Local and Visiting Physician Perspectives on Short Term Surgical Missions in Guatemala: A Qualitative Study.

OBJECTIVE: To explore the impact of short-term surgical missions (STMs) on medical practice in Guatemala as perceived by Guatemalan and foreign physicians. SUMMARY BACKGROUND DATA: STMs send physicians from high-income countries to low and middle-income countries to address unmet surgical needs. Although participation among foreign surgeons has grown, little is known of the impact on the practice of foreign or local physicians. METHODS: Using snowball sampling, we interviewed 22 local Guatemalan and 13 visiting foreign physicians regarding their perceptions of the impact of Guatemalan STMs. Interviews were transcribed verbatim, iteratively coded, and analyzed to identify emergent themes. Findings were validated through triangulation and searching for disconfirming evidence. RESULTS: We identified 2 overarching domains. First, the delivery of surgical care by both Guatemalan and foreign physicians was affected by practice in the STM setting. Differences from usual practice manifested as occasionally inappropriate utilization of skills, management of postoperative complications, the practice of perioperative care versus "pure surgery," and the effect on patient-physician communication and trust. Second, both groups noted professional and financial implications of participation in the STM. CONCLUSIONS: While Guatemalan physicians reported a net benefit of STMs on their careers, they perceived STMs as an imperfect solution to unmet surgical needs. They described missed opportunities for developing local capacity, for example through education and optimal resource planning. Foreign physicians described costs that were manageable and high personal satisfaction with STM work. STMs could enhance their impact by strengthening working relationships with local physicians and prioritizing sustainable educational efforts.

"It's Like Learning by the Seat of Your Pants": Surgeons Lack Formal Training in Opioid Prescribing.

OBJECTIVE: To determine the training surgical residents and faculty receive on opioid prescribing, and to identify opportunities for curricula development to fill training gaps. DESIGN: We conducted qualitative semi-structured interviews and surveys. After applying an overarching organizational framework, we used an iterative, team-based process to develop relevant inductive codes. We then performed thematic analyses to identify and catalogue critical domains related to surgeons' education about opioid prescribing. SETTING: Tertiary care academic medical center. PARTICIPANTS: Maximum variation purposive sampling was used to recruit general surgery residents and surgical faculty members. RESULTS: We interviewed 21 attending surgeons and 20 surgical residents. Surgeons reported minimal formal training on pain management and prescribing opioids. A minority of individuals described receiving opioid training in the form of continuing medical education, intern boot camp sessions, and medical school classes. Participants compensated for the lack of formal training during residency by informally learning from senior residents, consulting pain specialists, and seeking external learning resources. Increased surgical experience was correlated with increased comfort with pain management. A majority of surgeons desired formal training. The most commonly requested educational resources were opioid prescribing guidelines for common operations and recommendations for treating chronic pain patients. Residents requested that training occur early in residency to maximize the benefits received. Based on these findings, we developed a conceptual framework to explain how surgeons learn to prescribe opioids and to highlight opportunities for improvement. CONCLUSIONS: Although surgeons routinely prescribe opioids and desire education on opioids, a majority of them do not receive any training. Instituting formal educational programs is critical for improving opioid prescribing practices among surgeons.These programs should include standard prescribing guidelines and address management of acute postoperative pain in patients with chronic pain.

Use of Biological Medications Does Not Increase Postoperative Complications Among Patients With Ulcerative Colitis Undergoing Colectomy: A Retrospective Cohort Analysis of Privately Insured Patients.

BACKGROUND: Existing studies on the effects of biological medications on surgical complications among patients with ulcerative colitis have mixed results. Because biologicals may hinder response to infections and wound healing, preoperative exposure may increase postoperative complications. OBJECTIVE: The purpose of this study was to evaluate associations between biological exposure within 6 months preceding colectomy or proctocolectomy and postoperative complications among patients with ulcerative colitis. DESIGN: This was a retrospective cohort study with multivariate regression analysis after coarsened exact matching. SETTINGS: A large commercial insurance claims database (2003-2016) was used. PATIENTS: A total of 1794 patients with ulcerative colitis underwent total abdominal colectomy with end ileostomy, total proctocolectomy with end ileostomy, or total proctocolectomy with IPAA. Twenty-two percent were exposed to biologicals in the 6 months preceding surgery. MAIN OUTCOMES MEASURES: Healthcare use (length of stay, unplanned reoperation/procedure, emergency department visit, or readmission) and complications (infectious, hernia or wound disruption, thromboembolic, or cardiopulmonary) within 30 postoperative days were measured. RESULTS: Exposure to biological medications was associated with shorter surgical hospitalization (7 vs 8 d; p <0.001) but otherwise was not associated with differences in healthcare use or postoperative complications. PATIENTS: who underwent total proctocolectomy with IPAA had higher odds of infectious complications compared with those who underwent total abdominal colectomy with end ileostomy (adjusted OR = 2.2 (95% CI, 1.5-3.0); p < 0.001) but had lower odds of cardiopulmonary complications (adjusted OR = 0.4 (95% CI, 0.3-0.6); p < 0.001). LIMITATIONS: Analysis of private insurance database claims data may not represent uninsured or government-insured patients and may be limited by coding accuracy. Matched cohorts differed in age and Charlson Comorbidity Index, which could be influential even after multivariate adjustments. CONCLUSIONS: Biological exposure among patients with ulcerative colitis is not associated with higher odds of postoperative complications or healthcare resource use. These data, in combination with clinical judgment and patient preferences, may aid in complex decision-making regarding operative timing, operation type, and perioperative medication management. See Video Abstract at http://links.lww.com/DCR/B370. EL USO DE MEDICAMENTOS BIOLÓGICOS NO AUMENTA LAS COMPLICACIONES POSTOPERATORIAS ENTRE PACIENTES CON COLITIS ULCERATIVA SOMETIDOS A UNA COLECTOMÍA: UN ANÁLISIS DE COHORTE RETROSPECTIVO DE PACIENTES CON SEGURO PRIVADO: Estudios existentes sobre los efectos de medicamentos biológicos, en complicaciones quirúrgicas, en pacientes con colitis ulcerativa, presentan resultados mixtos. Debido a que los productos biológicos pueden retrasar la respuesta a las infecciones y curación de heridas, su exposición preoperatoria pueden aumentar las complicaciones postoperatorias.Evaluar las asociaciones entre la exposición biológica dentro de los seis meses anteriores a la colectomía o proctocolectomía y las complicaciones postoperatorias entre los pacientes con colitis ulcerativa.Estudio de cohorte retrospectivo con análisis de regresión multivariante después de una coincidencia exacta aproximada.Una gran base de datos de reclamaciones de seguros comerciales (2003-2016).Un total de 1.794 pacientes con colitis ulcerativa, se sometieron a colectomía abdominal total con ileostomía terminal, proctocolectomía total con ileostomía terminal o proctocolectomía total con anastomosis anal y bolsa ileal. 22% estuvieron expuestos a productos biológicos, seis meses antes de la cirugía.Utilización de la atención médica (duración de la estadía, reoperación o procedimiento no planificado, visita al servicio de urgencias o reingreso) y complicaciones (infecciosas, hernias o dehiscencias de heridas, tromboembólicas o cardiopulmonares) dentro de los 30 días postoperatorios.La exposición a medicamentos biológicos se asoció con una hospitalización quirúrgica más corta (7 frente a 8 días, p <0,001), pero por lo demás, no se asoció con diferencias en la utilización de la atención médica o complicaciones postoperatorias. Los pacientes que se sometieron a proctocolectomía total con anastomosis anal y bolsa ileal, tuvieron mayores probabilidades de complicaciones infecciosas, en comparación con aquellos que se sometieron a colectomía abdominal total con ileostomía final (aOR 2.2, IC 95% [1.5-3.0], p <0.001) pero tuvieron menores probabilidades de complicaciones cardiopulmonares (aOR 0.4, IC 95% [0.3-0.6], p <0.001).El análisis de los datos de reclamaciones, de la base de datos de los seguros privados, puede no representar a pacientes no asegurados o asegurados por el gobierno, y puede estar limitado por la precisión de la codificación. Las cohortes emparejadas diferían en la edad y el índice de comorbilidad de Charlson, lo que podría influir incluso después de ajustes multivariados.La exposición biológica entre los pacientes con colitis ulcerativa, no se asocia con mayores probabilidades de complicaciones postoperatorias, o a la utilización de recursos sanitarios. Estos datos, en combinación con el juicio clínico y las preferencias del paciente, pueden ayudar en la toma de decisiones complejas con respecto al momento quirúrgico, el tipo de operación y el manejo de la medicación perioperatoria. Consulte Video Resumen en http://links.lww.com/DCR/B370. (Traducción-Dr Fidel Ruiz Healy).

Home Infliximab Infusions Are Associated With Suboptimal Outcomes Without Cost Savings in Inflammatory Bowel Diseases.

INTRODUCTION: Biologic agents including infliximab are effective but costly therapies in the management of inflammatory bowel disease (IBD). Home infliximab infusions are increasingly payer-mandated to minimize infusion-related costs. This study aimed to compare biologic medication use, health outcomes, and overall cost of care for adult and pediatric patients with IBD receiving home vs office- vs hospital-based infliximab infusions. METHODS: Longitudinal patient data were obtained from the Optum Clinformatics Data Mart. The analysis considered all patients with IBD who received infliximab from 2003 to 2016. Primary outcomes included nonadherence (≥2 infliximab infusions over 10 weeks apart in 1 year) and discontinuation of infliximab. Secondary outcomes included outpatient corticosteroid use, follow-up visits, emergency room visits, hospitalizations, surgeries, and cost outcomes (out-of-pocket costs and annual overall cost of care). RESULTS: There were 27,396 patients with IBD (1,839 pediatric patients). Overall, 5.7% of patients used home infliximab infusions. These patients were more likely to be nonadherent compared with both office-based (22.2% vs 19.8%; P = .044) and hospital-based infusions (22.2% vs 21.2%; P < .001). They were also more likely to discontinue infliximab compared with office-based (44.7% vs 33.7%; P < .001) or hospital-based (44.7% vs 33.4%; P < .001) infusions. On Kaplan-Meier analysis, the probabilities of remaining on infliximab by day 200 of therapy were 64.4%, 74.2%, and 79.3% for home-, hospital-, and office-based infusions, respectively (P < .001). Home infliximab patients had the highest corticosteroid use (cumulative corticosteroid days after IBD diagnosis: home based, 238.2; office based, 189.7; and hospital based, 208.5; P < .001) and the fewest follow-up visits. Home infusions did not decrease overall annual care costs compared with office infusions ($49,149 vs $43,466, P < .001). DISCUSSION: In this analysis, home infliximab infusions for patients with IBD were associated with suboptimal outcomes including higher rates of nonadherence and discontinuation of infliximab. Home infusions did not result in significant cost savings compared with office infusions.

Drivers, Beliefs, and Barriers Surrounding Surgical Opioid Prescribing: A Qualitative Study of Surgeons' Opioid Prescribing Habits.

BACKGROUND: Recent data demonstrate that surgeons overprescribe opioids and vary considerably in the amount of opioids prescribed for common procedures. Limited data exist about why and how surgeons develop certain opioid prescribing habits. We sought to identify surgeons' knowledge, attitudes, and beliefs about opioid prescribing and elicit barriers to guideline-based prescribing. METHODS: We conducted qualitative semistructured interviews accompanied by demographic surveys at an academic medical center. Surgical residents and faculty members were selected by maximum variation purposive sampling. We used thematic analysis to identify themes associated with opioid prescribing. RESULTS: Twenty surgical residents and twenty-one surgical faculty members were interviewed. Characteristics of individual surgeons, patients, health care teams, practice environments, and the complex interplay between these domains drove prescribing habits. Attending-resident communication about opioid prescribing was extremely limited. Surgeons received little training and feedback about opioid prescribing and were rarely aware of negative long-term consequences, limiting motivation to change prescribing habits. Although surgeons frequently interacted with pain management physicians to comanage patients postoperatively, few involved pain management physicians in preoperative planning. Perceived barriers to guideline-based prescribing included the following: limitations to electronic prescribing, cross-coverage problems, inadequate time for patient education, and impediments to use of nonopioid alternatives. CONCLUSIONS: Interventions to improve compliance with opioid prescribing guidelines should include surgeon education and personal feedback. Future interventions should aim to improve attending-resident communication about opioid prescribing, reduce hurdles to electronic prescribing, provide clear pain management plans for cross-covering physicians, assess alternative methods for efficient patient education, and maximize use of nonnarcotic pain medications.

Operative Versus Nonoperative Management of Appendicitis: A Long-Term Cost Effectiveness Analysis.

Background. Recent clinical trials suggest that nonoperative management (NOM) of patients with acute, uncomplicated appendicitis is an acceptable alternative to surgery. However, limited data exist comparing the long-term cost-effectiveness of nonoperative treatment strategies. Design. We constructed a Markov model comparing the cost-effectiveness of three treatment strategies for uncomplicated appendicitis: 1) laparoscopic appendectomy, 2) inpatient NOM, and 3) outpatient NOM. The model assessed lifetime costs and outcomes from a third-party payer perspective. The preferred strategy was the one yielding the greatest utility without exceeding a $50,000 willingness-to-pay threshold. Results. Outpatient NOM cost $233,700 over a lifetime; laparoscopic appendectomy cost $2500 more while inpatient NOM cost $7300 more. Outpatient NOM generated 24.9270 quality-adjusted life-years (QALYs), while laparoscopic appendectomy and inpatient NOM yielded 0.0709 and 0.0005 additional QALYs, respectively. Laparoscopic appendectomy was cost-effective compared with outpatient NOM (incremental cost-effectiveness ratio $32,300 per QALY gained); inpatient NOM was dominated by laparoscopic appendectomy. In one-way sensitivity analyses, the preferred strategy changed when varying perioperative mortality, probability of appendiceal malignancy or recurrent appendicitis after NOM, probability of a complicated recurrence, and appendectomy cost. A two-way sensitivity analysis showed that the rates of NOM failure and appendicitis recurrence described in randomized trials exceeded the values required for NOM to be preferred. Limitations. There are limited NOM data to generate long-term model probabilities. Health state utilities were often drawn from single studies and may significantly influence model outcomes. Conclusion. Laparoscopic appendectomy is a cost-effective treatment for acute uncomplicated appendicitis over a lifetime time horizon. Inpatient NOM was never the preferred strategy in the scenarios considered here. These results emphasize the importance of considering long-term costs and outcomes when evaluating NOM.

Association of opioid use and peripheral artery disease.

BACKGROUND: Prescription opioids account for 40% of all U.S. opioid overdose deaths, and national efforts have intensified to reduce opioid prescriptions. Little is known about the relationship between peripheral artery disease (PAD) and high-risk opioid use. The objectives of this study were to evaluate this relationship and to assess the impact of PAD treatment on opiate use. METHODS: In this retrospective cohort study, the Truven Health MarketScan database (Truven Health Analytics, Ann Arbor, Mich), a deidentified national private insurance claims database, was queried to identify patients with PAD (two or more International Classification of Diseases, Ninth Revision diagnosis codes of PAD ≥2 months apart, with at least 2 years of continuous enrollment) from 2007 to 2015. Critical limb ischemia (CLI) was defined as the presence of rest pain, ulcers, or gangrene. The primary outcome was high opioid use, defined as two or more opioid prescriptions within a 1-year period. Multivariable analysis was used to determine risk factors for high opioid use. RESULTS: A total of 178,880 patients met the inclusion criteria, 35% of whom had CLI. Mean ± standard deviation follow-up time was 5.3 ± 2.1 years. An average of 24.7% of patients met the high opioid use criteria in any given calendar year, with a small but significant decline in high opioid use after 2010 (P < .01). During years of high opioid use, 5.9 ± 5.5 yearly prescriptions were filled. A new diagnosis of PAD increased high opioid use (21.7% before diagnosis vs 27.3% after diagnosis; P < .001). A diagnosis of CLI was also associated with increased high opioid use (25.4% before diagnosis vs 34.5% after diagnosis; P < .001). Multivariable analysis identified back pain (odds ratio [OR], 1.89; 95% confidence interval [CI], 1.84-1.93; P < .001) and illicit drug use (OR, 1.87; 95% CI, 1.72-2.03; P < .001) as the highest predictors of high opioid use. A diagnosis of CLI was also associated with higher risk (OR, 1.61; 95% CI, 1.57-1.64; P < .001). A total of 43,443 PAD patients (24.3%) underwent 80,816 PAD-related procedures. After exclusion of periprocedural opioid prescriptions (4.9% of all opioid prescriptions), the yearly percentage of high opioid users increased from 25.8% before treatment to 29.6% after treatment (P < .001). CONCLUSIONS: Patients with PAD are at increased risk for high opioid use, with nearly one-quarter meeting described criteria. CLI and treatment for PAD additionally increase high opioid use. In addition to heightened awareness and active opioid management, our findings warrant further investigation into underlying causes and deterrents of high-risk opioid use.

Sex Differences in Treatment Strategies Among Patients With Ulcerative Colitis: A Retrospective Cohort Analysis of Privately Insured Patients.

BACKGROUND: Sex-based treatment disparities occur in many diseases. Women undergo fewer procedural interventions, and their care is less consistent with guideline-based therapy. There is limited research exploring sex-based differences in ulcerative colitis treatment. We hypothesized that women are less likely to be treated with strategies consistent with long-term disease remission, including surgery and maintenance medications. OBJECTIVE: The aim of this study was to determine if patient sex is associated with choice of treatment strategy for ulcerative colitis. DESIGN: This is a retrospective cohort analysis. SETTING: Data were gathered from a large commercial insurance claims database from 2007 to 2015. PATIENTS: We identified a cohort of 38,851 patients newly diagnosed with ulcerative colitis, aged 12 to 64 years with at least 1 year of follow-up. MAIN OUTCOME MEASURES: The primary outcomes measured were the differences between male and female patients in 1) rates and types of index ulcerative colitis operations, 2) rates and types of ulcerative colitis medication prescriptions, and 3) rates of opioid prescriptions. RESULTS: Men were more likely to undergo surgical treatment for ulcerative colitis (2.94% vs 1.97%, p < 0.001, OR 1.51, p < 0.001). The type of index operation performed did not vary by sex. Men were more likely to undergo treatment with maintenance medications, including biologic (12.4% vs 10.2%, p < 0.001, OR 1.22, p < 0.001), immunomodulatory (16.3% vs 14.9%, p < 0.001, OR 1.08, p = 0.006), and 5-aminosalicylate medications (67.0% vs 63.2%, p < 0.001, OR 1.18, p < 0.001). Women were more likely to undergo treatment with rescue therapies and symptomatic control with corticosteroids (55.5% vs 54.0%, p = 0.002, OR 1.07, p = 0.002) and opioids (50.2% vs 45.9%, p < 0.001, OR 1.17, p < 0.001). LIMITATIONS: Claims data lack clinical characteristics acting as confounders. CONCLUSIONS: Men with ulcerative colitis were more likely to undergo treatment consistent with long-term remission or cure, including maintenance medications and definitive surgery. Women were more likely to undergo treatment consistent with short-term symptom management. Further studies to explore underlying mechanisms of sex-related differences in ulcerative colitis treatment strategies and disease trajectories are warranted. See Video Abstract at http://links.lww.com/DCR/A943.

Lost in translation: Informed consent in the medical mission setting.

BACKGROUND: Informed consent is a fundamental tenet of ethical care, but even under favorable conditions, patient comprehension of consent conversations may be limited. Little is known about providing informed consent in more uncertain situations such as medical missions. We sought to examine the informed consent process in the medical mission setting. METHODS: We studied informed consent for adult patients undergoing inguinal herniorrhaphy during a medical mission to Guatemala using a convergent mixed-methods design. We audiotaped informed consents during preoperative visits and immediately conducted separate surveys to elicit comprehension of risks. Informed consent conversations and survey responses were translated and transcribed. We used descriptive statistics to examine informed consent content, including information provided by surgeon, the translation of information, and patient comprehension, and used thematic analysis to examine the consent process. RESULTS: Thirteen adult patients (median age 53 years, 69% male) participated. Surgeons conveyed 4 standard risks in 10 out of 13 encounters (77%); all 4 risks were translated to patients in 10 out of 13 encounters (77%). No patient could recall all 4 risks. Qualitative themes regarding the informed consent process included limited physician language skills, verbal domination by physicians and interpreters, and mistranslation of risks. Patients relied on faith and prior or vicarious experiences to qualify surgical risks instead of consent conversations. Many patients restated surgical instructions when asked about risks. CONCLUSION: Despite physicians' attempts to provide informed consent, medical mission patients did not comprehend surgical risks. Our data reveal a critical need to develop more effective methods for communicating surgical risks during medical missions.

Nonoperative Management of Uncomplicated Appendicitis Among Privately Insured Patients.

Importance: Health care professionals have shown significant interest in nonoperative management for uncomplicated appendicitis, but long-term population-level data are lacking. Objective: To compare the outcomes of nonoperatively managed appendicitis against appendectomy. Design, Setting, and Participants: This national retrospective cohort study used claims data from a private insurance database to compare patients admitted with uncomplicated appendicitis from January 1, 2008, through December 31, 2014, undergoing appendectomy vs nonoperative management. Coarsened exact matching was applied before multivariate analysis to reduce imbalance between groups. Data were analyzed from February 12 through May 1, 2018. Exposures: Appendectomy (control arm) or nonoperative management (treatment arm). Main Outcomes and Measures: Short-term primary clinical outcomes included emergency department visits, hospital readmission, abdominal abscess, and Clostridium difficile infections. Long-term primary clinical outcomes were small-bowel obstructions, incisional hernias, and appendiceal cancers. Nonoperative management failure was defined by hospital readmission with appendicitis diagnosis and an appendicitis-associated operation or procedure. Secondary outcomes included number of follow-up visits, length and cost of index hospitalization, and total cost of appendicitis-associated care. Covariates included age, sex, region, insurance plan type, admission year, and Charlson comorbidity index. Results: Of 58 329 patients with uncomplicated appendicitis (52.7% men; mean [SD] age, 31.9 [16.5] years), 55 709 (95.5%) underwent appendectomy and 2620 (4.5%) underwent nonoperative management. Patients in the nonoperative management group were more likely to have appendicitis-associated readmissions (adjusted odds ratio, 2.13; 95% CI, 1.63-2.77; P < .001) and to develop an abscess (adjusted odds ratio, 1.42; 95% CI, 1.05-1.92; P = .02). Patients in the nonoperative management group required more follow-up visits in the year after index admission (unadjusted mean [SD], 1.6 [6.3] vs 0.3 [1.4] visits; adjusted +1.11 visits; P < .001) and had lower index hospitalization cost (unadjusted mean [SD], $11 502 [$9287] vs $13 551 [$10 160]; adjusted -$2117, P < .001), but total cost of appendicitis care was higher when follow-up care was considered (unadjusted, $14 934 [$31 122] vs $14 186 [$10 889]; adjusted +$785; P = .003). During a mean (SD) of 3.2 (1.7) years of follow-up, failure of nonoperative management occurred in 101 patients (3.9%); median time to recurrence was 42 days (interquartile range, 8-125 days). Among the patients who experienced treatment failure, 44 did so within 30 days. Conclusions and Relevance: According to results of this study, nonoperative management failure rates were lower than previously reported. Nonoperative management was associated with higher rates of abscess, readmission, and higher overall cost of care. These data suggest that nonoperative management may not be the preferred first-line therapy for all patients with uncomplicated appendicitis.

Frequency and timing of short-term complications following abdominoperineal resection.

BACKGROUND: Abdominoperineal resection (APR) is primarily used for rectal cancer and is associated with a high rate of complications. Though the majority of APRs are performed as open procedures, laparoscopic APRs have become more popular. The differences in short-term complications between open and laparoscopic APR are poorly characterized. METHODS: We conducted a retrospective cohort study using the American College of Surgeons National Surgical Quality Improvement Program database to determine the frequency and timing of onset of 30-d postoperative complications after APR and identify differences between open and laparoscopic APR. RESULTS: A total of 7681 patients undergoing laparoscopic or open APR between 2011 and 2015 were identified. The total complication rate for APR was high (45.4%). APRs were commonly complicated by blood transfusion (20.1%), surgical site infection (19.3%), and readmission (12.3%). Laparoscopic APR was associated with a 14% lower total complication rate compared to open APR (36.0% versus 50.1%, P < 0.001). This was primarily driven by a decreased rate of transfusion (10.7% versus 24.9%, P < 0.001) and surgical site infection (15.5% versus 21.2%, P < 0.001). Laparoscopic APR had shorter length of stay and decreased reoperation rate but similar rates of readmission and death. Cardiopulmonary complications occurred earlier in the postoperative period after APR, whereas infectious complications occurred later. CONCLUSIONS: Short-term complications following APR are common and occur more frequently in patients who undergo open APR. This, along with factors such as risk of positive pathologic margins, surgeon skill set, and patient characteristics, should contribute to the decision-making process when planning rectal cancer surgery.