Traditional Operating Room Research Articles

Learning Through Simulated Independent Practice Leads to Better Future Performance in a Simulated Crisis Than Learning Through Simulated Supervised Practice

Background Anaesthetists may fail to recognize and manage certain rare intraoperative events. Simulation has been shown to be an effective educational adjunct to typical operating room-based education to train for these events. It is yet unclear, however, why simulation has any benefit. We hypothesize that learners who are allowed to manage a scenario independently and allowed to fail, thus causing simulated morbidity, will consequently perform better when re-exposed to a similar scenario. Methods Using a randomized, controlled, observer-blinded design, 24 first-year residents were exposed to an oxygen pipeline contamination scenario, either where patient harm occurred (independent group, n=12) or where a simulated attending anaesthetist intervened to prevent harm (supervised group, n=12). Residents were brought back 6 months later and exposed to a different scenario (pipeline contamination) with the same end point. Participants’ proper treatment, time to diagnosis, and non-technical skills (measured using the Anaesthetists’ Non-Technical Skills Checklist, ANTS) were measured. Results No participants provided proper treatment in the initial exposure. In the repeat encounter 6 months later, 67% in the independent group vs 17% in the supervised group resumed adequate oxygen delivery (P=0.013). The independent group also had better ANTS scores [median (interquartile range): 42.3 (31.5–53.1) vs 31.3 (21.6–41), P=0.015]. There was no difference in time to treatment if proper management was provided [602 (490–820) vs 610 (420–800) s, P=0.79]. Conclusions Allowing residents to practise independently in the simulation laboratory, and subsequently, allowing them to fail, can be an important part of simulation-based learning. This is not feasible in real clinical practice but appears to have improved resident performance in this study. The purposeful use of independent practice and its potentially negative outcomes thus sets simulation-based learning apart from traditional operating room learning.

The role of simulation in urological training – A quantitative study of practice and opinions

IntroductionOver the past few decades, simulation-based training has rapidly been adopted by many centres for effective technical and non-technical skills training, as a supplementary method to traditional operating room experience. The aim of this study is to assess the current practice in training and seek opinion regarding the future role of simulation in urological training. MethodsA cross sectional survey was designed and distributed amongst expert and trainee urological surgeons. The survey consisted of twenty-two questions that were split into three sections; Introduction (6), Technical Skills training in urology (10) and Non-technical skills training in urology (6). ResultsA total of 91 residents and 172 specialists completed the survey. In both groups, there was an agreed consensus that laparoscopic training and exposure was insufficient as only 21% of trainees and 23% of specialists believed that they had sufficient training in this area. Furthermore, both groups lacked simulation-based training in common urological procedures including nephrectomy (62%), cystoscopy (69–74%), ureteroscopy (47–59%), transurethral resection of the prostate (56–65%) and percutaneous renal surgery (76–73%). 90% of trainees and 70% of specialists believed (agreed and strongly agreed) that there is a role for non-technical skills simulation in urological training. ConclusionsSimulation training has been under-used thus far and trainees face an uphill challenge to enhance their skills and technical abilities in the operating room. Simulation is recommended by both trainees and specialists and may represent one of the solutions to the challenges of safe and effective urology procedural training.

Learning through simulated independent practice leads to better future performance in a simulated crisis than learning through simulated supervised practice

Anaesthetists may fail to recognize and manage certain rare intraoperative events. Simulation has been shown to be an effective educational adjunct to typical operating room-based education to train for these events. It is yet unclear, however, why simulation has any benefit. We hypothesize that learners who are allowed to manage a scenario independently and allowed to fail, thus causing simulated morbidity, will consequently perform better when re-exposed to a similar scenario. Using a randomized, controlled, observer-blinded design, 24 first-year residents were exposed to an oxygen pipeline contamination scenario, either where patient harm occurred (independent group, n=12) or where a simulated attending anaesthetist intervened to prevent harm (supervised group, n=12). Residents were brought back 6 months later and exposed to a different scenario (pipeline contamination) with the same end point. Participants' proper treatment, time to diagnosis, and non-technical skills (measured using the Anaesthetists' Non-Technical Skills Checklist, ANTS) were measured. No participants provided proper treatment in the initial exposure. In the repeat encounter 6 months later, 67% in the independent group vs 17% in the supervised group resumed adequate oxygen delivery (P=0.013). The independent group also had better ANTS scores [median (interquartile range): 42.3 (31.5-53.1) vs 31.3 (21.6-41), P=0.015]. There was no difference in time to treatment if proper management was provided [602 (490-820) vs 610 (420-800) s, P=0.79]. Allowing residents to practise independently in the simulation laboratory, and subsequently, allowing them to fail, can be an important part of simulation-based learning. This is not feasible in real clinical practice but appears to have improved resident performance in this study. The purposeful use of independent practice and its potentially negative outcomes thus sets simulation-based learning apart from traditional operating room learning.

Simulation-based learning of transesophageal echocardiography in cardiothoracic surgical trainees: A prospective, randomized study

ObjectivesThe Intercollegiate Surgical Curriculum now recommends that cardiac surgical trainees should be able to understand and interpret transesophageal echocardiography images. However, cardiac surgical trainees receive limited formal transesophageal echocardiography training. The objective of this study was to assess the impact of simulation-based teaching versus more traditional operating room teaching on transesophageal echocardiography knowledge in cardiac surgical trainees. MethodsA total of 25 cardiac surgical trainees with no formal transesophageal echocardiography learning experience were randomly assigned by computer to a study group receiving simulation-based transesophageal echocardiography teaching via the Heartworks (Inventive Medical, London, UK) simulator (n = 12) or a control group receiving transesophageal echocardiography teaching during elective cardiac surgery (n = 13). Each subject undertook a video-based test composed of 20 multiple choice questions on standard transesophageal echocardiography views before and after teaching. ResultsThere was no significant difference in the pretest scores between the 2 groups (P = .89). After transesophageal echocardiography teaching, subjects within each group demonstrated a statistically significant improvement in transesophageal echocardiography knowledge. Although the subjects within the simulation group outperformed their counterparts in the operating room teaching group in the post-test scores, this difference was not significant (P = .14). ConclusionsDespite the familiarity with transesophageal echocardiography images during surgery, subjects in the simulation group performed at least as well as those in the operating room group. Surgical trainees will benefit from formal transesophageal echocardiography teaching incorporated into their training via either learning method.

Anesthesia for bronchoscopy.

To discuss the recent advances in sedation and anesthesia for the practice of both flexible and rigid bronchoscopy, which are increasingly performed outside of the operating room by interventional pulmonologists and thoracic surgeons. Studies have recently documented the advantages of pharmacological sedatives and anesthetics for use in bronchoscopy. In particular, we review the increasing body of literature highlighting the advantages and benefits of propofol anesthesia for both flexible and rigid bronchoscopy. As our practice expands, relocation of appropriately triaged pulmonary interventional procedures including rigid bronchoscopy that were previously assigned to a traditional operating room setting improves provider flexibility, presents more cost-effective options while maintaining patient safety and satisfaction and reducing the time to recovery. Anesthesia practice has, therefore, shifted to caring for these sick patients outside the operating room and increasingly cooperation between anesthesiologist and proceduralist is required.

Comparing Air Delivery Methods in an Operating Theatre

Problem: The rate of surgical site infections (SSI) must be reduced. Hypothesis: Cleanroom air delivery mechanisms significantly reduce particle contamination and may help reduce SSI rates, increase positive clinical outcomes and improve energy cost savings. Objective: The primary objective of this study was to compare the ability of traditional operating room air delivery methods with those used in pharmaceutical and semiconductor cleanrooms to remove particle and microbial contamination from the sterile field.

Regional anesthesia for acute pain management in elderly patients

Normal aging is a process that involves loss of functional reserve of most organ systems of the human body, most significantly: cardiovascular, pulmonary, renal and nervous systems. Advancements in both surgery and anesthesia have made it possible to operate more safely on the elderly population and those older patients with multiple severe co-morbidities that were not routinely possible in the recent past. Regional anesthesiologist have proven to be instrumental in this regard as regional anesthetic/analgesic techniques may now permit surgeons to operate on the elderly who were not ideal surgical candidates or unable to tolerate general anesthesia. In addition, regional techniques provide alternatives that may optimize acute pain control and reduce the incidence of devastating side effects during the perioperative period such as: myocardial infarction, pulmonary embolism, pneumonia, and also increases the opportunity to allow for early ambulation and shorter hospital stays. These anesthetic options now provide the elderly patient with better medical care alternatives, but also can show a significant financial impact on health care system resources. Further understanding on aging molecular biology, physiology and pathophysiology, together with technical improvements of regional anesthetic techniques will continue to make it safer and more efficacious to operate on the elderly population with evidence of reduced morbidity and mortality. Although there is only anecdotal evidence that regional anesthesia(RA) improves survival, there is little doubt that RA plays an important role in perioperative optimization of pain control and decreases pain management complications as well as a reduction in healthcare costs. Beyond traditional operating rooms, elderly patients may increasingly benefit from RA and acute pain management in Emergency Rooms, medical clinics and even within a patient's home. Therefore, the focus of this review is directed toward geriatric patients and beneficial effects of RA on outcomes in the elderly.

The abdomen in "thoracoabdominal" cannot be ignored: abdominal compartment syndrome complicating extracorporeal life support.

Extracorporeal life support (ECLS) is an incredible life-saving measure that is being used ever more frequently in the care of the critically ill. Management of these patients requires extreme vigilance on the part of the care providers in recognizing and addressing the complications and challenges that may arise. We present a case of overt abdominal compartment syndrome (ACS) in a previously well young male on ECLS with a history of trauma, submersion, hypothermia, and no intra-abdominal injuries. The patient developed ACS soon after ECLS was initiated which resulted in drastically compromised flow rates. Taking into account the patient's critical status, an emergent laparotomy was performed in the intensive care unit which successfully resolved the ACS and restored ECLS flow. The patient had an unremarkable course following and was weaned off ECLS but unfortunately died from his original anoxic injury. This case highlights several salient points: first, care of patients on ECLS is challenging and multiple etiologies can affect our ability to manage these patients; second, intra-abdominal pressures should be monitored liberally in the critically ill, especially in patients on ECLS; third, protocols for emergent operative treatment outside of traditional operating rooms should be established and care providers should be prepared for these situations.

Improved Efficiency and Safety for EVAR with Utilization of a Hybrid Room

Access to a hybrid endovascular suite is touted as a necessity for advanced endovascular aneurysm repair (EVAR) to improve imaging accuracy and safety. Yet there remain little data documenting this intuitive advantage of a hybrid setup versus a traditional operating room (OR) utilizing a portable fluoroscopic unit (C-arm) for imaging. We hypothesized that standard elective EVAR performed in a hybrid suite would improve procedural efficiency and accuracy, as well minimize patient exposure to both contrast and radiation. We retrospectively reviewed a single attending surgeon's EVAR practice, which encompassed the transition to a hybrid endovascular suite (opened July 2010). Only consecutive abdominal aneurysms were included in the analysis to attempt to create a homogenous cohort. All emergent, aorto-uni-iliac (AUI), snorkel, fenestrated, or hybrid procedures were excluded. Standard variables evaluated and compared between the two study subgroups included fluoroscopy time, operative time, contrast use, stent-graft component utilization, complication rates, and short-term endoleaks. From January 2008 to August 2012, we performed 213 EVAR procedures for abdominal aortic aneurysms. After excluding emergent, AUI, snorkel, or hybrid procedures, we analyzed 109 routine EVARs. Fifty-eight consecutive cases were done in the OR with a C-arm until July 2010, and the last 51 cases were done in the hybrid room. Both groups were well matched in terms of demographics, aneurysm morphology, and procedural characteristics. No difference was found in terms of complication rates or operative mortality, although there was a trend towards decreased fluoroscopy time, type I/III endoleaks, and a number of additional endograft components utilized. Compared with patients repaired in the OR/C-arm, EVAR done in the hybrid room resulted in less total OR time and contrast usage (p<.05). Routine EVAR performed in a hybrid fixed-imaging suite affords greater efficiency and less harmful exposure of contrast and possible radiation to the patient. Accurate imaging quality and deployment is associated with less need for additional endograft components, which should lead to improved cost efficiency. Confirmation of these findings might be necessary in a randomized control trial to fully justify the capital expenditure necessary for hybrid endovascular suites.

Regional anesthesia for trauma outside the operating theatre

Pain management in the trauma patient can be challenging, especially outside the operating room setting. Traditional analgesics such as opioids and NSAIDs are also problematic in trauma care. In this review, the use of regional anesthetic techniques outside the operating theatre is discussed. Regional anesthesia is an increasing but still underutilized clinical tool for the trauma patient outside the operating room. Regional anesthesia provides well tolerated and effective analgesia and anesthesia for many indications in the trauma setting including hip fracture, reduction of joint dislocation, wound debridement, laceration repair, and multiple rib fractures. Its use can increase safety and resource allocation in emergency departments. Performance of peripheral nerve blocks, especially with ultrasound, is amenable in various medical environments with minimal training. Pain is often poorly managed in the trauma patient. In addition to quality analgesia, regional anesthesia provides a variety of benefits in the trauma setting outside the traditional operating room setting. While further utilization requires increased training and structural changes, existing tools such as ultrasound are removing barriers to the widespread use of peripheral nerve block techniques across multiple disciplines.

In‐office vasovagal response after rhinologic manipulation

Advances in endoscopic sinus surgery have led to a greater number of in-office procedures away from the traditional operating room setting. Rhinologists acting independently of anesthesiologists must be prepared for potential complications, such as vasovagal response (VVR), that may arise during in-office rhinologic manipulations. In this study, we review our experience with this condition and discuss risk factors and a management algorithm for in-office VVR. A retrospective analysis at a large tertiary referral center was performed on all patients undergoing in-office endoscopic procedures with rhinologic manipulation between July 2008 and June 2012. A total of 4973 patients underwent in-office endoscopic procedures and 8 patients with VVR were identified. Demographic data, diagnosis, procedure performed, and outcomes were reviewed. Eight patients out of 4973 (0.16%) experienced VVR during in-office endoscopic procedures. Seven (87.5%) of these 8 patients recovered from the VVR within 30 minutes and subsequently completed their scheduled procedure. One (12.5%) of the 8 patients did not fully recover after 30 minutes and was sent to the Emergency Department, where he was stabilized and subsequently discharged. The most common comorbidities in these 8 patients with VVR were hypercholesterolemia in 3 patients (37.5%), and hypertension and benign prostatic hyperplasia, each found in 2 patients (25.0%). Although the incidence of VVR during rhinologic procedures is low, rhinologists should be familiar with this condition and be prepared for its management.

Introduction to an office-based sinus surgery technique

The advent of balloon catheter dilation of the sinus ostia has advanced the ability of surgeons to manage chronic rhinosinusitis with tissue preservation and less-invasive techniques. This technology has provided the opportunity to perform endoscopic sinus surgery outside of the traditional operating room in a select patient population. This article describes the author's experience with a postmarket study assessing the feasibility of moving select endoscopic sinus surgeries with the use of balloon catheter dilation tools to the office setting. A discussion of anesthesia technique, patient selection, procedure room set-up, and equipment requirements is presented. The safety, tolerability, effectiveness, and cost of performing balloon catheter sinus dilation were evaluated in 10 patients in the author's practice. Effectiveness was assessed with both the sinonasal outcome test (SNOT-20) as well as change in Lund-Mackay computed tomography scan scores. Patient pain perception during the procedure was measured with a visual analogue scale. Patient outcomes were assessed at 1-, 4-, 24-, and 52-week follow-up to determine the durability of the surgical results. At 6 months, SNOT-20 symptom scores were significantly improved (0.89 vs 2.05 baseline), as were Lund-Mackay computed tomography scores, which decreased from a preoperative mean of 7.00 to 0.86. With respect to tolerability, 9 of 10 patients indicated that the procedure was well tolerated.

The neurointerventional procedure room of the future: predicting likely innovations in design and function

The Multispecialty Occupational Health Group, as part of their work, have considered likely characteristics of the neurointerventional surgery operating room of tomorrow. Such rooms will be distinguished by certain architectural...

IR challenges in the MSK system

As the capability of medical imaging equipment improves, and relatively new modalities such as cone beam CT with guidance becomes more widely available, the range and complexity of image guided orthopedic procedures continues to expand. Challenges include the predictable technical and anatomic issues, as well as the complex operational and political issues associated with moving and integrating an interventional radiology service into the traditional operating room environment.

Pediatric sedation/anesthesia outside the operating room

The demand of procedures performed on children outside the operating room setting often exceeds the capacity of anesthesia services. The number of children requiring sedation outside the traditional operating room is rapidly approaching the number of children requiring anesthesia in the operating room. We address some of the major issues and controversies in this continuously evolving field. Pediatric sedation continues to be a challenging field. Recently, the Society of Pediatric Sedation has been created. In the last year, important issues have been raised among pediatric sedation providers, keeping on feeding the debate within all the recognized experts. Why worry about nihil per os status? Is bispectral index useful as a sedation monitor? Should there be standards for simulation-based training of nonanesthesiologists for delivery of sedation? Is propofol well tolerated? Is dexmedetomidine a good choice for painful procedures? What is the role of etomidate? A standard approach (adequate preparation, clinical assessment of the child, fasting as required and right sedation plan) is mandatory to provide safety and efficiency. Sedation is a continuum, and it can be easy to advance from one level to the next and even reach a state of general anesthesia. Newer modalities such as end-tidal CO2 and, maybe, bispectral index monitoring are indeed enhancing the safety of procedural sedation and analgesia.

Preventing Health Care–Associated Infections

Statistics on health care–associated infections show that an estimated 1.7 million infections and 99,000 associated deaths occur each year in the United States alone. To provide safe patient care, implementing sound practices for infection prevention and control is essential, whether the procedure takes place in a traditional operating room, an ambulatory surgery center, or a physician’s office. In today’s perioperative setting, state-of-the art technology is available to assist the caregiver in providing safer care by protecting both the caregiver and the patient from contracting or spreading infection. The chain of infection involves a microorganism, a reservoir or source where the pathogen can survive and multiply (eg, blood), a mechanism of transmission (eg, contaminated hands), and a way for that microorganism to enter someone who is susceptible (ie, the host). The principles of infection prevention and control encompass guidelines not only for preventing and controlling the transmission of pathogens that may cause infections, but also for selecting the equipment or supplies needed to accomplish this goal. Here are some specific ways selecting the right equipment can help perioperative nurses prevent infection in their facilities.

Surgical Versus Percutaneous Care of Arteriovenous Access

Current clinical practice patterns have led to the performance of many percutaneous vascular procedures outside the traditional operating room and led to significant changes in management strategies for treatment of complications of arteriovenous access. In an effort to identify optimal treatment for failed or failing arteriovenous fistulas and grafts, percutaneous and surgical techniques are analyzed. Assessment of the functioning or failing access by physical examination is critical in determining proper treatment and in assessing outcomes of interventions. Percutaneous and surgical techniques are available for the treatment of AV access thrombosis and venous stenosis. Techniques for percutaneous thrombectomy and stent placement for venous stenosis and AV graft pseudoaneurysms are reviewed. Management of arterial inflow disease, steal syndrome and nonmaturing AV fistulas is also addressed. Overall, percutaneous techniques are assuming an increasingly important role in the treatment of failed or failing AV fistulas and grafts. Ongoing analysis of outcomes of both percutaneous and surgical interventions is necessary to continue to identify optimum treatment algorithms.

Cesarean Delivery in the Interventional Radiology Suite: A Novel Approach to Obstetric Hemostasis

The adjunctive use of interventional radiology procedures to minimize and control bleeding at the time of cesarean delivery has become increasingly common. These procedures require modern imaging equipment and supplies not available in traditional operating rooms. We describe three women who strongly desired continued reproductive function in clinical circumstances where postpartum hemorrhage and hysterectomy were likely. Cesarean delivery was performed in the interventional radiology suite after selective uterine artery balloon placement and/or embolotherapy, which successfully minimized blood loss during delivery. We propose that this novel surgical location is feasible, and may offer advantages in select patients.

The Evaluation of a Pulmonary Display to Detect Adverse Respiratory Events Using High Resolution Human Simulator

ObjectiveAuthors developed a picture-graphics display for pulmonary function to present typical respiratory data used in perioperative and intensive care environments. The display utilizes color, shape and emergent alerting to highlight abnormal pulmonary physiology. The display serves as an adjunct to traditional operating room displays and monitors. DesignTo evaluate the prototype, nineteen clinician volunteers each managed four adverse respiratory events and one normal event using a high-resolution patient simulator which included the new displays (intervention subjects) and traditional displays (control subjects). Between-group comparisons included (i) time to diagnosis and treatment for each adverse respiratory event; (ii) the number of unnecessary treatments during the normal scenario; and (iii) self-reported workload estimates while managing study events. MeasurementsTwo expert anesthesiologists reviewed video-taped transcriptions of the volunteers to determine time to treat and time to diagnosis. Time values were then compared between groups using a Mann-Whitney-U Test. Estimated workload for both groups was assessed using the NASA-TLX and compared between groups using an ANOVA. P-values < 0.05 were considered significant. ResultsClinician volunteers detected and treated obstructed endotracheal tubes and intrinsic PEEP problems faster with graphical rather than conventional displays (p < 0.05). During the normal scenario simulation, 3 clinicians using the graphical display, and 5 clinicians using the conventional display gave unnecessary treatments. Clinician-volunteers reported significantly lower subjective workloads using the graphical display for the obstructed endotracheal tube scenario (p < 0.001) and the intrinsic PEEP scenario (p < 0.03). ConclusionAuthors conclude that the graphical pulmonary display may serve as a useful adjunct to traditional displays in identifying adverse respiratory events.

Comparative study of 2 anesthesia techniques for pediatric refractive surgery

To compare the effectiveness of 2 anesthesia techniques for pediatric refractive surgery, propofol/fentanyl and ketamine/midazolam. Department of Ophthalmology, Magraby Eye & Ear Center, Muscat, Oman. This prospective clinical study was of children ranging in age range from 3 to 12 years who were followed for myopic anisometropia with amblyopia after failure of conventional correction or patients with superficial stromal corneal opacities. The children were scheduled to have refractive surgery under general anesthesia using propofol/fentanyl (P/F group) or ketamine/midazolam (K/M group). All drugs were administered intravenously. Thirty patients were included in the study and were divided randomly into 2 equal groups. Both groups were comparable in age, weight, sex, duration of anesthesia, and duration of surgery. Time to complete recovery was significantly shorter in the P/F group. The hemodynamic changes observed in this study were not of clinical significance. Three patients in the P/F group showed arterial oxygen (O2) saturation of less than 90% and supplemental O2 was given by nasal cannula. The incidence of postoperative agitation and vomiting was significantly higher in the K/M group, while the need for jaw thrust was significantly higher in the P/F group. The difference between both groups in the ophthalmologist satisfaction score was not significant. Propofol offered some advantages for brief procedures outside the traditional operating rooms. It is short acting, and has a rapid offset resulting in shorter postoperative monitoring and a smoother recovery profile. It has greater potential for respiratory depression than ketamine. Hence, greater vigilance and experience with the pediatric airway is recommended with its use.