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2.
J Am Coll Surg ; 233(6): 710-721, 2021 12.
Article in English | MEDLINE | ID: mdl-34530125

ABSTRACT

BACKGROUND: As operating room (OR) expenditures increase, faculty and surgical trainees will play a key role in curbing future costs. However, supply cost utilization varies widely among providers and, despite requirements for cost education during surgical training, little is known about trainees' comfort discussing these topics. To improve OR cost transparency, our institution began delivering real-time supply "receipts" to faculty and trainees after each surgical case. This study compares faculty and surgical trainees' perceptions about supply receipts and their effect on individual practice and cultural change. STUDY DESIGN: Faculty and surgical trainees (residents and fellows) from all adult surgical specialties at a large academic center were emailed separate surveys. RESULTS: A total of 120 faculty (30.0% response rate) and 119 trainees (35.7% response rate) completed the survey. Compared with trainees, faculty are more confident discussing OR costs (p < 0.001). Two-thirds of trainees report discussing OR costs with faculty as opposed to 77.0% of faculty who acknowledge having these conversations (p = 0.08). Both groups showed a strong commitment to reduce OR expenditures, with 87.3% of faculty and 90.0% of trainees expressing a responsibility to curb OR costs (p = 0.84). After 1 year of implementation, faculty continue to have high interest levels in supply receipts (82.4%) and many surgeons review them after each case (67.7%). In addition, 74.3% of faculty are now aware of how to lower OR costs and 52.5% have changed the OR supplies they use. Trainees, in particular, desire additional cost-reducing efforts at our institution (p < 0.001). CONCLUSIONS: Supply receipts have been well received and have led to meaningful cultural changes. However, trainees are less confident discussing these issues and desire a greater emphasis on OR cost in their curriculum.


Subject(s)
Faculty/statistics & numerical data , Internship and Residency/statistics & numerical data , Operating Rooms/economics , Specialties, Surgical/education , Surgeons/statistics & numerical data , Adult , Clinical Competence , Cost Savings , Humans , Internship and Residency/economics , Middle Aged , Operating Rooms/statistics & numerical data , Specialties, Surgical/economics , Surgeons/economics , Surgeons/education , Surgical Equipment/economics , Surgical Equipment/statistics & numerical data , Surveys and Questionnaires/statistics & numerical data
3.
World Neurosurg ; 142: e203-e209, 2020 10.
Article in English | MEDLINE | ID: mdl-32599181

ABSTRACT

OBJECTIVE: To evaluate access to the technologies and education needed to perform minimally invasive spine surgery (MISS) in Latin America. METHODS: We designed a questionnaire to evaluate surgeons' practice characteristics, access to different technologies, and training opportunities for MISS techniques. The survey was sent to members and registered users of AO Spine Latin from January 6-20, 2020. The major variables studied were nationality, specialty (orthopedics or neurosurgery), level of hospital (primary, secondary, tertiary), number of surgeries performed per year by the spine surgeon, types of spinal pathologies commonly managed, and number of MISS performed per year. Other variables involved specific access to different technologies: intraoperative fluoroscopy, percutaneous screws, cages, tubular retractors, microscopy, intraoperative computed tomography, neuronavigation imaging, and bone morphogenetic protein. Finally, participants were asked about main obstacles to performing MISS and their access to education on MISS techniques in their region. RESULTS: The questionnaires were answered by 306 members of AO Spine Latin America across 20 different countries. Most answers were obtained from orthopedic surgeons (57.8%) and those with over 10 years of experience (42.4%). Most of the surgeons worked in private practice (46.4%) and performed >50 surgeries per year (44.1%), but only 13.7% performed >50 MISS per year, mainly to manage degenerative pathologies (87.5%). Most surgeons always had access to fluoroscopy (79%). Only 26% always had access to percutaneous screws, 24% to tubular retractors, 34.3% to cages (anterior lumbar interbody fusion, lateral lumbar interbody fusion, or transforaminal lumbar interbody fusion), and 43% to microscopy. Regarding technologies, 71% reported never having access to navigation, 83% computed tomography, and 69.3% bone morphogenetic protein. The main limitations expressed for widely used MISS technologies were the high implant costs (69.3%) and high navigation costs (49.3%). Most surgeons claimed access to online education activities (71%), but only 44.9% reported access to face-to-face events and 28.8% to hands-on activities, their limited access largely because the courses were expensive (62.7%) or few courses were available on MISS in their region (51.3%). CONCLUSIONS: Most surgeons in Latin America have limited resources to perform MISS, even in private practice. The main constraints are implant costs, access to technologies, and limited face-to-face educational opportunities.


Subject(s)
Education, Distance/statistics & numerical data , Minimally Invasive Surgical Procedures/education , Neuronavigation/statistics & numerical data , Neurosurgical Procedures/education , Orthopedic Procedures/education , Surgical Equipment/statistics & numerical data , Bone Morphogenetic Proteins , Fluoroscopy/statistics & numerical data , Humans , Intraoperative Care/statistics & numerical data , Latin America , Microscopy/statistics & numerical data , Minimally Invasive Surgical Procedures/instrumentation , Neurosurgery/education , Neurosurgical Procedures/instrumentation , Orthopedic Procedures/instrumentation , Orthopedics/education , Surveys and Questionnaires , Technology , Tomography, X-Ray Computed/statistics & numerical data
4.
Lakartidningen ; 1162019 Feb 26.
Article in Swedish | MEDLINE | ID: mdl-31192418

ABSTRACT

The Västra Götaland region carried out a project to develop resource-efficient surgeries using standardized hip prosthesis surgery as case. The purpose was to reduce and streamline the use of consumables and thus reduce the climate impact. At the surgery departments of three hospitals, significant variations were found in the supply and use of consumables during operations for total hip replacement (5.0-6.6 kg dry weight/operation). The major part of disposables consisted of surgery textiles, and choosing fossil-free products has the beneficial impact on a carbon footprint. Customized surgical procedure trays significantly reduce the number of packages and result in reduced work load for the staff. However, since there is a long term trend to increase the use of consumables in such sets, there is a need of continuous monitoring of such choices. In summary, a critical review of routines for care and use of materials is a powerful tool for streamlining healthcare and reducing its climate impact.


Subject(s)
Arthroplasty, Replacement, Hip , Carbon Footprint , Disposable Equipment/statistics & numerical data , Surgical Equipment/statistics & numerical data , Arthroplasty, Replacement, Hip/standards , Arthroplasty, Replacement, Hip/statistics & numerical data , Humans , Sustainable Development , Sweden
5.
AORN J ; 109(4): 452-462, 2019 04.
Article in English | MEDLINE | ID: mdl-30919433

ABSTRACT

Reprocessing single-use surgical supplies and devices is an option for hospitals and ambulatory surgery centers (ASCs). The US Federal Government has recognized the practice since 2000, and regulatory oversight has increased dramatically since that time. Reprocessing single-use devices is safe when personnel use approved methods, and health care facilities can experience significant cost savings by participating in this type of initiative. This article explores reprocessing and its benefits in ASCs, including a review of the oversight that the US Food and Drug Administration currently has for reprocessing and a discussion of the results of studies pertaining to this practice. The article also describes some issues that ASC leaders need to be aware of when considering the implementation of a reprocessing program. Single-use device reprocessing can be an effective tool for ASC leaders to conserve and manage resources.


Subject(s)
Ambulatory Care Facilities/standards , Disposable Equipment/standards , Equipment Reuse/standards , Health Personnel/education , Practice Guidelines as Topic , Safety Management/standards , Surgical Equipment/standards , Adult , Ambulatory Care Facilities/statistics & numerical data , Curriculum , Disposable Equipment/statistics & numerical data , Education, Medical, Continuing , Equipment Reuse/statistics & numerical data , Female , Humans , Male , Middle Aged , Surgical Equipment/statistics & numerical data , United States
6.
Obes Surg ; 28(10): 3352-3359, 2018 10.
Article in English | MEDLINE | ID: mdl-30030727

ABSTRACT

BACKGROUND: While there are various techniques to create the gastrojejunostomy during a laparoscopic Roux-en-Y gastric bypass (LRYGB), many surgeons prefer using a circular stapler. One drawback of this method, however, is the higher incidence of surgical site infections (SSIs). To investigate the effect of a dual ring wound protector on SSIs during LRYGB. METHODS: In April 2016, our bariatric surgical group implemented an intervention whereby a dual ring wound protector in conjunction with a conical EEA stapler introducer was used when creating the gastrojejunostomy. SSIs from pre- and post-intervention were compared using Fisher's exact test. Only LRYGBs performed with a circular stapler were included in our analysis. Student's t test and χ2 were used to compare pre- and post-intervention groups with respect to demographics and co-morbidities. RESULTS: Between April 2015 and January 31st, 2017, our surgeons performed 158 LRYGBs using a circular stapler for the gastrojejunostomy. There were 84 patients (53%) in the pre-intervention group and 74 (47%) in the post-intervention group. The pre- and post-intervention groups were not statistically different. The SSI rate for the pre-intervention group was 9.5% while the SSI rate was 1.35% in the post-intervention group (p = 0.0371). The use of a dual ring wound protector for LRYGBs with circular stapled gastrojejunostomy was associated with an 86% relative risk reduction in SSIs. CONCLUSION: Using a dual ring wound protector in conjunction with a conical EEA introducer for LRYGBs with circular stapled gastrojejunostomy significantly decreased SSIs.


Subject(s)
Gastric Bypass/adverse effects , Laparoscopy/adverse effects , Obesity, Morbid/surgery , Protective Devices , Surgical Equipment , Surgical Wound Infection/prevention & control , Sutures , Adult , Equipment Contamination/prevention & control , Equipment Design , Female , Gastric Bypass/instrumentation , Gastric Bypass/methods , Gastric Bypass/statistics & numerical data , Humans , Incidence , Laparoscopy/instrumentation , Laparoscopy/methods , Laparoscopy/statistics & numerical data , Male , Middle Aged , Obesity, Morbid/epidemiology , Protective Devices/statistics & numerical data , Retrospective Studies , Surgical Equipment/adverse effects , Surgical Equipment/microbiology , Surgical Equipment/statistics & numerical data , Surgical Instruments/adverse effects , Surgical Instruments/microbiology , Surgical Instruments/statistics & numerical data , Surgical Stapling/adverse effects , Surgical Stapling/instrumentation , Surgical Stapling/methods , Surgical Stapling/statistics & numerical data , Surgical Wound Infection/epidemiology , Sutures/adverse effects , Sutures/microbiology , Sutures/statistics & numerical data
7.
J Healthc Qual ; 40(3): e46-e53, 2018.
Article in English | MEDLINE | ID: mdl-28346244

ABSTRACT

INTRODUCTION: We analyze the assembly of surgical trays in a hospital's sterile services department. The department assembles 520 different tray setups. However, tray assembly times are unknown, imposing a challenge to production planners. To respond to demand, workers from other departments are often called, leading to higher operational costs and more frequent quality problems due to workers' poor training and inconsistency. METHODS: Conducting traditional time-motion studies is infeasible in such a high variety production setting. Thus, we used design of experiments to optimize the data acquisition. Assembly times of 36 trays were sampled using a 2-factor nested factorial design. Through regression analysis, we built a model to estimate completion times of trays not sampled in the experiment. RESULTS: A prediction model with 90.8% accuracy was obtained from the experimental data. The model was validated with assembly times from several trays not included in the experiment. Predicted assembly times had an absolute error of 7.83% on average compared with observed assembly times. CONCLUSIONS: Design of experiments and regression analysis combined were able to optimize time data acquisition using a small sample of trays, resulting in a model that predicted assembly times within an acceptable margin of error.


Subject(s)
Perioperative Care/methods , Perioperative Care/statistics & numerical data , Surgical Equipment/statistics & numerical data , Time and Motion Studies , Total Quality Management/methods , Total Quality Management/statistics & numerical data , Humans
8.
J Am Coll Surg ; 226(1): 37-45.e1, 2018 01.
Article in English | MEDLINE | ID: mdl-29056314

ABSTRACT

BACKGROUND: With increased scrutiny on the quality and cost of health care, surgeons must be mindful of their outcomes and resource use. We evaluated surgeon-specific intraoperative supply cost (ISC) for pancreaticoduodenectomy and examined whether ISC was associated with patient outcomes. STUDY DESIGN: Patients undergoing open pancreaticoduodenectomy between January 2012 and March 2015 were included. Outcomes were tracked prospectively through postoperative day 90, and ISC was defined as the facility cost of single-use surgical items and instruments, plus facility charges for multiuse equipment. Multivariate logistic regression was used to test associations between ISC and patient outcomes using repeated measures at the surgeon level. RESULTS: There were 249 patients who met inclusion criteria. Median ISC was $1,882 (interquartile range [IQR] $1,497 to $2,281). Case volume for 6 surgeons ranged from 18 to 66. Median surgeon-specific ISC ranged from $1,496 to $2,371. Greater case volume was associated with decreased ISC (p < 0.001). Overall, ISC was not predictive of postoperative complications (p = 0.702) or total hospitalization expenditures (p = 0.195). At the surgeon level, surgeon-specific ISC was not associated with the surgeon-specific incidence of severe complication or any wound infection (p > 0.227 for both), but was associated with delayed gastric emptying (p = 0.004) and postoperative pancreatic fistula (p < 0.001). CONCLUSIONS: In a single-institution cohort of 249 pancreaticoduodenectomies, high-volume surgeons tended to be low-cost surgeons. Across the cohort, ISC was not associated with outcomes. At the surgeon level, associations were noted between ISC and complications, but these may be attributable to unmeasured differences in the postoperative management of patients. These findings suggest that quality improvement efforts to restructure resource use toward more cost-effective practice may not affect patient outcomes, although prospective monitoring of safety and effectiveness must be of the utmost concern.


Subject(s)
Pancreaticoduodenectomy/economics , Surgeons/statistics & numerical data , Surgical Equipment/economics , Cost-Benefit Analysis , Health Care Costs/statistics & numerical data , Humans , Pancreaticoduodenectomy/instrumentation , Pancreaticoduodenectomy/statistics & numerical data , Surgeons/economics , Surgical Equipment/statistics & numerical data
9.
Ear Nose Throat J ; 96(9): 366-371, 2017 Sep.
Article in English | MEDLINE | ID: mdl-28931190

ABSTRACT

The purposes of this study were to determine if use of a powered drill or trainee involvement during tympanoplasty is associated with a decline in sensorineural hearing, as well as to examine whether trainee involvement affected tympanic membrane (TM) closure rates. This study was a chart review (February 2006 to October 2011) of 172 pediatric otolaryngology patients undergoing type I tympanoplasty for TM perforation of any etiology at a tertiary-care pediatric otolaryngology practice. Data collected included air conduction (AC) at 250 to 8,000 Hz, speech reception thresholds, bone conduction (BC) at 500 to 4,000 Hz, and air-bone gap (ABG) at 500 to 4,000 Hz. Rates of surgical success did not change significantly if a trainee assisted during surgery (69.6% with an assistant vs. 77.4% without; p = 0.297). AC hearing was not found to be significantly different between the two groups preoperatively or postoperatively at 250, 500, 1,000, 2,000, 4,000, or 8,000 Hz (p > 0.05). There were no significant differences in AC hearing outcomes between patients in whom a surgical drill was used and those in whom no drill was used (p > 0.05). BC and ABG did not change significantly at any frequency (p > 0.05). In conclusion, no correlation between high-frequency hearing loss and use of a powered drill for canalplasty during type I tympanoplasty was found in this pediatric population. No significant difference was found in surgical success rates or AC hearing outcomes when a surgical trainee was present.


Subject(s)
Hearing Loss, Sensorineural/etiology , Medical Staff, Hospital/statistics & numerical data , Postoperative Complications/etiology , Surgical Equipment/adverse effects , Tympanoplasty/statistics & numerical data , Adolescent , Audiometry, Pure-Tone , Auditory Threshold , Child , Child, Preschool , Female , Hearing , Humans , Male , Postoperative Period , Retrospective Studies , Surgical Equipment/statistics & numerical data , Treatment Outcome , Tympanic Membrane Perforation/physiopathology , Tympanic Membrane Perforation/surgery , Tympanoplasty/instrumentation , Tympanoplasty/methods
10.
Infect Control Hosp Epidemiol ; 37(1): 80-7, 2016 Jan.
Article in English | MEDLINE | ID: mdl-26434696

ABSTRACT

OBJECTIVE To use a unique multicomponent administrative data set assembled at a large academic teaching hospital to examine the risk of percutaneous blood and body fluid (BBF) exposures occurring in operating rooms. DESIGN A 10-year retrospective cohort design. SETTING A single large academic teaching hospital. PARTICIPANTS All surgical procedures (n=333,073) performed in 2001-2010 as well as 2,113 reported BBF exposures were analyzed. METHODS Crude exposure rates were calculated; Poisson regression was used to analyze risk factors and account for procedure duration. BBF exposures involving suture needles were examined separately from those involving other device types to examine possible differences in risk factors. RESULTS The overall rate of reported BBF exposures was 6.3 per 1,000 surgical procedures (2.9 per 1,000 surgical hours). BBF exposure rates increased with estimated patient blood loss (17.7 exposures per 1,000 procedures with 501-1,000 cc blood loss and 26.4 exposures per 1,000 procedures with >1,000 cc blood loss), number of personnel working in the surgical field during the procedure (34.4 exposures per 1,000 procedures having ≥15 personnel ever in the field), and procedure duration (14.3 exposures per 1,000 procedures lasting 4 to <6 hours, 27.1 exposures per 1,000 procedures lasting ≥6 hours). Regression results showed associations were generally stronger for suture needle-related exposures. CONCLUSIONS Results largely support other studies found in the literature. However, additional research should investigate differences in risk factors for BBF exposures associated with suture needles and those associated with all other device types. Infect. Control Hosp. Epidemiol. 2015;37(1):80-87.


Subject(s)
Blood Loss, Surgical , Body Fluids , Needlestick Injuries/epidemiology , Occupational Exposure/statistics & numerical data , Occupational Injuries/epidemiology , Blood Volume , General Surgery/statistics & numerical data , Humans , North Carolina/epidemiology , Operating Rooms , Operative Time , Orthopedics/statistics & numerical data , Personnel, Hospital/statistics & numerical data , Retrospective Studies , Risk Factors , Surgical Equipment/statistics & numerical data
11.
Injury ; 46(12): 2502-6, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26319207

ABSTRACT

The presence of a cortical fragment blocking the intramedullary canal is a challenging problem in the management of comminuted long bone fractures. Recognizing this problem and removing the cortical fragment are crucial to prevent complications from occurring. We present a simple technique to remove intramedullary fragments from within the canal to allow for safe nailing.


Subject(s)
Fracture Fixation, Intramedullary/methods , Fractures, Comminuted/complications , Surgical Equipment/statistics & numerical data , Tibial Fractures/complications , Adult , Bone Nails , Fracture Fixation, Intramedullary/instrumentation , Fractures, Comminuted/surgery , Humans , Male , Middle Aged , Practice Guidelines as Topic , Tibial Fractures/surgery , Treatment Outcome
13.
Surgery ; 151(2): 153-61, 2012 Feb.
Article in English | MEDLINE | ID: mdl-21944837

ABSTRACT

BACKGROUND: The malfunctioning of surgical instruments may lead to serious medical accidents. Limited information is available on the risk of defective instruments. The purpose of these study is to demonstrate the features of defective surgical instruments, to establish a strategy to reduce the risk of medical accidents. METHODS: We studied 19,474 consecutive operations during 2007 to 2009 at our hospital. The data on defective instruments were collected based on the orders for repair of broken instruments and reports of near-miss incidents. Adverse events caused by defective instruments were also identified from reports of near-miss incidents. RESULTS: A total of 1,775 nonfunctioning instruments were identified during the study period. Of these, 112 were found during operation. More than half of the defective instruments were tissue-grasping instruments, bone-boring/gnawing instruments, and instruments for endoscopic surgery. Wearing out and inappropriate use of instruments were 2 major causes of defects. The rest of the causes consisted of inadequate inspection and factory defects. Two near-miss incidents (incidence 10 per 100,000 operations) in endoscopic surgery were potentially critical, but the postoperative course was uneventful in each patient. The incidence of defects adjusted by the number of operations demonstrated that bone-boring/gnawing instruments and instruments for endoscopic surgery tend to be broken during surgery. Without inspection by the manufacturer, the incidence would be much higher for endoscopic instruments. CONCLUSION: Our data suggest that the appropriate use and adequate inspection of particular types of instruments are key for reducing the risk of medical accidents caused by defective surgical instruments.


Subject(s)
Accident Prevention/methods , Equipment Failure , Medical Errors/prevention & control , Surgical Equipment/adverse effects , Equipment Failure/statistics & numerical data , Humans , Incidence , Retrospective Studies , Risk Management , Surgical Equipment/statistics & numerical data
14.
Minim Invasive Ther Allied Technol ; 20(5): 267-75, 2011 Sep.
Article in English | MEDLINE | ID: mdl-21082904

ABSTRACT

Ergonomic problems of surgical lighting systems have been indicated by surgeons; however, the underlying causes are not clear. The aim of this study is to assess the problems in detail. Luminaire use during 46 hours of surgery was observed and quantified. Furthermore, a questionnaire on perceived illumination of and usability problems with surgical luminaires was issued among OR-staff in 13 hospitals. The results showed that every 7.5 minutes a luminaire action (LA) takes place, intended to reposition the luminaire. Of these LAs, 74% were performed by surgeons and residents. For 64% of these LAs the surgical tasks of the OR-staff were interrupted. The amount of LAs to obtain a well-lit wound, the illumination level, shadows, and the illumination of deep wounds were most frequently indicated lighting aspects needing improvement. Different kinematic aspects of the pendant system of the lights that influence usability were also mentioned: High forces for repositioning, ease of focusing and aiming, ease of moving, collisions of the luminaire, entangling of pendant arms, and maneuverability. Based on these results conclusions regarding the improvement of surgical lighting systems are formulated. Focus for improvements should be on minimizing the need for repositioning the luminaire, and on minimizing the effort for repositioning.


Subject(s)
Lighting/instrumentation , Operating Rooms/statistics & numerical data , Surgical Equipment/statistics & numerical data , Equipment Design , Ergonomics , Female , Humans , Lighting/statistics & numerical data , Male , Surgical Procedures, Operative/methods , Surveys and Questionnaires
15.
AORN J ; 91(6): 711-21, 2010 Jun.
Article in English | MEDLINE | ID: mdl-20510944

ABSTRACT

Medical waste is a necessary by-product of any hospital environment; however, the majority of regulated medical waste is produced in the OR from the use of disposable surgical supplies (eg, drapes, gowns, basins, gloves, sponges). We conducted a concept comparison project in the ORs of two large medical centers in Bethesda, Maryland, and Washington, DC, to evaluate the effects of using reusable surgical basins, gowns, and table and Mayo stand covers in place of disposable products. Survey results indicated that surgeons and surgical technologists found the reusable products to be preferable to the disposable products currently in use. In addition, using reusable products provided a means to decrease regulated medical waste generated in the OR by an average of 65% as well as reduce the cost of waste disposal. AORN recommends evaluating the environmental effects of using reusable, reposable, and disposable products; our findings provide evidence that may be useful to surgical facilities that seek to adopt a "green" approach.


Subject(s)
Conservation of Natural Resources/methods , Disposable Equipment , Equipment Reuse , Medical Waste/prevention & control , Operating Rooms/organization & administration , Surgical Equipment , Attitude of Health Personnel , Bedding and Linens/statistics & numerical data , Cost Savings , Disposable Equipment/statistics & numerical data , District of Columbia , Durable Medical Equipment/statistics & numerical data , Equipment Reuse/statistics & numerical data , Humans , Inventories, Hospital/organization & administration , Maryland , Medical Waste/statistics & numerical data , Nursing Evaluation Research , Operating Room Nursing/organization & administration , Protective Clothing/supply & distribution , Refuse Disposal/methods , Refuse Disposal/statistics & numerical data , Surgical Equipment/statistics & numerical data , Surveys and Questionnaires
17.
Am J Rhinol Allergy ; 23(2): 232-6, 2009.
Article in English | MEDLINE | ID: mdl-19401056

ABSTRACT

BACKGROUND: The incidence of nasolabial cysts is very low. Simple excision through a sublabial approach is the treatment of choice. The aim of this study was to evaluate the microdebrider as a tool in transnasal endoscopic marsupialization for nasolabial cysts and compare it with conventional instruments and a sublabial approach for cyst removal. METHODS: Retrospective chart review of 30 patients (31 cysts) with a mean age of 46.9 years received surgical treatments for nasolabial cysts. We performed three types of surgical procedures including the sublabial approach (10 cysts), conventional transnasal marsupialization (13 cysts), and microdebrider-assisted marsupialization (8 cysts). RESULTS: Patients that received surgery with the sublabial approach experienced significant increases in operation time, blood loss, and hospitalized time compared with those treated with transnasal marsupialization. However, the number of postoperative stoma stenoses was higher for conventional transnasal marsupialization (two cases). No recurrences or other postoperative complications were found during the follow-up. CONCLUSION: The transnasal marsupialization of nasolabial cysts has remarkable benefits compared with sublabial cyst excision during operation. Microdebriders can be used safely and effectively in endoscopic marsupialization without stoma stenosis.


Subject(s)
Cysts/surgery , Endoscopy/methods , Nose Diseases/surgery , Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Cysts/pathology , Cysts/physiopathology , Debridement/instrumentation , Endoscopy/statistics & numerical data , Evaluation Studies as Topic , Female , Humans , Infant , Infant, Newborn , Male , Middle Aged , Nose Diseases/pathology , Nose Diseases/physiopathology , Surgical Equipment/statistics & numerical data , Time Factors , Treatment Outcome
18.
Curr Opin Anaesthesiol ; 22(2): 242-8, 2009 Apr.
Article in English | MEDLINE | ID: mdl-19295431

ABSTRACT

PURPOSE OF REVIEW: Supply expenses occupy an ever-increasing portion of the expense budget in today's increasingly technologically complex operating rooms. Yet, little has been studied and published in the anesthesia literature. This review attempts to bring the topic of supply management to anesthesiologists, who play a significant role in operating room management. RECENT FINDINGS: Little investigative work has been performed on supply management. Anecdotal reports suggest the benefits of a perpetual inventory system over a periodic inventory system. A perpetual inventory system uses utilization data to update inventory on hand continually and this information is linked to purchasing and restocking, whereas a periodic inventory system counts inventory at some regular intervals (such as annually) and uses average utilization to set par levels. SUMMARY: On the basis of application of operational management concepts, ways of taking advantage of a perpetual inventory system to achieve savings in supply expenses are outlined. These include linking the operating room scheduling and supply order system, distributor-driven just-in-time delivery of case carts, continual updating of preference lists based on utilization patterns, increasing inventory turnovers, standardizing surgical practices, and vendor consignment of high unit-cost items such as implants. In addition, Lean principles of visual management and elimination of eight wastes may be applicable to supply management.


Subject(s)
Materials Management, Hospital/economics , Operating Rooms/economics , Surgical Equipment/supply & distribution , Commerce , Cost Control/methods , Forms and Records Control , Humans , Inventories, Hospital/economics , Inventories, Hospital/methods , Materials Management, Hospital/methods , Operating Room Nursing , Operating Rooms/organization & administration , Surgical Equipment/economics , Surgical Equipment/statistics & numerical data , United States
19.
Comput Methods Biomech Biomed Engin ; 12(2): 239-48, 2009 Apr.
Article in English | MEDLINE | ID: mdl-19012064

ABSTRACT

In vivo surgical robot wheel and tissue interaction was studied using a nonlinear finite element model. A liver material model, derived from laboratory experiments, was implemented as a viscoelastic material. A finite element simulation of this laboratory test confirmed the accuracy of the liver material model. This material model was then used as the tissue model to study wheel performance. A helical wheel moving on the liver model was used to replicate laboratory experiments that included several different slip ratios and applied loads. The drawbar force produced in this model showed good agreement with the physical tests. These results have provided the baseline for studying how changes in wheel geometry, such as tread height, tread spacing and wheel diameter, affect drawbar force and ultimately wheel performance. These results will be used in future surgical robot wheel designs.


Subject(s)
Robotics/instrumentation , Surgery, Computer-Assisted/instrumentation , Surgical Equipment , Animals , Biomechanical Phenomena , Biomedical Engineering , Cattle , Computer Simulation , Elasticity , Equipment Design , Finite Element Analysis , In Vitro Techniques , Liver/physiology , Motion , Nonlinear Dynamics , Robotics/statistics & numerical data , Surgery, Computer-Assisted/statistics & numerical data , Surgical Equipment/statistics & numerical data , Viscosity
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