Identifying Strategies to Reduce Low-Value Preoperative Testing for Low-Risk Procedures: a Qualitative Study of Facilities with High or Recently Improved Levels of Testing

BACKGROUND

Healthcare agencies and perioperative professional organizations recommend avoiding preoperative screening tests for low-risk surgical procedures. However, low-value preoperative tests are still commonly ordered even for generally healthy patients and active strategies to reduce this testing have not been adequately described.

OBJECTIVE

We sought to learn from hospitals with either high levels of testing or that had recently reduced use of low-value screening tests (aka "delta sites") about reasons for testing and active deimplementation strategies they used to effectively improve practice.

DESIGN

Qualitative study of semi-structured telephone interviews.

PARTICIPANTS

We identified facilities in the US Veterans Health Administration (VHA) with high or recently improved burden of potentially low-value preoperative testing for carpal tunnel release and cataract surgery. We recruited perioperative clinicians to participate.

APPROACH

Questions focused on reasons to order preoperative screening tests for patients undergoing low-risk surgery and, more importantly, what strategies had been successfully used to reduce testing. A framework method was used to identify common improvement strategies and specific care delivery innovations.

KEY RESULTS

Thirty-five perioperative clinicians (e.g., hand surgeons, ophthalmologists, anesthesiologists, primary care providers, directors of preoperative clinics, nurses) from 29 VHA facilities participated. Facilities that successfully reduced the burden of low-value testing shared many improvement strategies (e.g., building consensus among stakeholders; using evidence/norm-based education and persuasion; clarifying responsibility for ordering tests) to implement different care delivery innovations (e.g., pre-screening to decide if a preop clinic evaluation is necessary; establishing a dedicated preop clinic for low-risk procedures).

CONCLUSIONS

We identified a menu of common improvement strategies and specific care delivery innovations that might be helpful for institutions trying to design their own quality improvement programs to reduce low-value preoperative testing given their unique structure, resources, and constraints.

Mixed Esophageal Disease (MED): A New Concept

We define mixed esophageal disease (MED) as a disorder of esophageal structure and/or function that produces variable signs or symptoms, simulating-fully or in part other well-defined esophageal conditions, such as gastroesophageal reflux disease, esophageal motility disorders, or even neoplasia. The central premise of the MED concept is that of an overlap syndrome that incorporates selected clinical, endoscopic, imaging, and functional features that alter the patient's quality of life and affect natural history, prognosis, and management. In this article, we highlight MED scenarios frequently encountered in medico-surgical practices worldwide, posing new diagnostic and therapeutic challenges. These, in turn, emphasize the need for better understanding and management, aiming towards improved outcomes and prognosis. Since MED has variable and sometimes time-evolving clinical phenotypes, it deserves proper recognition, definition, and collaborative, multidisciplinary approach, be it pharmacologic, endoscopic, or surgical, to optimize therapeutic outcomes, while minimizing iatrogenic complications. In this regard, it is best to define MED early in the process, preferably by teams of clinicians with expertise in managing esophageal diseases. MED is complex enough that is increasingly becoming the subject of virtual, multi-disciplinary, multi-institutional meetings.

Frequency and costs of low-value preoperative tests for patients undergoing low-risk procedures in the veterans health administration

BACKGROUND

Clinical practice guidelines discourage routine preoperative screening tests for patients undergoing low-risk procedures. This study sought to determine the frequency and costs of potentially low-value preoperative screening tests in Veterans Health Administration (VA) patients undergoing low-risk procedures.

METHODS

Using the VA Corporate Data Warehouse, we identified Operative Stress Score class 1 procedures ("very minor") performed without general anesthesia in VA during fiscal year 2019 and calculated the overall national and facility-level rates and costs of nine common tests received in the 30 preoperative days. Patient factors associated with receiving at least one screening test, and the number of tests received, were examined.

RESULTS

Eighty-six thousand three hundred twenty-seven of 178,775 low-risk procedures (49.3%) were preceded by 321,917 potentially low-value screening tests representing $11,505,170 using Medicare average costs. Complete blood count was the most common (33.2% of procedures), followed by basic metabolic profile (32.0%), urinalysis (26.3%), electrocardiography (18.9%), and pulmonary function test (12.4%). Older age, female sex, Black race, and having more comorbidities were associated with higher odds of low-value testing. Transthoracic echocardiogram occurred prior to only 4.5% of the procedures but accounted for 47.8% of the total costs ($5,499,860). In 129 VA facilities, the facility-level proportion of procedures preceded by at least one test ranged from 0 to 81.2% and facility-level costs ranged from $0 to $388,476.

CONCLUSIONS

Routine preoperative screening tests for very low-risk procedures are common and costly in some VA facilities. These results highlight a potential target to improve quality and value by reducing unnecessary care. Measures of low-value perioperative care could be integrated into VA's extensive quality monitoring and improvement infrastructure.

Assessing the sustainability of compliance with surgical site infection prophylaxis after discontinuation of mandatory active reporting: study protocol

BACKGROUND

Surgical site infections are common. Risk can be reduced substantially with appropriate preoperative antimicrobial administration. In 2005, the VA implemented the Surgical Care Improvement Project (SCIP) in the setting of high rates of non-compliance with antimicrobial prophylaxis guidelines. SCIP included public reporting of evidenced-based antimicrobial guideline compliance metrics in high-risk surgeries. SCIP was highly successful and led to high rates of adoption of preoperative antimicrobials and early discontinuation of postoperative antimicrobials (>95%). The program was retired in 2015, as the manual measurement and reporting process was costly with limited expected additional benefit. To our knowledge, no studies have assessed whether the gains achieved by SCIP were sustained since active support for the program was discontinued. Furthermore, there has been no investigation of the spread of antimicrobial prophylaxis guideline adoption beyond the limited set of procedures that were included in the program.

METHODS

Using a mixed methods sequential exploratory approach, this study will (1) quantitatively measure compliance with SCIP metrics over time and across all procedures in the five major surgical specialties targeted by SCIP and (2) collect qualitative data from stakeholders to identify strategies that were effective for sustaining compliance. Diffusion of Innovation Theory will guide assessment of whether improvements achieved spread to procedures not included under the umbrella of the program. Electronic algorithms to measure SCIP antimicrobial use will be adapted from previously developed methodology. These highly novel data mining algorithms leverage the rich VA electronic health record and capture structured and text data and represent a substantial technological advancement over resource-intensive manual chart review or incomplete electronic surveillance based on pharmacy data. An interrupted time series analysis will be used to assess whether SCIP compliance was sustained following program discontinuation. Generalized linear models will be used to assess whether compliance with appropriate prophylaxis increased in all SCIP targeted and non-targeted procedures by specialty over the duration the program's active reporting. The Dynamic Sustainability Framework will guide the qualitative methods to assess intervention, provider, facility, specialty, and contextual factors associated with sustainability over time. Barriers and facilitators to sustainability will be mapped to implementation strategies and the study will yield an implementation playbook to guide future sustainment efforts.

RELEVANCE

Sustainability of practice change has been described as one of the most important, but least studied areas of clinical medicine. Learning how practices spread is also a critically important area of investigation. This study will use novel informatics strategies to evaluate factors associated with sustainability following removal of active policy surveillance and advance our understanding about these important, yet understudied, areas.

Impact of policy-based and institutional interventions on postoperative opioid prescribing practices

BACKGROUND

We assessed the impact of policy-based and institutional interventions to limit postoperative opioid prescribing.

METHODS

Retrospective cohort study of patients who underwent laparoscopic/open appendectomies, laparoscopic/open cholecystectomies, and laparoscopic/open inguinal hernia repair during a 6-month interval in 2018 (control), 2019 (post-policy intervention), and 2020 (post-institutional intervention) to assess changes in postoperative opioid prescribing patterns. A survey was collected for the 2020 cohort.

RESULTS

Comparing the 762 patients identified in 2018, 2019, and 2020 cohorts there was a significant decrease in mean opioid tabs prescribed (23.5 ± 8.9 vs. 16.2 ± 7.0 vs. 12.8 ± 4.9, p < 0.01) and mean OME dosage (148.0 ± 68.0 vs. 108.6 ± 51.8 vs. 95.4 ± 38.0, p < 0.01), without a difference in refill requests. Patient survey (response rate 63%) indicated 91.4% of patients reported sufficient pain control.

CONCLUSION

Formalized opioid-prescribing guidelines and statewide regulations can significantly decrease postoperative opioid prescribing with good patient satisfaction. Surgeon education may facilitate efforts to minimize narcotic over-prescription without compromising pain management.

Assessment of the Association of Leadership Behaviors of Supervising Physicians With Personal-Organizational Values Alignment Among Staff Physicians

IMPORTANCE

Although misalignment of values between physicians and their organization is associated with increased risk of burnout, actionable organizational factors that contribute to perceived values alignment are poorly understood.

OBJECTIVE

To evaluate the association between the leadership behaviors of immediate supervisors and physicians' perception of personal-organizational values alignment.

DESIGN, SETTING, AND PARTICIPANTS

This survey study of faculty physicians and physician leaders at Stanford University School of Medicine was conducted from April 1 to May 13, 2019. The survey included assessments of perceived personal-organizational values alignment, professional fulfillment, and burnout. Physicians also evaluated the leadership behaviors of their immediate supervisor (eg, division chief) using a standardized assessment. Data analysis was performed from May to December 2020.

MAIN OUTCOMES AND MEASURES

Association between mean leadership behavior score (range, 0-10) of each supervisor and the mean personal-organizational values alignment scores (range, 0-12) for the physicians in their work unit.

RESULTS

Of 1924 physicians eligible to participate, 1285 (67%) returned surveys. Among these, 651 (51%) were women and 729 (57%) were aged 40 years or older. Among the 117 physician leaders evaluated, 66 (56%) had their leadership behavior independently evaluated by at least 5 physicians and were included in analyses. The mean (SD) personal-organizational values alignment score on the 0 to 12 scale was 6.19 (3.21). As the proportion of work effort devoted to clinical care increased, values alignment scores decreased. Personal-organizational values alignment scores demonstrated an inverse correlation with burnout (r = -0.39; P < .001) and a positive correlation with professional fulfillment (r = 0.52; P < .001). The aggregate leader behavior score of the 66 leaders evaluated correlated with the mean values alignment score for physicians in their work unit (r = 0.53; P < .001). Aggregate leader behavior score was associated with 21.6% of the variation in personal-organizational values alignment scores between work units. After adjusting for age, gender, academic rank, work hours, physician-leader gender concordance, and time devoted to clinical care, each 1-point increase in leadership score of immediate supervisor was associated with a 0.56-point (95% CI, 0.46-0.66; P < .001) increase in personal-organizational values alignment score.

CONCLUSIONS AND RELEVANCE

This survey study's results suggest that physicians experience their organization through the prism of their work unit leader. Organizational efforts to improve values alignment should attend to the development of first-line physician leaders.

Navigating the Covid-19 Pandemic by Caring for Our Health Care Workforce as They Care for Our Patients

Leaders at Stanford Medicine, located in one of the first U.S. communities to be affected by Covid-19, quickly realized that they were not prepared to meet the escalating needs of their clinical and operational workforce. The pandemic would require existing care-delivery structures across the academic medical system to be expanded and aligned to prioritize workforce protection. Leaders identified an approach driven by connection, collaboration, and caring. They created specialized teams to develop a systemwide Occupational Health service with practices and procedures to assess health care workers and begin robust Covid-19 polymerase chain reaction testing; to centralize operations to maximize utilization of essential clinical and nonclinical staffing resources; to make visible and address psychological safety concerns and basic needs for faculty and staff; to aggressively address personal protective equipment supply chain issues and effectively assess infection risk; and to plan for a safe return of elective procedures and visits.

Variation in Surgeons' Requests for General Anesthesia When Scheduling Carpal Tunnel Release

Background: Carpal tunnel release (CTR) can be performed with a variety of anesthesia techniques. General anesthesia is associated with higher risk profile and increased resource utilization, suggesting it should not be routinely used for CTR. The purpose of this study was to examine the patient factors associated with surgeons' requests for general anesthesia for CTR and the frequency of routine use of general anesthesia by Veterans Health Administration (VHA) surgeons and facilities. Methods: National VHA data for fiscal years 2015 and 2017 were used to identify patients receiving CTR. Mixed-effects logistic regression was used to evaluate patient, procedure, and surgeon factors associated with requests by the surgeon for general anesthesia versus other anesthesia techniques. Results: In all, 18 145 patients underwent CTR performed by 780 surgeons in 113 VHA facilities. Overall, there were 2218 (12.2%) requests for general anesthesia. Although some patient (eg, older age, obesity), procedure (eg, open vs endoscopic), and surgeon (eg, higher volume) factors were associated with lower odds of requests for general anesthesia, there was substantial facility- and surgeon-level variability. The percentage of patients with general anesthesia requested ranged from 0% to 100% across surgeons. Three facilities and 28 surgeons who performed at least 5 CTRs requested general anesthesia for more than 75% of patients. Conclusions: Where CTR is performed and by whom appear to influence requests for general anesthesia more than patient factors in this study. Avoidance of routine use of general anesthesia for CTR should be considered in future clinical practice guidelines and quality measures.

Patient-reported health literacy scores are associated with readmissions following surgery

BACKGROUND

Health literacy (HL) impacts medical care. We hypothesized that patients with low HL would have higher readmission rates following surgery.

METHODS

We conducted a prospective, multi-institutional study from 8/2015-6/2017 within the Veterans Affairs (VA) System including veterans who underwent general, vascular, or thoracic surgery. HL was assessed by Brief Health Literacy Screener and stratified into adequate vs. low. Patients were followed for 30 days post-discharge. Multivariable analyses examined correlations and logistic regression models adjusted for covariates.

RESULTS

736 patients were enrolled in the study; 98% (n = 722) completed the HL survey. At discharge, 33.2% of patients had low HL. The overall 30-day readmission rate was 16.3%, with a significant difference by HL (Adequate HL: 13.3% vs. Low HL: 22.5%, p < 0.01). After adjusting for clinical and demographic covariates, patients with low HL were 59% more likely to be readmitted (OR = 1.59, 95% CI = 1.02-2.50).

CONCLUSION

Low HL is common among VA surgery patients and is associated with readmission. Future studies should be focused on interventions to target this vulnerable patient population.

Overcoming a Hostile Work and Learning Environment in Academic Surgery-Tools for Change at Every Level

Mistreatment has been documented as a negative factor in the learning environment for the past 30 y but little progress has been made to determine an effective way to significantly improve these interactions. Faculty may also be victims of a hostile work environment as well, although frequency has not been well-measured or reported. In fact, it may be difficult to identify and address mistreatment and hostility in the work place within the commonly established surgical culture. Thus, efforts to define, identify, and address workplace mistreatment or hostility are crucial to the success of the academic surgical environment. This article summarizes presentations and panel discussion that took place at the 2019 Academic Surgical Congress organized by the Association for Academic Surgery and the Society of University Surgeons. Definitions of mistreatment and hostility were provided, as well as information regarding occurrence. Tools for addressing mistreatment in the work environment and tips for creating a positive environment were presented and discussed.

Variability and Costs of Low-Value Preoperative Testing for Carpal Tunnel Release Surgery

BACKGROUND

The American Society of Anesthesiologists (ASA) Choosing Wisely Top-5 list of activities to avoid includes "Don't obtain baseline laboratory studies in patients without significant systemic disease (ASA I or II) undergoing low-risk surgery - specifically complete blood count, basic or comprehensive metabolic panel, coagulation studies when blood loss (or fluid shifts) is/are expected to be minimal." Accordingly, we define low-value preoperative tests (LVTs) as those performed before minor surgery in patients without significant systemic disease. The objective of the current study was to examine the extent, variability, drivers, and costs of LVTs before carpal tunnel release (CTR) surgeries in the US Veterans Health Administration (VHA).

METHODS

Using fiscal year (FY) 2015-2017 data derived from the VHA Corporate Data Warehouse (CDW), we determined the overall national and facility-level rates and associated costs of receiving any of 8 common LVTs in the 30 days before CTR in ASA physical status (PS) I-II patients. We also examined the patient, procedure, and facility factors associated with receiving ≥1 LVT with mixed-effects logistic regression and the number of tests received with mixed-effects negative binomial regression.

RESULTS

From FY15-17, 10,000 ASA class I-II patients received a CTR by 699 surgeons in 125 VHA facilities. Overall, 47.0% of patients had a CTR that was preceded by ≥1 LVT, with substantial variability between facilities (range = 0%-100%; interquartile range = 36.3%), representing $339,717 in costs. Older age and female sex were associated with higher odds of receiving ≥1 LVT. Local versus other modes of anesthesia were associated with lower odds of receiving ≥1 LVT. Several facilities experienced large (>25%) increases or decreases from FY15 to FY17 in the proportion of patients receiving ≥1 LVT.

CONCLUSIONS

Counter to guidance from the ASA, we found that almost half of CTRs performed on ASA class I-II VHA patients were preceded by ≥1 LVT. Although the total cost of these tests is relatively modest, CTR is just one of many low-risk procedures (eg, trigger finger release, cataract surgery) that may involve similar preoperative testing practices. These results will inform site selection for qualitative investigation of the drivers of low-value testing and the development of interventions to improve preoperative testing practice, especially in locations where rates of LVT are high.

Ineffective esophageal motility: Concepts, future directions, and conclusions from the Stanford 2018 symposium

BACKGROUND

Ineffective esophageal motility (IEM) is a heterogenous minor motility disorder diagnosed when ≥50% ineffective peristaltic sequences (distal contractile integral <450 mm Hg cm s) coexist with normal lower esophageal sphincter relaxation (integrated relaxation pressure < upper limit of normal) on esophageal high-resolution manometry (HRM). Ineffective esophageal motility is not consistently related to disease states or symptoms and may be seen in asymptomatic healthy individuals.

PURPOSE

A 1-day symposium of esophageal experts reviewed existing literature on IEM, and this review represents the conclusions from the symposium. Severe IEM (>70% ineffective sequences) is associated with higher esophageal reflux burden, particularly while supine, but milder variants do not progress over time or consistently impact quality of life. Ineffective esophageal motility can be further characterized using provocative maneuvers during HRM, especially multiple rapid swallows, where augmentation of smooth muscle contraction defines contraction reserve. The presence of contraction reserve may predict better prognosis, lesser reflux burden and confidence in a standard fundoplication for surgical management of reflux. Other provocative maneuvers (solid swallows, standardized test meal, rapid drink challenge) are useful to characterize bolus transit in IEM. No effective pharmacotherapy exists, and current managements target symptoms and concurrent reflux. Novel testing modalities (baseline and mucosal impedance, functional lumen imaging probe) show promise in elucidating pathophysiology and stratifying IEM phenotypes. Specific prokinetic agents targeting esophageal smooth muscle need to be developed for precision management.

Development and Implementation of a Hands-on Surgical Pipeline Program for Low-Income High School Students

This qualitative study describes the development and implementation of a hands-on surgical pipeline program for low-income high school students.

Whole greater than the parts: integrated esophageal centers (IEC) and advanced training in esophageal diseases

An integrated esophageal center (IEC) is a multidisciplinary team with expertise, skill, range, and facilities necessary to achieve optimal outcomes in patients with esophageal diseases efficiently and expeditiously. Within IEC, patients presenting with esophageal symptoms undergo a detailed clinical, functional and structural evaluation of their esophagus prior to implementation of tailored medical, endoscopic or surgical therapy. Serving as a core, the IEC clinical practice also supports research and innovation in esophageal diseases as well as public and physician education. Referrals to the unit may be primary, either from primary care or self-initiated, or secondary from other specialty practices, to reassess patients who have previously failed therapies and to manage complex or complicated cases. The fundamental goals of the IEC are to provide value for patients with esophageal diseases, streamlining complex diagnostic investigations and expediting therapies aiming at reducing costs while improving clinical outcomes, and to accelerate knowledge generation through robust interaction and cross-training across disciplines. The organization of the IEC goes beyond traditional academic and clinical silos and involves a director and administrative team coordinating faculty and fellows from both medical and surgical disciplines and supported by other clinical lines, such as radiology, pathology, etc., while it interfaces with physicians, the public, basic, translational and clinical research groups, and related industry partners.

Precision GERD management for the 21st century

The highly heterogeneous nature of gastroesophageal reflux disease (GERD), together with the multiplicity of available diagnostic and therapeutic options (lifestyle, pharmacologic, endoscopic and surgical) available today call for a new approach that funnels the multidimensionality of the disease into precise and effective algorithms - reviewed herein- aimed at improving clinical outcomes.

New Approaches to Gastroesophageal Reflux Disease

BACKGROUND

Gastroesophageal reflux disease (GERD) is the most common gastrointestinal disorder of the esophagus. It is a chronic, progressive disorder that presents most typically with heartburn and regurgitation and atypically with chest pain, dysphagia, chronic cough, globus, or sore throat. The mainstay for diagnosis and characterization of the disorder is esophagoduodenoscopy (EGD), high-resolution esophageal manometry, and symptom-associated ambulatory esophageal pH impedance monitoring. Additional studies that can be useful in certain clinical presentations include gastric scintigraphy and oral contrast upper gastrointestinal radiographic series.

DISCUSSION

Refractory GERD can be surgically managed with various techniques. In obese individuals, laparoscopic Roux-en-Y gastric bypass should be considered due to significant symptom improvement and lower incidence of recurrent symptoms with weight loss. Otherwise, laparoscopic Nissen fundoplication is the preferred surgical technique for treatment of this disease with concomitant hiatal hernia repair when present for either procedure. The short-term risks associated with these procedures include esophageal or gastric injury, pneumothorax, wound infection, and dysphagia. Emerging techniques for treatment of this disease include the Linx Reflux Management System, EndoStim LES Stimulation System, Esophyx® and MUSE™ endoscopic fundoplication devices, and the Stretta endoscopic ablation system. Outcomes after surgical management of refractory GERD are highly dependent on adherence to strict surgical indications and appropriate patient-specific procedure selection.

Surgical Site Infection After Arthroplasty: Comparative Effectiveness of Prophylactic Antibiotics: Do Surgical Care Improvement Project Guidelines Need to Be Updated?

BACKGROUND

Prophylactic antibiotics decrease surgical site infection (SSI) rates, and their timing, choice, and discontinuation are measured and reported as part of the Surgical Care Improvement Project (SCIP). The aim of this study was to assess the comparative effectiveness of the SCIP-approved antibiotics for SSI prevention.

METHODS

This retrospective cohort study utilized national Veterans Affairs (VA) data on patients undergoing elective hip or knee arthroplasty from 2005 to 2009. Data on prophylactic antibiotics were merged with VA Surgical Quality Improvement Program data to identify patient and procedure-related risk factors for SSI. Patients were stratified by documented penicillin allergy. Chi-square and Wilcoxon rank-sum tests were used to compare SSI rates among patients receiving SCIP-approved prophylactic antibiotics.

RESULTS

A total of 18,830 elective primary arthroplasties (12,823 knee and 6007 hip) were included. Most patients received prophylactic cefazolin as the sole agent (81.9%), followed by vancomycin as the sole agent (8.0%), vancomycin plus cefazolin (5.6%), and clindamycin (4.5%). Documented penicillin allergy accounted for 54.1% of cases involving vancomycin administration compared with 94.6% of cases involving clindamycin. The overall thirty-day SSI rate was 1.4%, and the unadjusted rate was 2.3% with vancomycin only, 1.5% with vancomycin plus cefazolin, 1.3% with cefazolin only, and 1.1% with clindamycin. Unadjusted analysis of penicillin-allergic patients revealed an SSI rate of 2.0% with vancomycin only compared with 1.0% with clindamycin (p = 0.18). For patients without penicillin allergy, the SSI rate was 2.6% with vancomycin only compared with 1.6% with vancomycin plus cefazolin (p = 0.17) and 1.3% with cefazolin only (p < 0.01).

CONCLUSIONS

Current SCIP guidelines address antibiotic timing but not antibiotic dosage. (The generally accepted recommendation for vancomycin is 15 mg/kg.) Although vancomycin is a narrower-spectrum antibiotic than either cefazolin or clindamycin, our finding of higher SSI rates following prophylaxis with vancomycin only may suggest a failure to use an appropriate dosage rather than an inequality of antibiotic effectiveness.

LEVEL OF EVIDENCE

Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Mediation of smoking-associated postoperative mortality by perioperative complications in veterans undergoing elective surgery: data from Veterans Affairs Surgical Quality Improvement Program (VASQIP)--a cohort study

OBJECTIVE

To assess the mediation of smoking-associated postoperative mortality by postoperative complications.

DESIGN

Observational cohort study.

SETTING

Using data from the Veterans Affairs (VA) Surgical Quality Improvement Programme, a quality assurance programme for major surgical procedures in the VA healthcare system, we assessed the association of current smoking at the time of the surgery with 6-month and 1-year mortality.

PRIMARY AND SECONDARY OUTCOME MEASURES

Using mediation analyses, we calculated the relative contribution of each smoking-associated complication to smoking-associated postoperative mortality, both unadjusted and adjusted for age, race/ethnicity, work relative value unit of the operation, surgeon specialty, American Society of Anesthesiologists class and year of surgery. Smoking-associated complications included surgical site infection (SSI), cardiovascular complications (myocardial infarction, cardiac arrest and/or stroke) and pulmonary complications (pneumonia, failure to wean and/or reintubation).

RESULTS

There were 186 632 never smokers and 135 741 current smokers. The association of smoking and mortality was mediated by smoking-related complications with varying effects. In unadjusted analyses, the proportions of mediation of smoking to 6-month mortality explained by the complications were as follows: SSIs 22%, cardiovascular complications 12% and pulmonary complications 89%. In adjusted analyses, the per cents mediated by each complication were as follows: SSIs 2%, cardiovascular complications 4% and pulmonary complications 22%. In adjusted analyses for 1-year mortality, respective per cents mediated were 2%, 3% and 16%.

CONCLUSIONS

Pulmonary complications, followed by cardiovascular complications and SSIs were mediators of smoking-associated 6-month and 1-year mortality. Interventions targeting smoking cessation and prevention and early treatment of pulmonary complications has the likelihood of reducing postoperative mortality after elective surgery.

Duplicate publications in the otolaryngology literature

OBJECTIVE/HYPOTHESIS

A duplicate publication duplicates other published work by the same author(s). The purpose of the study was to define the extent of this problem within the otolaryngology literature.

STUDY DESIGN

Retrospective review of the literature.

METHODS

Original articles published in Archives of Otolaryngology-Head and Neck Surgery and Laryngoscope in 1999 were reviewed using the OVID search engine. Titles and abstracts from English articles written by the same first, second, or last author were analyzed, and suspected publications were evaluated. Duplicate publications were classified as dual (identical data set and conclusions) or suspected dual (nearly identical data set and conclusions) publications.

RESULTS

Of the 492 articles evaluated, 40 index articles were identified. These led to a total of 42 (8.5%) duplicate articles of which 27 were classified as dual and 15 as suspected dual publications. Approximately half of the duplicate publications were published by authors in the United States (55%). Duplicate articles usually appeared within 12 months of the each other (74%) and failed to cross-reference the earlier publication (83%).

CONCLUSIONS

Journal editors have become aware of an increase in the number of duplicate publications in the medical literature. The incidence of duplicate publications in the otolaryngology literature appears to be similar to that in other specialties.

Developing a free supportive care program for cancer patients within an integrative medicine clinic

The cancer patient's journey not only includes a threat to one's life, but the need to face many medical and emotional challenges. The free Cancer Supportive Care Program (CSCP) within the Center for Integrative Medicine Clinic at Stanford University Hospital and Clinics has been identified as a successful model for helping patients to deal with these challenges. Its programs include informational lectures, support groups, chair massages, exercise, alternative modality classes, a Life Tapes Project, an informational website, and a bimonthly newsletter available free to anybody touched by cancer. Now in its third year, this program benefits from a blending of leadership resources, availability of space, institutional agreement on patient need and funds from private and corporate donations. By presenting the basic premises of the Cancer Supportive Care program and outlining specifics about the program, institutions in various national and international demographic regions may implement similar programs according to their resources and the needs of patients. It is our hope that the CSCP can become a model for the development of similar programs in various parts of the United States and abroad.

In vitro transcription/translation assay for the screening of hMLH1 and hMSH2 mutations in familial colon cancer

BACKGROUND & AIMS

Hereditary nonpolyposis colorectal cancer (HNPCC) has been linked recently to a defect in repairing mismatched nucleotides in DNA. The aim of this study was to screen for germline mutations that result in prematurely truncated proteins in two of the mismatch repair genes identified at this time, hMLH1 and hMSH2, in a consecutive series of patients belonging to familial aggregations of colorectal cancer.

METHODS

Nineteen individuals with colorectal cancer from 19 families were consecutively referred because of a strong positive family history of colorectal cancer. Premature truncation mutations in hMLH1 and hMSH2 were sought from lymphocyte RNA by using an in vitro transcription/translation (IVTT) assay.

RESULTS

Protein truncating mutations in the hMLH1 or hMSH2 genes were found in 50% of families with HNPCC (6 of 12) but were not observed in any of the remaining familial aggregations that did not fulfill the standard criteria for HNPCC. In some of the IVTT-positive samples, the mutations were characterized by genomic sequencing.

CONCLUSIONS

IVTT may be a practical method to accomplish primary screening of germline mutations in DNA mismatch pair genes in HNPCC; however, a broader approach is necessary to obtain a more complete picture of the mutational spectrum in HNPCC and other familial aggregations of colorectal cancer.

Carbonic anhydrase II gene expression in isolated canine gastric parietal cells

The participation of carbonic anhydrase (CA II) in the gastric acid secretory process has been the subject of considerable controversy. We utilized a cDNA probe for CA II to measure CA II gene expression in canine gastric parietal cells that had been stimulated with the three principal acid secretagogues, carbachol, gastrin, and histamine. Hybridization to dot blots of total parietal cell RNA showed a significant increase in specific CA II mRNA content within minutes of secretagogue addition: carbachol stimulation led to an increase of 52 +/- 8.9%, reaching a maximum within 20 min; gastrin stimulation led to an increase within 60 min of 104 +/- 10.6%; stimulation with histamine was followed within 20 min by an increase of 30 +/- 7.2%. We also measured transcription rates for the CA II gene in cells stimulated by each agent and found an increase within 15 min. Our results show that CA II gene expression is regulated by agents that stimulate the parietal cell to secrete acid and that the accumulation of CA II mRNA subsequent to the initial interaction of stimulant appears to result from new transcription of the CA II gene. These data suggest the participation of CA II in the acid secretory response of the parietal cell to secretagogues.