Acute Care Surgery Service Research Articles

Acute general surgery in Canada: a survey of current handover practices

Today's acute care surgery (ACS) service model requires multiple handovers to incoming attending surgeons and residents. Our objectives were to investigate current handover practices in Canadian hospitals that have an ACS service and assess the quality of handover practices in place. We administered an electronic survey among ACS residents in 6 Canadian general surgery programs. Resident handover of patient care occurs frequently and often not under ideal circumstances. Most residents spend less than 5 minutes preparing handovers. Clinical uncertainty owing to inadequate handover is most likely to occur during overnight and weekend coverage. Almost one-third of surveyed residents rate the overall quality of the handovers they received as poor. Handover skills must be taught in a systematic fashion. Improved resident communication will likely decrease loss of patient information and therefore improve ACS patient safety.

The price of acute care surgery

BACKGROUND: Numerous organizations have identified access to emergency surgical care as a crisis. One barrier is the financial disincentive associated with caring for this patient population. We sought to identify contributing factors by analyzing endemic data during the development of an acute care surgery (ACS) service at an academic health care system. METHODS: Financial data (receipts, payer mix, and dollar/relative value unit [RVU]) and productivity measures (OR procedures and RVUs) were obtained for a surgical division for 6-month periods before and after transition to an ACS model. Using national data, a sensitivity analysis was performed to identify salary targets required for an ACS surgeon to have equitable career reimbursement using standard financial modeling (net present value) with comparable surgical specialists. RESULTS: Post-ACS, operative volume increased 25%, work RVUs increased 21%, but net receipts increased only 11%. Dollar/RVU decreased primarily due to a higher proportion of uncompensated care. As a result, the dollar/RVU for ACS patients was 28% lower in comparison to non-ACS specialties. Increasing ACS salaries proportionate to the observed dollar/RVU discount realigned ACS economic value with other specialties in aggregate. CONCLUSION: A national shortage of ACS surgeons exists due to in part financial misalignment. We demonstrated that despite an increase in clinical activity, transition to an ACS model resulted in a relative reduction in payment. A rational systems-based approach to ACS development that objectively targets the RVU reimbursement disparity would reduce economic disincentives related to careers in ACS and potentially address the emergency surgical care crisis.

The price of acute care surgery

Numerous organizations have identified access to emergency surgical care as a crisis. One barrier is the financial disincentive associated with caring for this patient population. We sought to identify contributing factors by analyzing endemic data during the development of an acute care surgery (ACS) service at an academic health care system. Financial data (receipts, payer mix, and dollar/relative value unit [RVU]) and productivity measures (OR procedures and RVUs) were obtained for a surgical division for 6-month periods before and after transition to an ACS model. Using national data, a sensitivity analysis was performed to identify salary targets required for an ACS surgeon to have equitable career reimbursement using standard financial modeling (net present value) with comparable surgical specialists. Post-ACS, operative volume increased 25%, work RVUs increased 21%, but net receipts increased only 11%. Dollar/RVU decreased primarily due to a higher proportion of uncompensated care. As a result, the dollar/RVU for ACS patients was 28% lower in comparison to non-ACS specialties. Increasing ACS salaries proportionate to the observed dollar/RVU discount realigned ACS economic value with other specialties in aggregate. A national shortage of ACS surgeons exists due to in part financial misalignment. We demonstrated that despite an increase in clinical activity, transition to an ACS model resulted in a relative reduction in payment. A rational systems-based approach to ACS development that objectively targets the RVU reimbursement disparity would reduce economic disincentives related to careers in ACS and potentially address the emergency surgical care crisis.

An Acute Care Surgery Service Generates a Positive Contribution Margin in an Appropriately Staffed Hospital

Acute care surgery (ACS) includes trauma, surgical critical care, and emergent general surgery. There is a national shortage of institutions that can provide for patients needing access to emergency surgical care. Inability to fund ACS surgeons can be a barrier. We hypothesize that an ACS service, in an appropriately staffed hospital, generates a positive contribution margin (CM). Fiscal data for 2009 were retrospectively reviewed at the University of Kentucky, a Level I trauma center with an ACS service. Contribution margin (ie, net revenue minus direct costs) and mean length of stay were calculated for all patients admitted to the ACS service. Inpatient data were stratified by trauma vs general surgery, emergent vs elective, and by payor mix. Annual CM associated with the 5 ACS faculty was $21,799,000. Trauma generated higher CM than general surgery. General surgery had a greater CM, more if emergent than if elective ($9,500 vs $5,500; p < 0.01). Self-payment was lower with emergent general surgery vs trauma (20% vs 25%; p = 0.02). Acute care surgery generates a positive CM. Emergent general surgery generates a greater CM than elective general surgery because of increased case mix index. These data suggest that hospital subsidization of acute care surgeons is financially feasible and might address the surgical workforce shortage and the critical problem of access to emergency surgical services.

Outcomes in the Management of Appendicitis and Cholecystitis in the Setting of a New Acute Care Surgery Service Model: Impact on Timing and Cost

The acute care surgery model is a novel notion in the provision of emergency general surgery. To date, several studies have analyzed the effects on patient health outcomes and timeliness of care for nontrauma patients within the scope of acute general surgery and emergencies, but none have assessed the cost benefits of this model. A retrospective analysis of patients undergoing appendectomy or cholecystectomy in the setting of acute abdomen was performed to compare data from 2 cohorts, the traditional model from July 2009 to June 2010 and the acute care surgery model from July 2010 to June 2011. Categorical variables and comparison means were examined using chi-square and independent 2-tailed sample t-tests. One hundred and seventy-five patients underwent appendectomy and 113 underwent cholecystectomy. The traditional model team staffed 82 appendectomies and 51 cholecystectomies, and the acute care surgery team staffed 93 and 62, respectively. In the appendectomy group, there was a statistically significant mean reduction of time to surgical evaluation (2.19 hours; p < 0.001) and time to the operating room (5.38 hours, p = 0.006), there were 7 fewer patients with complications (p = 0.06) and a reduced length of stay (1 day, p = 0.002) for the acute care surgery cohort. Similar statistically significant differences were observed in the cholecystectomy group in the acute care surgery cohort: surgical evaluation difference = 5.84 hours (p = 0.03), time to operating room difference = 25.37 hours (p = 0.002), 8 fewer patients with complications (p = 0.01), and length of stay difference was 2 days (p = 0.03) compared with the traditional model cohort. The newly implemented acute care surgery model in our institution accomplished earlier treatment and shorter length of stay for the 2 most common causes of acute abdomen in our setting. Overall, the new model translated to better outcomes for patients and savings per case for the hospital.

Acute care surgery: the impact of an acute care surgery service on assessment, flow, and disposition in the emergency department

BackgroundAcute care surgery (ACS) services are becoming increasingly popular. MethodsAssessment, flow, and disposition of adult ACS patients (acute, nontrauma surgical conditions) through the emergency department (ED) in a large health care system (Calgary) were prospectively analyzed. ResultsAmong 447 ACS ED consultations over 3 centers (70% admitted to ACS), the median wait time from the consultation request to ACS arrival was 36 minutes, and from ACS arrival to the admission request it was 91 minutes. The total ACS-dependent time was 127 minutes compared with 261 minutes for initial ED activities and 104 minutes for transfer to a hospital ward (P < .05). Forty percent of patients underwent computed tomography (CT) imaging (76% before consultation). The time to ACS consultation was 305 minutes when a CT scan was performed first. ConclusionsAn ACS service results in rapid ED assessment of surgical emergencies. Patient waiting is dominated by the time before requesting ACS consultation and/or waiting for transfer to the ward.

Acute Care Surgery: Impact on Practice and Economics of Elective Surgeons

The creation of an acute care surgery service provides a rich operative experience for acute care surgeons. Elective surgeons typically have concerns about whether their practice volume will be restored with elective cases. Acute care surgery has financial implications for both groups. The aim of this project is to examine the impact in terms of work relative value units (wRVUs), collections, and cases in both groups with creation of an acute care surgery service at our institution. Work RVUs, collections, and case volume were examined from departmental records for 2 groups before and after acute care surgery service creation. The service began on September 1, 2008. Before this time, emergency surgical consults went to the general surgeon on call. After this date, all emergency consults were seen by acute care surgeons. The number of operations performed by the acute care surgery group increased significantly when the mean of the 2 years after institution of acute care surgery were compared with the mean of the 2 years preceding the service creation (1,639 vs 790/year; p = 0.007). There was no change in total operations done by the elective surgery group (2,763 vs 2,496/year: p = 0.13). Elective caseload, however, did increase by 23% in the elective surgery group. In the acute care surgery group, wRVUs increased by 140% and elective surgery group wRVUs decreased by 8%. Collections increased in both groups (acute care surgery 129%, elective surgery 7%) and the combined collections of the groups increased by $2,138,00 in the year after service creation. Acute care surgery service creation took emergency business from the elective surgery group, but this was almost immediately replaced with elective cases. This resulted in higher collections for both groups and a resultant significant increase in collections in aggregate.

Implementation of an acute care surgery service at an academic trauma center

Background The establishment of acute care surgery is rapidly becoming a solution to meet emergency surgical needs. Challenges include competition for emergency surgery opportunities and the ability to economically sustain a practice. Methods Clinical activity was measured by reviewing the institutional and practice plan databases. Work relative value units and practice plan collection rates defined clinical activity and revenue. Results Operative procedures and intensive care unit activity accounted for 52% and 36% of activity, respectively. Although procedures on the digestive tract accounted for half of the operative activity, significant activity was observed in nearly all other systems. Overall clinical productivity remained constant but did demonstrate a 25% increase in operative work relative value units. Current billing activity supports 4.0 clinical full-time equivalents, but estimated collections would cover <73% of physician direct costs. Conclusions The authors describe the implementation of an acute care surgery service that combines trauma, emergency general surgery, and surgical critical care in an established academic surgery department. Developing a sustainable economic model must include income sources other than patient service revenue.

Interhospital Transfers of Acute Care Surgery Patients: Should Care for Nontraumatic Surgical Emergencies be Regionalized?

Patients with major nontraumatic surgical emergencies (NTSEs) are commonly transferred from small hospitals to tertiary care centers. We hypothesized that transferred patients (TRANS) have worse outcomes than patients with similar diagnoses admitted directly to a tertiary center (DIRECT). We reviewed all patients admitted to the acute care surgery service of our tertiary center (September 1, 2006-October 31, 2009) with one of eight diagnoses indicating a major NTSE. Patients transferred for reasons other than the severity of illness were excluded. Univariate and multivariable analyses compared TRANS and DIRECT patients. Of 319 patients eligible for analysis, 103 (34%) were TRANS and averaged 3.8 days in the referring hospital before transfer. Compared to DIRECT patients, TRANS patients were more likely to be obese (18.5 vs. 8.0%, P = 0.006) and have cardiac (24 vs. 14%, P = 0.022) or pulmonary (25 vs. 12%, P = 0.003) co-morbidities. TRANS patients were also more likely to present to the tertiary center with hypotension (9 vs. 2%, P = 0.021), tachycardia (20 vs. 13%, P = 0.036), anemia (83 vs. 58%, P < 0.001), and hypoalbuminemia (50 vs. 14%, P < 0.001). TRANS patients had higher mortality (4.9 vs. 0.9%, P = 0.038) and longer hospital stay (8 with 5-13 days vs. 5 with 3-8 days, P < 0.001). TRANS patients comprised a significant portion of the population with major NTSEs admitted to the acute care surgery service of our tertiary center. They presented with greater physiologic derangement and had worse outcomes than DIRECT patients. As is currently established for trauma care, regionalization of care for NTSEs should be considered.

Evaluation of a Regional Acute Care Surgery Service by Residents in General Surgery

Acute care surgery (ACS) services dedicated to care of acute general surgery patients have been established in many tertiary centers across Canada. Little is known about the impact of this trend on postgraduate education. In this study we aimed to evaluate ACS through a cross-sectional survey of general surgery residents in Winnipeg, Manitoba. General surgery residents at the University of Manitoba were asked to complete an anonymous survey. Basic demographic data were obtained. The educational value of ACS was assessed using 10 statements derived from the CanMEDS framework for training physicians. Resident burnout was measured using the Maslach Burnout Inventory, on emotional exhaustion, depersonalization, and personal accomplishment. The response rate was 70% (14/20). ACS was evaluated positively based on the CanMEDS roles by the following proportions of responders: surgical skills (79%), clinical knowledge (100%), communicator (100%), collaborator (100%), manager (86%), health advocate (100%), scholar (64%), and professional (93%). Fifty percent of responders had a high score on emotional exhaustion, 43% on depersonalization, and 0% on low sense of personal accomplishment. The overall burnout was 64%. ACS provides a comprehensive clinical experience based on the CanMEDS competencies. Despite an increased sense of personal accomplishment, residents experienced a high incidence of burnout, as demonstrated by high scores on emotional exhaustion and depersonalization of patients.

Global Surgical Package Reimbursement and the Acute Care Surgeon: A Threat to Optimal Care

Emergency surgery patients risk greater mortality and morbidity than elective patients undergoing the same procedure. However, the differential effort required for the care of emergency surgical patients is poorly defined. This study sought to characterize costs and outcomes of elective versus emergent right hemicolectomy. 2006 Nationwide Inpatient Sample data were used to compare mortality, total charges, and length of stay (LOS) in patients undergoing emergency versus elective right hemicolectomy (International Classification of Diseases-9th procedure code 45.73). Mann-Whitney tests examined total costs and LOS; multivariable regression modeled inhospital mortality controlling for age, gender, insurance status, and comorbidities. Among 8,074,825 inpatient admissions, 7,767 emergent and 10,399 elective right hemicolectomies were identified. Emergent patients were similar in age (66.9 years vs. 67.6 years; p=0.129), more likely women (43.7% vs. 42.3%; p=0.048) and had greater comorbidity (Charlson score 3.37 vs. 3.01; p<0.001) compared with elective patients. Emergent patient LOS was approximately double that of elective patients (13 days vs. 7 days; p<0.001). Mean total charges were $78,118 for emergent versus $39,265 elective patients (p<0.001). Emergent patients had greater odds of inhospital mortality (odds ratio, 5.86; 95% confidence intervals, 4.80-7.14). Emergent right hemicolectomy patients have greater comorbidity, experience longer stays, accrue twice the charges, and have higher mortality risk. This reflects a heightened effort required to care for emergent patients unrecognized by Global Surgical Package reimbursement. The concentration of emergency surgical patients in acute care surgery services necessitates accounting for the additional effort associated with these predictable risks to ensure optimal care.

Establishing an Acute Care Surgery Service: Lessons Learned From the Epidemiology of Emergent Non-Trauma Patients and Increasing Utilization of Laparoscopy

Acute care surgery is a fellowship training model created to address the growing crisis in emergency healthcare due to decreased availability of on-call surgeons and reduction in operative procedures for trauma. Our objective was to identify the demographics and spectrum of diseases in patients presenting with non-trauma surgical emergencies and the use of laparoscopy in emergent surgery in light of implementing an acute care surgery model. All non-trauma emergency surgical consultations at a large urban academic medical center from January 2005 to December 2008 were retrospectively reviewed. A clinician-completed registry was used to obtain patient information. Diagnoses were categorized into five broad groups for statistical analysis. Median age was 41 years (range, 6 weeks to 97 years), 50% were men, and the majority (67%) was Hispanic. The most common disease category was infectious followed by hepatobiliary. Prevalence of disease categories differed significantly among various racial groups. Majority (86%) of consult patients required admission. Thirty-eight percent of the consults resulted in an operative procedure, 40% of which were laparoscopic. The percentage of laparoscopic procedures increased during the 4-year study period. Patients with non-trauma surgical emergencies are young with a significantly wide range of diseases based on race. Less than half require emergent surgery. Laparoscopy is prevalent in emergency surgery and growing. Resources should be allocated to maximize the ability to treat infectious and hepatobiliary diseases, and to increase utilization of laparoscopy. The acute care surgeon needs to be proficient in laparoscopy.

313: Impact of Acute Care Surgery Service on Timing of Operation and Outcome for Emergency Department Diagnosis of Appendicitis

For the patient with acute appendicitis at a Level 1 trauma center, to determine whether an acute care surgery service (ACSS) staffed by in-house trauma surgeons affects the time to operation, hospital length of stay, and complication rate.

The Incidence of Benign and Malignant Neoplasia Presenting as Acute Appendicitis

Acute appendicitis remains the most common surgical emergency encountered by the general surgeon. It is most often secondary to lymphoid hyperplasia, however it can also result from obstruction of the appendiceal lumen by a mass. We sought to review our experience with neoplasia presenting as appendicitis. We retrospectively reviewed all patients admitted with the diagnosis of appendicitis to our Acute Care Surgery Service from July 1, 2007 to June 30, 2009. Patient demographics, duration of symptoms, lab findings, computed tomography findings, and pathology were all analyzed. Over the 2-year period, 141 patients underwent urgent appendectomy. Ten patients (7.1%) were diagnosed with neoplasia on final pathology, including four women and six men with a mean age of 46.9 years and mean duration of symptoms of 12.6 days. Final pathology revealed four colonic adenocarcinoma; three mucinous tumors; one carcinoid; one endometrioma; and one patient had a combination of a mucinous cystadenoma, a carcinoid tumor, and endometriosis of the appendix. Six patients had concurrent appendicitis. Colonic and appendiceal neoplasia are not unusual etiologies of appendicitis. These patients tend to present at an older age and with longer duration of symptoms.

Impact of Acute Care Surgery on Biliary Disease

We introduced an acute care surgery (ACS) service in July 2007 to address all new consults. This study examines the impact on treatment of biliary disease. A retrospective review was done of a prospective database of all inpatient operative biliary disease treated in a tertiary care hospital 1 year before and 2 years after implementation of an ACS service. Data collected included diagnosis, time from admission to operation, time of operation, length of stay, comorbidities, and complications. There were 54 patients in the pre-ACS group and 132 in the post-ACS group, with no difference in percentage of females, comorbidities, and diagnosis. The post-ACS group had a trend toward a shorter time from consult to operating room (59.9 vs 68.7 hours, p = 0.45) and shorter hospital length of stay (5.5 vs 6.7 days, p = 0.27). In the acute cholecystitis post-ACS cohort, there was also a trend toward shorter time to operating room (39.8 vs 45.5 hours, p = 0.55) and shorter length of stay (4.6 vs 5.7 days, p = 0.39). The second year of ACS showed continued improvement in time to operating room (30.9 hours) compared with both pre-ACS and the first year of ACS. There was no significant difference in laparoscopic versus open surgery or complications between the groups. There is a trend toward improvement in timeliness of care for complex inpatient biliary disease with implementation of an ACS service, especially as the service matures. There remains wide variability in patient complexity, which affects timeliness of care.

Advanced Practice Nurses Making a Difference

There has been growing concern for many years over the impending shortage of trauma surgeons due to attrition and the lack of residents choosing the trauma surgical specialty area. Along with this concern, trauma admissions continue to increase and many trauma services are merging with acute care surgery, increasing the overall service line volume. Adding to the burden is the 80-hour workweek residency requirement. Trauma centers are faced with gaps in patient coverage, placing the need for midlevel practitioners in high demand. This article discusses (1) the utilization of advanced practice nurses on a trauma and acute care surgery service and (2) how the implementation of a formal rounding process improves nursing and physician satisfaction as well as length of stay.

Initial Implementation of an Acute Care Surgery Model: Implications for Timeliness of Care

In July 2007, we introduced an acute care surgery service to an academic department of surgery staffed in a prearranged, dedicated rotation by critical care-trained surgeons to address all emergency department, inpatient, and transfer consultations. This study is designed to evaluate the impact on patient care and describe the case-mix experienced. A retrospective review was done of a prospectively collected database encompassing all patients evaluated. Diagnosis, operations performed, and times of operations were recorded. Eight hundred sixty-one patients were evaluated. Four hundred ten patients (47.6%) had 500 operations; 368 (72.8%) were performed in the operating room and 132 (26.2%) at the bedside. Respiratory failure and malnutrition (n = 130), soft-tissue infection (n = 115), abdominal pain (n = 97), biliary (n = 94), bowel obstruction (n = 78), diseases of the colon (n = 49), and appendicitis (n = 46) were the most common diseases seen. The most common operations performed included incision and drainage (n = 61); tracheostomy or percutaneous gastrostomy, or both (n = 125); cholecystectomy (n = 53); appendectomy (n = 41); colectomy (n = 34); and complex abdominal wound care (n = 43). In the year before implementation, 55.4% of emergent procedures were performed between 7:30 am and 5:30 pm, compared with 70% after implementation (p = 0.0002). Procedures performed after 5:30 pm decreased from 44.6% to 30%. Implementation of an acute care surgery service has been positive in terms of facilitating the ability to provide more timely care by increasingly using the daytime operating room and providing a breadth of consultative and operative experience to the participating academic surgeons and trainees.

Management of Acute Appendicitis by an Acute Care Surgery Service: Is Operative Intervention Timely?

Trauma services are increasingly providing emergency surgery care by creating "acute care surgery" teams. We compared two periods at a Level I trauma center to determine if trauma service coverage would negatively impact timely management of acute appendicitis. All patients admitted through the emergency department of a Level I trauma center who underwent appendectomies between March 2005 and May 2006 (Trauma period) were identified. During this period, the trauma service covered most surgical emergencies. Comparison was made with the earlier 15-month period (Pretrauma). Emergency department to operating room (OR) time, procedure length, and negative appendectomy rates were obtained. In the Pretrauma period, 273 patients underwent appendectomy, compared with 279 in the Trauma period. Two-thirds (66%) of appendectomies in the Trauma period were performed by trauma surgeons. There was no difference in both periods with regard to mean emergency department to OR time (10.5 hours versus 9.9 hours; p = 0.4509), perforation rates (12% Pretrauma versus 7.5% Trauma; p = 0.1134), or negative appendectomy rates (17.9% Pretrauma versus 18.2% Trauma; p = 1.0). In the Trauma period, more appendectomies were completed laparoscopically (84.6% Trauma versus 66.6% Pretrauma; p < 0.0001), and mean OR time was shorter (57.4 minutes versus 67 minutes; p = 0.0006). In comparing two periods with and without the trauma service coverage of surgical emergencies, no difference was found in emergency department to OR time, perforation rates, or negative appendectomy rates in the management of acute appendicitis. There was a decrease in operative time and an increase in the proportion of laparoscopic appendectomies in the Trauma period. Trauma services can effectively incorporate emergency surgical coverage of procedures, such as appendectomies, without compromising timely intervention.