surgical site: groin (OR = 4.65 [95% CI, 1.69-12.83]), and head/neck (OR = 0.12 [95% CI, 0.02-0.89]). The RSSIC score stratified patients into 4 risk strata for SSI. The performance of this score exceeded that of the NNIS score (AUC = 0.70 vs. 0.63, respectively; P = 0.01).

CONCLUSION

SSIs are common following cancer surgery. Preoperative chemotherapy, in addition to other common risk factors, was identified as a significant predictor for SSI in cancer patients. The RSSIC improves risk-stratification of cancer patients and identifies those that may benefit from more aggressive or novel preventive strategies.

Real-time alerts and reminders using information systems

Adoption of information systems throughout the hospital environment has enabled the development of real-time physiologic alerts and clinician reminder systems. These clinical tools can be made available through the deployment of anesthesia information management systems (AIMS). Creating usable alert systems requires understanding of technical considerations. Various successful implementations are reviewed, encompassing cost reduction, improved revenue capture, timely antibiotic administration, and postoperative nausea and vomiting prophylaxis. Challenges to the widespread use of real-time alerts and reminders include AIMS adoption rates and the difficulty in choosing appropriate areas and approaches for information systems support.

Anatomy of an anesthesia information management system

Anesthesia information management systems (AIMS) have become more prevalent as more sophisticated hardware and software have increased usability and reliability. National mandates and incentives have driven adoption as well. AIMS can be developed in one of several software models (Web based, client/server, or incorporated into a medical device). Irrespective of the development model, the best AIMS have a feature set that allows for comprehensive management of workflow for an anesthesiologist. Key features include preoperative, intraoperative, and postoperative documentation; quality assurance; billing; compliance and operational reporting; patient and operating room tracking; and integration with hospital electronic medical records.

Enhancing point of care vigilance using computers

Information technology has the potential to provide a tremendous step forward in perioperative patient safety. Through automated delivery of information through fixed and portable computer resources, clinicians may achieve improved situational awareness of the overall operation of the operating room suite and the state of individual patients in various stages of surgical care. Coupling the raw, but integrated, information with decision support and alerting algorithms enables clinicians to achieve high reliability in documentation compliance and response to care protocols. Future studies and outcomes analysis are needed to quantify the degree of benefit of these new components of perioperative information systems.

Prophylactic antibiotic practices for colectomy in Michigan

BACKGROUND

Although there are guidelines for prophylactic intravenous antibiotics in colorectal surgery, the objective of this study was to determine the extent to which these guidelines are followed.

METHODS

Twenty-seven Michigan hospitals participated in a colectomy quality-improvement project. In addition to the American College of Surgeons-National Surgical Quality Improvement Program variables, these hospitals collect 25 additional data points on processes of care for colectomy cases.

RESULTS

From 2007 to 2009, 3,002 patients had colectomy surgery and were eligible for analysis of antibiotic practices. Prophylactic antibiotics were given in 99.5% of cases; 81.4% of antibiotic choices were Surgical Care Improvement Project-compliant, and 90.8% of dosing was within 60 minutes before surgical incision. Recommended weight-adjusted dosing was performed in 56.8% of cases, and only 6.0% of antibiotics were redosed appropriately. Practices varied by hospital.

CONCLUSIONS

Prophylactic antibiotic use for colectomy in Michigan hospitals did not conform to recommended practices. These findings hold the promise for targeted quality-improvement initiatives.

Automatic notifications mediated by anesthesia information management systems reduce the frequency of prolonged gaps in blood pressure documentation

BACKGROUND

Arterial blood pressure (BP) measurement at least every 5 minutes is part of the American Society of Anesthesiologists' monitoring standard, but prolonged BP gaps in electronic anesthesia records have been noted. We undertook multicenter studies to determine the frequency of cases with at least 1 interval ≥10 minutes between successive BP measurements and then to ascertain whether educational feedback via an electronic, near real-time notification system alerting providers to the presence of such gaps would reduce their incidence.

METHODS

We evaluated 212,706 electronic anesthesia records from 3 large academic centers. We determined the fraction of cases with ≥10-minute BP monitoring gaps at baseline and did a root cause analysis to determine common causes for these lapses. We then designed and implemented automated systems at 2 of the hospitals to notify point-of-care providers immediately after such 10-minute gaps occurred and determined the subsequent impact of this feedback on BP gap incidence, compared with baseline.

RESULTS

At Hospital A, the notification system reduced the incidence of cases with at least 1 BP gap (1.48%± 0.19% SD vs 0.79% ± 0.36% SD, P < 0.0001). At Hospital B, the gap incidence was not significantly altered when notification was provided after a 10-minute gap had already occurred (2.72% ± 0.60% SD vs 2.45% ± 0.48% SD, P = 0.27), but the incidence was reduced when such notification was provided after 6 minutes without a BP reading (2.72% ± 0.60% SD vs 1.54% ± 0.19% SD, P < 0.0001). At Hospital C, where notification was not implemented, the baseline rate of BP gaps was consistent across the preintervention and follow-up periods (7.03% ± 1.27% SD vs 7.13% ± 0.11% SD, P = 0.74). Although monitors disconnected during position change was the most common identifiable cause of BP gaps, reasons for the missing BP measurements were often not documented. During a week when the electronic charting system was temporarily inoperable, no BP gaps were noted on a convenience sample of 500 paper records from Hospital A (99% upper confidence limit = 0.83%).

CONCLUSIONS

BP gaps of ≥10 minutes were common in electronic anesthesia records, and their incidence was reduced but not eliminated by near real-time feedback to providers. The American Society of Anesthesiologists' standard for BP documentation every 5 minutes might not be achievable with current practices and technology. Anesthesia information management systems users need to be cognizant of the potential for gaps in BP measurement, take steps to minimize their occurrence, and document an explanation when such failures occur.

Preventing surgical site infections after bariatric surgery: value of perioperative antibiotic regimens

Bariatric surgery for obesity has emerged as an effective and commonly used treatment modality. This paper reviews the surgical site infections (SSIs) that occur post bariatric surgery and SSI prevention. The benefit of bariatric surgery resulting in profound weight loss brings with it consequences in the form of postoperative complications that can have profound effects on morbidity and mortality in these patients. This paper sets out to define different types of SSIs that occur following bariatric surgery and to discuss existing literature on the critical aspects of SSI prevention and the appropriate use of surgical antimicrobial prophylaxis for bariatric surgery.

[Multimodal rehabilitation programme in elective colorectal surgery. Development of a clinical pathway and preliminary results]

INTRODUCTION

Multimodal rehabilitation programmes enhance recovery and may reduce the postoperative complication rate and hospital stay after elective colorectal surgery.

PATIENTS AND METHOD

A clinical pathway of multimodal rehabilitation in elective colorectal surgery was developed. After implementation, 90 consecutive patients received multimodal rehabilitation care from April to December 2006. Outcomes were compared with a control group of 134 patients receiving conventional care during 2005, just before the implementation of the new protocol. Demographics, surgical risk and type of surgery were similar in both groups.

RESULTS

With a clinical pathway of multimodal rehabilitation, on postoperative day 1 mobilization was accomplished in 68% of patients, early feeding in 52%, diet was well tolerated in 33% and intravenous fluids were stopped in 21% of patients. On postoperative day 5 predetermined discharge criteria were fulfilled in 82% of patients, although only 55% were discharged by postoperative day 6. Adherence to antibiotic prophylaxis protocol was better in the multimodal rehabilitation group (90% vs 41%; p < 0.001). Postoperative wound infection was lower in the multimodal rehabilitation group (13.3% vs 19.4%) with no statistical significance. Median hospital stay was significantly lower in the multimodal rehabilitation group (8.8 days vs 11.9 days; p = 0.03) with a mean of 6 days vs 9 days respectively.

CONCLUSIONS

A clinical pathway of multimodal rehabilitation in elective colorectal surgery reduces hospital stay without increasing morbidity rates.

Timely Administration of Prophylactic Antibiotics for Major Surgical Procedures

BACKGROUND

Prophylactic antibiotics (PA) given within 60 minutes before surgical incision decrease risk of subsequent surgical site infection. Nationwide quality improvement initiatives have focused on improving the proportion of patients who receive timely prophylactic antibiotics.

STUDY DESIGN

This is a cohort study of major surgical procedures performed in 108 Veterans Affairs hospitals between January and December 2005. Using data from the External Peer Review Program and the National Surgical Quality Improvement Program, we examined factors associated with timely PA administration. Univariate and multivariable analyses were performed.

RESULTS

There were 8,137 major surgical procedures: cardiac (2,664), hip and knee arthroplasty (3,603), colon (1,142), arterial vascular (606), and hysterectomy (122). Timely PA occurred in 76.2% of patients, 18.2% received them too early, and 5.4% received them too late. Early administration accounted for 79% of untimely PA. Differences in timeliness were seen by procedure type (68% to 87%; p < 0.0001), admission status (67% to 80%; p < 0.0001), and antibiotic class (65% to 89%; p < 0.0001). PA administration occurred in the operating room for 63.5% of patients. When PA administration occurred in the operating room, they were timely in 89% of patients, compared with 54% of patients where administration was outside the operating room (odds ratio, 7.74; 95% CI = 6.49 to 9.22).

CONCLUSIONS

Early PA administration accounted for the majority of inappropriately timed PA. Efforts to improve performance on this measure should focus on administering antibiotics in the operating room.