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At least 631 records · Page 35Linked to original sources
PubMed1999

The effect of the surgeon and the laser wavelength on the response to focal photocoagulation for diabetic macular edema.

OBJECTIVE: To determine the effect of the surgeon and the wavelength of laser used on the response to focal photocoagulation for diabetic macular edema. DESIGN: Retrospective case-control study. PARTICIPANTS: Forty-four matched pairs of cases by two different retina surgeons in the study of surgeon influence were examined. Sixty-nine matched pairs of cases using dye yellow versus argon green laser treatment in the study of wavelength influence also were studied. In both studies, eyes were matched for the only patient-dependent variables affecting outcome: age, initial visual acuity, follow-up time, and diabetic control by diet versus any other method. INTERVENTION: Focal laser photocoagulation for clinically significant diabetic macular edema was performed. MAIN OUTCOME MEASURE: Visual acuity at 6 months follow-up was measured. RESULTS: For the study in which the only difference was the surgeon, at 6 months follow-up the mean difference in logarithm of the minimum angle of resolution (logMAR) visual acuity was -0.045, 95% confidence interval (-0.160, 0.070). For the study in which wavelength varied, at 6 months the mean difference in logMAR visual acuity was -0.048, 95% confidence interval (-0.147, 0.052). The power of the surgeon study to detect a difference in the logMAR visual acuity of 0.3 is 88% and of the wavelength study to detect this difference is 99%. CONCLUSION: In looking at the 6-month visual outcome after focal laser photocoagulation for clinically significant diabetic macular edema, different fellowship trained surgeons and the choice of green or yellow wavelength had no effect on the treatment outcome.

Case-Control Studies↗
PubMed1994

Prevention of venous thromboembolism in North America: results of a survey among general surgeons.

PURPOSE: The purpose of this study was to analyze current attitudes toward the prevention of postoperative venous thromboembolism among North American general surgeons. METHODS: A survey regarding awareness of the problem of venous thromboembolism and preferred modalities of prophylaxis was sent to 3500 randomly selected Fellows of the American College of Surgeons. RESULTS: A total of 1018 (29.1%) surveys was returned. Most of the responding surgeons consider venous thromboembolism a serious health problem. Ninety percent of the surgeons use prophylaxis against venous thromboembolism routinely. The most frequently used modalities are intermittent pneumatic compression, low-dose heparin, and elastic stocking. A combination of physical and pharmacologic methods is used by one fourth of respondents, and only 50% start pharmacologic prophylaxis before the surgical procedure. The thrombosis risk factors that are most frequently considered by surgeons when deciding about using prophylaxis are history of venous thromboembolism, immobility, and length of operation. CONCLUSIONS: North American surgeons who responded to this survey are well aware of the problem of venous thromboembolism and their approach to prevention has been significantly modified in the last 10 years. Compared with similar European surveys this survey reveals a higher implementations of physical methods such as intermittent pneumatic compression and elastic stockings. Because of the limited response rate and possibility of sampling bias, these findings should be interpreted with caution.

Adult↗
PubMed2003

Who can best recruit to randomized trials? Randomized trial comparing surgeons and nurses recruiting patients to a trial of treatments for localized prostate cancer (the ProtecT study).

BACKGROUND AND OBJECTIVE: Recruitment to randomized trials is often difficult, but few studies have investigated interventions to improve recruitment. In a randomized trial nested within a trial of treatments for localized prostate cancer, we investigated the comparative effectiveness and cost-effectiveness of nurses and surgeons in recruiting patients. METHODS: Men with localized prostate cancer were randomized to see a nurse or urologic surgeon for an "information appointment" in which they were asked to consent to the ProtecT treatment trial comparing surgery, radiotherapy, and active monitoring. Analysis was conducted by intention to treat using chi-square with 95% confidence intervals for proportions and differences between groups. An economic evaluation was performed using the duration of appointments and grade of recruitment staff. RESULTS: Case-finding identified 167 men with localized prostate cancer. One hundred fifty (90%) took part in the recruitment trial. There was a 4.0% difference between nurses and surgeons in recruitment rates (67% nurses, 71% urologists, 95% CI -10.8% to +18.8%, P=.60). Cost-minimization analysis showed that nurses spent longer times with patients but surgeon costs were higher and nurses often supported surgeon-led clinics. CONCLUSION: Nurses were as effective and more cost-effective recruiters than urologic surgeons. This suggests an increased role for nurses in recruiting patients to randomized trials.

Aged↗
PubMed2001

The relationship between predicted and actual cardiac surgical mortality: impact of risk grouping and individual surgeons.

OBJECTIVE: To study the relationship between predicted and actual mortality in a cardiac surgical practice and to determine whether there is a consistent relationship across risk groups and surgeons. METHODS: Risk information (Parsonnet score) was prospectively collected for 6213 consecutive adult patients undergoing cardiac surgery at one institution. The relationship between predicted mortality and actual mortality was analysed by risk group for all patients and for individual surgeons' practices. RESULTS: Predicted mortality was 10.2%. Actual mortality was 4.2%, giving a mortality ratio of 41% of predicted. This ratio was not consistent across the five major risk groups, ranging from 32% in moderate risk to 67% in very low risk patients. When analysed by individual surgical practices, the results were even more disparate, with a mortality index range between 0% for one surgeon's low risk patients to 150% for another surgeon's very low risk patients. CONCLUSION: The relationship between predicted and actual mortality at one institution may vary across the risk spectrum and between surgeons. This should be taken into account in preoperative risk assessment and informed patient consent. Individual surgeons may have strengths and weaknesses which are related to preoperative risk stratification.

Cardiac Surgical Procedures↗
PubMed2002

How much colorectal surgery do general surgeons do?

BACKGROUND: Surgical subspecialization has croded the traditional domain of the general surgeon. The purpose of this study was to assess the volume and distribution of colon and rectal cases performed by general surgeons. STUDY DESIGN: The American Board of Surgery database was queried to identify and categorize the number of colorectal cases performed yearly by "generalists" (general surgeons) recertified between 1995-1997. RESULTS: There were 2,434 general surgeons (those with a basic certificate only) recertified. The mean number of large bowel cases was 33 (range 0-243). Thirty-one cases represented the 70th percentile and 60 cases represented the 90th percentile. The mean number of anorectal cases was 12.3 (range 0-185). The 70th percentile was 15 cases, and the 90th percentile was 26 cases. Seventy-five percent of general surgeons perform > or = 17 large intestine cases each year, whereas, only 25% perform > 16 total anorectal cases. CONCLUSION: General surgeons perform a substantial number of colon resections and relatively few anorectal cases. It is unclear whether this is an issue of anorectal training in general surgery programs or referral patterns.

Colorectal Surgery↗
PubMed1998

Estimates of distance by claudicants and vascular surgeons are inherently unreliable.

Claudication distance and maximum walking distance are both measures of disability. Estimates of the distances which a patient with intermittent claudication can walk are commonly used by vascular surgeons as surrogate measures of handicap. We studied how accurately distance was estimated by 70 patients with intermittent claudication, and by 100 British vascular surgeons. Patients and vascular surgeons estimated actual distances of 30 m and 34 m, respectively. Estimates were 46 m median (range 2.7-402 m) for claudicants, and 46 m median (range 15.2-186 m) for vascular surgeons, median over estimates of 52% and 34% respectively. Claudicants' errors can easily be eliminated by accurate and appropriate measurement of claudication and maximum walking distances but interpretation of the data by surgeons is dependent on their own ability to estimate distance. Flawed perceptions by patients and their surgeons of the disability of reduced walking distance illustrates the need for reliable measures of handicap on which to base therapeutic decisions in patients with intermittent claudication.

Disability Evaluation↗
PubMed2004

Controversies in cervical discectomy and fusion: practice patterns among Canadian surgeons.

OBJECTIVE: Optimal fusion technique and peri-operative management of patients undergoing anterior cervical discectomy (ACD) is unclear. We document current practice patterns among Canadian spinal surgeons regarding the surgical management of single level degenerative cervical spondylosis. METHODS: We conducted a web-based survey of neurosurgeons and spinal orthopedic surgeons in Canada. We asked questions pertaining to the management of single level cervical degenerative disc disease causing radiculopathy and/or myelopathy, including frequency of fusion following single-level discectomy, preferred fusion technique, indications and frequency of use of anterior plating, and use of an external cervical orthosis following surgery. Demographic factors assessed included training background, type and length of practice. RESULTS: Sixty respondents indicated that their practice involved at least 5% spine surgery and were included in further analysis. Neurosurgeons comprised 59% of respondents, and orthopedic surgeons 41%. Fusion was employed 93% of the time following ACD; autologous bone was the preferred fusion material, used in 76% of cases. Neurosurgeons employed anterior cervical plates in 42% of anterior cervical discectomy and fusion cases, whereas orthopedic surgeons used them 70% of the time. External cervical orthoses were recommended for 92% of patients without plates and 61% of patients with plates. Surgeons who had been in practice for less than five years were most likely to be performing spinal surgery, using anterior cervical plates, and recommending the postoperative use of cervical orthoses. CONCLUSION: Practice patterns vary among Canadian surgeons, although nearly all employ fusion and many use instrumentation for single-level ACD. Training background, and type and length of practice influence practice habits.

Adult↗
PubMed1994

The influence of the operating surgeon's specialisation on patient survival in ovarian carcinoma.

A retrospective analysis of ovarian cancer patients registered with the West Midlands Cancer Registry from 1 January 1985 to 31 December 1987 was undertaken to examine the variables associated with survival patterns, with particular reference to the specialty of the surgeon. A total of 1,654 patients were registered, of whom 1,184 had histologically confirmed ovarian cancer, with the operator identified. This consisted of 870 patients operated on by gynaecologists and 314 operated on by general surgeons. A significantly older population and a greater number of patients with stage III/IV disease were operated on by general surgeons. The median survival of patients under the general surgeons' care was 9.87 months, significantly lower (P < 0.0001) than the survival of the gynaecologists' patients (median survival = 29.1 months). Univariate and multivariate analysis correlated poor prognosis with advanced stage disease, older age, the presence of bulky residual tumour and a general surgeon as the operator. Stepwise Cox's proportional hazard analysis confirmed the general surgeon as an independent adverse prognostic factor with a relative hazard ratio of 1.34 (95% confidence interval = 1.05-1.71). Accepting the limitations of retrospective reviews, these findings suggest that every attempt be made to ensure that a gynaecologist is involved in the treatment of patients with ovarian pathology.

Adolescent↗
PubMed2001

The influence of patients' concerns on surgeons' recommendations for early breast cancer.

This paper examines whether an older patient's concerns about surgical treatment of breast cancer--such as fear of dying or about losing a breast--affect the treatment recommendations by their surgeons. A sample of 137 older women diagnosed with early stage breast cancer between 1994 and 1996 were interviewed within 2 months of diagnosis to determine demographic characteristics, their attitudes about breast cancer treatments, and which surgical treatment their surgeon initially recommended. The treatment preferences of the 35 surgeons treating these women were ascertained by asking them what treatment they would usually recommend to a hypothetical 75-year-old woman with early stage breast cancer. Patients who reported their feelings about losing a breast as 'very important' were less likely to be recommended mastectomy (Odds Ratio (OR) = 0.39; 95% (Confidence Interval) CI 0.16, 0.94), while patients who reported fear of dying from breast cancer as 'very important' were more likely to be recommended mastectomy (OR = 4.60; 95% CI 1.94, 11.59), after adjusting for surgeons' age and the surgeons' treatment preference when presented with a hypothetical patient. It is concluded that surgeons integrate patients' attitudes and concerns into their treatment recommendations.

Aged↗
PubMed1999

Thomas Peel Dunhill: pioneer thyroid surgeon.

Thomas Peel Dunhill, a name by now almost completely forgotten in his native Australia, was born in 1876 near Kerang in the State of Victoria. Although he qualified as a pharmacist in 1898, Dunhill had already decided to study medicine and graduated in 1903 from the Clinical School of the Melbourne Hospital. He was regarded as an outstanding student. In 1905 Dunhill was invited to join the Senior Medical Staff at St Vincent's Hospital by Mother Berchmans Daly, the then Mother Rectress. In 1906 Dunhill was awarded the MD and in 1907 he performed his first thyroid lobectomy under local anaesthesia for toxic goitre. As early as 1908, Dunhill understood the essentials for successful surgery in thyrotoxicosis--enough thyroid had to be removed to cure the condition. To this end, he advocated a bilateral attack on the thyroid and advocated thyroidectomy in the thyrocardiac patient. He did this before Theodor Kocher, Charles Mayo, William Halsted or George Crile. In 1911 Dunhill visited the USA and England and communicated his results to the thyroid surgeons in both countries (230 cases of exophthalmic goitre operated on with four deaths). The English could not, or would not, believe his results as the mortality of surgery for exophthalmic goitre at St Thomas's Hospital, London in 1910 was 33%. Dunhill served with distinction in the Great War and his abilities favourably impressed George Gask, who was to become the Professor of Surgery at St Bartholomew's Hospital, London. Gask eventually invited Dunhill to join his Unit and Dunhill left St Vincent's Hospital in 1920. Between 1920 and Dunhill's retirement at the age of 60 in 1935, he became the outstanding general surgeon at St Bartholomew's Hospital. Dunhill and Cecil Joll, were regarded as the leading thyroid surgeons in the UK. Knighted in 1933, Dunhill was appointed surgeon to the Royal Household, serving four British monarchs. In addition to his brilliant surgical career, Dunhill maintained a love for the land. He was an expert fly fisherman. Dunhill retired from surgical practice in 1949 and died at the age of 80 in 1957 at his London home. Many eulogies were delivered, especially by Sir James Paterson Ross and Sir Geoffrey Keynes, his former pupils. Dunhill's exploits as a thyroid surgeon in the development of a safe and effective treatment for thyrotoxicosis and in operating on the thyrocardiac enables this modest, courteous and loyal Australian to be included with Theodor Kocher, Charles Mayo, William Halsted and George Crile in the pantheon of pioneer thyroid surgeons.

Australia↗
PubMed2000

Leo Doyle, master surgeon.

On 3 March 1953 Leo Doyle died at the Mercy Hospital, Melbourne. The day before he died Leo Doyle had been operating at the Mercy Hospital when he took ill. Doyle's final illness was almost certainly the result of the severe aortic stenosis that had been developing over some years. His death at the relatively young age of 61 ended the career of a man described by Sir Gordon Gordon Taylor as the greatest technical surgeon that he had ever seen. In all likelihood Australian surgery will never see the likes of Doyle, a virtuoso surgeon, again. And yet to many of the surgeons who were Doyle's contemporaries and to those who followed him he remained somewhat of an enigma. Perhaps in some way the description of the great French surgeon Baron Dupuytren may also be applicable to Leo Doyle: known to all, loved by many, understood by few. By all accounts Leo Doyle's surgical repertoire knew no bounds. He operated with equal facility on the central nervous system, the head and neck, in the thorax, abdomen and pelvis and he was more than competent in gynaecology, urology and orthopaedics. In the latter part of his career he became, par excellence, a cancer surgeon. He was, arguably, Australia's first surgical oncologist. No procedure was deemed too complicated or demanding. Like some other superb technicians his judgement at times did not match his technical ability. Doyle was one of the first surgeons in Australia to perform hindquarter amputation and he helped to pioneer the operations of total gastrectomy and oesophagogastrectomy. An avid reader of the surgical literature, he possessed an enormous library which was matched by an equally large collection of surgical instruments. Unlike Devine he published relatively little. He was not a good clinical teacher, preferring to teach by example in the operating theatre. Although interested in music and the visual arts, surgery was his life.

Australia↗
PubMed1999

Experienced laparoscopic surgeons are automated to the "fulcrum effect": an ergonomic demonstration.

BACKGROUND AND STUDY AIMS: The inversion of the normal laparoscopic image around the Y-axis has been shown to facilitate the rate of learning of a laparoscopic task in novice subjects. The aim of this study was to investigate the effect of Y-axis image inversion on the performance of experienced laparoscopic surgeons; this had not been previously investigated. METHODS: A total of 16 experienced surgeons,who had already carried out more than 50 operative laparoscopic procedures, and 16 novice participants, who had carried out no procedures, were required to make multiple defined incisions under laparoscopic laboratory conditions within ten 1-minute periods. Participants were randomly allocated to perform the task under either normal or Y-axis inverted imaging conditions (eight experienced surgeons and eight novices in each condition). RESULTS: Y-axis inversion had a significant detrimental effect on the performance of the surgeons, whilst facilitating the performance of novices. The surgeons however, adapted to the inverted condition rapidly, showing a significant improvement in performance over the ten trials. CONCLUSIONS: The Y-axis-inverted image has a detrimental effect on the performance of experienced surgeons, indicating that they have automated to the "fulcrum effect" of the abdominal wall on instrument manipulation. Y-axis-image inversion was found to facilitate significant learning trends, regardless of the participants' level of experience.

Abdomen↗
PubMed2001

Burnout among American surgeons.

BACKGROUND: The long-term consequences of stress on the surgeon are unknown. One manifestation of stress is burnout. The purpose of this study was to measure the prevalence of burnout in actively practicing American surgeons. METHODS: The Maslach Burnout Inventory and a questionnaire of our own design were sent to 1706 graduates of various University of Michigan surgical residencies (1222) and members of the Midwest Surgical Association (484). The response rate was 44%. Responses from 582 actively practicing surgeons were the sample used for analysis. RESULTS: Thirty-two percent of actively practicing surgeons showed "high" levels of emotional exhaustion, 13% showed "high" levels of depersonalization, and 4% showed evidence for low personal accomplishment. Younger surgeons were more susceptible to burnout (r = -0.28, P <.01). Burnout was not related to caseload, practice setting, or percent of patients insured by a health maintenance organization. Important etiologic factors were a sense that work was "overwhelming" (r = 0.61, P <.01), a perceived imbalance between career, family, and personal growth (r = -0.56), P <.01), perceptions that career was unrewarding (r = -0.42, P <.01), and lack of autonomy or decision involvement (r = -0.39, P <.01). A strong association was noted between burnout elements and a desire to retire early (r = 0.50, P <.01). CONCLUSIONS: Burnout is an important problem for actively practicing American surgeons. These data could be used to modify existing surgical training curricula or as an aid to surgical leadership when negotiating about the surgical work environment.

Adult↗
PubMed2002

Patient outcomes for segmental colon resection according to surgeon's training, certification, and experience.

Background. We examined patient outcomes for colon resection to determine if they varied according to surgeon-specific factors including: (1) American Board of Surgery (ABS) certification, (2) colorectal surgery subspecialty certification, (3) site of residency training (university-based vs nonuniversity-based), and (4) years of experience since ABS certification. Methods. We performed a retrospective study of 15,427 admissions of northern Illinois residents who underwent segmental colon resection as their primary operation from 1994 to 1997 at 76 nonfederal Illinois hospitals. There were 514 surgeons. Main outcome measures were inpatient mortality, complications, and hospital length of stay. Regression analyses with mixed effects were used to assess the significance of surgeon-specific variables as a predictor of outcomes after risk adjustment for patient age, gender, emergency admission, surgeon volume, hospital site, colon pathology, and comorbid illnesses. Results. ABS-certification was associated with reduced mortality and morbidity. Increasing years of experience was associated with reduced mortality. Colorectal surgery certification and site of residency training did not significantly affect outcomes. Conclusion. We were able to link patient outcomes with surgeon's training. Certification was an important determinant of patient outcomes for colon resection. Increasing surgeon experience also had a favorable effect on outcomes, suggesting a continued learning curve subsequent to residency. (Surgery 2002;132:663-72).

Adult↗
PubMed2000

Does the endovascular repair of aortoiliac aneurysms pose a radiation safety hazard to vascular surgeons?

OBJECTIVES: Endovascular aortoiliac aneurysm (EAIA) repair uses substantial fluoroscopic guidance that requires considerable radiation exposure. Doses were determined for a team of three vascular surgeons performing 47 consecutive EAIA repairs over a 1-year period to determine whether this exposure constitutes a radiation hazard. METHODS: Twenty-nine surgeon-made aortounifemoral devices and 18 bifurcated devices were used. Three surgeons wore dosimeters (1) on the waist, under a lead apron; (2) on the waist, outside a lead apron; (3) on the collar; and (4) on the left ring finger. Dosimeters were also placed around the operating table and room to evaluate the patient, other personnel, and ambient doses. Exposures were compared with standards of the International Commission on Radiological Protection (ICRP). RESULTS: Total fluoroscopy time was 30.9 hours (1852 minutes; mean, 39.4 minutes per case). Yearly total effective body doses for all surgeons (under lead) were below the 20 mSv/y occupational exposure limit of the ICRP. Outside lead doses for two surgeons approximated recommended limits. Lead aprons attenuated 85% to 91% of the dose. Ring doses and calculated eye doses were within the ICRP exposure limits. Patient skin doses averaged 360 mSv per case (range, 120-860 mSv). The ambient (> 3 m from the source) operating room dose was 1.06 mSv/y. CONCLUSIONS: Although the total effective body doses under lead fell within established ICRP occupational exposure limits, they are not negligible. Because radiation exposure is cumulative and endovascular procedures are becoming more common, individuals performing these procedures must carefully monitor their exposure. Our results indicate that a team of surgeons can perform 386 hours of fluoroscopy per year or 587 EAIA repairs per year and remain within occupational exposure limits. Individuals who perform these procedures should actively monitor their effective doses and educate personnel in methods for reducing exposure.

Aortic Aneurysm↗
PubMed2005

Female surgeons' alcohol use: a study of a national sample of norwegian doctors.

AIMS: This study was designed to describe the alcohol use by female surgeons and the hazards of their drinking habits for them compared with the habits of female doctors from non-surgical specialities, and with those of their male colleagues in surgery, and to identify the variables associated with hazardous drinking. METHODS: The data were collected in 2000 from a representative national sample of 1120 Norwegian doctors. Alcohol use was measured using a modified version of the Alcohol Use Disorders Identification Test. A score of 9 or more was used as an indicator of hazardous drinking. RESULTS: Female surgeons compared with female non-surgeons had tendencies for more frequent moderate alcohol consumption accompanied by more frequent consumption of larger amounts of alcohol, and a significantly higher rate of hazardous drinking (18 vs 7.6%). Being a surgeon (OR = 1.7, 95% CI 1.2-2.4), male (OR = 2.7, 1.7-4.1) and aged 45 years or over (OR = 1.5, 1.1-2.2) were significant predictors of hazardous drinking. With separate gender analyses, being a surgeon was a significant predictor for both females (OR = 2.8, 1.2-6.6) and males (OR = 1.5, 1.0-2.3). CONCLUSION: Female surgeons practising in Norway drink more frequently and more hazardously than other female doctors. There are a number of possible explanations for this. Surgical culture may be an important factor.

Adult↗
PubMed2006

Effect of surgeon specialty on processes of care and outcomes for ovarian cancer patients.

BACKGROUND: For many diseases, specialized care (i.e., care rendered by a specialist) has been associated with superior-quality care (i.e., better outcomes). We examined associations between physician specialty and outcomes in a population-based cohort of elderly ovarian cancer surgery patients. METHODS: We analyzed the Medicare claims, by physician specialty, of all women aged 65 years or older who underwent surgery for pathologically confirmed invasive epithelial ovarian cancer between January 1, 1992, and December 31, 1999, while living in an area monitored by the Surveillance, Epidemiology, and End Results (SEER) program to assess important care processes (i.e., the appropriate extent of surgery and use of adjuvant chemotherapy) and outcomes (i.e., surgical complications, ostomy rates, and survival). All statistical tests were two-sided. RESULTS: Among 3067 ovarian cancer patients who underwent surgery, 1017 patients (33%) were treated by a gynecologic oncologist, 1377 patients (45%) by a general gynecologist, and 673 patients (22%) by a general surgeon. Among patients with stage I or II disease, those treated by a gynecologic oncologist (60%) were more likely to undergo lymph node dissection than those treated by a general gynecologist (36%) or a general surgeon (16%). Patients with stage III or IV disease were more likely to undergo a debulking procedure if the initial surgery was performed by a gynecologic oncologist (58%) than by a general gynecologist (51%) or a general surgeon (40%; P < .001) and were more likely to receive postoperative chemotherapy when operated on by a gynecologic oncologist (79%) or a general gynecologist (76%) than by a general surgeon (62%, P < .001). Survival among patients operated on by gynecologic oncologists (hazard ratio [HR] of death from any cause = 0.85, 95% confidence interval [CI] = 0.76 to 0.95) or general gynecologists (HR = 0.86, 95% CI = 0.78 to 0.96) was better than that among patients operated on by general surgeons. CONCLUSIONS: Ovarian cancer patients treated by gynecologic oncologists had marginally better outcomes than those treated by general gynecologists and clearly superior outcomes compared with patients treated by general surgeons.

Aged↗
PubMed2001

Hospital profitability per hour of operating room time can vary among surgeons.

The operating margins (i.e., profits) of hospitals are decreasing. An important aspect of a hospital's finances is the profitability of individual surgical cases, which is measured by contribution margin. We sought to determine the extent to which contribution margin per hour of operating room (OR) time can vary among surgeons. We retrospectively analyzed 2848 elective cases performed by 94 surgeons at the Stanford University School of Medicine. For each case, we subtracted variable costs from the total payment to the hospital to compute contribution margin. We found moderate variability in contribution margin per hour of OR time among surgeons, relative to the variability in contribution margins per OR hour among each surgeon's cases (Cohen's f equaled 0.29, 95% lower confidence interval bound 0.27). Contribution margin per OR hour was negative for 26% of the cases. These results have implications for hospitals for which OR utilization is extensive, and for which elective cases are only scheduled if they can be completed during regularly scheduled hours. To increase or achieve profitability, managers need to increase the hours of lucrative cases, rather than encourage surgeons to do more and more cases. Whether the variability in contribution margin among surgeons should be used to more optimally (profitably) allocate OR time depends on the scheduling objectives of the surgical suite.

Aged↗